Single-phase carrier intelligent electric energy meter

Abstract

The utility model relates to the field of intelligent electric energy meters, in particular to a single-phase carrier intelligent electric energy meter, which comprises a microcontroller, and further comprises a metering module, an electric leakage detection module, an electric leakage protection module, a human body induction module, a communication module, a display module, a storage module and a power supply module which are electrically connected with the microcontroller, the electric leakage detection module comprises a zero sequence current transformer and an RS485 interface, the electric leakage protection module comprises a circuit breaker and an indicating lamp, the human body induction module comprises an infrared emitter, an infrared receiver, a photoresistor and an illuminating lamp, and the metering module comprises a metering chip, an ADC analog-to-digital converter, a current transformer and a voltage transformer. And when the electric leakage risk is monitored, the circuit is cut off, so that electric shock accidents are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent electric energy meters, in particular to a single-phase carrier intelligent electric energy meter. Background Art

[0002] Single-phase carrier smart energy meter is a smart energy meter that can transmit data through power lines. This type of energy meter is usually used in homes and small commercial places. It can monitor and record the user's electricity consumption in real time and transmit the data to a remote data processing center for energy management and billing.

[0003] However, in actual use, some equipment may have special conditions or faults that require on-site inspection and processing, requiring meter readers to go to the site for on-site inspection to confirm the equipment status and obtain more detailed information. Combining remote meter reading with on-site meter reading, by reading the equipment readings on-site and comparing them with remote meter reading data, the accuracy of the data can be verified and potential problems can be discovered, thereby improving the accuracy and reliability of electricity metering.

[0004] When reading and inspecting single-phase carrier smart energy meters on site, there may be a risk of leakage due to line aging and insulation damage because the energy meter is exposed to the external environment for a long time. Therefore, a single-phase carrier smart energy meter with leakage protection function and easy to operate by staff is needed. Utility Model Content

[0005] The utility model provides a single-phase carrier intelligent electric energy meter.

[0006] The technical solution of this utility model is as follows:

[0007] A single-phase carrier intelligent electric energy meter includes a microcontroller, and is characterized in that it also includes a metering module, a leakage detection module, a leakage protection module, a human body sensing module, a communication module, a display module, a storage module and a power supply module electrically connected to the microcontroller.

[0008] The leakage detection module includes a zero-sequence current transformer and an RS485 interface, both of which are electrically connected to the microcontroller.

[0009] The leakage protection module includes a circuit breaker and an indicator light, both of which are electrically connected to the microcontroller.

[0010] The human body sensing module includes an infrared transmitter, an infrared receiver, a photoresistor and a lighting lamp, all of which are electrically connected to a microcontroller.

[0011] The metering module includes a metering chip, an ADC analog-to-digital converter, a current transformer and a voltage transformer, all of which are electrically connected to a microcontroller.

[0012] Specifically, the circuit breaker is an electromagnetic circuit breaker.

[0013] Furthermore, it also includes a temperature sensor and a humidity sensor, both of which are electrically connected to the microcontroller.

[0014] Specifically, the temperature sensor is a thermistor temperature sensor, and the humidity sensor is a capacitive humidity sensor.

[0015] Furthermore, it also includes an alarm module electrically connected to the microcontroller, and the alarm module includes a buzzer and an LED indicator light.

[0016] Preferably, the power module includes a lithium battery and a power interface, both of which are electrically connected to the microcontroller.

[0017] Preferably, the communication module is provided with a Bluetooth communication interface, a Wi-Fi communication interface, an Ethernet communication interface and a serial communication interface, all of which are electrically connected to the microcontroller.

[0018] Preferably, the display module is an LCD liquid crystal display screen.

[0019] The beneficial effects of the utility model are:

[0020] (1) The utility model is a single-phase carrier intelligent energy meter, in which the leakage detection module and the leakage protection module cooperate with each other, which can timely monitor the leakage risk and cut off the leakage circuit to prevent the occurrence of electric shock accidents, and can also effectively reduce the risk of electrical fire caused by leakage.

[0021] (2) The human body sensing module senses the human body based on infrared light and turns on the lighting when the ambient light is insufficient, making it easier for operators to read meters and conduct inspections on site while reducing energy waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not considered to be limiting of the present invention.

[0023] In the attached picture:

[0024] Figure 1 It is a structural schematic diagram of a single-phase carrier intelligent electric energy meter in an embodiment. DETAILED DESCRIPTION

[0025] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0026] Example

[0027] This embodiment provides a single-phase carrier intelligent energy meter. Figure 1, including a microcontroller, characterized in that it also includes a metering module, a leakage detection module, a leakage protection module, a human body sensing module, a communication module, a display module, a storage module and a power module electrically connected to the microcontroller,

[0028] The leakage detection module includes a zero-sequence current transformer and an RS485 interface, both of which are electrically connected to the microcontroller.

[0029] The leakage protection module includes a circuit breaker and an indicator light, both of which are electrically connected to the microcontroller.

[0030] The human body sensing module includes an infrared transmitter, an infrared receiver, a photoresistor and a lighting lamp, all of which are electrically connected to a microcontroller.

[0031] The metering module includes a metering chip, an ADC analog-to-digital converter, a current transformer and a voltage transformer, all of which are electrically connected to a microcontroller.

[0032] Specifically, in the present invention, the microcontroller is the core of the single-phase carrier intelligent energy meter and is responsible for controlling and coordinating the work of each module. The microcontroller receives data from other modules and sends corresponding control instructions.

[0033] As one of the core modules of the phase carrier intelligent energy meter, the metering module is used to measure and record the consumption of electric energy. The metering module includes a metering chip, an ADC analog-to-digital converter, a current transformer and a voltage transformer, all of which are electrically connected to the microcontroller. The metering chip is the core component of the metering module and affects the accuracy of electric energy measurement. The current transformer is used to collect the current signal in the circuit, and the voltage transformer is used to collect the voltage signal in the circuit. The collected current signal and voltage signal are transmitted to the ADC analog-to-digital converter to be converted into digital signals, and the converted digital signals are transmitted to the metering chip.

[0034] The leakage detection module is used to monitor the leakage in the circuit in real time and detect leakage risks in time. The leakage detection module includes a zero-sequence current transformer and an RS485 interface. The zero-sequence current transformer is used to detect the zero-sequence current in the circuit, that is, the vector sum of the three-phase current. Under normal circumstances, the zero-sequence current is close to zero. When leakage occurs, the zero-sequence current will increase. The leakage detection module transmits the real-time detected current data to the remote monitoring center through the RS485 interface and the communication module.

[0035] The leakage protection module is used to quickly cut off the circuit under the instruction of the microcontroller after detecting leakage to prevent contact accidents. The leakage protection module includes a circuit breaker and an indicator light. The circuit breaker is an electromagnetic circuit breaker, which includes an electromagnetic release, an arc extinguishing chamber, and a manual operating mechanism. When the leakage detection module detects leakage, the remote monitoring center sends a signal command. At this time, the indicator light comes on to remind the operator that there is a danger of leakage. The electromagnetic release activates the tripping mechanism through the action of the electromagnet to cut off the circuit. The arc extinguishing chamber is used to extinguish the arc generated when the circuit is disconnected to prevent the arc from causing damage to equipment and personnel. The manual operating mechanism is used to manually realize the opening and closing operations of the electromagnetic circuit breaker. The specific structure can be selected as a handle and a button according to the actual situation.

[0036] The human body sensing module is used to sense the presence of human body and provide lighting. The human body sensing module includes an infrared transmitter, an infrared receiver, a photoresistor and a lighting lamp, all of which are electrically connected to the microcontroller. The infrared transmitter emits infrared light, and the infrared receiver receives the infrared light reflected by the human body entering the detection area, and transmits the reflected infrared light signal to the microcontroller; the photoresistor is used to detect the ambient light intensity, and transmits the light intensity data to the microcontroller at the same time. The microcontroller transmits the real-time received reflected infrared light data and light intensity data to the remote monitoring center through the communication module. The remote monitoring center sends a control signal to the microcontroller to turn on the lighting lamp, which is convenient for the on-site meter reading and inspection staff to operate.

[0037] It also includes a temperature sensor and a humidity sensor, both of which are electrically connected to the microcontroller. The temperature sensor is a thermistor temperature sensor, which is used to detect the temperature of the environment and transmit the detected temperature data to the microcontroller. The humidity sensor is a capacitive humidity sensor, which is used to detect the humidity of the environment and transmit the detected humidity data to the microcontroller. A single-phase carrier smart energy meter in this embodiment has an operating limit temperature range of -40°C to 70°C and an annual average humidity of less than 75%.

[0038] The alarm module is electrically connected to the microcontroller, and includes a buzzer and an LED indicator light. When the temperature is too high, the humidity is too high, or a leakage occurs, the buzzer will sound and the LED indicator light will flash.

[0039] The power module includes a lithium battery and a power interface, both of which are electrically connected to the microcontroller. The power module provides a stable working power supply for the energy meter to ensure the normal operation of each module, wherein the power interface can be a USB interface or a DC interface for connecting to an external power supply.

[0040] The communication module is used to upload the electric energy data, leakage information, temperature data and humidity data collected by the single-phase carrier smart energy meter to the remote monitoring center to realize remote management and monitoring of the data. The communication module is provided with a Bluetooth communication interface, a Wi-Fi communication interface, an Ethernet communication interface and a serial communication interface, all of which are electrically connected to the microcontroller. The Bluetooth communication interface is used for short-distance communication between the single-phase carrier smart energy meter and other devices, and the Wi-Fi communication interface, the Ethernet communication interface and the serial communication interface are used for remote data transmission of the single-phase carrier smart energy meter.

[0041] The display module is an LCD display screen, which is used to display various parameters and status information of the single-phase carrier smart energy meter in real time.

[0042] The storage module is used to store the electric energy data and configuration parameters of the single-phase carrier smart electric energy meter, which facilitates data backup and query.

[0043] The utility model fully considers the safety and convenience issues in actual meter reading and other operation processes of the single-phase carrier intelligent electric energy meter, and provides an intelligent and humanized single-phase carrier intelligent electric energy meter.

Claims

1. A single-phase carrier intelligent electric energy meter, comprising a microcontroller, characterized in that: It also includes a metering module, a leakage detection module, a leakage protection module, a human body sensing module, a communication module, a display module, a storage module and a power module which are electrically connected to the microcontroller. The leakage detection module includes a zero-sequence current transformer and an RS485 interface, both of which are electrically connected to the microcontroller. The leakage protection module includes a circuit breaker and an indicator light, both of which are electrically connected to the microcontroller. The human body sensing module includes an infrared transmitter, an infrared receiver, a photoresistor and a lighting lamp, all of which are electrically connected to a microcontroller. The metering module includes a metering chip, an ADC analog-to-digital converter, a current transformer and a voltage transformer, all of which are electrically connected to a microcontroller.

2. A single-phase carrier intelligent electric energy meter according to claim 1, characterized in that: The circuit breaker is an electromagnetic circuit breaker.

3. A single-phase carrier intelligent electric energy meter according to claim 1, characterized in that: It also includes a temperature sensor and a humidity sensor, both of which are electrically connected to the microcontroller.

4. A single-phase carrier intelligent electric energy meter according to claim 3, characterized in that: The temperature sensor is a thermistor temperature sensor, and the humidity sensor is a capacitive humidity sensor.

5. The single-phase carrier intelligent electric energy meter according to claim 1, characterized in that: It also includes an alarm module electrically connected to the microcontroller, and the alarm module includes a buzzer and an LED indicator light.

6. A single-phase carrier intelligent electric energy meter according to claim 1, characterized in that: The power module includes a lithium battery and a power interface, both of which are electrically connected to the microcontroller.

7. A single-phase carrier intelligent electric energy meter according to claim 1, characterized in that: The communication module is provided with a Bluetooth communication interface, a Wi-Fi communication interface, an Ethernet communication interface and a serial communication interface, all of which are electrically connected to the microcontroller.

8. The single-phase carrier intelligent electric energy meter according to claim 1, characterized in that: The display module is an LCD liquid crystal display screen.

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