Data transmission method for four-meter centralized reading system

Abstract

The invention discloses a data transmission method for a four-meter centralized reading system. The data transmission method for the four-meter centralized reading system comprises the following steps of collecting data of a water meter, a gas meter and a heat meter, distributing a storage address Vc1 of the data of the water meter, the gas meter and the heat meter according to a CJT188 protocol, wherein the storage address Vc1 of the data of the water meter, the gas meter and the heat meter is a 7-byte BCD (Binary-Coded Decimal) code address; converting the storage address Vc1 of the data of the water meter, the gas meter and the heat meter into a hexadecimal 6-byte address Vc2; carrying out transmission processing on the converted storage address Vc2 of the data of the water meter, the gas meter and the heat meter according to a DLT645 protocol. Through collecting and storing the data of the water meter, the gas meter and the heat meter according to the original CJT188 protocol, and then converting the storage address of the data into the hexadecimal 6-byte address, and adapting the 6-byte address to a 6-byte storage address of data of an electrodynamometer under the DLT645 protocol, the data of the water meter, the gas meter and the heat meter can be likewise subjected to the transmission processing through the DLT645 protocol; therefore, the uniform data transmission of the four-meter centralized reading system is realized.

Description

technical field [0001] The invention relates to the technical field of meter reading systems, in particular to a data transmission method for a four-meter centralized reading system. Background technique [0002] At present, the power grid system is relatively sound and standardized. All domestic power meters can transmit meter data to a unified server according to the corresponding specifications, but water and gas heat meter manufacturers have their own methods, and there is no unified master station specification. Therefore, the data of the water vapor heat meter has not been able to perform automatic meter reading in a unified manner. The main idea of ​​the current four-meter centralized reading system is to automatically collect the data of water meters, gas meters, and heat meters through the acquisition system of the power grid. The data transmission protocol adopted by water meters, gas meters, and heat meters is the CJT188 protocol. , while the data transmission pr...

AI Technical Summary

Problems solved by technology

[0002] At present, the power grid system is relatively sound and standardized. All domestic power meters can transmit meter data to a unified server according to the corresponding specifications, but water and gas heat meter manufacturers have their own methods, and there is no unified master station specification. Therefore, the data of the water vapor heat meter has not been able to perform automatic meter reading in a unified manner.

The main idea of ​​the current four-meter centralized reading system is to automatically collect the data of water meters, gas meters, and heat meters through the acquisition system of the power grid. The data transmission protocol adopted by water meters, gas meters, and heat meters is the CJT188 protocol. , while the data transmission protocol of the power meter in the power grid is the DLT645 protocol. In the implementation process, it is necessary to convert the CJT188 protocol implemented by the water and gas heat meter into the DLT645 protocol implemented by the power meter. The main problems encountered in this process are: The address of the data transmission table defined by the CJT188 protocol is a 7-byte BCD code, while the address of the data transmission table in the DLT645 protocol is a 6-byte BCD code, and the data of the water and gas heat meter cannot be transmitted through the DLT645 protocol