Single ring coded directly reading type radio remote transmitting water meter

Abstract

The single ring coded directly reading radio teletransmitting water meter includes one reformed mechanical meter as basic meter to provide direct reading function, one low power consumption radio teletransmitting module as the data treating and transmission unit, and one directly reading electronic emitting device comprising three parts of infrared emitting tube, single ring semi-circular coding holes on the character wheels of the basic meter and infrared receiving code tubes and providing electronic directly reading function. The digital code is acquired from the character wheels with the emitting device, treated in the radio teletransmitting module and uploaded to the managing computer while the command from the managing computer is received. The radio teletransmitting module is powered with lithium cells, and radio communication is completed in the network communication protocol ZigBee and frequency 2.4 GHz.

Description

technical field [0001] The invention relates to a single-ring coding direct-reading wireless remote water meter, in particular to a single-ring coding direct-reading low-power wireless remote water meter. Background technique [0002] The traditional mechanical character wheel water meter has a long history, mature technology, simple structure and low cost. With residential unitization and high-rise development, the meter reading work of water supply companies is facing huge challenges: on the one hand, it is difficult to enter the household, and on the other hand, the workload of meter reading has increased sharply. Realizing digitalization of water meters and automation of meter reading has become a difficult problem to be solved by water supply enterprises and users. [0003] In the 1990s, the digitalization of water meters and the automation of meter reading, although some progress has been made, but too many systems have failed to operate normally. The technical reaso...

AI Technical Summary

Problems solved by technology

The pulse counting method is not to read the measurement results on the mechanical counter dial, but to re-do the electronic measurement on the same water meter, the so-called double measurement, which is unreasonable from a technical point of view

In addition, there are a series of inherent technical defects in the pulse counting technology: the counting process relies on a stable and reliable uninterrupted power supply, which is difficult to guarantee in engineering practice; the initialization and maintenance of the pulse counting water meter is heavy; once the pulse counting goes wrong, the error will accumulate It cannot be eliminated, and the current water supply network cannot avoid the occurrence of "water hammer" phenomenon (water meter self-biography). After the large-scale promotion of "one household, one meter", the "water hammer" phenomenon is particularly obvious. The monthly error of this alone is as high as several cubic meters Meter

The above research results have improved the defects of pulse counting to a certain extent, but cannot eradicate the inherent defects of pulse counting

Patent ZL02211551.X proposes a direct reading device with a reflective strip installed on the dial of a mechanical character wheel, and obtains the code of the rotation angle of the character wheel according to the strength of the reflected light signal. This patent overcomes the defects of the pulse counting method, but there is an electrical signal code The signal has no error correction function, the sensitivity is poor, and it is sensitive to water quality (mainly scale)

The current wireless remote water meter is limited by the technology at that time, and the power consumption is generally too large, which is not suitable for battery power supply; if the battery is undervoltage, the water supply will be cut off, which will affect the daily life of users.

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