WO2020200009A1

WO2020200009A1 - Intelligent gas meter anti-interference metering system

Info

Publication number: WO2020200009A1
Application number: PCT/CN2020/081140
Authority: WO
Inventors: 王滨滨; 刘金梁; 胡莽; 狄鹏; 汪培春; 彭学枝; 陆从杭
Original assignee: 上海飞奥燃气设备有限公司
Priority date: 2019-04-01
Filing date: 2020-03-25
Publication date: 2020-10-08
Also published as: CN109883500A

Abstract

Disclosed is an intelligent gas meter anti-interference metering system. The intelligent gas meter anti-interference metering system comprises a shell (2), an output device (21), and a rotary disk (22), a light-emitting module (23), a light-sensing module (24) and an MCU (25) arranged inside the shell, wherein the rotary disk is configured to be in coaxial transmission connection with a transmission shaft of a counter of a mechanical gas meter via a rotating shaft; the rotary disk forms a light-transmitting hole (221), the light-emitting module and the light-sensing module are respectively arranged on two sides of the rotary disk and are coaxially arranged, and the light-transmitting hole can rotate with the rotary disk to a position between the light-emitting module and the light-sensing module; the light-emitting module and the light-sensing module are respectively electrically connected to the MCU; and the output device is connected to the MCU.

Description

Intelligent gas meter anti-interference metering system

This application claims the priority of the Chinese patent application filed with the Chinese Patent Office with application number 201910257154.1 on April 1, 2019. The entire content of this application is incorporated into this application by reference.

Technical field

This application relates to the field of data acquisition and measurement in instrumentation, for example, to an anti-interference measurement system for a smart gas meter.

Background technique

At present, the measurement data collection in household smart gas meters mainly uses photoelectric or magnetic induction methods to convert mechanical character wheel information into digital information, and display it on the LCD (Liquid Crystal Display) screen. In this process, the mechanical character wheel The accumulator is an indispensable device. This method has the following problems:

1. The cost is high. The cost of a photoelectric accumulator accounts for almost 1/4 of the entire intelligent control part.

2. The anti-interference ability is weak. The photoelectric accumulator is sensitive to strong external light, while the reed switch and Hall accumulator are sensitive to strong magnetic interference. Therefore, these two types of accumulators are prone to errors when interference occurs.

3. The reliability is not high. The mechanical watch transmits the gas consumption information to the word wheel counter through gear transmission. In the process of long-term use, if the gear is severely worn or even out of gear, the entire metering system will not work.

Summary of the invention

The application provides an anti-interference metering system for an intelligent gas meter, which adopts non-contact light sensing counting, has high reliability, can prevent strong magnetic interference, and has low cost.

This application provides an anti-interference metering system for a smart gas meter, which includes a housing, an output device, and a turntable, a light emitting module, a photosensitive module, and an MCU arranged in the housing; the turntable is configured to pass through a The rotating shaft is coaxially connected with the transmission shaft of the counter of a mechanical gas meter; the rotating disk forms a light-transmitting hole, the light emitting module and the photosensitive module are respectively arranged on both sides of the rotating disk, and the light emitting module and the The photosensitive module is arranged coaxially, the light transmission hole can be rotated with the turntable between the light emitting module and the photosensitive module; the light emitting module and the photosensitive module are electrically connected to the MCU; the output device Connect to the MCU.

Description of the drawings

Figure 1 is a schematic structural diagram of an anti-interference metering system for a smart gas meter provided by an embodiment of the application.

detailed description

Please refer to FIG. 1, an anti-interference metering system for a smart gas meter according to an embodiment of the present application includes a casing 2, an output device 21, a turntable 22, a light emitting module 23, a photosensitive module 24, and an MCU (microprocessor) arranged in the casing 2. control unit (microprocessor control unit) 25; the turntable 22 is coaxially connected to the drive shaft of the counter of the mechanical gas meter 1 through the rotating shaft 3; the turntable 22 is formed with a light-transmitting hole 221, and the light-emitting module 23 and the photosensitive module 24 are respectively arranged in Both sides of the turntable 22 and the light emitting module 23 and the photosensitive module 24 are arranged coaxially, the light transmission hole 221 can be rotated with the turntable 22 to a position between the light emitting module 23 and the photosensitive module 24; the light emitting module 23 and the photosensitive module 24 are electrically connected to the MCU 25 respectively Connection; output device 21 is connected to MCU25.

Through the cooperation of the turntable 22, the light-emitting module 23, the photosensitive module 24 and the MCU25, non-contact light sensing counting is realized. When the mechanical gas meter 1 is working, the drive shaft of the counter of the mechanical gas meter 1 will drive the turntable 22 to rotate, thereby The light emitted by the light-emitting module 23 periodically passes through the light-transmitting hole 221 to generate a periodic pulse signal. The photosensitive module 24 receives the pulse signal and sends it to the MCU 25. The MCU 25 can obtain the gas metering information by calculating the pulse signal. The reliability is high, and strong magnetic interference can be eliminated, and the cost is low. The closed design of the housing 2 can prevent the interference of strong external light and improve the accuracy of measurement.

In this embodiment, the first end of the rotating shaft 3 is vertically fixed to the middle of the turntable 22, and the second end of the rotating shaft 3 is coaxially fixedly connected with the transmission shaft of the counter of the mechanical gas meter 1.

The output device 21 includes a display, which is fixed outside the housing 2 and electrically connected to the MCU 25, and the display is configured to display gas metering information calculated by the MCU 25.

The photosensitive module 24 includes a photosensitive diode, and the model of the photosensitive diode may be PT204B. The light emitting module 23 includes a light emitting diode, and the model of the light emitting diode may be 202QRC. The anti-interference metering system for the smart gas meter in this embodiment further includes a wireless module 27 and a flash memory module 26. The wireless module 27 is electrically connected to the MCU 25 and is in communication connection with the gas background server. The flash memory module 26 is connected to the MCU 25. In this embodiment, the model of the flash memory module 26 may be AT25DF041B. The wireless module 27 includes a full Netcom module, and the model of the full Netcom module may be NB86-G.

Through the cooperation of the turntable, the light emitting module, the photosensitive module, and the MCU, this application provides a hardware basis for non-contact light sensing counting, with high reliability, preventing strong magnetic interference, and low cost. The closed design of the shell can prevent the interference of strong external light and improve the accuracy of measurement. The display is used to display the gas metering information calculated by the MCU.

Claims

An anti-interference metering system for a smart gas meter, comprising a casing, an output device, a turntable, a light-emitting module, a photosensitive module and an MCU arranged in the casing; the turntable is configured as a transmission shaft passing through a rotating shaft and a counter of a mechanical gas meter Coaxial transmission connection; a light-transmitting hole is formed on the turntable, the light-emitting module and the photosensitive module are respectively arranged on both sides of the turntable, and the light-emitting module and the photosensitive module are arranged coaxially, the transparent The light hole can rotate with the turntable to between the light-emitting module and the light-sensing module; the light-emitting module and the light-sensing module are respectively electrically connected to the MCU; the output device is connected to the MCU.
The anti-interference metering system for a smart gas meter according to claim 1, further comprising a wireless module, and the wireless module is electrically connected to the MCU.
The anti-interference metering system for a smart gas meter according to claim 2, wherein the wireless module is configured to communicate with a gas background server.
The anti-interference metering system for a smart gas meter according to claim 2 or 3, further comprising a flash memory module connected to the MCU.
The anti-interference metering system for a smart gas meter according to any one of claims 1 to 4, wherein the output device comprises a display, and the display is fixed outside the housing and electrically connected to the MCU.
The anti-interference metering system for a smart gas meter according to any one of claims 1 to 5, wherein the first end of the rotating shaft is vertically fixed to the middle of the turntable, and the second end of the rotating shaft is configured to be connected to the The drive shaft of the counter of the mechanical gas meter is coaxially fixedly connected.
The anti-interference metering system for a smart gas meter according to any one of claims 1 to 6, wherein the photosensitive module comprises a photosensitive diode, and the model of the photosensitive diode is PT204B.
The anti-interference metering system for a smart gas meter according to any one of claims 1 to 7, wherein the light emitting module comprises a light emitting diode, and the model of the light emitting diode is 202QRC.
The anti-interference metering system for a smart gas meter according to any one of claims 2 to 4, wherein the wireless module includes a full Netcom module, and the model of the full Netcom module is NB86-G.