Automatic meter reading system for water meters through short messages

Abstract

The invention relates to an automatic meter reading system for water meters through short messages, which comprises a water meter transmitting module and a collector, wherein the water meter transmitting module is matched and installed together with a basic meter of an underground water meter; the collector is installed on the ground; the water meter transmitting module and the collector form a wireless receiving and transmitting system; the water meter transmitting module comprises a meter shell, an RF wireless receiving and transmitting module circuit board, a battery chamber and a magnetic-sensitive component, wherein the RF wireless receiving and transmitting module circuit board, the battery chamber and the magnetic-sensitive component are fully sealed in the meter shell; the collector comprises a power supply circuit, a single chip microprocessor MCU control circuit, a GSM short message module, a memory circuit, a clock circuit, an infrared communication circuit and a wireless receiving and transmitting circuit; and the power supply of the collector uses a power supply mode of commercial power as main power matched with a battery as supplement power and realizes automatic selection and switching through a relay J1. In the invention, a split type structure is used, a sampling circuit and the basic meter of the water meter are installed together to form a sealed water meter module, and the power consumption is small; and the collector is installed outside a meter well, the power supply mode of the GSM module can be automatically switched and be convenient for debugging production or customer use, and an SIM card can be replaced at any time easily and conveniently and also has good expandability.

Description

1. Technical field: [0001] The invention relates to an automatic meter reading technology for water meters, in particular to a short message automatic meter reading system for water meters. 2. Background technology: [0002] In the water supply network, large-caliber water meters (referring to water meters with a caliber of DN50 or more) are required, whether in corporate factories or residential areas. It is convenient for the water supply management department to make statistics on the water consumption of the pipe network, adjust the allocation of water resources, and find abnormalities in the pipe network. The traditional method is to manually read the readings of the meter head on a regular basis. Since the large-diameter meters are generally installed in the meter well, the location is remote and scattered, the cost of manual meter reading is high, the efficiency is low, and the data obtained are very lagging statistics, which is difficult Achieve real-time monitoring...

AI Technical Summary

Problems solved by technology

The problem at this time is: ①. The surface well and the cover will cause signal shielding and affect the communication distance

②. If the power supply is fully powered by the built-in battery, the continuous working time will be very short, and the battery needs to be replaced every year

Because under the requirement of real-time meter reading, the GSM module consumes a lot of power

③External power supply, there will be a problem of sealing the interface, because the surface well is often humid and will soak in water

④. The GSM SMS module needs to be installed with a SIM card before it can be used. If the meter is installed and then the card is installed, there will be a sealing problem. If the card is sealed first, and then the meter is installed, the SIM card cannot be replaced, which is inconvenient for users.

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