Meter reading system and method thereof

Abstract

The invention discloses a meter reading system which comprises a power line wideband carrier communication unit, a wireless communication unit, a clock unit, a control unit and a storage unit. The power line wideband carrier communication unit is used for transceiving a meter reading signal transmitted in a power line carrier way; the wireless communication unit is used for transceiving a meter reading signal transmitted in a wireless communication way; and the control unit is used for detecting a channel condition, controlling the meter reading system to automatically switch channels between the power line wideband carrier communication and the wireless communication according to a detection result, carrying out automatic networking after switching the channels and carrying out format conversion on the meter reading signals received from the power line wideband carrier communication unit and the wireless communication unit to generate electric meter data. The meter reading system combines the wireless communication way with the power line communication way by utilizing the characteristics of high reliability of the wideband carrier communication, high data transmission rate, large data capacity, bidirectional transmission and the like, so that the field construction work such as reading an electric meter, arranging wires and the like is simple, convenient and flexible.

Description

technical field [0001] The invention relates to a meter reading technology, in particular to a meter reading system and a method thereof which combine wireless communication and power line carrier transmission modes of power line carrier and wireless communication. Background technique [0002] In recent years, with the development of the national urban and rural power grid transformation and implementation of one household, one meter project, the number of single-phase watt-hour meters installed has increased sharply. The biggest problem that has been brought about is that the manual meter reading mode that the Ministry of Electric Power has followed for a long time can no longer adapt. This change gave birth to the remote meter reading mode. Remote meter reading methods generally include RS485 meter reading methods, infrared meter reading methods, low-voltage narrowband carrier meter reading methods, low-voltage broadband carrier meter reading methods, and short-distance w...

AI Technical Summary

Problems solved by technology

However, the current carrier wave collectors have defects in different degrees in practical applications, such as the "Intelligent Carrier Meter Reading Device" with the patent No. Carrier technology realizes the reading and transmission of electricity from electric meters. Their communication methods are relatively simple, their anti-interference ability is poor, and they have high requirements for the transmission quality of power lines. Moreover, their products are generally only available in small areas with less grid interference. Certain practical value, when used in a large area, due to the large interference of the power grid, they will have a low copying success rate, the signal is drowned by noise, and the power cannot be copied, etc.

However, in the case where the distance is short but there are many large solid obstacles in the space, and the wireless signal is difficult to transmit, using a wireless communication network for signal transmission will have a greater impact on the reliability of communication

Images