Nanoampere-level micro power-consumption gauge head data acquisition unit

Abstract

The invention relates to an automatic data acquisition unit for a mechanical flow meter, in particular to a nanoampere-level micro power-consumption gauge head data acquisition unit which adopts a dry reed pipe to acquire gauge head data and overcomes the defects that a gauge head data acquisition unit in the prior art has large power consumption and is easily interfered by an external magnetic field. The nanoampere-level micro power-consumption gauge head data acquisition unit comprises a sensor connected with a microprocessor; the sensor comprises a first dry reed pipe which is provided with a single-pole double throw switch, and the two switch contacts of the first dry reed pipe are respectively connected with a high level and a low level, and output corresponding level signal to the microprocessor via an output end. The invention is used for the data acquisition of the mechanical consumption meter, can achieve zero power consumption of an acquisition circuit to reduce the power consumption of the whole unit, further adopts a structure of double dry reed pipes and a magnetic shield plate to improve the anti-interference ability of the unit, and is used together with the microprocessor with very low power consumption to realize the nanoampere-level micro power-consumption gauge head data acquisition.

Description

technical field [0001] The invention relates to data collection and processing technology, in particular to a mechanical flowmeter data automatic collection device. Background technique [0002] The counting principle of mechanical flow meters, including gas meters and water meters, is to use the flow of gas or liquid to drive the counting wheel to rotate for counting. In order to realize remote automatic meter reading, it is necessary to convert the rotation of the counting wheel into an electrical signal. In addition to ensuring the accuracy of the data collection of the meter head, low power consumption is an indicator that must be achieved because it is a micro device embedded in the meter head. This is a difficult task, and many developers have made various attempts and efforts, but so far, this difficult problem has not been solved from a practical point of view. [0003] Taking the gas meter head as an example, its basic structure includes a counting base wheel and s...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a nanoampere-level micro-power consumption device that uses a reed switch for meter data acquisition in view of the shortcomings of the prior art meter data acquisition device that consumes a lot of power and is easily disturbed by an external magnetic field. Head data acquisition device

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