Internet of things telephone capable of remotely reading meter

Abstract

The invention provides an Internet of things telephone capable of remotely reading a meter, which belongs to the technical field of telecom. A wireless communication module and a voice module are arranged, a telephone line is utilized as a signal transmission antenna, data on a household electricity meter, a household gas meter and a household water meter can be automatically read in a household based on the conventional telephone by utilizing a short-range wireless communication technology, the read data is transmitted to a centralized controller module in the Internet of things telephone for processing, and information is fed back to an active querier in form of a voice information by a conventional public telephone network. The Internet of things telephone combines the short-range wireless communication module and a conventional household telephone to realize remote meter reading and remote control. Due to the extremely high popularizing rate of the telephone, the short-range wireless communication technology is flexible and convenient to distribute in the household.

Description

technical field [0001] The invention relates to an Internet of Things phone that can be used for remote meter reading, and belongs to the technical field of telecommunications. Background technique [0002] The rapid development of computer technology, communication and microelectronic technology has promoted the wide application of Internet technology, radio frequency tag (RFID) technology, global positioning system (GPS) and digital earth technology, as well as the research of wireless network and wireless sensor network (WSN). The rapid development and the huge economic and social benefits generated by Internet applications have deepened people's understanding of the role of informatization. But now the collection of information about human society, culture, technology and economy on the Internet must be input and managed by people. In order to meet the needs of economic globalization, people imagine that if RFID technology, WSN technology, GPS technology, digital earth ...

AI Technical Summary

Problems solved by technology

[0004]1) Realize remote meter reading through power carrier communication. This communication method does not need to invest in laying communication lines, which can save capital investment and has a small amount of maintenance. Especially in recent years, the successful application of spread spectrum communication technology has made low-voltage power carrier communication begin to be used in remote wireless automatic meter reading systems, but the current power carrier communication has obvious shortcomings: mainly manifested in high noise, low impedance Large loss, large fluctuation, susceptible to external interference

In some low-voltage distribution networks in my country, the load changes greatly and lacks regularity, and various interferences are very serious. The application of spread spectrum communication technology to automatic meter reading systems has not achieved good results in my country at present.

[0005]2) Realize remote electric meter reading through RS485 wired communication network. EIA RS485 is a standardized CCITT V.11 / X.27 compatible balanced electrical characteristic standard. Data transmission is realized by transmitting differential signals on a pair of balanced interconnection cables and making signal judgments at the receiving end. This network has strong anti-interference ability, long transmission distance (1200M), and high data rate (100kb / s). However, because it is a wired network, it needs to lay special transmission equipment, which requires additional investment costs. In addition, it uses twisted-pair wires as the network bus, which supports up to 128 nodes, which cannot meet the needs of some users with more network nodes. , it is mainly used in a small number of high-end living quarters in China

However, due to the high price of the GPRS terminal installed on each meter, the domestic price is between 600-1500 yuan, and the power consumption of the GPRS terminal is relatively large. Since the GPRS wireless remote automatic meter reading system is put into use, meter users have It is necessary to pay a certain fee to the GPRS operator according to the data flow. In terms of its installation, maintenance and use costs, it exceeds the manual meter reading to some extent. Therefore, it has not been widely used.

At present, the main bottleneck of the remote automatic meter reading system that has not been widely applied to the meter reading and charging of power supply enterprises is the communication scheme at the bottom of the system—that is, the process of transmitting the data of each meter to the processing terminal

Images