CN2114142U - Pocket electronic length-measuring and price-counting instrument - Google Patents

Abstract

The utility model relates to a miniature electronic measuring instrument, which belongs to the technical field of the electronic measurement. The miniature electronic measuring instrument which is mainly used for the length measurement of the objects, such as textiles, etc. can display the measured values and the prices of the objects. The miniature electronic measuring instrument has the advantages of simple structure, easy portability, and prompt operation. The basic work principle of the miniature electronic measuring instrument is that the measured objects can drive measuring wheels to turn, and then, the turning signal is transmitted to a processing device which can calculate the lengths and the total prices of the measured objects, and the miniature electronic measuring instrument can control a display device to display.

Description

Pocket electronic length-measuring and price-counting instrument

The utility model relates to a kind of contact-type electronic length measuring instrument.

In current business activity, the shop-assistant is to go out length, calculate total price with abacus or counter with dipstick metering earlier when selling textile such as cloth, and is pretty troublesome like this.And when cloth reaches more than four or five meters, will be many times with one meter long dipstick metering.Because everyone measurement has degree of tightness, personal error at this moment is very big.Sometimes, after the amount of being a saleswoman was intact, client required again oneself to measure one time again, and both sides' measured value is often different, then the shop-assistant again weight once so both delayed both sides' time, easily cause both sides' disagreement again.

The purpose of this utility model provides a kind of measurement valuation instrument, it not only can measure the length of measured object quickly and accurately, and can on display screen, reveal simultaneously length, unit price and the total price of commodity, improve shop-assistant's work efficiency, reduce client's stand-by period, also be beneficial to client's supervision, not only can be used for commodity retail, also can be used for the wholesale of commodity and take inventory.

The utility model comprises microprocessor, measuring mechanism, keyboard input mechanism and display screen, they are to be contained in the handheld shell that has an easy handle, keyboard and control knob all are configured on the shell, only just can operate with hand, shell is provided with display screen, and it can be shown to the user to the measurements and calculations result.

Core of the present utility model is a microprocessor, and it can accept the instruction from four can refer to press a button (unit price input, measurement, zero clearing and total prices).The addition circuit similar with common pocket calculator arranged in this processor, and common pocket calculator has so feature: after " A " "+" "=" manual input counter.Whenever click "=" key, counter just " A " adds up once, until infinite.In the utility model, when by " measurement " key, just " A " this special value input addition circuit, microprocessor is in overlaying state, draws two leads respectively in measuring mechanism on the circuit at "=" number two ends in the line again.Measuring mechanism of the present utility model mainly comprises a pinch wheels and a measuring wheel, and pinch wheels is used to clamp cloth to be measured, when cloth relative measurement device moves, can drive measuring wheel and rotate.The measuring wheel revolution moves 1/B week (B is a positive integer), just draws lead to above-mentioned two and connects once, so the stack circuit just adds up " A " value once, wherein " A " value is 1/B times of the measuring wheel circumference.So the numerical value that circuit adds up is exactly the revolution of measuring wheel and the product of girth, the length of the cloth by pinch wheels and measuring wheel just.

During operation, turn on the power switch earlier, just can be by the unit price input keyboard institute's order valency input microprocessor, microprocessor is presented at unit price on the display screen again, stores with reservoir simultaneously.At this moment again cloth to be measured is clipped between measuring wheel and the pinch wheels, press the measurement button, a hand-held cloth then, one holds measuring appliance, make measuring appliance on the cloth edge along its length middling speed advance, making cloth drive measuring wheel rotates, measure length by measuring mechanism, be presented on the display screen by microprocessor, microprocessor multiplies each other unit price of storing and the length of measuring simultaneously, draw total price, be also shown on the liquid crystal display.

From the above as can be seen, the utlity model has be easy to carry about with one, mechanism is simple, operate advantage rapidly, it finishes one-shot measurement and calculating.Consuming time need are about 20 seconds, than high times of the ruler efficient of present usefulness.And it not only can be used for the measurement of textiles such as cloth, chemical fibre, also can be used for not only can be used for business activity in the linear measure longimetry of linear article such as thin type article such as plastic sheeting, paper, iron sheet and electric wire, also can be used in factory and the family.

Be the description of the drawings below.

Fig. 1 is a front elevation of the present utility model, has shown the shell mechanism that handheld operation is used.

Fig. 2 is the stereographic map of an embodiment of the present utility model, among this embodiment electronic pocket calculator and this measuring appliance is united two into one, and not only can be used for measuring, and also can carry out some simple mathematical computings by hand, and wherein 201 are logical cloth groove.

Fig. 3 is the structural representation of measuring mechanism of the present utility model.

Fig. 4 is an Electronic Design block scheme of the present utility model.

Fig. 5 is the process flow diagram of explanation the utility model operating process.

Be an accompanying drawings most preferred embodiment of the present utility model below.

Among Fig. 1,100 are amount cloth start-finish line, and when surveying cloth, the starting point of cloth and terminal point all should align with this line.101 for clamping the button of determinand, and 102 for loosening button, is carved with " closing " thereon respectively and " opens " two words.103 is LCDs, and " length " on it, " unit price " words such as " total prices " are on the liner plate 306 that is imprinted under the liquid crystal display, sees through liquid crystal display and can see them.104 is power switch, and 105 is the unit price input keyboard, and 106 for measuring button, and 107 is reset button, 108 is the total price button, and 109 is reset button, and 110 is the measuring appliance shell, and 111 is shallow trench or the shallow projection on the shell, be convenient to hold on the one hand, be difficult for skidding, can increase aesthetic property on the other hand.

Fig. 3 is the measuring mechanism sectional schematic.300 are logical cloth groove, and 301 is shell, and when clamping button 302 was pressed, resilient material 311 was compressed, and braking skewer 318 inserts in the breaker slot 317 that clamps button 302 under spring 319 effects, makes 302 can not rebound back.At this moment pinch wheels 308 is near measuring wheel 309, because distance is very little between this moment 308 and 309, and things such as cloth all have thickness, in order to make a suitable clamping force is arranged between two-wheeled, a design slide plate 304 in 302, flexible material 303 on it is when determinand is thicker, 304 move on can be a little, and scalable clamps power.And the surfaceness of pinch wheels and measuring wheel manufactured materials is bigger, and have on the two-wheeled tiny can intermeshing rill so that measured object is non-slip between two-wheeled.

When beginning to measure, measuring wheel 309 is driven, so edge cam 312 also and then changes, in order to improve measuring accuracy, 312 end faces have two to five " protruding " to rise, this " protruding " risen and once connected bar 314 whenever, just push away it and move right, draw lead 315, when low spot that 314 run on 312 end faces thereby connect, its resilience under the effect of spring 313 is so the loop is disconnected again.

When measurement finishes, press and loosen button 320, make brake rod 318 leave groove 317, clamp button and under the effect of compressed resilient material 311, rebound, make 308 to leave 309, loosen measured object.

Among Fig. 3,305 is liquid crystal display, and 306 are the liner plate under the liquid crystal display, and 307 is the unit price input keyboard, and 316 is microprocessor, and 321 is circuit board, and 322 is battery.

Fig. 4 is total Electronic Design principle schematic of the present utility model.Power switch 104 is received the direct voltage source B such as dry cell, rechargeable battery or solar cell class.104 the other end is given microprocessor 316 by regulator 401, and other system supply voltage V.

For every work of control survey mechanism, there are 4 can refer to the 106-109 that presses a button in the schematic diagram.Difference called after " measurement ", " zero clearing " " total price " and the Reset button, these buttons are bullet top formulas, make when being pressed voltage V(by among among the resistance R 1-R4 about resistance) and ground between form the loop, produce command signal thus, be sent on the microprocessor 316 by circuit.

Microprocessor is accepted signal from measuring system 402 to measure calculating by the lead 315 of drawing of stack circuit.After obtaining measured value and unit price, be stored in the memory element (not marking among the figure) such as depositing storehouse by microprocessor 316.When calculating total price, take out the numerical value that is stored in the memory element successively, go out total price with these numerical evaluation.

The detailed structure of microprocessor by known technology as can be known.

Fig. 5 is the operational flowchart of expression the utility model when measuring a thin type or linear article.After pressing " power switch " 104, complete machine starts, and the unit price storer is opened.Can import unit price by hand on keyboard 105, and be presented on the liquid crystal display, storer stores unit price simultaneously.By " measurement " button 106, the stack circuit is opened, and carries out surveying work again, shows simultaneously and store measurement values.At this moment judge whether measured value is correct, if customer requirement is measured one time again, can be by " zero clearing " button, at this moment eliminate measured value for the first time on memory space and the liquid crystal display, but do not eliminate the unit price value, measuring appliance is got back to the measurement state, so can carry out the second time measures, if after thinking that measurement is correct, by " total price " button, at this moment microprocessor can calculate and demonstrate total value again.

Push the Reset button.Can wipe on the display screen and reservoir in all values, powered-down simultaneously, it is represented with OFF in Fig. 1.

Claims (4)

1, a kind of pocket-size electronic linear measure longimetry valuation instrument, this instrument comprises:

(1) microprocessor, it comprises stack circuit that calculates measured value and the multiplication circuit that calculates total price;

(2) measuring mechanism, it comprises a measuring wheel at least; And connect microprocessor draw lead 315;

(3) keyboard input mechanism, it comprises several unit price enter keies; And the circuit 404 of connection microprocessor;

(4) display device, it is a kind of electronic console, this display device also comprises the display logic circuit that connects microprocessor.

2, pocket-size electronic linear measure longimetry valuation instrument as claimed in claim 1, it is characterized in that: described measuring mechanism also comprises at least one pinch wheels.

3, pocket-size electronic linear measure longimetry valuation instrument as claimed in claim 1, it is characterized in that: described microprocessor also comprises a signed magnitude arithmetic(al) circuit and a multiplication and division computing circuit.

4, pocket-size electronic linear measure longimetry as claimed in claim 1 valuation instrument is characterized in that: this instrument is located at a size and shape and can makes in the shell in its one hand that is held in a people.

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