CN112365699A

CN112365699A - Meter reading method for solving problem of uplink communication timeout of water-gas-heat meter converter

Info

Publication number: CN112365699A
Application number: CN202011015275.4A
Authority: CN
Inventors: 石潇龙; 陈维广; 徐军然; 朱文亚
Original assignee: Qingdao Topscomm Communication Co Ltd
Current assignee: Qingdao Topscomm Communication Co Ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-02-12
Anticipated expiration: 2040-09-24
Also published as: CN112365699B

Abstract

The invention discloses a meter reading method for solving the problem of overtime of uplink communication of a water-gas-heat meter converter, relates to the field of data information acquisition, is used for matching with an uplink acquisition terminal to perfect the interactive flow of the terminal and the converter, and under the condition of meeting the requirements of carrier wave and 485 serial port communication waiting time specified in DLT-645-2007-multifunctional electric energy meter communication protocol, the converter records an interactive command issued by the uplink acquisition terminal, and solves the problem of time sequence matching with partial meters and partial commands with longer interactive response time through time sequence staggering, so that the converter and the existing electric power information acquisition system are in seamless butt joint, and the stability of data acquisition and control of water, electricity, gas and heat meters is ensured.

Description

Meter reading method for solving problem of uplink communication timeout of water-gas-heat meter converter

Technical Field

The invention belongs to the field of data information acquisition, and particularly relates to a meter reading method for solving the problem of uplink communication timeout of a converter of a water-gas calorimeter.

Background

The four meters are key projects promoted by national grid companies in recent years, and on the basis of automatic acquisition of the existing electric energy meters, information acquisition of three meters, namely water, gas and heat is added, so that integrated remote reading and control of the four meters are realized, and a solid step is taken for comprehensively constructing smart cities. However, the original power information acquisition is standardized and fixed, and in the meter data acquisition application process, it is found that the reply time of part of meters and part of commands is long and exceeds the timeout waiting time of power acquisition, and the reply frame of the meter cannot be reported to the terminal acquisition equipment within the specified timeout time, so that the matching problem of the power communication time sequence and the meter interaction time sequence is caused, and the success rate and the efficiency of information acquisition are further reduced.

Therefore, the invention provides a reasonable and effective solution to the above problems.

Disclosure of Invention

Aiming at the problems and the defects in the application, the invention aims to provide a meter reading method for solving the problem of uplink communication timeout of a water-gas-heat meter converter, shortens the response time of partial meters and partial commands at present, solves the problem of time sequence matching of the meters and an electric power acquisition system, and improves the success rate and the efficiency of information acquisition.

In order to achieve the aim, the invention provides a meter reading method for solving the problem of uplink communication timeout of a water-gas-heat meter converter, which comprises the steps of carrying out iterative recording on an interactive command issued by uplink acquisition terminal equipment; overtime waiting in the task execution process, and judging and processing the same command received for multiple times; after receiving a new command, interrupting the current task; and reporting the reply frame immediately and reporting the reply frame for the second time.

The iterative recording enables the converter to record the interactive command issued by the uplink acquisition terminal equipment, and when a new interactive command is issued to the converter, the new interactive command can replace the previously recorded command.

The overtime waiting can ensure that the converter gives a waiting time longer than the overtime time of the uplink carrier or the Rs485 serial port to the task execution serial port when executing the current task, and if the converter receives a command frame which is sent by the uplink acquisition terminal device and is the same as the recording frame again in the task waiting time, the converter does not execute the command, thereby ensuring the integrity of the execution of the current task.

And in the process of executing the current task, when a new command frame different from the recording frame is received by the converter, interrupting the task which is currently executed, and further executing the new task.

After the converter receives the meter reply frame, whether the uplink carrier or the Rs485 serial port is overtime or not, the converter immediately replies to the serial port of the command frame and records the reply frame, if the command frame which is the same as the record frame is received again after the reply, the recorded reply frame is directly reported without re-executing the task, and the recorded reply frame is deleted after the secondary reply.

The invention has the beneficial effects that:

1. the converter can be directly connected to the existing power information acquisition system of the national grid company, and the system does not need to be modified, so that the operation is simple and convenient.

2. The method supports real-time interaction of meters or commands with longer interaction time, adopts staggered execution on time sequence, and effectively solves the problem that the communication overtime of a single-frame command cannot be reported normally.

Drawings

Fig. 1 is a connection diagram of a converter and an uplink acquisition terminal device of the meter reading method for solving the problem of uplink communication timeout of the converter of the water-gas heat meter.

FIG. 2 is a flow chart of a meter reading method for solving the problem of uplink communication timeout of a converter of a water-gas heat meter according to the invention.

Detailed Description

The invention is further described in detail below with reference to the accompanying drawings and examples.

As shown in fig. 1, the converter and the uplink acquisition terminal device communicate with each other through a carrier or Rs485 serial port, and according to the specification of DLT _645_2007_ multifunctional electric energy meter communication protocol, the carrier serial port timeout time is 500ms, and the Rs485 serial port timeout time is 3 s. The converter downlink realizes interaction with the meter through three interfaces of Lora, Rs485 and M-Bus, and partial commands cannot be completed within the communication timeout time specified by the uplink, so that communication failure is caused.

As shown in fig. 2, after receiving the real-time interactive command issued from the uplink acquisition terminal device, the converter determines whether the command is the same as the recorded command (the converter only supports recording one command frame at the same time), and the current network router issues the same command frame again after the command frame is overtime, which also provides a prerequisite for the effective implementation of the scheme.

If the command frame received by the converter is different from the recorded command frame, the command frame is recorded, the task currently being executed is ended, a new command frame is executed until a meter reply is received or the execution serial port is overtime, and in the serial port waiting time, if the converter receives the command frame same as the recorded frame, the command frame is not executed or replied, so that the integrity of the current task is ensured. And when the execution serial port receives the reply of the meter, processing and reporting the reply frame, and storing the reported reply message.

If the command frame received by the converter is the same as the recorded command frame, whether a task is executed currently or not needs to be judged, if the task which is being executed exists, the command frame is not responded, the current task is not interrupted, if the task is not executed, whether a stored reply frame exists or not is judged, if the reply frame exists, the command frame does not need to be executed again, the stored reply frame is directly reported, the stored reply frame is deleted after the reply, and if the reply frame does not exist, the command is issued, waited, received, processed and stored according to the execution flow.

Through the process, the mode that the odd frames are used for executing storage, the even frames are directly reported, and the command serial port is matched with the execution serial port in time sequence is adopted, so that the problem that each real-time task execution is overtime is effectively avoided, and the command interaction process after the converter is accessed into the conventional power information acquisition system is more perfect.

Claims

1. A meter reading method for solving uplink communication timeout of a water-gas-heat meter converter is characterized by comprising the following steps:

carrying out iterative recording on an interactive command issued by an uplink acquisition terminal device;

overtime waiting in the task execution process, and judging and processing the same command received for multiple times;

after receiving a new command, interrupting the current task;

and reporting the reply frame immediately and reporting the reply frame for the second time.

2. The method of claim 1, wherein the iterative recording enables the converter to record the interactive command issued by the upstream acquisition terminal device, and when a new interactive command is issued to the converter, the new interactive command replaces the previously recorded command.

3. The method for solving the problem of the timeout of the uplink communication of the water-gas-heat meter converter according to claim 1, wherein the timeout waiting enables the converter to give a waiting time longer than the timeout time of the uplink carrier or Rs485 serial port to the task execution serial port when executing the current task, and if the command frame which is sent by the uplink acquisition terminal device and is the same as the record frame is received again within the waiting time of the task, the command is not executed, so that the integrity of the execution of the current task is ensured.

4. The method as claimed in claim 1, wherein the converter interrupts a currently executed task and executes the new task when receiving a new command frame different from the recording frame during the execution of the current task.

5. The method for solving the problem of the timeout of the uplink communication of the water-gas-heat meter converter according to claim 1, wherein after receiving the meter reply frame, the converter immediately replies to the serial port of the command frame and records the reply frame no matter whether the uplink carrier or the Rs485 serial port is timeout, and if receiving the command frame which is the same as the recorded frame again after replying, the converter directly reports the recorded reply frame without re-executing the task, and deletes the recorded reply frame after the secondary reply.