Method for remote controlling fuel gas meter

Abstract

The invention is a remote control method for a remote controller, firstly the infrared transmitting circuit in the remote controller transmits wakeup, value charge, valve turn-on, valve turn-off instructions and other instructions to the infrared receiving circuit of a fuel gas meter in a first frequency form, the fuel gas meter makes judgment and comparison on corresponding instructions by the information stored in second data storage circuit, and then executes corresponding actions according to the comparative results, and besides, returns its states through infrared transmitting circuit back to the remote controller in a second frequency form, and the remote controller displays the states on display screen. And the invention can really implement multifunctional operations for a fuel gas meter, such as wakeup, value charge, valve turn-on, valve turn-off, meter reading, and inquiry, therefore worth of spreading and applying to the existing fuel gas meters.

Description

technical field [0001] The invention relates to a remote control method for an intelligent meter, in particular to an infrared remote control method for an intelligent gas meter. Background technique [0002] At present, most of the gas meters used in the domestic market are prepaid gas meters, that is, the membrane gas meter is used as the base meter, and the prepaid control module is added. Among them, the information transmission carrier of the prepaid control module mostly adopts IC Card. When in use, the user goes to the gas company to purchase gas with the original IC card, and then inserts the IC card into the card holder. When the purchased gas quantity is input by the IC card, the pulse signal output by the counting sensor is used to check and subtract. When the check is reduced to zero, Close the control valve on the gas meter to stop gas consumption. Therefore adopt such using method, have brought certain convenience to user and gas company. However, in the pro...

AI Technical Summary

Problems solved by technology

However, it can be known from its circuit analysis that because the transceiver lacks data acquisition circuits, data storage circuits and various embedded software, it cannot give full play to the comparison, calculation, identification and judgment functions that the microprocessor should have. The input transistor Q3 There is no comparable data to identify the serial data, and it can only play a single function of information transmission, so it is far from meeting the multi-functional requirements of users.

In addition, the single operating frequency of the transceiver is only 38KHz, which is not easy to transmit and receive between the remote control and the gas meter, and the same circuit structure is used in the remote control and the gas meter. The result of its information sending and receiving either produces "self-excitation" in the remote control, or produces "self-excitation" in the gas meter, which loses the meaning of practical application

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