CN201322987Y - Intelligent meter reading system based on Wi-Fi wireless communication technology - Google Patents

Abstract

The utility model discloses an intelligent meter reading system based on Wi-Fi wireless communication technology, which includes a Wi-Fi wireless meter reading machine and a Wi-Fi wireless meter reading terminal, and is characterized in that the Wi-Fi wireless meter reading machine includes a processing chip, LCD display screen, infrared communication, Wi-Fi wireless radio frequency module and keyboard, are connected with liquid crystal display screen, keyboard and Wi-Fi wireless radio frequency module on the corresponding function pin outside processing chip; Described Wi-Fi wireless meter reading The terminal includes a main processing chip, a communication interface and a Wi-Fi radio frequency module. The communication interface and the Wi-Fi radio frequency module are connected to the corresponding function pins outside the main processing chip, and the main processing chip is connected to an external electric energy meter through the communication interface; The data transmission between the Wi-Fi wireless meter reading machine and the Wi-Fi wireless meter reading terminal is completed through the respective Wi-Fi wireless radio frequency modules. Thus realizing fast and accurate wireless meter reading.

Description

Intelligent meter reading system based on Wi-Fi wireless communication technology

Technical field:

The utility model relates to an intelligent meter reading system, in particular to an intelligent meter reading system based on Wi-Fi wireless communication technology.

Background technique:

At present, domestic electric meters are often locked in the meter box. Manual meter reading is generally used for meter reading. Sometimes it is necessary to climb a ladder, which is often dangerous, and there will be artificial estimation and wrong copying; some use infrared meter reading, infrared meter reading Meter reading needs to be aligned with the shortcomings of the electric meter; the read data must be manually imported into the database of the Electric Power Bureau, which inevitably leads to human errors and takes a lot of time.

Invention content:

The purpose of the utility model is to provide a simple in structure, fast, accurate and convenient intelligent meter reading system based on Wi-Fi wireless communication technology in view of the above shortcomings.

The purpose of this utility model is achieved in that the described intelligent meter reading system based on Wi-Fi wireless communication technology includes a Wi-Fi wireless meter reading machine and a Wi-Fi wireless meter reading terminal. The meter reading terminal is connected to the electric energy meter through the communication interface, and its structural feature is that 1) the Wi-Fi wireless meter reading machine includes a processing chip, a liquid crystal display, a Wi-Fi wireless radio frequency module and a keyboard, and the corresponding Function pin is connected with liquid crystal display screen, keyboard and Wi-Fi wireless radio frequency module; 2) described Wi-Fi wireless meter reading terminal, comprises main processing chip, communication interface and Wi-Fi wireless radio frequency module, The corresponding function pins outside the chip are connected with a communication interface and a Wi-Fi wireless radio frequency module, and the main processing chip is connected to an external electric energy meter through the communication interface; the data transmission between the Wi-Fi wireless meter reading machine and the Wi-Fi wireless meter reading terminal It is completed through the respective Wi-Fi wireless radio frequency modules.

The purpose of this utility model can also be achieved through the following technical solutions. The intelligent meter reading system based on Wi-Fi wireless communication technology is characterized in that a USB interface and infrared communication are provided on the corresponding function pins outside the processing chip. interface. The intelligent meter reading system based on Wi-Fi wireless communication technology is characterized in that the Wi-Fi radio frequency module includes a network controller chip and a Wi-Fi radio frequency chipset, and is provided with a unique Wi-Fi wireless MAC address . The intelligent meter reading system based on Wi-Fi wireless communication technology is characterized in that the communication interface adopts RS485 communication interface.

Compared with the existing structure, the utility model has the following advantages compared with the original manual meter reading and infrared meter reading after the wireless meter reading system is put into operation:

1) The reader can read the meter within a relatively long distance, avoiding the danger of manually climbing the ladder and the shortcomings of needing to align the meter with infrared meter reading;

2) The copied data is accurate, avoiding the phenomenon of artificial estimation and wrong copying, and improving the accuracy of line loss analysis;

3) Interface with the computer management system of the Electric Power Bureau, the copied data can be directly imported into the database of the Electric Power Bureau for use, avoiding errors caused by human input, and also saving a lot of time;

4) The one-key meter reading function can read all the electric meters in the area at one time, which truly realizes the meter reading in the area;

5) Due to the fast copying speed, the data can be copied multiple times within a period of time to monitor the user's electricity consumption and draw the area's electricity consumption curve.

The performance of the system in terms of practicability is relatively outstanding, and the concept of wireless meter reading based on Wi-Fi wireless communication technology is of great significance to the implementation of meter reading work on site.

Description of drawings:

Fig. 1 is the principle diagram of the Wi-Fi wireless meter reading machine of the present invention.

Fig. 2 is a schematic diagram of the Wi-Fi wireless meter reading terminal of the present invention.

Detailed ways:

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail:

The intelligent meter reading system based on Wi-Fi wireless communication technology described in the utility model includes a Wi-Fi wireless meter reading machine and a Wi-Fi wireless meter reading terminal, and the Wi-Fi wireless meter reading terminal passes through the R485 communication interface Connected to the energy meter, each Wi-Fi wireless meter reading terminal can connect up to 32 energy meters.

As shown in Figure 1, the Wi-Fi wireless meter reading machine is composed of a boost circuit, a switch circuit, a processing chip, a liquid crystal display, a backlight boost circuit, infrared communication, a Wi-Fi wireless radio frequency module, a USB interface, keyboard etc.

The boost circuit can raise 2.4 volts to 3.3 volts and 2.4 volts to 5 volts, and it is connected to the switch circuit, which is used to control the opening or closing of the Wi-Fi wireless meter reading machine; the processing chip S3C2410 core board is adopted, and S3C2410 core board includes ARM9 processor S3C2410, SDRAM, NandFLASH, which is responsible for data processing, data interaction, storage, etc.; LCD is used to display the operation interface and meter reading data, and a 160X160 LCD can be used with a keyboard To achieve menu operation, the keyboard can use a 5X5 matrix keyboard; the backlight and boost circuit provide the required driving voltage for the LCD display; the USB interface is used to connect to the PC for data interaction; the Wi-Fi radio frequency module is equipped with a unique Wi-Fi Wireless MAC address, which includes an iChip ^TM CO2144 networking controller chip and a Marvell 88W8686 Wi-Fi radio frequency chipset, used to send and receive data through the Wi-Fi wireless module, and read short-distance Wi-Fi wireless meter reading terminals from The data obtained by the electric energy meter realizes wireless meter reading.

The Wi-Fi wireless meter reading terminal, as shown in FIG. 2 , includes a main processing chip, a communication interface, a Wi-Fi wireless radio frequency module, a power supply, and the like. The main processing chip can use PL3105. Wi-Fi wireless radio frequency module, which includes an iChip ^TM CO2144 networking controller chip and a Marvell 88W8686 Wi-Fi radio frequency chipset. The communication interface can adopt RS485 communication interface.

Step-down and rectify the mains AC 220V to obtain a 5V DC voltage power supply for the main processing chip and other modules; the main processing chip PL3105 completes data receiving, sending, and data processing; the RS485 communication interface is connected to the electric energy meter, and each Wi-Fi wireless The meter reading terminal supports a maximum of 32 electric energy meters.

Working principle, the Wi-Fi wireless meter reading machine obtains the meter reading file, sends the meter reading command to the Wi-Fi wireless meter reading terminal through the Wi-Fi wireless module, and the Wi-Fi wireless meter reading terminal receives the reading through the Wi-Fi wireless radio frequency module The meter command signal, after the Wi-Fi wireless meter reading terminal is processed by the main processing chip PL3105, sends and receives the data of the electric energy meter through the RS485 communication interface, and the electric energy meter returns the meter reading data to the Wi-Fi wireless meter reading terminal through the RS485 communication interface. After being processed by the main processing chip PL3105, the Wi-Fi wireless meter reading terminal sends it to the Wi-Fi wireless meter reading machine through the Wi-Fi wireless radio frequency module, and is stored after being processed by the S3C2410 core board processing chip, and displayed on the LCD screen. The meter reading data can be connected to a PC through the USB interface for data interaction, and can also be used for data interaction with other devices through infrared communication.

Claims (4)

1. An intelligent meter reading system based on Wi-Fi wireless communication technology, including a Wi-Fi wireless meter reading machine and a Wi-Fi wireless meter reading terminal, and the Wi-Fi wireless meter reading terminal receives electric energy through a communication interface Table, it is characterized in that: 1) described Wi-Fi wireless meter reading machine comprises processing chip, liquid crystal display, Wi-Fi wireless radio frequency module and keyboard, is connected with liquid crystal display on the external corresponding function pin of processing chip , keyboard and Wi-Fi wireless radio frequency module; 2) described Wi-Fi wireless meter reading terminal, comprises main processing chip, communication interface and Wi-Fi wireless radio frequency module, is connected on the external corresponding function pin of main processing chip There is a communication interface and a Wi-Fi wireless radio frequency module, and the main processing chip is connected to an external energy meter through the communication interface; the data transmission between the Wi-Fi wireless meter reading machine and the Wi-Fi wireless meter reading terminal is through the respective Wi-Fi wireless The RF module is complete. 2. The intelligent meter reading system based on Wi-Fi wireless communication technology according to claim 1, characterized in that a USB interface and an infrared communication interface are provided on corresponding function pins outside the processing chip. 3. The intelligent meter reading system based on Wi-Fi wireless communication technology according to claim 1 or 2, characterized in that the Wi-Fi wireless radio frequency module includes a networking controller chip and a Wi-Fi radio frequency chipset, with Unique Wi-Fi wireless MAC address. 4. The intelligent meter reading system based on Wi-Fi wireless communication technology according to claim 1 or 2, characterized in that the communication interface adopts RS485 communication interface.

Images