| 摘要 |
This invention is for a kind of the security pulse generator and methods, which are applied in the fuel dispensers. Said fuel dispenser comprises a flow measuring transducer and a control main board on which there is a measuring microprocessor on the control main board. Said security pulse generator includes: a pulse signal generating component, which generates the corresponding pulse signal according to the rotation of the flow measuring transducer; An encoding microprocessor, which receives and transduces said pulse signal, transmit it to said control main board, and in the meanwhile it encodes said output pulse signal. A measuring microprocessor, which receives and decodes output pulse number encoded data from said encoding microprocessor and transforms it to the output pulse number after decoded it, then to compare it to the pulse number of the control main board to determine if there is suspecting frauds in the fueling process.
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