Direct reading meter character wheel surface information array method

Abstract

The invention provides a direct reading meter character wheel surface information array method, which comprises the step of axially arraying encoding strips and Arabic numerals on the side face of a character wheel cylinder, wherein at least two encoding strips form one group, encoding strips in each group of encoding strips are axially arrayed on the side face of the character wheel cylinder, multiple groups of encoding strips are circumferentially arrayed around the side face of the character wheel cylinder, ten Arabic numerals from 0 to 9 are circumferentially arrayed around the side face of the character wheel cylinder, and at least one group of encoding strips axially corresponds to one Arabic numeral. Information on the surface of a character wheel is arrayed by adopting the method provided by the invention, so that the number of sensors in a direct reading meter instrument is reduced, welding points among the sensors are completely avoided, and the rate of finished products of the product reaches 100%. In addition, extremely high metering accuracy is obtained.

Description

technical field [0001] The invention relates to a flow measuring instrument, and relates to a method for arranging information on the surface of a direct-reading meter wheel. Background technique [0002] Counters used in direct-reading meters for gas, water, electricity, fuel oil, etc., mainly include three types: pointer type, character wheel type and pointer character wheel combination type. Because the character wheel structure has many advantages, the commonly used structure is the combination of character wheel type and pointer character wheel. The information set on the surface of the character wheel used in these common direct-reading meters is used to convert and control the rotation and display of other components in the direct-reading meter through electrical components after the sensor reads the data. The information set on the surface of the character wheel of the direct reading meter currently used is arranged according to the information compiled by the tran...

AI Technical Summary

Problems solved by technology

The disadvantage of this arrangement of character wheel information is that the PCB board of the sensor must be flexible so that it can be wound around the circumference of the character wheel, the manufacturing process is complicated, the cost is high, and the installation accuracy is low; The welding position requirements are extremely high, and a slight deviation is a waste product, and the product yield is low; the angular resolution of the character wheel in use is low, generally 4-8 degrees, and this low resolution can easily lead to reading errors. And it is difficult to apply to direct-reading meters that require accurate readings

There is also a way to encode and arrange information on the side of the character wheel, which is to install the PCB board of the sensor between the two character wheels. The disadvantage of this information reading method is that the character wheel is easily stuck during rotation, and the sensor The PCB board occupies the installation space of the word wheel, which reduces the effective data bits, or makes the meter head size too large, which brings more complicated procedures to the installation. Therefore, the product has a high failure rate, a large amount of maintenance, and high manufacturing costs.

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