CN205749669U - A kind of three-phase remote bill control intelligent electric energy meter - Google Patents
A kind of three-phase remote bill control intelligent electric energy meter Download PDFInfo
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Abstract
本实用新型公开了一种三相远程费控智能电能表，包括壳体和设置在壳体内的中央处理单元、电能计量处理单元、电压采样单元、电流采样单元、LCD显示单元、RS485接口单元、GPRS无线通信单元、数据存储单元、按键接口单元和电源单元；电压采样单元和电流采样单元分别与电能计量处理单元连接，电能计量处理单元、LCD显示单元、RS485接口单元、GPRS无线通信单元、数据存储单元、按键接口单元分别与中央处理单元连接，电源单元分别与中央处理单元和电能计量处理单元连接以提供电力支持。本实用新型具有集成度高、功能齐全、性能稳定、结构紧凑、精度高、功耗低的优点。
The utility model discloses a three-phase remote charge control intelligent electric energy meter, which comprises a shell, a central processing unit arranged in the shell, an electric energy measurement processing unit, a voltage sampling unit, a current sampling unit, an LCD display unit, an RS485 interface unit, GPRS wireless communication unit, data storage unit, key interface unit and power supply unit; voltage sampling unit and current sampling unit are respectively connected with the electric energy metering processing unit, electric energy metering processing unit, LCD display unit, RS485 interface unit, GPRS wireless communication unit, data The storage unit and the key interface unit are respectively connected to the central processing unit, and the power supply unit is respectively connected to the central processing unit and the electric energy metering processing unit to provide power support. The utility model has the advantages of high integration, complete functions, stable performance, compact structure, high precision and low power consumption.
Description
技术领域 technical field
本实用新型涉及一种电子仪器仪表，尤其是涉及一种用于电网运行管理且具有电能采集和无线通信功能的三相费控智能电能表。 The utility model relates to an electronic instrument and meter, in particular to a three-phase cost-controlled intelligent electric energy meter which is used for power grid operation management and has the functions of electric energy collection and wireless communication.
背景技术 Background technique
在电力系统中，特别是中低压配电系统中，大量非线性、冲击性负荷的使用，给电力系统的电能计量带来了挑战。而且随着工业的发展和科技的进步，企业生产技术管理对工业电能的准确计量提出了更高的要求，节能降耗是现代工业进步的主要标志之一，提高电能有效利用率，对电能质量进行综合监测和治理已成为迫切需要解决的问题。 In the power system, especially in the medium and low voltage power distribution system, the use of a large number of nonlinear and impact loads brings challenges to the electric energy metering of the power system. Moreover, with the development of industry and the advancement of science and technology, the production technology management of enterprises has put forward higher requirements for the accurate measurement of industrial electric energy. Energy saving and consumption reduction are one of the main signs of modern industrial progress. Comprehensive monitoring and governance has become an urgent need to be resolved.
要实现对电能质量的综合治理，就必须实现有功功率的在线分析与实时监测，以了解电能的有效利用水平，作为电力管理系统组成部分的电力监控仪表在其中起着至关重要的作用。为提高工作效能和自动化管理水平，目前RS485技术、电力线载波技术在电能表自动抄表方面得到了应用，但在具体应用中的效果并不理想，主要表现在：布线繁琐复杂，投资大，费用高，而且经常出现掉线、传输延迟现象，影响了工作效率和管理水平，由此可见，研究开发一种传输速度快、性能稳定、成本低、使用范围广的三相远程费控的智能电能表在本领域可以取得较好的经济效益。 To realize the comprehensive management of power quality, it is necessary to realize the online analysis and real-time monitoring of active power to understand the effective utilization level of electric energy, and the power monitoring instrument as a part of the power management system plays a vital role in it. In order to improve work efficiency and automation management level, RS485 technology and power line carrier technology have been applied in the automatic meter reading of electric energy meters, but the effect in specific applications is not ideal, mainly in the following aspects: cumbersome and complicated wiring, large investment, and high cost. High, and frequent dropouts and transmission delays have affected work efficiency and management levels. It can be seen that research and development of a three-phase remote cost-controlled smart power system with fast transmission speed, stable performance, low cost, and wide application range Tables can achieve better economic benefits in this field.
实用新型内容 Utility model content
本实用新型的目的是提供一种三相远程费控智能电能表，其具有集成度高、功能齐全、性能稳定、结构紧凑、精度高、功耗低的优点，本实用新型设置了无线通信功能，可较好地适应现代电网运行管理的要求。 The purpose of this utility model is to provide a three-phase remote cost control intelligent electric energy meter, which has the advantages of high integration, complete functions, stable performance, compact structure, high precision, and low power consumption. The utility model is equipped with a wireless communication function , can better adapt to the requirements of modern power grid operation and management.
为解决现有技术中的三相远程费控电能表其在实际应用中容易出现掉线、传输延迟等现象，影响了稳定性和测量精度的问题，本实用新型提供的一种三相远程费控智能电能表，包括壳体和设置在壳体内的中央处理单元、电能计量处理单元、电压采样单元、电流采样单元、LCD显示单元、RS485接口单元、GPRS无线通信单元、数据存储单元、按键接口单元和电 源单元；其中，所述电压采样单元和电流采样单元分别与电能计量处理单元连接，电能计量处理单元、LCD显示单元、RS485接口单元、GPRS无线通信单元、数据存储单元、按键接口单元分别与中央处理单元连接，电源单元分别与中央处理单元和电能计量处理单元连接以提供电力支持； In order to solve the problem that the three-phase remote fee-controlled electric energy meter in the prior art is prone to disconnection and transmission delay in practical applications, which affects the stability and measurement accuracy, the utility model provides a three-phase remote fee Control smart electric energy meter, including the shell and the central processing unit set in the shell, electric energy measurement processing unit, voltage sampling unit, current sampling unit, LCD display unit, RS485 interface unit, GPRS wireless communication unit, data storage unit, key interface unit and a power supply unit; wherein, the voltage sampling unit and the current sampling unit are respectively connected to the electric energy metering processing unit, and the electric energy metering processing unit, LCD display unit, RS485 interface unit, GPRS wireless communication unit, data storage unit, and key interface unit are respectively Connected with the central processing unit, the power supply unit is respectively connected with the central processing unit and the electric energy metering processing unit to provide power support;
所述电压采样单元和电流采样单元分别用于监测电路中的电压和电流，并将监测到的电压和电流模拟量发送给电能计量处理单元；电能计量处理单元对电压和电流模拟量进行处理并将得到的电压和电流数字量发送给中央处理单元，中央处理单元将电压和电流数字量发送给LCD显示单元以显示电测量数据，所述电测量数据为电压和电流的数字量； The voltage sampling unit and the current sampling unit are used to monitor the voltage and current in the circuit respectively, and send the monitored voltage and current analog quantities to the electric energy metering processing unit; the electric energy metering processing unit processes the voltage and current analog quantities and Send the obtained voltage and current digital quantities to the central processing unit, and the central processing unit sends the voltage and current digital quantities to the LCD display unit to display electrical measurement data, and the electrical measurement data are digital quantities of voltage and current;
所述RS485接口单元、GPRS无线通信单元与中央处理单元之间分别建立有双向信息交换通道，中央处理单元通过RXD485和TXD485与RS485接口单元进行数据交换并通过RS485总线将电测量数据发送到主站；GPRS无线通信单元用于中央处理单元与外部设备建立无线连接以传输电测量数据和响应外部有效通信命令；数据存储单元通过I2C两线式串行总线与中央处理单元建立信息交换通道以进行数据存取，按键接口单元用于设置输入参数以完成键显功能。 Two-way information exchange channels are respectively established between the RS485 interface unit, GPRS wireless communication unit and the central processing unit, and the central processing unit exchanges data with the RS485 interface unit through RXD485 and TXD485 and sends the electrical measurement data to the master station through the RS485 bus ;The GPRS wireless communication unit is used for the central processing unit to establish a wireless connection with external devices to transmit electrical measurement data and respond to external effective communication commands; the data storage unit establishes an information exchange channel with the central processing unit through the I2C two-wire serial bus for data exchange. Access, the key interface unit is used to set the input parameters to complete the key display function.
进一步的，本实用新型一种三相远程费控智能电能表，其中，所述电能计量处理单元和中央处理单元之间采用SPI全双工同步通信总线方式建立连接。 Further, the utility model is a three-phase remote cost-control intelligent electric energy meter, wherein the connection between the electric energy measurement processing unit and the central processing unit is established by means of SPI full-duplex synchronous communication bus.
进一步的，本实用新型一种三相远程费控智能电能表，其中，还包括与中央处理单元连接的红外通信单元，并在红外通信单元与中央处理单元之间建立双向信息交换通道，红外通信单元用于中央处理单元与外部智能设备或红外遥控器建立连接以进行电测量数据的传输，并响应外部有效通信命令。 Further, the utility model is a three-phase remote fee-controlled smart energy meter, which also includes an infrared communication unit connected to the central processing unit, and establishes a two-way information exchange channel between the infrared communication unit and the central processing unit, and the infrared communication The unit is used for the central processing unit to establish a connection with an external smart device or an infrared remote controller for the transmission of electrical measurement data, and to respond to external effective communication commands.
进一步的，本实用新型一种三相远程费控智能电能表，其中，还包括与中央处理单元连接的脉冲测试单元，并在脉冲测试单元与中央处理单元之间建立双向信息交换通道，脉冲测试单元用于电能测试脉冲输出。 Further, the utility model is a three-phase remote cost-control intelligent electric energy meter, which also includes a pulse test unit connected to the central processing unit, and establishes a two-way information exchange channel between the pulse test unit and the central processing unit, and the pulse test The unit is used for energy test pulse output.
进一步的，本实用新型一种三相远程费控智能电能表，其中，还包括与中央处理单元连接的检测电路单元，所述检测电路单元用于用于检测非法开表盖操作。 Further, the utility model is a three-phase remote fee-controlled intelligent electric energy meter, which further includes a detection circuit unit connected to the central processing unit, and the detection circuit unit is used to detect illegal operation of opening the meter cover.
进一步的，本实用新型一种三相远程费控智能电能表，其中，还包括与中央处理单元连接的多功能输出单元，所述多功能输出单元用于与外部设备建立连接以输出电测量数据。 Further, the utility model is a three-phase remote fee-controlled smart energy meter, which also includes a multifunctional output unit connected to the central processing unit, and the multifunctional output unit is used to establish a connection with an external device to output electrical measurement data .
进一步的，本实用新型一种三相远程费控智能电能表，其中，所述电压采样单元由电阻分压网路和滤波电路组成；所述电流采样单元由电流互感器、电容和电阻组成。 Further, the utility model is a three-phase remote cost control smart energy meter, wherein the voltage sampling unit is composed of a resistor divider network and a filter circuit; the current sampling unit is composed of a current transformer, a capacitor and a resistor.
进一步的，本实用新型一种三相远程费控智能电能表，其中，所述各单元采用的器件参 数为：中央处理单元采用意法半导体STM32F101VE，电能计量处理单元采用炬力ATT7022，LCD显示单元液晶驱动电路采用BU97950FUV，RS485接口单元采用MAX13085，数据存储单元采用FM24CL64、FM24C256A和MX25L3208D。 Further, the utility model is a three-phase remote cost-controlled smart energy meter, wherein the device parameters used by each unit are: the central processing unit adopts STMicroelectronics STM32F101VE, the electric energy measurement processing unit adopts Actions ATT7022, and the LCD display unit The liquid crystal driving circuit adopts BU97950FUV, the RS485 interface unit adopts MAX13085, and the data storage unit adopts FM24CL64, FM24C256A and MX25L3208D.
本实用新型一种三相远程费控智能电能表与现有技术相比，具有以下优点：(1)本实用新型通过设置中央处理单元、电能计量处理单元、电压采样单元、电流采样单元、LCD显示单元、RS485接口单元、GPRS无线通信单元、数据存储单元、按键接口单元和电源单元，并使电压采样单元和电流采样单元分别与电能计量处理单元连接，使电能计量处理单元、LCD显示单元、RS485接口单元、GPRS无线通信单元、数据存储单元、按键接口单元分别与中央处理单元连接。在实际应用中让GPRS无线通信单元与中央处理单元之间分别建立有双向信息交换通道，使中央处理单元通过GPRS无线通信单元可以与外部设备建立无线连接以传输电测量数据和响应外部有效通信命令，实现了无线通信功能和自动抄表目的。本实用新型充分利用了GPRS无线网络中提供的无线IP，用户只需安装终端模块即可实现实时传输底层硬件所采集的数据，无需专门布线即可实现技术目的，具有投资小、费用低、收益大、抄表范围广的优势，而且在GPRS服务网络平台上构建远程网络电能表，在传输过程中不会出现掉线、传输延迟等故障，其实时性强、及时采集数据，且可以远程控制。另外由于利用的是GPRS公网平台，系统的传输量较大，传输速度也得到了增强。(2)本实用新型具有集成度高、功耗低、精度高、性能稳定，是根据电网和工业自动化管理的实际状况进行设计的，可广泛应用于电网运行管理系统，适用范围较广，实用性较强。 Compared with the prior art, a three-phase remote fee-controlled intelligent electric energy meter of the utility model has the following advantages: (1) the utility model is equipped with a central processing unit, an electric energy measurement processing unit, a voltage sampling unit, a current sampling unit, an LCD Display unit, RS485 interface unit, GPRS wireless communication unit, data storage unit, key interface unit and power supply unit, and connect the voltage sampling unit and current sampling unit with the electric energy measurement processing unit respectively, so that the electric energy measurement processing unit, LCD display unit, The RS485 interface unit, the GPRS wireless communication unit, the data storage unit and the key interface unit are respectively connected with the central processing unit. In practical applications, two-way information exchange channels are established between the GPRS wireless communication unit and the central processing unit, so that the central processing unit can establish a wireless connection with external devices through the GPRS wireless communication unit to transmit electrical measurement data and respond to external effective communication commands. , to achieve the purpose of wireless communication and automatic meter reading. The utility model makes full use of the wireless IP provided in the GPRS wireless network. The user only needs to install the terminal module to realize the real-time transmission of the data collected by the underlying hardware, and the technical purpose can be realized without special wiring. It has the advantages of small investment, low cost and high income The advantages of large size and wide range of meter reading, and the construction of remote network energy meters on the GPRS service network platform, there will be no failures such as dropped connections and transmission delays during the transmission process. It has strong real-time performance, timely data collection, and can be remotely controlled. . In addition, due to the use of the GPRS public network platform, the transmission capacity of the system is relatively large, and the transmission speed has also been enhanced. (2) The utility model has high integration, low power consumption, high precision, and stable performance. It is designed according to the actual situation of power grid and industrial automation management, and can be widely used in power grid operation management systems. It has a wide range of applications and is practical strong sex.
下面结合附图所示实施例对本实用新型一种三相远程费控智能电能表作进一步详细说明： A three-phase remote charge control intelligent electric energy meter of the present invention will be further described in detail below in conjunction with the embodiments shown in the accompanying drawings:
附图说明 Description of drawings
图1为本实用新型一种三相远程费控智能电能表的结构示意图； Fig. 1 is the structural representation of a kind of three-phase remote cost control intelligent electric energy meter of the utility model;
图2为本实用新型一种三相远程费控智能电能表中的中央处理单元的连接示意图； Fig. 2 is a connection schematic diagram of a central processing unit in a three-phase remote fee-controlled smart energy meter of the present invention;
图3为本实用新型一种三相远程费控智能电能表中的电能计量处理单元的连接示意图； Fig. 3 is a schematic diagram of the connection of the electric energy measurement processing unit in a three-phase remote cost control smart electric energy meter of the present invention;
图4为本实用新型一种三相远程费控智能电能表中的电压采样单元的连接示意图； Fig. 4 is a connection schematic diagram of a voltage sampling unit in a three-phase remote fee-controlled smart energy meter of the present invention;
图5为本实用新型一种三相远程费控智能电能表中的电流采样单元的连接示意图； Fig. 5 is a connection schematic diagram of a current sampling unit in a three-phase remote fee-controlled smart energy meter of the present invention;
图6为本实用新型一种三相远程费控智能电能表中的LCD显示单元的连接示意图； Fig. 6 is a schematic diagram of the connection of the LCD display unit in a three-phase remote fee-controlled smart energy meter of the present invention;
图7为本实用新型一种三相远程费控智能电能表中的RS485接口单元的连接示意图； Figure 7 is a schematic diagram of the connection of the RS485 interface unit in a three-phase remote fee-controlled smart energy meter of the present invention;
图8为本实用新型一种三相远程费控智能电能表中的GPRS无线通信单元的连接示意图； Figure 8 is a schematic diagram of the connection of the GPRS wireless communication unit in a three-phase remote fee-controlled smart energy meter of the present invention;
图9为本实用新型一种三相远程费控智能电能表中的数据存储单元的连接示意图； Fig. 9 is a schematic diagram of the connection of the data storage unit in a three-phase remote fee-controlled smart energy meter of the present invention;
图10为本实用新型一种三相远程费控智能电能表中的按键接口单元的连接示意图； Fig. 10 is a schematic diagram of the connection of the button interface unit in a three-phase remote fee-controlled smart energy meter of the present invention;
图11为本实用新型一种三相远程费控智能电能表中的电源单元的连接示意图； Fig. 11 is a schematic diagram of the connection of the power supply unit in a three-phase remote fee-controlled smart energy meter of the present invention;
图12为本实用新型一种三相远程费控智能电能表中的红外通信单元的连接示意图。 Fig. 12 is a schematic diagram of the connection of the infrared communication unit in a three-phase remote fee-controlled smart energy meter of the present invention.
具体实施方式 detailed description
如图1至图12所示本实用新型一种三相远程费控智能电能表的具体实施方式，包括壳体和设置在壳体内的中央处理单元1、电能计量处理单元2、电压采样单元3、电流采样单元4、LCD显示单元5、RS485接口单元6、GPRS无线通信单元7、数据存储单元8、按键接口单元9和电源单元10；使电压采样单元3和电流采样单元4分别与电能计量处理单元2连接，使电能计量处理单元2、LCD显示单元5、RS485接口单元6、GPRS无线通信单元7、数据存储单元8、按键接口单元9分别与中央处理单元1连接，并使电源单元10分别与中央处理单元1和电能计量处理单元2连接以提供电力支持。 As shown in Figures 1 to 12, a specific embodiment of a three-phase remote fee-controlled smart energy meter of the present invention includes a housing and a central processing unit 1, an electric energy measurement processing unit 2, and a voltage sampling unit 3 arranged in the housing. , current sampling unit 4, LCD display unit 5, RS485 interface unit 6, GPRS wireless communication unit 7, data storage unit 8, key interface unit 9 and power supply unit 10; the voltage sampling unit 3 and the current sampling unit 4 are connected with the electric energy metering unit respectively The processing unit 2 is connected, so that the power metering processing unit 2, the LCD display unit 5, the RS485 interface unit 6, the GPRS wireless communication unit 7, the data storage unit 8, and the key interface unit 9 are respectively connected to the central processing unit 1, and the power supply unit 10 It is respectively connected with the central processing unit 1 and the power metering processing unit 2 to provide power support.
实际应用中，通过电压采样单元3和电流采样单元4分别监测电路中的电压和电流，并将监测到的电压和电流模拟量发送给电能计量处理单元2；由电能计量处理单元2对电压和电流模拟量进行处理并将得到的电压和电流数字量发送给中央处理单元1，然后由中央处理单元1将电压和电流数字量发送给LCD显示单元5以显示电测量数据。电测量数据是指电压和电流的数字量。 In practical applications, the voltage and current in the circuit are monitored respectively by the voltage sampling unit 3 and the current sampling unit 4, and the monitored voltage and current analog quantities are sent to the electric energy metering processing unit 2; The current analog quantity is processed and the obtained digital quantity of voltage and current is sent to the central processing unit 1, and then the central processing unit 1 sends the digital quantity of voltage and current to the LCD display unit 5 to display the electrical measurement data. Electrical measurement data refers to digital quantities of voltage and current.
让RS485接口单元6、GPRS无线通信单元7与中央处理单元1之间分别建立双向信息交换通道，使中央处理单元1通过RXD485和TXD485与RS485接口单元6进行数据交换并通过RS485总线将电测量数据发送到主站；GPRS无线通信单元7用于中央处理单元1与外部设备建立无线连接以传输单测量数据和响应外部有效通信命令；让数据存储单元8通过I2C两线式串行总线与中央处理单元1建立信息交换通道以进行数据存取；按键接口单元9用于设置输入参数以完成键显功能。 Let the RS485 interface unit 6, the GPRS wireless communication unit 7 and the central processing unit 1 respectively establish two-way information exchange channels, so that the central processing unit 1 can exchange data with the RS485 interface unit 6 through RXD485 and TXD485 and transfer the electrical measurement data through the RS485 bus. Send to master station; GPRS wireless communication unit 7 is used for central processing unit 1 to establish wireless connection with external equipment to transmit single measurement data and respond to external effective communication command; Let data storage unit 8 communicate with central processing unit through I2C two-wire serial bus Unit 1 establishes an information exchange channel for data access; key interface unit 9 is used to set input parameters to complete the key display function.
通过以上设置，让GPRS无线通信单元7与中央处理单元1之间分别建立有双向信息交换通道，使中央处理单元通过GPRS无线通信单元7可以与外部设备建立无线连接以传输电测量数据和响应外部有效通信命令，实现了无线通信功能和自动抄表目的。本实用新型充分利用了GPRS无线网络中提供的无线IP，用户只需安装终端模块即可实现实时传输底层硬件所采集的数据，无需专门布线即可实现技术目的，具有投资小、费用低、收益大、抄表范围广的优势，而且在GPRS服务网络平台上构建远程网络电能表，在传输过程中不会出现掉线、传输延迟等故障，其实时性较强，能及时采集数据，且可以远程控制。由于利用的是GPRS 公网平台，系统具有较大的传输量，传输速度也得到了增强。 Through the above settings, a two-way information exchange channel is established between the GPRS wireless communication unit 7 and the central processing unit 1, so that the central processing unit can establish a wireless connection with external equipment through the GPRS wireless communication unit 7 to transmit electrical measurement data and respond to external The effective communication command realizes the purpose of wireless communication function and automatic meter reading. The utility model makes full use of the wireless IP provided in the GPRS wireless network. The user only needs to install the terminal module to realize the real-time transmission of the data collected by the underlying hardware, and the technical purpose can be realized without special wiring. It has the advantages of small investment, low cost and high income It has the advantages of large size and wide range of meter reading, and the remote network electric energy meter is built on the GPRS service network platform. During the transmission process, there will be no failures such as dropped connections and transmission delays. It has strong real-time performance, can collect data in time, and can remote control. Due to the use of the GPRS public network platform, the system has a large transmission capacity and the transmission speed has also been enhanced.
本实用新型在实际应用中，让电能计量处理单元2和中央处理单元1之间采用SPI全双工同步通信总线方式建立连接。 In the practical application of the utility model, the connection between the electric energy measurement processing unit 2 and the central processing unit 1 is established by means of SPI full-duplex synchronous communication bus.
作为优化方案，本具体实施方式还设置了与中央处理单元1连接的红外通信单元11，并在红外通信单元11与中央处理单元1之间建立双向信息交换通道，通过红外通信单元11使中央处理单元1与外部智能设备或红外遥控器可以建立连接，以进行电测量数据的传输，响应外部有效通信命令。 As an optimized solution, this specific embodiment is also provided with an infrared communication unit 11 connected to the central processing unit 1, and a two-way information exchange channel is established between the infrared communication unit 11 and the central processing unit 1, and the central processing unit 11 is enabled through the infrared communication unit 11. Unit 1 can establish a connection with an external smart device or an infrared remote controller to transmit electrical measurement data and respond to effective external communication commands.
作为优化方案，本具体实施方式还设置了与中央处理单元1连接的脉冲测试单元12，并在脉冲测试单元12与中央处理单元1之间建立双向信息交换通道，通过脉冲测试单元12可以进行电能测试脉冲输出，以增强功能和适用范围。还设置了与中央处理单元1连接的检测电路单元13，通过检测电路单元13可以检测非法开表盖操作，以增强电网运行的安全性。并设置了与中央处理单元1连接的多功能输出单元14，以便可以与更多的外部设备建立连接，完成电测量数据输出目的。 As an optimized solution, this specific embodiment is also provided with a pulse test unit 12 connected to the central processing unit 1, and a two-way information exchange channel is established between the pulse test unit 12 and the central processing unit 1, through which the pulse test unit 12 can perform electrical energy testing. Test pulse output for enhanced functionality and scope. A detection circuit unit 13 connected to the central processing unit 1 is also provided, through which detection circuit unit 13 can detect illegal operation of opening the watch cover, so as to enhance the safety of power grid operation. And a multifunctional output unit 14 connected to the central processing unit 1 is provided so as to establish connections with more external devices to complete the purpose of outputting electrical measurement data.
需要说明的是，本实用新型中的电压采样单元3由电阻分压网路和滤波电路组成；电流采样单元4由电流互感器、电容和电阻组成。各单元采用的器件参数为：中央处理单元1采用意法半导体STM32F101VE，电能计量处理单元2采用炬力ATT7022，LCD显示单元5液晶驱动电路采用BU97950FUV，RS485接口单元6采用MAX13085，数据存储单元8采用FM24CL64、FM24C256A和MX25L3208D。 It should be noted that the voltage sampling unit 3 in the present invention is composed of a resistor divider network and a filter circuit; the current sampling unit 4 is composed of a current transformer, a capacitor and a resistor. The device parameters used by each unit are: the central processing unit 1 adopts STMicroelectronics STM32F101VE, the electric energy measurement processing unit 2 adopts Actions ATT7022, the LCD display unit 5 liquid crystal drive circuit adopts BU97950FUV, the RS485 interface unit 6 adopts MAX13085, and the data storage unit 8 adopts FM24CL64, FM24C256A, and MX25L3208D.
本实用新型采用的意法半导体STM32F101VE微处理器，是基于ARM的32位微控制器，其集成度高、资源丰富；采用的电能计量处理为炬力ATT7022，是一种高精度的三相电能专用计量芯片，适用于三相三线和三相四线应用，能够测量各相以及合相的有功功率、无功功率、视在功率、有功能量以及无功能量，同时还能测量各相电流、电压有效值、功率因数、相角、频率等参数，能充分满足三相复费率多功能电能表的需求。所有计量参数参数都可以通过SPI接口读出。本实用新型一种三相远程费控智能电能表，具有分时、分相、分向及复费率精确计量交流组合有功、有功电能，精确计量组合无功电能及各象限无功电能，精确计量正反向最大需量及四费率最大需量的功能，可定时冻结、瞬时冻结、约定冻结多种电能数据冻结记录，具有失压、失流、编程、清零、拉合闸及开盖等多种事件记录，且能实时监测电压、电流、视在功率和功率因素等多项动态参数，并通过红外、RS485、GPRS等通信方式响应外部有效通信命令，完成对电能表数据抄读以及参数。 The STMicroelectronics STM32F101VE microprocessor used in the utility model is a 32-bit microcontroller based on ARM, which has high integration and abundant resources; the electric energy metering process adopted is Actions ATT7022, which is a high-precision three-phase electric energy Dedicated metering chip, suitable for three-phase three-wire and three-phase four-wire applications, capable of measuring the active power, reactive power, apparent power, active energy and reactive energy of each phase and combined phase, and can also measure the current of each phase , RMS voltage, power factor, phase angle, frequency and other parameters can fully meet the needs of three-phase multi-rate multi-function electric energy meters. All metering parameter parameters can be read out via the SPI interface. The utility model is a three-phase remote charge control intelligent electric energy meter, which has time-sharing, phase-splitting, direction-splitting and multi-rate accurate measurement of AC combined active and active electric energy, accurate measurement of combined reactive electric energy and reactive electric energy of each quadrant, and is accurate. The function of measuring the maximum demand of forward and reverse and the maximum demand of four tariffs can be frozen at fixed time, instantaneously, and agreed to freeze a variety of electric energy data freezing records, with voltage loss, current loss, programming, clearing, closing and opening Cover and other event records, and can monitor multiple dynamic parameters such as voltage, current, apparent power and power factor in real time, and respond to external effective communication commands through infrared, RS485, GPRS and other communication methods to complete the reading of the energy meter data and parameters.
本实用新型一种三相远程费控智能电能表正常工作时，首先对电压、电流进行高精度取 样、放大，再经过计量芯片精密处理转化为数字信号，将获得的数据根据预先设定参数进行电能累计和最大需量处理，对数据进行储存并响应外界有效的通讯要求进行数据输出，并经过协处理器进行显示处理；电能计量处理产生的电能数据送到中央处理单元1并产生电能脉冲，中央处理单元1将电能数据存储，根据需要发送至LCD显示单元5、RS485接口单元6、GPRS无线通信单元7、红外通信接口单元11等输出设备。 When a three-phase remote cost-controlled intelligent electric energy meter of the utility model is working normally, the voltage and current are firstly sampled and amplified with high precision, and then converted into digital signals through precise processing by a metering chip, and the obtained data are processed according to preset parameters. Electric energy accumulation and maximum demand processing, storing data and responding to effective external communication requirements for data output, and display processing through the co-processor; electric energy data generated by electric energy metering processing is sent to the central processing unit 1 to generate electric energy pulses, The central processing unit 1 stores the electric energy data and sends them to output devices such as the LCD display unit 5, the RS485 interface unit 6, the GPRS wireless communication unit 7, and the infrared communication interface unit 11 as required.
以上实施例仅是对本实用新型的优选实施方式进行的描述，并非对本实用新型请求保护范围进行的限定，在不脱离本实用新型设计原理和精神的前提下，本领域工程技术人员依据本实用新型的技术方案做出的各种形式的变形，均应落入本实用新型权利要求书所确定的保护范围内。 The above embodiment is only a description of the preferred implementation of the present utility model, and is not a limitation to the scope of protection of the present utility model. Various forms of deformation made by the technical solution should fall within the scope of protection defined by the claims of the utility model.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106504502A (en) * | 2016-12-06 | 2017-03-15 | 国网山东省电力公司鄄城县供电公司 | The method of intelligent electric meter, intelligent electric meter management system and centralized automatic meter-reading |
| CN107064625A (en) * | 2017-06-06 | 2017-08-18 | 宁波恒力达科技有限公司 | A kind of three-phase four-wire high voltage energy table and measuring method |
| CN110829590A (en) * | 2019-10-10 | 2020-02-21 | 广州炫通电气科技有限公司 | Intelligent monitoring system, method, platform and storage medium for transformer area line loss |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106504502A (en) * | 2016-12-06 | 2017-03-15 | 国网山东省电力公司鄄城县供电公司 | The method of intelligent electric meter, intelligent electric meter management system and centralized automatic meter-reading |
| CN107064625A (en) * | 2017-06-06 | 2017-08-18 | 宁波恒力达科技有限公司 | A kind of three-phase four-wire high voltage energy table and measuring method |
| CN110829590A (en) * | 2019-10-10 | 2020-02-21 | 广州炫通电气科技有限公司 | Intelligent monitoring system, method, platform and storage medium for transformer area line loss |
| CN110829590B (en) * | 2019-10-10 | 2023-12-26 | 广州炫通电气科技有限公司 | Intelligent monitoring system, method, platform and storage medium for line loss of transformer area |
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