Method for managing power supply of passive meter reading system

Abstract

The invention relates to a method for managing the power supply of a passive remote meter reading system. The passive remote meter reading system generally consists of meter reading buses, meter reading system devices, passive intelligent instruments and meters, wherein the passive intelligent instruments and the meters are not provided with power supplies and are provided with an only electroniclabel code for identification respectively; each meter reading system device is connected with a plurality of the passive intelligent instruments and the meters; and the method comprises the following steps that: when performing meter reading tasks, the meter reading device supplies power to the passive intelligent instruments and the meters through the meter reading buses and sends information with the electronic label codes to the passive intelligent instruments and the meters simultaneously; after receiving the information, the passive intelligent instruments and the meters process the information and respond corresponding information to the meter reading device; after receiving the response information, the meter reading system device makes confirmation and sends information to notifythe passive intelligent instruments and the meters to enter a working mode with ultra-low power consumption or stop working; and the operations are repeated in turn so that each passive intelligent instrument and each meter in the passive remote meter reading system stops working in turn to achieve the effect of reducing the current consumption of the system and increasing the stability of the system.

Description

Technical field: [0001] The invention relates to a method for power supply management of a passive meter reading system, which is suitable for a passive remote meter reading system composed of passive intelligent instruments, meters and meter reading system equipment. Background technique: [0002] With the development of technology and the improvement of people's living standards, intelligent remote meter reading has become the demand of modern society. The remote meter reading system has changed the original manual meter reading mode and brought great convenience to users and management departments. The initial pulse measurement and split-line meter reading system, to the active data transmission bus type meter reading system, and to the passive data transmission bus type meter reading system have developed rapidly. [0003] The passive remote meter reading system is composed of meter reading system equipment, passive smart instruments, meters, and meter reading bus. Among...

AI Technical Summary

Problems solved by technology

[0003] The passive remote meter reading system is composed of meter reading system equipment, passive smart instruments, meters, and meter reading bus. Among them, the passive smart instruments and meters themselves do not have power supply. Only when the meter reading work is performed, the meter reading system equipment, The power supply through the meter reading bus solves the problem of long-term power supply for active smart instruments and meters, and can be widely promoted. However, since the power supply of passive smart instruments and meters is supplied by the meter reading system equipment, a meter reading system device needs to be managed For several passive intelligent instruments and meters, in order to increase the reliability of power supply, the method adopted is: thicken the power supply bus cable to reduce line attenuation, which will inevitably increase the engineering cost of the system, and may be due to design reasons and equipment performance deviations. The reasons may cause the power supply voltage of individual passive smart instruments and meters to be at the critical value of power supply, or significantly lower than the working power supply requirements, so that the passive smart instruments and meters work abnormally, which will affect the entire meter reading system and make it impossible to complete the meter reading system. Acquire the data of passive intelligent instruments and meters