JPS59150311A - Methods of indication and apparatus for indicating measured data - Google Patents

Abstract

PURPOSE:To obtain high-precision indication and facilitate reading of data by indicating by numerical figures all digits excepting ones below the reference digit and indicating with quantities other than the numerical figure values below the reference digit. CONSTITUTION:A detector 1 is composed of main scale 2 installed apart with constant distances in an area of a length measuring unit allowing free relative motions, indexing scale 3, each 2, photo-diodes 4 positioned opposedly between them and photo-transistor 5. An indicating apparatus 21 includes the 1st data indicating unit 27 as a numerical figure indicating unit constructed with 7-segment indicating elements of each digit excepting the smallest digit, the 2nd data indicating unit 28 as a non-numerical indicating unit constructed with bar-graph indicating elements of the smallest digit and indicating unit 26 provided with a direction indicating unit 26 and driving circuits 23-25.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and a display device for displaying measurement data, particularly fluctuation data.

Generally, in the field of measuring instruments, measuring instruments that digitally display the dimensions of an object to be measured are known.

This device is used in many fields because it is highly accurate and easy to read.

However, due to the high resolution, there are the following operational problems.

(2) For example, when the minimum digit is set to 1/1000 m, the displayed numerical value of the minimum digit changes drastically due to fluctuations in measuring force, vibrations caused by the working environment, etc., and may be difficult to read. In particular, 1
When a digit number is formed by a 7-segment display element, it is very difficult to know its antilogous number. For example, when the display changes from "1" to "7".

■ Similarly, if the minimum digit is 1/1000 m, depending on the object to be measured, it may not necessarily be 1/1000 m'! In many cases, it is not necessary to measure. As a measuring instrument, its range has been expanded due to versatility, but
Depending on the mode of use, data up to 1/100III is often sufficient. However, if all numbers are displayed in the same way, a problem arises in terms of work in that reading ranges vary from person to person.

On the other hand, if the minimum digit is fixed to 1/100 in the temporary format, there is a problem that the influence of quantization error is too large.The purpose of the present invention is to focus on such operational problems and It is an object of the present invention to provide a method and display device for displaying measurement data that displays accuracy and allows easy reading of the displayed data.

Therefore, the display method of the present invention displays each digit of the measured data as a number, excluding those below the reference digit, and displays the values below the reference digit as a quantity other than numbers. The object is to make it easy to read data up to the lower digits even if there is a problem.

Further, the display device of the present invention includes a display device in which each digit except the smallest digit is formed as a numeric display portion and the smallest digit is formed as a non-numeric display portion, a drive circuit that drives the numeric display portion, and the non-numeric display portion. It is an object of the present invention to provide a display device that has a configuration including a drive circuit that drives a display section, and has a highly accurate display and is easy to read data.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 shows the overall circuit configuration of the length measuring device of this embodiment. In the figure, a detector 1 includes a main scale 2 and an index scale 3, which are mounted at a certain distance apart from each other at parts of a length measuring device that are moved relative to each other, and two light emitting diodes 4 and a photodiode, which face each other with these scales in between. It is composed of a transistor 5. Main scale 2
A lattice strip is formed in which light-transmitting portions and light-blocking portions are repeatedly arranged at the same pitch along the direction of relative motion. Further, the index scale 3 is provided with two lattice stripes 3A and 3B similar to the index scale 3. These trellises! 3A, 3B are 90C
They are arranged with a phase difference of ''.

Therefore, for example, when the main scale 2 moves in one direction, the amount of light passing through the index scale 3 changes, and this change is detected by the phototransistor 5. At this time, since the gratings 3A and 3B of the index scale 3 are out of phase by 90 degrees, the phototransistor 5
It is detected as a sine wave signal with a 0° phase shift. These detection signals are amplified by the Zorianzo 11, then subdivided by the dividing circuit 12, and sent to the reversible sorting circuit 13.

Here, the processing of the reversible sorting circuit 13 will be briefly explained with reference to FIG. The signal input to the reversible selection circuit 13 is
Each is based on a Schmitt circuit, 1μ on a scale of 2.3.
It is converted into rectangular waves a and a' corresponding to the relative movement amount of m. At this time, a rectangular wave i, which is an inversion of the rectangular wave a, is created from the rectangular wave a.

The rectangular waves a and a are further converted into palm-shaped waveforms a and b by a differentiating circuit. On the other hand, the waveform a' is the waveform
It is superimposed on waveform b to form a waveform (a'+b), (a'11). These waveforms (a'+b), (a'+b
) are each cut off at the level indicated by the dotted line and output as multiple e-), which are then shaped into a rectangular wave /4' pulse d, d with a constant width by a monostable multi-circuit. is,
The signal is sent to the addition/subtraction control circuit 14. When the pick and scale 2 are moving to the left in Fig. 1, No. e cis d is sent to the addition/subtraction control circuit 14, and when scale 2 is moving to the cloth in Fig. 1, the 9 rus - is sent to the addition/subtraction control circuit 14. Sent.

In the addition/subtraction control circuit 14, when the above-mentioned . and cis d is given, when the tsumashi scale 2 is moving to the left in FIG. When the tsumashi scale 2 is moving to the cloth in FIG. 1, it works as a subtraction.

Here, the addition/subtraction control circuit 14 outputs a signal corresponding to the addition/subtraction operation, and the counting circuit 15 outputs a signal corresponding to the addition/subtraction operation.
The operation of the Callan decimal counting circuit 15 of the addition/subtraction control circuit 14 is controlled by a control device 16. Control device 16
A setting device 17 having various switches, such as a zero set switch and a hold switch, is connected to. Thereby, the control device 16 sets the value of the counting circuit 15 to zero when the zero set switch of the setting device 17 is operated, and holds the value of the counting circuit 15 when the hold switch is operated. On the other hand, the values t and b measurement data of the counting circuit 15 are sent to the multiplexer circuit 18 . The measurement data sent to the multiplexer circuit 18 is sent to the output circuit 1
9 and is printed out by the printer 20, separated into digits of 1/1000 m or less and digits of 1/100 m or more, and sent to the display device 21 together with the signal from the addition/subtraction control circuit 14.

The display device 21 has a scale of 1/10 for each digit except the smallest digit.
a first data display section 27 as a 5-digit number display section in which each digit of 0 m or more is configured by a 7-segment display element;
A second non-numerical display section in which the smallest digit pi/1000+++m is formed by a pergraph-like display element.
Data display section 28 and +.

a display device 22 having a direction display section 26 that displays either -, and a drive circuit for displaying a + or - mark on the direction display section 26 of the display device 22 in response to a signal from the addition/subtraction control circuit 14; 23, and the data of 1/100 or more from the multiplexer circuit 18 is sent to the display 2.
The drive circuit 2 displays numbers on the first data display section 27 of 2.
4 and 1/10 from said multiplexer circuit 18
00 I! A drive circuit 2 for displaying data below II as a per graph on the second data display section 28 of the display 22.
It consists of 5.

Next, the operation of this embodiment will be explained. Now, when the main scale 2 and the index scale 3 move relative to each other in connection with the measurement operation, the amount of light passing through the index scale 3 changes, and this change is detected by the phototransistor 5. The signal detected by the phototransistor 5 is
! After being amplified by the rear puffer fish 11, the signal is subdivided by the dividing circuit 12 and sent to the reversible sorting circuit 13. The signals sent to the reversible sorting circuit 13 are counted by the addition/subtraction control circuit 14 after being processed for direction determination. Then, in the counting circuit 15, the addition/subtraction control circuit 14
After the relative movement amount measurement data of the scale 2°3 is calculated from the count number, it is sent to the multiplexer circuit 18. The measurement data sent to the multiplexer circuit 18 is printed out by the printer 2o via the output circuit 19, and the reference digit of the measurement data is 61/1.
The data of each digit excluding the 000■ digit and below is displayed as a number on the first data display section 27 of the display 22 via the drive circuit 24, and the data of 1/1000■ digit and below of the measurement data is displayed by the drive circuit 25. The second data display section 2 of the display 22 via
8 as a graph.

At this time, + or - is displayed on the direction display section 26 of the display 22 in accordance with the signal output from the addition/subtraction control circuit 14 in accordance with the moving direction of the scale 2.

Therefore, the display 22 shows the measurement direction as well as 1/
Data of 100 tan or more is numerical, 1/1000w
The following data is displayed as a par graph, so 1/
Values up to 1000m can be easily read.

Therefore, according to this embodiment, the first data display section 27 displays each digit except the smallest digit of the data display section as a number, and the second data display section 28 displays the smallest digit as a graph. The first data display section 27 displays each digit of the measurement data except for the reference digits and below, and the 27'-event display section 28 displays the values of the measurement data below the reference digit as a par graph. Even if the lower digits of the measurement data tend to change due to fluctuations in the measuring force or vibrations caused by the working environment, the data up to the lower digits can be read relatively easily. Therefore, if the standard digit is 1/1000 m, the measurement data can be read at 171000 m''!, so there is no operational problem such as individual differences in the reading range, and the influence of quantization errors is eliminated. I can do it.

In addition, in implementation, the second data display section 28 may be configured as shown in FIG. 3 or FIG. 4 in addition to the par graph described in the above embodiment. What is shown in Figure 3 is 1
Zero light emitting elements are arranged in a straight line as dot marks. Furthermore, the bar graph shown in FIG. 4 is constructed in an annular shape. In short, as long as the smallest digit can be expressed as a quantity other than a number, the format does not matter.

Further, in the above embodiment, the reference digit was set as 1/10100O+, but it is preferable to set the reference digit as a reference, which is likely to fluctuate depending on the type of measurement data.

Furthermore, although the above-mentioned embodiment shows an example in which measurement data regarding dimensions is displayed, measurement data such as weight or temperature may also be displayed.

In summary, according to the present invention, it is possible to provide a measurement data display method and a display device that can display measurement data with high precision and that can easily and accurately read the displayed data.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is an explanatory diagram showing the operation of a reversible selection circuit, and FIGS. 3 and 4 are front views showing modified examples of the display. 22...Display device, 24.25...Drive circuit, 27.
...First data display section as a numeric display section, 28...
A second data display section as a non-numeric display section. Figure 1◆3B 3A 17 II15 Setting device 6 3゛. , 4.1 and 1 1112 13 14 15 18 pso minutes J
Reversible M IU'J and Cyan Ro
Anal route IWSSI ``'Chiguchi route full thousand seven degrees bus to 1 wake ■... 22 23 24 25 +!-'ri, 11 pulla 1 71--1 7- ■?6 27th layer 21371

Claims (1)

[Scope of Claims] (1) A method for displaying measurement data, characterized in that each digit of the measurement data excluding the reference digits and below is displayed as a number, and the values below the reference digit are displayed as amounts other than numbers. . (2. According to claim 1, a method for displaying measurement data characterized by displaying values below the reference digit as a linear or circular pargraph. (3) Claims A method for displaying measured data according to item 1, characterized in that the value below the reference digit is displayed as the quantity of the tod mark. (4) Each digit except the minimum digit is used as a numeric display part, and the minimum digit is a non-standard digit. 1. A measurement data display device comprising: a display formed as a numeric display section; a drive circuit that drives the numeric display section; and a drive circuit that drives the non-numeric display section.