JPS6023682Y2 - electronic scale - Google Patents

Description

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

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

This scale has graduations formed at predetermined intervals on a plate, and when using this scale to actually measure the length of an object to be measured or to draw a line segment of a predetermined length, it is necessary to It is necessary to select the position of the desired length from among the scales formed on the plate.

Also, when creating a table using this scale, for example, it is necessary to use this scale to mark each place on the table where vertical lines should be drawn, so if you accidentally mark the wrong place, must go through the tedious task of erasing the mark at that location and then marking the correct location again.

The present invention was developed in view of the above circumstances, and by displaying the scale position of the desired length using an electronic display means, it is possible to eliminate the trouble of selecting scales and to easily create tables, etc. The purpose is to provide scale.

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.
A scale 3 is formed by printing or the like at intervals of 1 (mm) over a length 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 connected to the slope 2, and further on the upper case 4 facing the scale 3 with this display section 6 in between. 1 (Cm
), a number 7 indicating the length is formed by printing or the like.

Also on the upper case 4 are a power switch 8, a mode switch 9 for specifying measurement mode "SCA" and division mode "dlv", decimal point key and numeric keypad 10, r ACJ
key 11JdivJ key 12, rcmJ key 13, rl
lJ key 14, “■” key 15 and rsTOPJ key 1
A key human power section 17 consisting of 6 is formed.

The liquid crystal display device 5 has an electrode configuration as shown in FIG. 2, and has 151 rod-shaped electrodes 18 for marks at positions corresponding to each scale 3, and the length is displayed as a numerical value in the lower right part of the figure. A segment electrode 19 representing the unit rcmJ, a character electrode 20 representing the unit rcmJ, and a character electrode 21 representing the division mode "divJ" are formed, respectively, and are provided with predetermined wiring so that they can be selectively driven and displayed by a circuit operation described later.

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

In FIG. 3, reference numeral 22 denotes a control section, which controls the arithmetic/storage section 23 according to the key manual data and key operation signals given from the key manual section 17, and also sends a reset signal R1, an addition signal U, a subtraction signal U, and a reset signal to the counter 24. Stop signal S
Output.

Further, 25 is a timing signal generation circuit which supplies a timing signal to each circuit to the counter 24, for example, 0. A pulse signal φ1 having a hoe period is supplied.

This counter 24 is a 15-jo up/down counter.
While the addition signal U is input from the control section 22, the addition operation is performed using the pulse signal φ1 as a clock, and similarly, while the subtraction signal I is input, the subtraction operation is performed, and when the stop signal S is input, these counts are performed. Stop operation.

Further, the calculation/storage section 23 performs predetermined calculations and storage on the count contents of the counter 24 and the key manual data, and the results are sent to the decoder 26 as display data.

This display data is decoded by the decoder 26 and sent to the liquid crystal drive circuit 27, 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 mode switch 9 in the key power unit 17 is in the measurement mode and the power switch 8 is turned on,
A reset signal R is sent from the control section 22 to the counter 24, and the contents of the counter 24 are reset to "0".

The contents of this counter 24 are stored in the arithmetic/storage unit 23, then sent to the decoder 26, decoded, and provided to the liquid crystal drive circuit 27.

Then, predetermined electrodes of the liquid crystal display device 5 are selectively driven by the liquid crystal drive circuit 27.

That is, in this case, the leftmost rod-shaped electrode 18 in the liquid crystal display device 5 is selectively driven, a mark is displayed at the 0 (cm) position of the scale 3, and the segment electrode 19
is displayed as r O, Ocm J by the character electrode 20.

Note that the rod-shaped electrode 18 at the left end always continues to be displayed while the power switch 8 is in the on state.

Therefore, when measuring the length of an object to be measured (not shown) using this electronic scale 1, align the left end of the object to be measured at the 0 (cm) position on the scale 3, and press the Operate 15.

At this time, the addition signal U is given to the counter 24 from the control section 22, and the counter 24 receives the pulse signal φ with a period of 0.5%.
An addition operation is performed using 1 as a clock, and the counted contents are sequentially stored in the calculation/storage section 23.

The stored contents are decoded by the decoder 26 and sent to the liquid crystal drive circuit 27, and the liquid crystal display device 5 is given a predetermined drive signal.

That is, in the liquid crystal display device 5, the rod-shaped electrodes 18 are sequentially driven according to the count of the counter 24.
Similar to the period of the pulse signal φ1, marks are sequentially displayed on the display section 6 while moving rightward from the 0 (cm) position every 0 seconds.

Next, the operator operates the rsTOPJ key 16 when this mark reaches the right end position of the object to be measured.

Then, a stop signal S is given to the counter 24 from the control section 22 to stop the counting operation, and a mark is displayed on the display section 6 at the right end position of the object to be measured as shown in FIG. 4a.

On the other hand, the count content of the counter 24 is displayed as a numerical value on the display unit 6, and in this case, the length of the object to be measured is r10. Ocm J is displayed.

In this way, the mode switch 9 in the key manual section 17
By setting the measurement mode to ``-'' key 15, ``off'' key 14, and rsTOPJ key 16 as appropriate, the desired length position is indicated by the mark display, and the length is displayed as a numerical value. be.

Next, the function when the mode switch 9 is set to the split mode in the key manual section 17 will be explained.

For example, to create a table, 4 (cm), 6 (Crn
), 9 (c+n), first operate the keys ``4'', ``α'', and ``minister'' using the numeric keypad 10, the rcmJ key 13, and the ``giant'' key 15.

The control section 22 sends a control signal to the calculation/storage section 23 based on these key operation signals, and the numerical data "4" is stored in the calculation/storage section 23.

This numerical data is then decoded by the decoder 26, and its output is sent to the liquid crystal drive circuit 27.

The liquid crystal drive circuit 27 sends a predetermined drive signal to the liquid crystal display device 5, and the liquid crystal display device 5 displays the scale 3 at 0 (cm
) and 4 (cm) are selectively driven and displayed as marks.

Then, when the key operation of r 2 J rcmJ r C>J is performed, the numerical data "4" stored in the calculation/storage unit 23 and the numerical data "2" input by the current key operation are added, The numerical data of the addition result “
6'' is sent to the decoder 26.

Thereafter, the same operation is performed, and on the display section 6, the scale 3 is 0 (
Marks are displayed at positions 4 (c, ), 6 (cm).

Furthermore, when the r3JrcmJ key is operated, the same operation as described above is performed, and as a result, the display unit 6 displays the scale 3 of 0 (cm), 4 (cm), 6 (cm), and 6 (cm) as shown in FIG.
A mark is displayed at position 9 (crn).

Note that these displays are performed by rAcJ in the key human power section 17.
It remains displayed until the key 11 is operated.

In this way, when the mode switch 9 is set to the split mode, it is possible to sequentially display marks at the positions of the specified length by the above-described key operations.

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.

Further, in the above embodiment, the scale 3 is formed on the upper case 4, but it may be formed on the display section 6 by printing or the like, and furthermore, the entire scale may be displayed electronically on 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 an electronic display means such as a light emitting diode or an electrochromic display device, and other configurations may also be used without departing from the gist of the present invention. Various changes are possible.

As described in detail above, the present invention indicates the desired length position by lighting up the indicator formed for each predetermined unit length, and when the measurement mode is set by switching the mode switch, the predetermined The display body is moved left and right by operation, and the display body at a desired length position is lit to indicate the position, and the length of the position is displayed as a numerical value.

Therefore, if the electronic scale of the present invention is used when measuring the length of an object to be measured, for example, the length of the object to be measured can be easily recognized.

In addition, when the split mode is set by switching the mode switch, the position of each length can be indicated by the above display by sequentially inputting numerical values for multiple arbitrary lengths using the specified keys. becomes.

Therefore, if the electronic scale of the present invention is used when creating a table, for example, it has an excellent effect that the position of the vertical line on the table can be easily recognized.

[Brief explanation of the drawing]

FIG. 1 is an external view of an embodiment of the present invention, FIG. 2 is a diagram showing the electrode structure of a liquid crystal display device 5 of the same embodiment, and FIG. 3 is a block diagram showing the circuit structure of the same embodiment. 4a and 4b are state diagrams for explaining the functions of the same embodiment. 1...Electronic scale, 3...Graduation, 5
......Liquid crystal display device, 6...Display section, 9
......Mode switch, 17...Key human power section, 18...Rod-shaped electrode, 22...Control section, 23...Calculation/memory Part, 24...
-Counter, 25...timing signal generation circuit, 26...decoder, 27...liquid crystal drive circuit.

Claims (1)

[Scope of utility model registration request] It is equipped with a display body provided for each predetermined unit length, and an instruction means for instructing to newly display the display body at a position moved an arbitrary distance from the position where the display body is fully displayed. An electronic scale that displays any of the above display elements.