The invention discloses an automatic identification method of an electric power meter on RS-485 bus, wherein different protocols and communication rates are used for the following operations: firstly using broadcast address to distribute a reading meter order by a collecting apparatus; then if no response received, no electric power meter in match condition exists; if correct response is received, acquiring a meter address from a response message to be added into a meter address list of the collecting apparatus; if a messy code response which is not matched with the response format in the protocol is received, a plurality of electric power meters in match condition exist, taking AAAAAAAAAAAA as initiation meter address, and entering recursive query test; and after the test completes, converging to obtain a group of electric power meter address, protocol and communication rate list. The application of the identification method can save corresponding artificial maintaining work.

Automatic identification method of electric power meter on RS-485 bus

The invention relates to an intelligent meter searching method for a type II collector. The method comprises the following steps: electrifying to enter an intelligent meter searching process of equipment, wherein the intelligent meter searching process refers to setting abbreviated addressing wildcard characters specified in the protocol; and transmitting a meter reading command with the abbreviated addressing wildcard characters through the type II collector; analyzing the returned data, if the data can be successfully analyzed, recording the meter number and saving the meter address, if the data cannot be successfully analyzed, changing the searching conditions of the abbreviated addressing wildcard characters. According to the intelligent meter searching method for the type II collector disclosed by the invention, intelligent meter searching is realized by virtue of a rapid cycle meter searching algorithm under the condition that the cost is not increased, so that 32 electricity meters can be in cascade connection at most in the process of using the type II collector, and a corresponding relationship between the type II collector and the electricity meters is not needed to be manually maintained. Therefore, the type II collector can be modularly used when only one electricity meter is connected, and the method has meter-searching high efficiency and usability. The invention also provides an intelligent meter searching system for the type II collector.

Intelligent meter searching method and system for type II collector

The invention relates to an automatic meter searching method for an intelligent power grid, which comprises the following steps of: acquiring and storing addresses of electric meters of all residents; starting to search and initializing meter searching information; replacing all the addresses with a wildcard character A to carry out meter reading and judging whether data is received on a transmission bus or not; and sequentially sending out meter reading commands and sequentially determining the addresses of the electric energy meters from the lowest level to the highest level. The automatic meter searching method for the intelligent power grid has the advantages that the accuracy of the information of the electric meters of the residents can be ensured; the automatic meter searching method for the intelligent power grid is convenient and rapid; and additional cost does not need to be added.

Automatic meter searching method for intelligent power grid

Voltmeter address retrieval method, related equipment and system

The invention provides an automatic energy meter address searching method The automatic energy meter address searching method comprises the steps that firstly, full-A address meter reading frames are sent for conducting broadcast meter reading, then, whether an energy meter exists or not and whether a plurality of energy meters exist or not are judged according to returned data frames, furthermore, energy meter abbreviated address searching is used for conducting multiple times of meter searching, therefore, addresses of the real energy meters which are searched out in the meter searching process are stored and then the addresses of all the energy meters are obtained By means of the automatic energy meter address searching method, automatic energy meter address searching which is complete in meter searching and high in efficiency is realized, great convenience is brought to debugging and maintenance of electricity consumption information networks, and the meter searching efficiency is greatly improved

Automatic energy meter address searching method

The invention discloses a method for automatically searching an electric meter address below a collector, comprising the following steps: 1, a concentrator sends a wildcard address to the collector and excites the collector to collect the data of all electric meters; 2, the collector sends the data collected in 1-3S back to the concentrator, and the concentrator analyzes the collected data, wherein the analysis process is that: (1) if no data is input, no electric meter is accessed; (2) if a complete data is received and no other data is followed, a single electric meter is accessed; (3) if the searched data is messy codes, error messages or correct message and other data is followed, a plurality of electric meters are accessed; 3, and when search shows that a plurality of electric metersare accessed, the wildcard address is replaced to repeat the step 1 and the step 2 till the address of the single electric meter is searched. The method can reduce maintenance work of an electric power information collecting system, reduces maintenance cost, and increases running effect of the collecting system.

Jin Yang

Papers

Method for automatically searching electric meter address below collector