Wireless and passive water meter and gas meter

A wireless passive, gas meter technology, applied in volume indication and recording equipment, conversion sensor output, signal transmission system, etc., can solve the problems of RFID reader and writer cannot exchange data with single-chip microcomputer, RFID card does not provide single-chip microcomputer interface, etc. Easy to read, easy to seal, easy to process

Inactive Publication Date: 2005-10-26
ZHEJIANG UNIV
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  • Abstract
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Problems solved by technology

[0005] (3) The measurement system of the electronic pulse must always be powered
[0007] Radio frequency (RFID) card technology has used radio waves as a channel for power transmission and data transmission at the same time, but the RFID card does not provide a single-chip interface, so the RFID reader cannot exchange data with the single-chip microcomputer in the water meter and gas meter

Method used

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  • Wireless and passive water meter and gas meter
  • Wireless and passive water meter and gas meter
  • Wireless and passive water meter and gas meter

Examples

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Embodiment example

[0062] The encoding is 0,0,0,1,1,1,1,1,0,1,0,1,1,1,0,0,0,1,0,0. Hollow positions are: 21, 2, 32, 3, 43; 54; 65, 6, 76; 98; a total of 4 holes. Such as Figure 5 The circuit board shown is installed with 7 pairs of infrared transmitting and receiving tubes on a circle with a diameter of 10mm. The transmitting tubes and receiving tubes are packaged in 0603 with an interval of 18 degrees.

[0063] After the character wheel realizes the absolute coding, it can be easily recognized by the single-chip microcomputer when remote transmission is required. The purpose of inventing absolute codes is, for example figure 1 , a remote transmission system with a distance of several meters is formed by the base meter, the master station, and the computer. The base table and the master station can be in one-to-one communication mode or in one-to-many communication mode.

[0064] The working process of the master station is, such as Figure 6 As shown, the radio wave transmitting and recei...

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Abstract

The invention discloses a wireless and non-source water meter and gas meter. It has the intelligent water meter, the gas meter and the main station recording the meters. The intelligent water and gas meters carve the absolute codes on the mechanical character wheel of the meters; equip the infrared sending and receiving tubes at two sides of the wheel; equip the radio wave receiving and adjusting circuits in the meters; the water and the gas meters do not connect the electric source; the main station is the radio wave launching and receiving circuit. The effects of the invention are: (1) the absolute coding takes less space and is easily processes; (2) the meters simultaneously have mechanical and digital reading and keep accordance; (3) easily sealed; (4) the main station and the water and gas meter exchange the data through radio communication.

Description

technical field [0001] The invention relates to the measurement of volume, flow, mass flow or liquid level, in particular to a wireless passive water meter and gas meter. Background technique [0002] At present, a series of water meters, gas meters and other (household) instruments with remote transmission functions have been proposed, one of which is digital processing through pulse counting, that is, for a certain rotating machine, pulses are generated by optical and magnetic effects. Type electrical signal, accumulative reading. This approach has some disadvantages: [0003] (1) Mechanical readings and electronic readings are often inconsistent and prone to disputes; [0004] (2) Electronic pulse errors are permanently added to the result; [0005] (3) The measurement system of the electronic pulse must always be powered. [0006] Therefore, a bus-type passive remote transmission water meter and gas meter was proposed. It is not necessary to supply power to the meter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F15/06
Inventor 戴华平
Owner ZHEJIANG UNIV
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