JPS6023681Y2 - electronic scale - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic scale that displays a predetermined length position using electronic display means.

Usually, a scale or the like is used to measure the length.

This scale has graduations formed on a plate at predetermined intervals, and when actually measuring the length of an object to be measured, a scale corresponding to the length of the object to be measured is formed on the plate. The selected scale is selected and the length is measured.

Also, when drawing a line segment of a predetermined length using this scale, it is necessary to select a scale at a desired length position from among the scales formed on the plate, as described above.

Therefore, a so-called mechanical scale formed on an object having graduations at predetermined intervals cannot escape the trouble of selecting a desired length position from among the graduations during measurement.

On the other hand, there is also a product that has the above-mentioned mechanical scale formed on the upper case of a small electronic calculator, but this is also simply a mechanical scale formed on the upper case.
Length measurements suffer from the same deficiencies as the mechanical scales mentioned above.

The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide an electronic scale in which the scale position of a desired length is indicated by an electronic display means, thereby eliminating the trouble of selecting a scale. shall be.

Hereinafter, one embodiment of the present invention will be described in detail.

In FIG. 1, reference numeral 1 denotes the electronic scale main body of the present invention, and a slope 2 having an appropriate angle with respect to the bottom surface is formed on the longitudinal side of the main body 1. For example, 15
A scale 3 is formed by printing or the like at intervals of 1 (myr) over a range of (cm).

A display section 6 consisting of a liquid crystal display device 5 is formed at a position close to the scale 3 of the upper case 4 connected to the slope 2, and the upper case 4 faces the scale 3 with the display section 6 in between. On the top, 1 (c
A number 7 indicating the length is formed for each m) by printing or the like.

Also, on the upper case 4 are a power switch 8, a bank key 9, a forward key 10, and a stop key 5TO.
A key human power section 12 consisting of PII is formed.

The liquid crystal display device 5 has an electrode configuration as shown in FIG. 2, and has 151 rod-shaped electrodes 13 for marks at positions corresponding to each of the scales 3, and the length is displayed as a numerical value at the lower right portion of the figure. A segment electrode 14 indicating the unit "α" and a character electrode 15 indicating the unit "α" are formed, respectively, and predetermined wiring is provided so as to be selectively driven by a circuit operation described later.

Next, the circuit configuration of the scale 1 will be briefly explained.

In FIG. 3, reference numeral 16 denotes a key discrimination circuit, which outputs a reset signal R when the power switch 8 is turned on in the key manual section 12, and outputs a reset signal R to the lock key 9, forward key rotation 10, and stop key s'rop 11. Then, the subtraction signal D1, addition signal U, and stop signal S are outputted to the counter 17, respectively, until the next key operation is performed.

Further, 18 is a timing signal generation circuit which supplies a timing signal to each circuit and also outputs a timing signal to the counter 17 such as 0. A pulse signal φ1 of the hoe period is sent.

The counter 17 is a 150-decimal up/down counter, and performs an addition operation using the pulse signal φ1 as a clock while the addition signal U is input, and similarly performs a subtraction operation while the subtraction signal R is input.

Furthermore, when a stop signal S is input, the counting operation is stopped.

The count contents of the counter 17 are decoded by the decoder 19 and sent to the liquid crystal drive circuit 20, and predetermined electrodes of the liquid crystal display device 5 are selectively driven.

Next, the operation of this embodiment configured as described above will be explained.

First, when the power switch 8 of the electronic scale 1 is turned on, a reset signal R is sent from the key discrimination circuit 16 to the counter 17, and the contents of the counter 17 are reset to "0".

Therefore, the content "0" of the counter 17 is sent to the liquid crystal drive circuit 20 via the decoder 19, and the liquid crystal drive circuit 20 selectively drives a predetermined electrode of the liquid crystal display device 5.

That is, in this state, the rod-shaped electrode 13 at the left end of the liquid crystal display device 5 is selectively driven, a mark is displayed at the O(3) position of the scale 3, and the segment electrode 14 and the character electrode 15 are used to display rO, ocmJ, and the like. Is displayed.

In addition, the rod-shaped electrode 13 at the left end and the character electrode 15 indicating the unit
continues to be displayed while the power switch 8 is in the on state.

Therefore, when measuring the length of an object (not shown) using this electronic scale 1, align the left end of the object to the 0 (cm) position on the scale 3, and press the forward key 10 times. operate.

At this time, the addition signal U is applied from the key discrimination circuit 16 to the counter 17, and the counter 17 performs an addition operation using the pulse signal φ1 having a period of 05 seconds as a clock.

In the liquid crystal display device 5, the rod-shaped electrodes 13 are sequentially driven according to the contents of the counter 17, and the display section 6 displays a 0 (
cm) The marks are sequentially displayed while moving to the right from the position.

Next, the operator presses the stop key s'rop11 when this mark reaches the right position of the object to be measured.

Then, a stop signal S is given to the counter 17 from the key discrimination circuit 16 to stop the counting operation, and the display section 6 displays the fourth
As shown in Figure a, the mark is displayed up to the right end of the object to be measured.

On the other hand, the count of the counter 17 is displayed as a numerical value on the display section 6, and in this case, "rlo, 00", which is the length of the object to be measured, is displayed.

Next, in order to continue measuring an object to be measured which is shorter in length than the aforementioned object to be measured from the display state shown in FIG.

Then, a subtraction signal is applied from the key discrimination circuit 16 to the counter 17, and the counter 17 performs a subtraction operation using the pulse signal φ1 as a clock.

Therefore, in this case, the mark moves leftward and is displayed sequentially on the display section 6, and the operator presses the stop key 5 when the mark reaches the right end position of the object to be measured.
Operate TOP11.

At this time, the display state of the display unit 6 is as shown in FIG. 4, and the length of the object to be measured is displayed as r4.8 cmJ.

Further, when drawing a line segment having a length of, for example, 3 (cm) using the electronic scale 1, the forward key turns 10 and the bank kilometer 9 keys are operated in the key manual section 12 as appropriate, and the display section 6 displays r 3. ．． When Ocm J is displayed, operate stop key 5TOPII.

Then, as a result of the above-described operation, a mark is displayed at the position 3 (c71) on the display section 6, so that the operator can easily recognize the position 3 (o).

In this way, forward key times 10, back key opening 9,
By appropriately operating the stop key 5TOP11, the desired length position is indicated by the mark display,
Its length is displayed as a number.

In the above embodiment, the scale 3 is provided on the slope 2 of the electronic scale 1.
However, the same effect can be obtained even if only the display section 6 is formed on the longitudinal side of the electronic scale 1 without forming the scale 3.

Further, in the above embodiment, the mark is moved left and right by key operation, but the mark may be moved left and right by operation of a two-contact switch such as a slide switch or a lever switch.

Furthermore, in the above embodiment, the clock of the counter 17 is set to 0. Using the pulse signal φ1 of the hoe cycle, the mark displayed on the display section 6 is set to 0.5If! J), but the present invention is not limited to this, as long as the mark is moved and displayed at a speed that is easy for the operator to recognize.

Furthermore, instead of displaying this mark only at a desired length position, all marks from the 0 (Crn) position to the desired length position may be displayed.

Further, in the above embodiment, the scale 3 was formed on the slope 2, but
The scale may be formed on the display section 6 by printing or the like, or the entire scale may be displayed electronically by the liquid crystal display device 5.

In addition, in the above embodiment, the liquid crystal display device 5 is used as the display section 6.
However, the desired length position may be displayed using electronic display means such as a light emitting diode or an electrochromic display device.

Further, the shape of the mark, the overall length of the scale, and the shape of the electronic scale 1 in the above embodiments are not limited to the shapes shown in the drawings, and can be changed in various ways without departing from the gist of the present invention.

As described in detail above, the present invention provides an indicator in which a desired length position is provided for each unit length according to a predetermined operation.

By instructing the length using a numeral and displaying the length of the indicated position as a numerical value, it has an excellent effect that the desired length position and the numerical value of the length can be easily recognized when performing measurement. .

[Brief explanation of the drawing]

FIG. 1 is an external view of an electronic scale 1 which is an embodiment of the present invention, FIG. 2 is a diagram showing the electrode configuration of a liquid crystal display device 5 of the same embodiment, and FIG. 3 is a diagram showing the circuit configuration of the same embodiment. The block diagram and FIGS. 4a and 4b are state diagrams for explaining the operation of the embodiment. 1...Electronic scale, 5...Liquid crystal display device, 9 back key, 10...forward key, 11...stop key, 13... - Rod-shaped electrode, 17... Counter.

Claims (1)

[Scope of utility model registration request] It includes a display body provided for each predetermined unit length, a means for sequentially moving and displaying the display body, and a numerical display body for numerically displaying the distance traveled from a reference position of the display body moved and displayed by the means. Electronic scale.