Single-phase multifunctional guide rail type electric energy meter based on high-speed data acquisition

Abstract

The utility model provides a single-phase multifunctional guide rail type electric energy meter based on high-speed data acquisition, which solves the problems of poor analysis effect of power grid data and the like, and comprises a master control metering MCU (Microprogrammed Control Unit) module connected with a pulse output module, the main control metering MCU module is connected with an LCD display module, a key control module, a communication module and a data storage module, the main control metering MCU module is connected with a power grid through a power supply module, and a power grid data sampling module is arranged between the main control metering MCU module and the power grid. The system has the advantages of good power grid analysis effect, stable operation and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electric energy meter, concretely relates to a single -phase multifunctional guide rail type electric energy meter based on high -speed data acquisition. BACKGROUND

[0002] With the rapid development of industrial automation, intelligent manufacturing and internet of things technology, the market demand for high performance, multi -functional data acquisition equipment is increasing. Especially in the field of electric power, industry, energy monitoring, high -speed data acquisition becomes one of the key demands. In the ordinary electric power field, electric energy meter is mainly used for measuring household electricity consumption, including household appliance electricity, lighting, air conditioning and other electric equipment. High sampling rate electric energy meter can help the family to better grasp the electricity consumption, thereby helping to save electricity and reduce electricity expenses. In the industrial field, electric energy meter is used for monitoring and controlling power usage, optimizing energy consumption, and reducing production cost. High sampling rate electric energy meter can more accurately capture the changes of power data, and provide more accurate and detailed electricity information. In the field of energy system, electric energy meter is used for monitoring and controlling the input and output of energy, optimizing the utilization and distribution of energy. High sampling rate electric energy meter can more accurately monitor and manage the power flow of distributed energy system. But in the actual use process, the existing electric energy meter data acquisition rate is slow, and the analysis and monitoring of power grid data are insufficient.

[0003] In order to solve the problems existing in the prior art, people have carried on the long-term exploration, and have put forward all sorts of solutions. For example, Chinese patent document discloses a single-phase guide rail electric energy meter [201420490874.5], which comprises: single-phase electric acquisition unit, metering unit and input and output control unit connected in sequence; the metering unit comprises: filter module, harmonic analysis module, signal processing module, electric parameter calculation module and data calibration module connected in sequence, one end of the filter module is electrically connected with the single-phase electric acquisition unit, the input and output control unit comprises: microprocessor module and I / O control module; the microprocessor module is electrically connected with the I / O control module and the value comparison sub module in the data calibration module, respectively, the value preset sub module of the data calibration module in the metering unit is electrically connected with the value generation sub module and the I / O control module in the input and output control unit.

[0004] The above scheme solves the problem of power grid metering accuracy to some extent, but the scheme still has many problems, such as insufficient analysis and monitoring of power grid data. SUMMARY

[0005] The utility model aims at above -mentioned problem, provides a single -phase multifunctional guide rail type electric energy meter based on high -speed data acquisition of reasonable in design, data acquisition rate is high.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a single-phase multi-functional rail-mounted energy meter based on high-speed data acquisition, including a main control metering MCU module, a pulse output module connected to the main control metering MCU module, an LCD display module, a button control module, a communication module and a data storage module connected to the main control metering MCU module, the main control metering MCU module being connected to the power grid through a power supply module, and a power grid data sampling module being provided between the main control metering MCU module and the power grid.

[0007] In the aforementioned single-phase multi-functional rail-mounted energy meter based on high-speed data acquisition, the power module includes a power chip IC1 and a voltage regulator IC2 connected to the power chip IC1.

[0008] In the aforementioned single-phase multi-functional rail-mounted energy meter based on high-speed data acquisition, the main control metering MCU module includes an MCU unit U2 using the SY7T233 model, and the MCU unit U2 is equipped with a memory chip IC6.

[0009] In the aforementioned single-phase multi-functional rail-mounted energy meter based on high-speed data acquisition, the LCD display module includes a driver chip LCD1 and a display chip IC5 connected to the driver chip LCD1.

[0010] In the aforementioned single-phase multi-functional rail-mounted energy meter based on high-speed data acquisition, the button control module includes touch chip IC3 and touch chip IC4.

[0011] In the aforementioned single-phase multi-functional rail-mounted energy meter based on high-speed data acquisition, the main control metering MCU module is equipped with a metering module and a rate detection module, and the rate detection module has an optocoupler U3.

[0012] In the aforementioned single-phase multi-functional rail-mounted energy meter based on high-speed data acquisition, the pulse output module includes a pulse lamp LED1 and a transistor Q1 connected to the pulse lamp LED1.

[0013] In the aforementioned single-phase multi-functional rail-mounted energy meter based on high-speed data acquisition, the communication module includes a communication chip U1, and the communication module is equipped with communication chips JP1, JP2, and JP3.

[0014] In the aforementioned single-phase multi-functional rail-mounted energy meter based on high-speed data acquisition, the communication module supports Modbus-RTU and DLT645-2007 protocols.

[0015] In the aforementioned single-phase multi-functional rail-mounted energy meter based on high-speed data acquisition, the power grid data sampling module includes several energy meters connected in parallel with the power grid. The energy meters are connected to the main control metering MCU module via an RS485 bus.

[0016] Compared with existing technologies, the advantages of this invention are as follows: the meter data refresh time is less than or equal to 100ms. This fast data refresh time facilitates the analysis and monitoring of power grid data and is applicable to situations with high energy consumption monitoring requirements, such as charging piles and photovoltaic power generation. The meter has RS485 communication capabilities, supporting Modbus-RTU and DLT645-2007 protocols. Through RS485 communication, power grid and meter parameters can be obtained. The meter will proactively report any abnormal data to the terminal settings, achieving real-time monitoring. The meter supports dual-rate mode and external rate detection, switching the current rate by detecting external switch inputs. Attached Figure Description

[0017] Figure 1 This is a system block diagram of this utility model;

[0018] Figure 2 This is the circuit schematic diagram of the power module of this utility model;

[0019] Figure 3 This is the circuit schematic diagram of the main control metering MCU module of this utility model;

[0020] Figure 4 This is a circuit diagram of the LCD display module of this utility model;

[0021] Figure 5 This is the circuit schematic diagram of the button control module of this utility model;

[0022] Figure 6 This is a circuit diagram of the metering module and rate detection module of this utility model;

[0023] Figure 7 This is a circuit schematic diagram of the communication module of this utility model;

[0024] In the diagram, the main control metering MCU module 1, pulse output module 2, LCD display module 3, button control module 4, communication module 5, data storage module 6, power supply module 7, power grid 8, and data sampling module 9 are shown. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] like Figures 1-7As shown, a single-phase multi-functional rail-mounted energy meter based on high-speed data acquisition includes a main control metering MCU module 1. The main control metering MCU module 1 uses a low-power, high-performance single-phase energy metering SoC chip and is connected to a pulse output module 2. The main control metering MCU module 1 is also connected to an LCD display module 3, a button control module 4, a communication module 5, and a data storage module 6. The main control metering MCU module 1 is connected to the power grid 8 via a power supply module 7. A data sampling module 9 is installed between the main control metering MCU module 1 and the power grid 8. The main control metering MCU module 1 acquires real-time power grid parameters through the data sampling module 9 and calculates the current, voltage, power, power factor, and current and voltage harmonic content. Then, it calculates the corresponding electricity consumption and stores it in the storage chip IC6.

[0027] Specifically, the power module 7 includes a power chip IC1 and a voltage regulator IC2 connected to the power chip IC1.

[0028] Specifically, the main control metering MCU module 1 includes an MCU unit U2 using the SY7T233 model, which is equipped with a memory chip IC6. The MCU unit U2 has high-speed AD sampling capabilities. After acquiring the sampled data, it calculates instantaneous grid data, including voltage, current, and power. These parameters can be communicated and displayed on the user interface, with a user interface data refresh time of less than or equal to 100ms. Furthermore, the energy meter also supports the acquisition of current and voltage harmonic data.

[0029] Furthermore, the LCD display module 3 includes a driver chip LCD1 and a display chip IC5 connected to the driver chip LCD1. The LCD display module 3 has a backlight, and the energy meter is also equipped with touch buttons. By short-pressing or long-pressing the touch buttons, users can query the energy meter's power consumption information and parameter information, as well as set the parameter information.

[0030] Furthermore, the button control module 4 includes touch chip IC3 and touch chip IC4.

[0031] In addition, the main control metering MCU module 1 is equipped with a metering module and a rate detection module. The rate detection module has an optocoupler U3. The metering module includes total active power, forward and reverse active power metering, total reactive power, forward and reverse reactive power metering, reactive power four-quadrant metering, and demand metering. Each type of energy meter can be configured for metering methods, supporting only forward power metering, only reverse power metering, absolute value power metering, and algebraic sum power metering. The rate detection module uses an externally input rate, switching between different rates via external terminal input detection.

[0032] Meanwhile, the pulse output module 2 includes a pulse lamp LED1 and a transistor Q1 connected to the pulse lamp LED1.

[0033] As can be seen, the communication module 5 includes a communication chip U1, and the communication module 5 is equipped with communication chips JP1, JP2, and JP3.

[0034] Clearly, communication module 5 supports Modbus-RTU and DLT645-2007 protocols, and the communication parameters bit rate and parity bit can be set.

[0035] Preferably, the data sampling module 9 includes several energy meters connected in parallel with the power grid 8. The energy meters are connected to the main control metering MCU module 1 via an RS485 bus. An alarm threshold can be set. When the threshold is reached, an alarm event is generated. The alarm event is recorded in the energy meter and uploaded to the main control metering MCU module 1 via the RS485 bus. At the same time, the alarm information is displayed on the LCD display module 3.

[0036] In summary, the principle of this embodiment is as follows: the electricity meter collects data from the power grid through high-speed analog-to-digital conversion and calculates parameters such as voltage, current, and power. The main control metering MCU module 1 acquires real-time data and power parameters from the electricity meter via an RS485 bus. While acquiring power grid parameters, the electricity meter monitors and analyzes these parameters, actively reporting any abnormal values ​​to the main control metering MCU module 1, thus fulfilling its monitoring function. The meter data refresh time is less than or equal to 100ms; this rapid data refresh time facilitates the analysis and monitoring of power grid data.

[0037] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0038] Although this document frequently uses terms such as main control metering MCU module 1, pulse output module 2, LCD display module 3, button control module 4, communication module 5, data storage module 6, power supply module 7, power grid 8, and data sampling module 9, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A single-phase multi-functional rail-mounted energy meter based on high-speed data acquisition, comprising a main control metering MCU module (1), characterized in that, The main control metering MCU module (1) is connected to a pulse output module (2), and the main control metering MCU module (1) is connected to an LCD display module (3), a key control module (4), a communication module (5) and a data storage module (6). The main control metering MCU module (1) is connected to the power grid (8) through a power supply module (7), and a data sampling module (9) is provided between the main control metering MCU module (1) and the power grid (8).

2. The single-phase multi-functional rail-mounted energy meter based on high-speed data acquisition according to claim 1, characterized in that, The power module (7) includes a power chip IC1 and a voltage regulator IC2 connected to the power chip IC1.

3. The single-phase multi-functional rail-mounted energy meter based on high-speed data acquisition according to claim 1, characterized in that, The main control metering MCU module (1) includes an MCU unit U2 of model SY7T233, and the MCU unit U2 is equipped with a memory chip IC6.

4. A single-phase multi-functional rail-mounted energy meter based on high-speed data acquisition as described in claim 1, characterized in that, The LCD display module (3) includes a driver chip LCD1 and a display chip IC5 connected to the driver chip LCD1.

5. A single-phase multi-functional rail-mounted energy meter based on high-speed data acquisition as described in claim 1, characterized in that, The button control module (4) includes touch chip IC3 and touch chip IC4.

6. A single-phase multi-functional rail-mounted energy meter based on high-speed data acquisition as described in claim 1, characterized in that, The main control metering MCU module (1) is equipped with a metering module and a rate detection module, and the rate detection module has an optocoupler U3.

7. A single-phase multi-functional rail-mounted energy meter based on high-speed data acquisition as described in claim 1, characterized in that, The pulse output module (2) includes a pulse lamp LED1 and a transistor Q1 connected to the pulse lamp LED1.

8. A single-phase multi-functional rail-mounted energy meter based on high-speed data acquisition as described in claim 1, characterized in that, The communication module (5) includes a communication chip U1, and the communication module (5) is equipped with communication chips JP1, JP2 and JP3.

9. A single-phase multi-functional rail-mounted energy meter based on high-speed data acquisition as described in claim 8, characterized in that, The communication module (5) supports Modbus-RTU and DLT645-2007 protocols.

10. A single-phase multi-functional rail-mounted energy meter based on high-speed data acquisition as described in claim 1, characterized in that, The data sampling module (9) includes several energy meters connected in parallel with the power grid (8), and the energy meters are connected to the main control metering MCU module (1) via RS485 bus.

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