Sub-entry line energy consumption acquisition device and acquisition method

Abstract

The invention discloses a subitem line energy consumption acquisition device, and relates to the technical field of energy consumption monitoring, the subitem line energy consumption acquisition device comprises an open type current transformer and a circuit board, the circuit board comprises an MCU, a real-time clock circuit, a wireless communication module, a sampling circuit and a power supply module, the MCU is connected with the real-time clock circuit, the wireless communication module, the sampling circuit and the power supply module, and the power supply module is connected with the open type current transformer. The open type current transformer is connected with the sampling circuit, and the wireless communication module is connected with a remote server or intelligent equipment. According to the invention, the open current transformer is hung and buckled on the subitem line for current value signal acquisition, the current value and temperature information of the subitem line is monitored in real time, related data is transmitted to a remote server or intelligent equipment through the wireless communication module, and meanwhile, the open current transformer can be disassembled for multiple times to be used in different subitem lines, so that the cost is reduced. Installation is simple, cost is low, related energy consumption information of each subentry line can be obtained through one subentry metering electricity meter, and energy consumption management is more real-time, accurate and efficient.

Description

Technical Field

[0001] The present invention relates to the technical field of energy consumption monitoring, and more specifically, to a device and method for collecting energy consumption of sub-items of lines. Background Art

[0002] In modern society, efficient use and conservation of energy has become a global issue. With the rapid development of industrialization and urbanization, energy consumption has increased dramatically, which has put tremendous pressure on energy supply and the environment. In the power system, energy consumption by units and households accounts for a considerable proportion, while the monitoring and management of these consumptions are relatively backward. At present, most users rely on the power supply bureau's metering meters to measure and pay for total electricity consumption. This metering method cannot provide energy consumption data for sub-items, resulting in inefficient energy use and serious waste.

[0003] Due to the lack of real-time monitoring of energy consumption of sub-item lines, it is difficult for users to accurately understand the energy consumption of each electrical device, and thus cannot effectively manage and optimize energy. In order to solve this problem, some sub-item metering meters have appeared on the market, but these meters are often expensive and the installation process is complicated, requiring professionals to disconnect the power or disconnect the line before wiring and debugging. These factors limit the popularization and application of sub-item metering meters, making it difficult to achieve refined and intelligent energy management.

[0004] In addition, with the development of smart grid technology, higher requirements are placed on real-time monitoring and dynamic management of power systems. Users have an increasing demand for real-time acquisition of energy consumption data, energy consumption analysis and optimization. Existing metering and management methods can no longer meet these needs, and a new type of sub-item current acquisition device is urgently needed to achieve accurate metering and management of energy consumption. Summary of the invention

[0005] The purpose of the present invention is to overcome the problem that the sub-item metering meters in the prior art often have high use costs and complicated installation processes, and require professionals to cut off the power or disconnect the lines for wiring and debugging. The present invention provides a sub-item line energy consumption collection device which has a simple structure, is easy to install and disassemble, can be used multiple times, measures multiple sub-item lines separately, and has low use costs.

[0006] The present invention aims to solve the above technical problems at least to a certain extent.

[0007] To achieve the above object, the technical solution of the present invention is as follows:

[0008] A device for collecting energy consumption of sub-items of lines comprises an open-type current transformer and a circuit board, wherein the circuit board comprises an MCU, a real-time clock circuit, a wireless communication module, a sampling circuit and a power supply module, wherein the MCU is connected to the real-time clock circuit, the wireless communication module, the sampling circuit and the power supply module, the open-type current transformer is hooked on the line, the sampling circuit is connected to the output end of the open-type current transformer, and the wireless communication module is wirelessly connected to a remote server or an intelligent device.

[0009] Preferably, the sub-item energy consumption collection device also includes a circuit board housing, and the open-type current transformer includes a fixed part and a detachable part, the fixed part is embedded in the circuit board housing for connection, and the detachable part is connected to the fixed part by a snap or a thread.

[0010] Preferably, the open-type current transformer further comprises a transformer housing, the transformer housing comprises a fixed housing and a detachable housing, the fixed housing is fixedly connected to the circuit board housing, and the connection between the detachable housing and the fixed housing has a snap-on or threaded connection design.

[0011] Preferably, the circuit board housing and the transformer housing are both made of ABS plastic or PBT plastic.

[0012] Preferably, the item-by-item energy consumption collection device is also integrated with a temperature sensor, and a signal output end of the temperature sensor is connected to the MCU.

[0013] Preferably, the wireless communication module includes a WIFI module and a 4G module.

[0014] Preferably, the power supply module includes a detachable lithium battery.

[0015] Preferably, the power supply module further includes a power management circuit, and the power management circuit is connected to the MCU and the battery.

[0016] Preferably, the sampling circuit comprises an operational amplifier circuit and a filter circuit, the operational amplifier circuit is connected to the output end of the current transformer, the filter circuit is connected to the output end of the operational amplifier circuit, and the output end of the filter circuit is connected to the MCU.

[0017] To achieve the purpose of the invention, the present invention further provides a collection method for a sub-item line energy consumption collection device, which is applied to a sub-item line energy consumption collection device of the above technical solution, and the collection method comprises the following steps:

[0018] Hang the open-type current transformer directly on the sub-item line, turn on the device, initialize the system with MCU, and configure the wireless communication parameters of the wireless communication module to connect to WIFI or communicate with the remote server or smart device through the 4G network;

[0019] The MCU controls the open-type current transformer and the sampling circuit to collect the current value signal. Meanwhile, the real-time clock circuit records the timestamp information, and the temperature sensor collects the temperature information of the sub-item circuit.

[0020] The MCU receives the current value signal, the timestamp information and the temperature information and performs analog-to-digital conversion on the current value signal to obtain a digital current value signal. The MCU stores the above data in an internal flash memory and transmits the digital current value signal, the timestamp information and the temperature information to the wireless communication module in real time.

[0021] The wireless communication module sends the digital current value signal, timestamp information and temperature information to a remote server or smart device according to a preset time interval;

[0022] The remote server or intelligent device calculates the energy consumption of each sub-line based on the real-time voltage value of each sub-line and displays the relevant data to the user.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention directly hangs an open-type current transformer on a sub-item line to collect current value signals, thereby being able to monitor the current value of the sub-item line in real time and transmit relevant data to a remote server or intelligent device through a wireless communication module. At the same time, it can be disassembled and used multiple times in different sub-item lines, and the installation is simple and the use cost is low. Through the present invention, a user can obtain the energy consumption information of each sub-item line through a sub-item metering meter, making energy consumption management more real-time, accurate and efficient, thereby realizing the rational allocation and use of energy, effectively reducing energy waste, and improving energy utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of a device for collecting energy consumption of sub-items of lines in the present application;

[0026] Figure 2 This is a structural diagram of a device for collecting energy consumption of individual lines in Example 1 of the present application.

[0027] Figure 3 This is a schematic diagram of the installation method of a device for collecting energy consumption of individual lines in Example 1 of the present application;

[0028] Figure 4This is a schematic flow chart of the steps of a collection method of a device for collecting energy consumption of sub-items of lines in Example 3 of the present application. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0031] Example 1

[0032] See also Figure 1 and Figure 2 Embodiment 1 of the present application provides a sub-item line energy consumption collection device, including an open-type current transformer and a circuit board, the circuit board includes an MCU, a real-time clock circuit, a wireless communication module, a sampling circuit and a power supply module, the MCU is connected to the real-time clock circuit, the wireless communication module, the sampling circuit and the power supply module, the open-type current transformer is hooked on the line, the sampling circuit is connected to the output end of the open-type current transformer, and the wireless communication module is wirelessly connected to a remote server or a smart device.

[0033] Among them, in this embodiment 1, the sub-item energy consumption collection device also includes a circuit board housing, the open-type current transformer includes a fixed part and a detachable part, the fixed part is embedded in the circuit board housing for connection, and the detachable part is connected to the fixed part by a buckle. The open-type current transformer also includes a transformer housing, the transformer housing includes a fixed housing and a detachable housing, the fixed housing is fixedly connected to the circuit board housing, and the connection between the detachable housing and the fixed housing has a buckle connection design. It should be noted that in other embodiments, threaded connection or other connection methods can also be used. The circuit board housing and the transformer housing are both made of ABS plastic. The use of an insulating plastic housing is not only light and durable, but also provides electrical insulation to ensure safe isolation between the transformer and the cable. It should be noted that in other embodiments, PBT plastic or other light and non-interference materials can also be used. The use of an open-type current transformer is convenient for maintenance and disassembly. If it is necessary to replace the sub-item line for measurement or maintain the cable, the transformer can be easily opened without cutting the cable or performing a complicated disassembly process.

[0034] In this embodiment 1, the sub-item energy consumption collection device is also integrated with a temperature sensor. The signal output end of the temperature sensor is connected to the MCU to collect temperature information of the sub-item lines in real time, and send it to a remote server or smart device through a wireless communication module to let the user know, thereby further increasing the safety of electricity use.

[0035] Preferably, in this embodiment 1, the wireless communication module includes a WIFI module and a 4G module, which allows the user to configure the communication parameters of the wireless communication module and choose to use WIFI or 4G network to connect to a remote server or other smart device.

[0036] Preferably, in this embodiment 1, the power supply module includes a detachable lithium battery and a power management circuit, the power management circuit is connected to the MCU and the battery, and the sampling circuit includes an operational amplifier circuit and a filter circuit.

[0037] Preferably, in this embodiment 1, the sampling circuit includes an operational amplifier circuit and a filter circuit, the operational amplifier circuit is connected to the output end of the current transformer, the filter circuit is connected to the output end of the operational amplifier circuit, and the output end of the filter circuit is connected to the MCU.

[0038] In this embodiment 1, the parameters of some devices are as follows:

[0039] Open-type current transformer: Use open-type current transformer with a rated current range of 0.1-100A and an accuracy of ±1%. Figure 3 , Figure 3 This is the installation method of the open-type current transformer: the transformer adopts a snap-on design and can be quickly fixed on the circuit conductor without cutting the busbar and affecting the user's electricity consumption.

[0040] MCU: It uses the STM32F103 main control chip with a 16-bit ADC, a sampling rate of 1000 times / second, and built-in 256KB Flash and 20KB RAM.

[0041] Wireless communication module: Use the ESP8266 Wi-Fi module, which supports 802.11b / g / n protocols and has a maximum transmission rate of 150Mbps. Use the Quectel RM500Q 4G module, which supports the global 4G LTE frequency band, with a maximum data rate of 150Mbps downlink and 50Mbps uplink. The interface supports USB 2.0, UART, I2C, and SPI.

[0042] Real-time clock circuit: It uses a real-time clock module model DS3231 with an accuracy of ±0.025% / year and a temperature compensation function.

[0043] Sampling circuit: The operational amplifier circuit uses the high-precision operational amplifier OPA2188, with an input bias current of less than 10pA.

[0044] Power supply module: Powered by 3.7V lithium battery with a capacity of 1000mAh, supporting low power consumption mode. The battery performs voltage conversion and voltage regulation through the power management circuit to ensure stable power supply for MCU and other modules.

[0045] Example 2

[0046] Based on Example 1, this Example 2 further describes the connection and functions of some modules of a device for collecting energy consumption of sub-items of lines in Example 1:

[0047] The open-type current transformer is responsible for collecting the current value signal and performing preliminary amplification and filtering through the operational amplifier circuit and filter circuit in the sampling circuit, and then sending it to the ADC analog-to-digital conversion chip of the MCU for analog-to-digital conversion and data processing. The MCU is responsible for the control of the collection device and the analog-to-digital conversion of the current value signal, as well as the storage and processing of various types of data.

[0048] The MCU communicates with the real-time clock circuit through the I2C interface to obtain accurate timestamp information, which is used to mark the time of each current value signal sampling point and temperature information sampling point to ensure the timeliness of the data.

[0049] The MCU communicates with the wireless communication module through the UART interface and sends the processed data to the wireless communication module, which is responsible for wirelessly transmitting the relevant energy consumption data to the remote server or smart device at a preset time interval (usually 5S, 10S, 30S or 1 minute).

[0050] The MCU is directly connected to the power management circuit of the power supply module. The battery in the power supply module performs voltage conversion and voltage regulation through the power management circuit to ensure stable power supply for the MCU and other modules.

[0051] Other technical details of this embodiment 2 are the same as those of embodiment 1 and will not be repeated here.

[0052] Example 3

[0053] See also Figure 4 Based on Embodiment 1 and Embodiment 2, this Embodiment 3 provides a collection method for a sub-item line energy consumption collection device, which is applied to a sub-item line energy consumption collection device in Embodiment 1 and Embodiment 2. The collection method has the following specific steps:

[0054] Hang the open-type current transformer directly on the sub-item line, turn on the device, initialize the system with MCU, and configure the wireless communication parameters of the wireless communication module to connect to WIFI or communicate with the remote server or smart device through the 4G network;

[0055] The MCU controls the open-type current transformer and the sampling circuit to collect the current value signal. Meanwhile, the real-time clock circuit records the timestamp information, and the temperature sensor collects the temperature information of the sub-item circuit.

[0056] The MCU receives the current value signal, the timestamp information and the temperature information and performs analog-to-digital conversion on the current value signal to obtain a digital current value signal. The MCU stores the above data in an internal flash memory and transmits the digital current value signal, the timestamp information and the temperature information to the wireless communication module in real time.

[0057] The wireless communication module sends the digital current value signal, timestamp information and temperature information to a remote server or smart device according to a preset time interval;

[0058] The remote server or smart device calculates the energy consumption of each sub-line based on the real-time voltage value of each sub-line (the sub-lines within a unit user or home use the same set of voltages) and displays the relevant data to the user.

[0059] A more specific embodiment is as follows:

[0060] Installation: Connect the open-type current transformer directly to the sub-circuits of the household circuit, such as lighting, sockets and air conditioning circuits.

[0061] Configuration: Use the smartphone APP to configure the wireless communication parameters of the itemized current acquisition device and connect to the home Wi-Fi network.

[0062] Sampling and transmission: After the device is turned on, the MCU continuously calculates the sampled current value and saves it. The wireless communication module sends the collected current value to the home energy management center APP at regular intervals (for example, every minute).

[0063] Energy consumption calculation and display: After receiving the current value, the Home Energy Management Center APP combines the real-time voltage value to calculate the energy consumption of each sub-line. The energy consumption data is displayed to the user through smart devices (such as smartphones or computers). Users can adjust their electricity usage habits based on the energy consumption data to achieve energy saving.

[0064] Other technical details of this embodiment 3 are the same as those of embodiment 1 or embodiment 2 and will not be repeated here.

[0065] In summary, the sub-item line energy consumption collection device of the present invention utilizes the characteristics of using the same set of voltages within a unit user or a family, collects real-time current and transmits it to other devices to calculate energy consumption, thereby achieving the goal of simple installation and low cost of use. The device can be easily snap-fitted and installed on each sub-item line, and can collect current, temperature information and time information of each sub-item line without powering off, and forward the relevant data to other devices, which calculate and display the energy consumption data of the sub-item line, thereby achieving accurate measurement and management of energy consumption.

[0066] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A device for collecting energy consumption of sub-items of lines, characterized in that: It includes an open-type current transformer and a circuit board, wherein the circuit board includes an MCU, a real-time clock circuit, a wireless communication module, a sampling circuit and a power supply module, the MCU is connected with the real-time clock circuit, the wireless communication module, the sampling circuit and the power supply module, the open-type current transformer is hooked on the line, the sampling circuit is connected with the output end of the open-type current transformer, and the wireless communication module is wirelessly connected with a remote server or a smart device.

2. A device for collecting energy consumption of sub-items of lines according to claim 1, characterized in that: The sub-item energy consumption collection device also includes a circuit board housing, and the open-type current transformer includes a fixed part and a detachable part, the fixed part is embedded in the circuit board housing for connection, and the detachable part is connected to the fixed part by a snap or a thread.

3. A device for collecting energy consumption of sub-items of lines according to claim 2, characterized in that: The open-type current transformer also includes a transformer housing, which includes a fixed housing and a detachable housing. The fixed housing is fixedly connected to the circuit board housing, and the connection between the detachable housing and the fixed housing has a snap-on or threaded connection design.

4. The device for collecting energy consumption of sub-items of a line according to claim 3, characterized in that: The circuit board housing and the transformer housing are both made of ABS plastic or PBT plastic.

5. The device for collecting energy consumption of sub-items of a line according to claim 1, characterized in that: The item-by-item energy consumption collection device is also integrated with a temperature sensor, and a signal output end of the temperature sensor is connected to the MCU.

6. The device for collecting energy consumption of individual lines according to claim 1, characterized in that: The wireless communication module includes a WIFI module and a 4G module.

7. The device for collecting energy consumption of individual lines according to claim 1, characterized in that: The power supply module includes a detachable lithium battery.

8. The device for collecting energy consumption of individual lines according to claim 7, characterized in that: The power supply module also includes a power management circuit, and the power management circuit is connected to the MCU and the battery.

9. The device for collecting energy consumption of individual lines according to claim 1, characterized in that: The sampling circuit includes an operational amplifier circuit and a filter circuit. The operational amplifier circuit is connected to the output end of the current transformer, the filter circuit is connected to the output end of the operational amplifier circuit, and the output end of the filter circuit is connected to the MCU.

10. A collection method of a sub-item line energy consumption collection device, applied to a sub-item line energy consumption collection device such as one of claims 1 to 9, characterized in that: The collection method comprises the following steps: Hang the open-type current transformer directly on the sub-item line, turn on the device, initialize the system with MCU, and configure the wireless communication parameters of the wireless communication module to connect to WIFI or communicate with the remote server or smart device through the 4G network; The MCU controls the open-type current transformer and the sampling circuit to collect the current value signal. Meanwhile, the real-time clock circuit records the timestamp information, and the temperature sensor collects the temperature information of the sub-item circuit. The MCU receives the current value signal, the timestamp information and the temperature information and performs analog-to-digital conversion on the current value signal to obtain a digital current value signal. The MCU stores the above data in an internal flash memory and transmits the digital current value signal, the timestamp information and the temperature information to the wireless communication module in real time. The wireless communication module sends the digital current value signal, timestamp information and temperature information to a remote server or smart device according to a preset time interval; The remote server or intelligent device calculates the energy consumption of each sub-line based on the real-time voltage value of each sub-line and displays the relevant data to the user.

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