CN205404676U - Electricity inspection terminal of special electric energy measurement of three -phase - Google Patents

Abstract

The utility model relates to a power inspection terminal for three-phase special electric energy metering, which is characterized in that it includes a temperature sensor, a data memory, a keyboard, a liquid crystal display, a host computer, a microprocessor, a real-time clock, and a three-phase special electric energy metering module, Battery voltage acquisition module and GPRS module.

Description

A power inspection terminal for three-phase special electric energy metering

technical field

The utility model belongs to the field of electricity inspection, in particular to an electricity inspection terminal for three-phase special electric energy measurement.

Background technique

With the development of modern society and economy, all walks of life have higher and higher demand and dependence on power supply. How to ensure the safety, continuity and stability of power supply is particularly important for power supply enterprises. Due to the natural and special physical properties of power production, supply, and use in an instant, as a power supply enterprise, in addition to ensuring the normal operation of its own power facilities and electrical equipment, it must also strengthen the safety and technical management of power users to prevent power users from internally Faults cause adverse effects on the grid.

At present, electricity inspectors mainly use traditional manual on-site inspections for electricity safety management of electricity customers. This inspection method lacks real-time performance and low work efficiency. It is impossible to check the user's equipment safety status, electrical operation status, Electricity usage and electrical work behavior, etc. Once the user has abnormal electricity consumption, the electricity inspection personnel cannot grasp and eliminate it in real time, which will affect the safe and stable operation of the power system and the normal electricity consumption of users. This traditional electricity inspection operation organization mode can no longer adapt to the current management and management of electricity demand customer service.

Utility model content

Aiming at the operation mode of electrical equipment in the power supply and distribution system of high-voltage power customers, relay protection and operation parameter sampling of automatic devices, real-time data monitoring, wireless remote transmission, etc., combined with the actual needs of power inspection work, the utility model provides a The power inspection terminal for three-phase special electric energy metering is characterized in that it includes a temperature sensor, data memory, keyboard, liquid crystal display, upper computer, microprocessor, real-time clock, three-phase special electric energy metering module, battery voltage acquisition module and GPRS module,

The microprocessor is connected with the handshake signal port SIG, the reset control port RESET and the control port V1P of the three-phase special electric energy metering module, outputs control signals to the three-phase special electric energy metering module, and reads the metering parameter register in the three-phase special electric energy metering module The host computer communicates with the microprocessor through the port UART2, modifies the meter calibration register parameters and terminal time in the three-phase special electric energy metering module, and performs operations such as restoring factory settings and reading and writing data memory register values; the microprocessor communicates through the port UART1 communicates with the GPRS module, uploads real-time data and fault diagnosis data to the server, and receives commands issued by the server and users in the form of SMS; the microprocessor is connected to the real-time clock through the port XICLKIN to obtain timing signals; the microprocessor is connected to the real-time clock through the port GPIO The temperature sensor is connected; the microprocessor is connected to the data memory through the port USB, and the data memory stores real-time power parameters and fault diagnosis data; the battery voltage acquisition module sends the battery current signal to the ADC converter inside the microprocessor for real-time sampling; the microprocessor is connected with keyboard and LCD display.

The three-phase special electric energy metering module includes three-phase special electric energy metering chip U1, resistor R246, resistor R247, capacitor C216, capacitor C217, the microprocessor is single-chip microcomputer U2, and the port RESET of three-phase special electric energy metering chip U1 communicates with single-chip microcomputer U2 through resistor R246 The port P5.1 of the three-phase dedicated electric energy metering chip U1 is connected to the port P5.2 of the single-chip microcomputer U2 through the resistor R247, and the port V1P of the three-phase special electric energy metering chip U1 is connected to the port P5.7 of the single-chip microcomputer U2.

Beneficial effects of the utility model: (1) Accurately grasp the operating conditions of electric facilities and electrical equipment, maximize the working potential of electricity inspectors, and reduce the labor intensity of electricity inspectors; (2) due to the enhanced It improves the equipment management of power facilities and electrical equipment, and reduces the probability of affecting the safe operation of the system due to faulty operation of power facilities and electrical equipment; Personnel call the police, which speeds up troubleshooting and recovery of normal power consumption;

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a circuit diagram of a three-phase special electric energy metering module of the present invention;

Among them, 1: microprocessor; 2: three-phase special electric energy metering module; 3: keyboard; 4: real-time clock; 5: temperature sensor; 6: data memory; 7: liquid crystal display; 8: host computer; 9: battery voltage Acquisition module; 10: GPRS module.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

The embodiment of the utility model is shown in Fig. 1 with reference to.

A power consumption inspection terminal for three-phase special electric energy metering, which includes a temperature sensor, a data memory, a keyboard, a liquid crystal display, a host computer, a microprocessor, a real-time clock, a three-phase special electric energy metering module, a storage battery voltage acquisition module, and a GPRS module ,

The microprocessor is connected with the handshake signal port SIG, the reset control port RESET and the control port V1P of the three-phase special electric energy metering module, outputs control signals to the three-phase special electric energy metering module, and reads the metering parameter register in the three-phase special electric energy metering module Then carry out relevant data processing and complete the data collection of electrical parameters; the upper computer communicates with the microprocessor through the port UART2, modifies the calibration register parameters and terminal time in the three-phase special electric energy metering module, and restores the factory settings, reads and writes The operation of the data memory register value; the microprocessor communicates with the GPRS module through the port UART1, uploads the real-time data and fault diagnosis data to the server, and receives the commands issued by the server and the user in the form of SMS; the microprocessor connects with the real-time clock through the port XICLKIN, To obtain timing signals; the microprocessor is connected to the temperature sensor through the port GPIO; the microprocessor is connected to the data memory through the port USB, and the data memory stores real-time power parameters and fault diagnosis data; the battery voltage acquisition module sends the battery current signal into the microprocessor The ADC converter performs real-time sampling; the microprocessor is connected with a keyboard and a liquid crystal display to realize the functions of moving up, down, confirming and returning the display page, which is convenient for users to query on-site information. The liquid crystal display is used to display current information query and historical information query, exception information query and system information query.

The three-phase special electric energy metering module includes three-phase special electric energy metering chip U1, resistor R246, resistor R247, capacitor C216, capacitor C217, the microprocessor is single-chip microcomputer U2, and the port RESET of three-phase special electric energy metering chip U1 communicates with single-chip microcomputer U2 through resistor R246 The port P5.1 of the three-phase dedicated electric energy metering chip U1 is connected to the port P5.2 of the single-chip microcomputer U2 through the resistor R247, and the port V1P of the three-phase special electric energy metering chip U1 is connected to the port P5.7 of the single-chip microcomputer U2.

Among them, the three-phase dedicated electric energy metering chip U1 is a digital-analog hybrid circuit chip ATT7022A;

Among them, MCU U2 adopts 16-bit RxSC structure, and is equipped with: 8Mhz high-speed crystal oscillator, single-slope A/D converter, 16-bit timer, two-channel serial communication interface circuit, and hardware multiplier.

The above-mentioned embodiment is only an embodiment of the present utility model, but should not be construed as limiting the scope of the present utility model. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the utility model, and these all belong to the protection scope of the utility model.

Claims (3)

1. A power consumption inspection terminal for three-phase special electric energy metering, characterized in that it includes a temperature sensor, data memory, keyboard, liquid crystal display, upper computer, microprocessor, real-time clock, three-phase special electric energy metering module, battery voltage Acquisition module and GPRS module, The microprocessor is connected with the handshake signal port SIG, the reset control port RESET and the control port V1P of the three-phase special electric energy metering module, outputs control signals to the three-phase special electric energy metering module, and reads the metering parameter register in the three-phase special electric energy metering module The host computer communicates with the microprocessor through the port UART2, modifies the meter calibration register parameters and terminal time in the three-phase special electric energy metering module, and performs operations such as restoring factory settings and reading and writing data memory register values; the microprocessor communicates through the port UART1 communicates with the GPRS module, uploads real-time data and fault diagnosis data to the server, and receives commands issued by the server and users in the form of SMS; the microprocessor is connected to the real-time clock through the port XICLKIN to obtain timing signals; the microprocessor is connected to the real-time clock through the port GPIO The temperature sensor is connected; the microprocessor is connected to the data memory through the port USB, and the data memory stores real-time power parameters and fault diagnosis data; the battery voltage acquisition module sends the battery current signal to the ADC converter inside the microprocessor for real-time sampling; the microprocessor is connected with Keyboard and LCD display; The three-phase special electric energy metering module includes three-phase special electric energy metering chip U1, resistor R246, resistor R247, capacitor C216, capacitor C217, the microprocessor is single-chip microcomputer U2, and the port RESET of three-phase special electric energy metering chip U1 communicates with single-chip microcomputer U2 through resistor R246 The port P5.1 of the three-phase dedicated electric energy metering chip U1 is connected to the port P5.2 of the single-chip microcomputer U2 through the resistor R247, and the port V1P of the three-phase special electric energy metering chip U1 is connected to the port P5.7 of the single-chip microcomputer U2. 2 . The power inspection terminal for three-phase dedicated electric energy metering according to claim 1 , wherein, the special three-phase electric energy metering chip U1 is a digital-analog hybrid circuit chip ATT7022A. 3. A power inspection terminal for three-phase special electric energy metering according to claim 1, characterized in that: the single-chip microcomputer U2 adopts a 16-bit RxSC structure, and is equipped with: 8Mhz high-speed crystal oscillator, single hypotenuse A/D converter, 16-bit timer, two-channel serial communication interface circuit, hardware multiplier.