CN2181713Y - Liquid crytal display screen for taximeter - Google Patents

Abstract

The utility model relates to a liquid crystal display screen for a taximeter, the rectangle liquid crystal display is divided into six display zones according to general technological process, and the six display zones can orderly display running state, rent, running time, unit price, waiting time, and running distance. The information data needed displaying can be processed by a circuit and preliminarily defined on each corresponding display zone, each leading wire of base pin are electrically connected and electrically communicated with the single chip machine core arranged in the taximeter, and the goal of the controls of running information through a single chip computer and display are achieved. The utility model has the advantages of high integration level, reliable performance, simple interface circuit, and clear display. The utility model can completely replace the prior art of digital pipe display.

Description

Liquid crytal display screen for taximeter

The utility model relates to a kind of special liquid crystal display screen that is used for showing on the taximeter operation information.

Along with developing rapidly of transportation, taxi is more and more.By relevant regulations, fee register must be installed and use to taxi, and require employed fee register reliable and stable, and valuation is accurate, and video data information is complete.At present its display part of fee register of using on the taxi all adopts charactron to add light emitting diode to come video data and indication operation state.The luminous intensity of charactron generally between 025～05mcd, is difficult for seeing clearly numeral in the sun, is the high brightness charactron of 2mcd even if adopt luminous intensity, still be difficult for seeing clearly under stronger sunlight, and power consumption is very big.In addition, the demonstration amount of charactron is limited, be difficult for unit price, have the records of distance by the log, information is open-and-shut shows for timing and rent etc., even if can reach the purpose that increases the demonstration amount by the quantity that increases charactron, but its power consumption is too big, equipment manufacturing cost also improves relatively, is unfavorable for popularizing using.In a word, automobile fee register ubiquity under the sunlight and is difficult for seeing clearly at present, and the display message amount is few, interface circuit complexity, shortcomings such as poor reliability.

Goal of the invention of the present utility model is to overcome the shortcoming that exists on the existing taximeter display technique, seek to make a kind of energy clear reliably simultaneously the several data information be concerned about of explicit user and use Chinese character show operation state, simple in structure, reequip LCDs easily.

In order to realize the foregoing invention purpose, the principle that adopts one-chip computer chip processing information data and control to show, utilize the relevant physical device of major part such as housing, line etc. on the existing automobile fee register, carry out the proper circuit reconfiguration again and can use the utility model to make novel automobile fee register.Choose the rectangle LCDs, and with its routinely process handle and to be divided into six viewing areas, its upper left corner shows operational regime for the prompting viewing area with Chinese character; Prompting viewing area flush right partly is main viewing area, shows the rent number with six bit digital; Display screen the latter half is followed successively by four secondary viewing areas from left to right, is respectively applied for to show the time of running, unit price, waiting time and stroke.Each viewing area need show as rent, unit price, have the records of distance by the log and the calendar scheduling information data is given through conventional processing of circuit and being defined in earlier on corresponding each viewing area of display screen, and itself and monolithic movement illustrated electric connection according to pin leads, to reach the purpose that movement control shows.During use, the utility model is fixed in the correct position that original fee register screen position or otherwise designed be installed on taxi gets final product.

The utility model compared with prior art has the integrated level height, dependable performance, and interface circuit is simple, clear display, and the fee register advantages of simple structure and simple that forms.

Fig. 1 is the display structure synoptic diagram of the utility model.

Fig. 2 is the pin leads explanation synoptic diagram of the utility model.

Describe below in conjunction with accompanying drawing.The utility model utilizes the one-chip computer in the fee register to control its LCDs work by two LM7321 or LM7324 integrated circuit.Choose rectangle finished fluid crystal display screen and with its routinely process handle and to be divided into six viewing areas, its upper left corner is prompting viewing area 2, shows operation charging state with Chinese character, as " sleet ", " making the return trip empty ", " dirt road ", " night " four kinds; The flush right of highlight 2 partly is main viewing area 1, shows rent and with the hanzi form unit of display " unit " or be shown as " liter " through cpu control and wait other rent units with six bit digital; Display screen the latter half is followed successively by secondary one, two, three, four viewing areas from left to right, and the moment when a wherein secondary viewing area 3 shows operation also prompts for the morning or afternoon with AM or PM printed words; Secondary two viewing areas 4 are in order to demonstration hire a car unit price, the i.e. rent of per unit distance; Secondary three viewing areas 5 are used to demonstrate hires a car time of waiting conveniently to wait charging; Secondary four viewing areas 6 are used to show the distance of operation.Giving through processing of circuit such as rent, unit price, distance, calendar scheduling information data of showing of needs is defined in earlier that each corresponding district of selected display screen goes up and its each pin is electrically connected and the corresponding electric connection of single-chip microcomputer in the fee register by pin leads explanation 8 again, also can show correctly that the corresponding information data are as the criterion to reach monolithic movement control operation information.The circuit of its pin leads is linked to be and is 80+4,79+7,75+67,74+65,73+64,72+61,71+59 and 43+49.The pin of certain section correspondence connects high level, and this section shows with regard to " lighting ".Can handle and control information needed data and demonstration by selected LM7321 or LM7324 chip.The screen position of existing automobile fee register is fixed in the utility model border area 7 or correct position that otherwise designed is installed in taxi can realize showing valuation.

Claims (2)

1, a kind of automobile fee register LCDs that is used for showing on the taximeter operation information, it is characterized in that the process processing is divided into six viewing areas with the rectangle LCDs routinely, its upper left corner shows operational regime for the prompting viewing area with Chinese character; Prompting viewing area flush right partly is main viewing area, shows the rent number with six bit digital; Display screen the latter half is followed successively by four secondary viewing areas from left to right, shows the time of running, unit price, waiting time and stroke respectively.

2, automobile fee register LCDs according to claim 1, the circuit that it is characterized in that pin leads are linked to be and are 80+4,79+7,75+67,74+65,73+64,72+61,71+59,43+49.

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