COMPANY INTRODUCE

COMPANY INTRODUCE

China Hongyang Group, is an integrated enterprise with the research & development, production and marketing of Fuel Dispenser and related accessories as well as service station concerning equipments. It concentrates on the relative manufacture & services of filling station such as Hongyang tax control Fuel dispenser, IC Card fuel dispenser, manage system of network for stations, submerge pump and liquid level devise. China Hongyang Group, designed supplier of SinoPec and PetrolChina, our HONGYANG products have been sold to over 50 countries in South-east Asia, Mid-east, Africa, Europe and well received in their markets.

ur kinds of display mode: Mode I: serial BCD display, in which volume 6 digits, money or sales 6 digits, PPU or unit price 4 digits, totally 16 digits are transmitted out in means of serial mode, realizing operation of memory, coding and drive in display. Diagram 3-5: Main display board figure Mode II: serial display, in which chip transmit 16 digits including volume 6 digits, sales 6 digits and PPU 4 digits, memorizing and driving in display. Mode III and IV: parallel BCD display, in which chip transmits 16 digits codes including volume 6 digits, sales 6 digits and PPU 4 digits by means of parallel, once time one digit, memorizing, coding and driving in display. Most of fuel dispenser manufacturers recently adopt BCD serial mode to design display board, only very few adopt serial display mode. 1638300217170Display board structures are illustrated in Diagram 3-6 and 3-7. Diagram 3-6: LCD display board structure with parallel drive Diagram 3-7: LCD display board structure with serial drive Being a electric component easy to be failed, the hard structure of display board is introduced in detailed. LCD basic principle and working principle Liquid crystal a stable phase between l fuel dispenser iquid and solid in terms of thermodynamics, characteristic of not only liquidity and continuity under a certain temperature range, but crystal trait ---- long stick molecule, large proportion of width to length, a bridge between the two polarities. LCD Structure illustrated in Diagram 3-8, electrodes are made various letters, number or matrix according to different requirements. Diagram 3-8: Basic structure of LCD 8-segment LCD and drive 8-segment display tube has two drive modes of static and hour-division. Fuel dispenser usually adopt static drive mode. Static drive circuit and wave showed in Diagram 3-9, the drive mode of LCD display is varied from that of LED display. As for LED only need to connect invariable conduct or cut off voltage to control emitting or wink of LED, but for LCD should not connect inv fuel dispenser fuel dispenser

tion　　 specific. (singlehost or multihost) thismight mean that no card　　 processing is available or somecards are anyway　　 available. Requests for Card processes executable　　 by EPS off-line as fallback never return this error.　　 CommunicationError OverallResult-value on Diagnosis-request: host it is up to the application to repeat it or ignore the　　 system not available. error.　　 FormatError Complete failure. The request cannot be This is a specific version of the Failure. It either　　 handled or is mistakenly (unknown) formatted. means a bug in the implementation or the　　 trans fuel dispenser mission to EPS not delivering the message with　　 the necessary integrity. The cashiercustomer might　　 retry the operation; it might happen occasionally.　　 Being an exceptional situation it might not be　　 necessary to implementan automatic block of the　　 application: this is an application specific decision.　　 ParsingError fuel dispenser fuel dispenser

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