Password type gas meter based on electromagnetic induction principle

Abstract

The invention discloses a password type gas meter based on the electromagnetic induction principle. The gas meter comprises a gas meter body and further comprises a gas electromagnetic valve, and the lower end of the gas electromagnetic valve is connected with a gas inlet nozzle 11 of the gas meter body; a control box is fixedly arranged on the side wall of the gas electromagnetic valve, and a second microprocessor is arranged in the control box; the second microprocessor is connected with the gas electromagnetic valve, the second microprocessor is further connected with a clock module and a keyboard, a first-month password library is pre-stored in the second microprocessor, and the second microprocessor further obtains a second month password input by a user through the keyboard; and the second microprocessor also controls the opening and closing of the gas electromagnetic valve according to the second-month password input by the user. According to the invention, the opening of the gas electromagnetic valve can be controlled only by inputting the correct second-month password; and the natural gas is used.

Description

technical field [0001] The invention relates to the technical field of gas meters, in particular to a coded gas meter based on the principle of electromagnetic induction. Background technique [0002] Application number: 202010838583.0, application publication number CN 112033488 A, applicant: Chongqing Shancheng Gas Equipment Co., Ltd., patent name: natural gas meter with compound adjustment function and its control method; although the gas meter used can accurately measure the amount of natural gas For metering, but the gas meter is usually installed in the user's room. If the user defaults on the gas fee, it is usually inconvenient for the administrator to cut off the natural gas supply to the user. There are also patents that require the user to pre-store the fee by setting an IC card on the gas meter. Natural gas is used, but its gas meter structure is relatively complicated. [0003] Therefore, the defect of the prior art is that the gas meter is usually arranged in t...

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Problems solved by technology

[0002] Application number: 202010838583.0, application publication number CN 112033488 A, applicant: Chongqing Shancheng Gas Equipment Co., Ltd., patent name: natural gas meter with compound adjustment function and its control method; although the gas meter used can accurately measure the amount of natural gas For metering, but the gas meter is usually installed in the user's room. If the user defaults on the gas fee, it is usually inconvenient for the administrator to cut off the natural gas supply to the user. There are also patents that require the user to pre-store the fee by setting an IC card on the gas meter. Use natural gas, but its gas meter structure is more complicated

[0003] Therefore, the defect of the prior art is that the gas meter is usually arranged in the user's room. If the user is in arrears with the gas fee, it is inconvenient for the administrator to cut off the natural gas supply to the user. more complicated

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