阅读说明：本技术 一种智能燃气表计量转换装置 (Intelligent gas meter metering conversion device ) 是由 汪泽南 朱福娟 文斌 于 2020-12-13 设计创作，主要内容包括：一种智能燃气表计量转换装置,包括：磁铁、斜齿轮、字轮、磁脉冲采集线路板和MCU微系统；磁铁设于计数器的斜齿轮内,磁铁可随斜齿轮与计数器的字轮的最低位同轴转动；磁脉冲采集线路板装载有磁传感器；MCU微系统和磁脉冲采集线路板连接。本发明当燃气表通过气体时,带动斜齿轮转动,使磁脉冲采集线路板区域形成周期变化的磁区从而产生脉冲,脉冲传给MCU微系统完成计数；本发明结构简单、安装便利,且计量准确。(A metering conversion device of an intelligent gas meter comprises: the device comprises a magnet, a helical gear, a character wheel, a magnetic pulse acquisition circuit board and an MCU (microprogrammed control unit) microsystem; the magnet is arranged in the helical gear of the counter and can rotate along with the helical gear and the lowest position of the character wheel of the counter coaxially; the magnetic pulse acquisition circuit board is loaded with a magnetic sensor; the MCU microsystem is connected with the magnetic pulse acquisition circuit board. When the gas meter passes through gas, the helical gear is driven to rotate, so that a magnetic pulse acquisition circuit board region forms a periodically-changing magnetic region to generate pulses, and the pulses are transmitted to the MCU micro system to finish counting; the invention has simple structure, convenient installation and accurate measurement.)

1. The utility model provides an intelligent gas table measures conversion equipment which characterized in that includes: the device comprises a magnet, a helical gear, a character wheel, a magnetic pulse acquisition circuit board and an MCU (microprogrammed control unit) microsystem; the magnet is arranged in the helical gear of the counter and can rotate along with the helical gear and the lowest position of the character wheel of the counter coaxially; the magnetic pulse acquisition circuit board is loaded with a magnetic sensor; and the MCU microsystem is connected with the magnetic pulse acquisition circuit board.

2. The metering conversion device of an intelligent gas meter according to claim 1, wherein the lowest bit word of the counter rotates one turn, the helical gear rotates one turn, and the next lowest bit of the counter is advanced one bit to record one metering unit, and at this time, in a certain area on the right side of the counter, the magnetic area shows periodic change along with the rotation of the magnet.

3. The metering conversion device of an intelligent gas meter according to claim 2, wherein two magnetic sensors are provided.

4. The metering conversion device of an intelligent gas meter according to claim 3, wherein the magnetic sensors are distributed at specific positions and alternately enter and exit the magnetic area to form pulses along with the rotation of the magnet.

5. The metering conversion device of an intelligent gas meter according to claim 4, wherein the MCU microsystem forms a unit meter when receiving a group of pulses of two magnetic sensors in turn.

6. The metering conversion device of an intelligent gas meter according to claim 5, wherein the helical gear is provided with a mounting hole for fixing the magnet.

7. The metering conversion device of an intelligent gas meter according to claim 6, wherein the magnetic pulse acquisition circuit board is mounted on the right side of the counter and close to the helical gear.

Technical Field

The invention relates to the technical field of counters, in particular to a metering conversion device of an intelligent gas meter.

Background

The intelligent gas meter has gradually replaced a common gas meter due to the advantages of charging, management and the like, and the intelligent gas meter has accurate and effective electronic metering, so that the metering accuracy of a mechanical part of the gas meter is required, and the acquisition of electronic pulses is also required to be completely accurate; most of electronic counting parts of intelligent gas meters in the existing market adopt magnetic sampling, the strength of magnetism can be influenced by temperature, environment and individual difference, and certain deviation can exist in the sensitivity of a magnetic sensor and the relative position of the magnetic sensor and a magnet, so that pulses can be lost in the using process of the intelligent gas meters, and the electronic metering function of the intelligent gas meters is influenced.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects in the prior art and providing the metering conversion device of the intelligent gas meter, which has the advantages of simple structure, convenience in installation and accurate metering.

The technical scheme adopted by the invention for solving the technical problems is as follows: a metering conversion device of an intelligent gas meter comprises: the device comprises a magnet, a helical gear, a character wheel, a magnetic pulse acquisition circuit board and an MCU (microprogrammed control unit) microsystem; the magnet is arranged in the helical gear of the counter and can rotate along with the helical gear and the lowest position of the character wheel of the counter coaxially; the magnetic pulse acquisition circuit board is loaded with a magnetic sensor; and the MCU microsystem is connected with the magnetic pulse acquisition circuit board.

Furthermore, the lowest-order word of the counter rotates for one circle, the helical gear rotates for one circle, the next lowest order of the counter is recorded with one metering unit, and at the moment, in a certain area on the right side of the counter, the magnetic area shows periodic change along with the rotation of the magnet.

Further, the number of the magnetic sensors is two.

Further, the magnetic sensors are distributed at specific positions and alternately enter and exit the magnetic area along with the rotation of the magnet to form pulses.

Furthermore, when the MCU microsystem receives a group of pulses of the two magnetic sensors in turn and alternately, a unit measurement is formed.

Furthermore, the helical gear is provided with a mounting hole for fixing the magnet.

Furthermore, the magnetic pulse acquisition circuit board is arranged on the right side of the counter and close to the position of the bevel gear.

When the gas meter passes through gas, the helical gear is driven to rotate, so that the magnetic pulse acquisition circuit board region forms a periodically-changing magnetic region to generate pulses, and the pulses are transmitted to the MCU micro system to finish counting.

The invention has the beneficial effects that:

and 1, the MCU microsystem sequentially and alternately receives a pulse of the two magnetic sensors to form a unit measurement. When the gas meter is used in daily life, the magnet rotates along with the helical gear of the counter, so that the magnetic field at the position of the sensor periodically changes, and when the magnetic field of the sensor is in a critical state of triggering pulse and not triggering pulse, the situation that a single sensor triggers pulse by mistake is easily caused due to the shaking of the counter, and therefore wrong metering is caused. The pulse generated continuously by the single sensor of the invention can be counted as one pulse, thereby effectively filtering the interference.

2. The counter magnet is arranged in the helical gear, the magnet rotates for a circle along with the helical gear when the character wheel rotates for one circle, the helical gear is close to the right side of the counter, and a large area on the right side of the counter can induce a magnetic field; the magnetic sensors are arranged in the area, so that the two arranged sensors respectively enter the magnetic field along with the rotation of the magnet and are not in the magnetic field simultaneously, and effective and stable pulses are generated. Relative to the position of the sensor, the helical gear is not easy to generate left and right position deviation shake along with the rotation of the character wheel, so that the electronic metering deviation caused by the character wheel shake during the metering of the gas meter is reduced.

3. The magnetic acquisition circuit board has simple circuit and convenient installation, and can obviously improve the reliability of the electronic measurement of the intelligent gas meter for magnetic pulse sampling.

Drawings

FIG. l is a schematic diagram of the structure of the present invention.

In the drawings: 1. counter, 2, helical gear, 3, character wheel, 4, magnetic pulse collection circuit board.

Detailed Description

The following examples are given to further illustrate the embodiments of the present invention:

as shown in fig. 1, an embodiment of a metering and converting device of an intelligent gas meter includes: the device comprises a magnet, a helical gear 2, a character wheel 3, a magnetic pulse acquisition circuit board 4 and an MCU (microprogrammed control unit) microsystem; the magnet is arranged in the bevel gear 2 of the counter 1 and can rotate coaxially with the bevel gear 2 and the lowest position of the character wheel 3 of the counter 1; the magnetic pulse acquisition circuit board 4 is loaded with a magnetic sensor; the MCU microsystem is connected with the magnetic pulse acquisition circuit board 4.

The character wheel 3 at the lowest position of the counter 1 rotates for one circle, the helical gear 2 rotates for one circle, meanwhile, one metering unit is recorded for one position at the lower position of the counter 1, and at the moment, in a certain area on the right side of the counter 1, a magnetic area shows periodic change along with the rotation of the magnet.

The magnetic sensors are distributed at specific positions and alternately enter and exit the magnetic area along with the rotation of the magnet to form pulses, the MCU microsystem forms unit measurement when receiving a group of pulses of the two magnetic sensors in turn, the helical gear is provided with a mounting hole for fixing the magnet, and the magnetic pulse acquisition circuit board 4 is mounted on the right side of the counter 1 and close to the position of the helical gear.

Those not described in detail in the specification are well within the skill of the art.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as being within the protection scope of the present invention.