JPS61129525A - Indication recording device - Google Patents

Abstract

PURPOSE:To obtain the titled device which has an optional scale for an optional input signal range by providing a scale setting means in addition to a range setting means and performing scale arithmetic operation. CONSTITUTION:An input signal selected by an input switching means is passed through an amplifier and a variable gain amplifier successively and converted by an A-D converter into a digital signal, which is processed by an arithmetic means 3 as specified, so that a display means makes a digital display and a recording means performs analog recording and digital printing. Further, a lower limit range setting means 41 which sets the lower limit of the input signal, an upper limit range setting means 42 which sets the upper limit x2 of the input signal, a lower limit scale setting means 43 which sets the lower limit value y1 of a scale, and an upper limit scale setting means 44 which sets the upper limit value y2 of the scale are provided. Those set values x1, x2, y1, and y2 and an optional measurement signal (x) from the A-D converter, etc., are inputted to the arithmetic means 3, which performs specific arithmetic processing to generates an output signal (y).

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Field of the Invention The present invention relates to an instruction recording device for recording instructions of measurement input signals such as voltage and temperature.

(2) Prior art Conventionally, general analog recorders have a range of O to 101 per recorder.
The constants of the internal circuit were determined and the scale was limited, such as for 1V input or 0 to 1200°C.

For this reason, there is a need for a device that uses arithmetic means such as a microcomputer to indicate and record many different input signals on different scales.

(3) Purpose of the Invention In view of the above points, the purpose of the present invention is to provide an instruction recording device that can set an arbitrary scale for an arbitrary input range.

(4) Summary of the Invention This invention comprises a lower limit range setting means for setting the lower limit taX+ of an input signal, an upper range setting means for setting the upper limit value x 2 of the input signal, and a manual mechanism for setting the lower limit value Y1 of the scale. a lower snout limit scale setting means, a means for setting the superior upper limit value Y2, a scale setting means, these set values X1, X2, Y1, Y2, and the measurement signal X.
2-Yl-(X-X+)+Y+2-XI.

(5) Embodiment of the Invention FIG. 1 is an explanatory diagram showing an embodiment of the invention.

In the figure, 1 represents a plurality of measurement input signals e1.1
. . ., an input switching means for sequentially switching and selecting en, A1 is an amplifier for amplifying the output of the input switching means 1,
A2 is a variable gain amplifier that has a plurality of resistors and a plurality of switches S in its feedback circuit and switches the gain for amplification; 2 is an A-D converter that converts the output of the variable gain amplifier A2 into a digital signal; 3 is an arithmetic means such as a microcomputer that performs arithmetic processing and other processing in accordance with the setting values etc. of the setting means 4, and causes the display means 5 and the recording means 6 to instruct and record. In addition, input switching means 1, A-
Control such as gain switching of the D converter 2 and the variable gain amplifier A2 is performed by the calculation means 3.

That is, the input signal selected by the input switching means 1 is sequentially converted into a digital signal by the A-D converter 2 via the amplifier A+ and the variable gain amplifier A2, and is subjected to predetermined calculation processing by the calculation means 3. Digital display by display means 5, recording means 6
Analog recording and digital printing are performed.

Next, details of the setting means 4 and calculation means 3 for setting an arbitrary scale range to an arbitrary measurement input range will be explained with reference to FIG.

In the figure, 41 is a lower limit range setting means for setting the lower limit 11X+ of the input signal, and 42 is the upper limit value of the input signal x 2
43 is a lower limit scale setting means for setting the lower limit value Y1 of the scale; 44 is an upper limit scale setting means for setting the upper limit 111Y2 of the scale; these set values X+, X2, Y1, Y2 ．． An arbitrary measurement signal X from the A-D converter 2 or the like is input to the calculation means 3, and is subjected to predetermined calculation processing as shown in the following equation, and can be taken out as an output signal Y.

2-YI Y = −(X −X + ) + Y +
(1) 2-XI The settings of the set values x1, x2, Y1, and Y2 are performed using the setting means 4, such as a numeric keypad, with reference to the display means 5 of FIG. 1, for example.

In other words, ×1 to ×2 is the input range (range, Y1 to Y
2 is a scale, and for example, as shown in FIG. 3, any mV input range can be made into a scale of any Kg range. Range x1 to x2 is -1.5 to 1.4
In (V), it is also possible to set the scale Y1 to Y2 to 9 from 1 to 10. It is also possible to use scales for temperature, etc.

The output from the calculation means 3 obtained in this way can be digitally displayed on the display means 5 and digitally printed by the recording means 6.

Note that the range *i* for converting the input signal into % is X-XI X'--X 100 (%) ... (2) 2
-XI, and the scale operation to convert it to a predetermined scale is: X' Y - (Y 2- Y + ) -+ Y +・
-(3) It is given by X2-XI, and this equation (3) is the same as equation (1).

In other words, equation (1) can be considered to be a range calculation followed by a scale calculation.

The output of this equation (2) may be used for analog recording by the recording means 6. In addition, variable gain amplifier A2
The gain of is selected to be optimal for the input signal.

Also, if the display and print digits are, for example, 5 digits, the range x
If 1 to x2 is set to -1 to +1 (V) and the scale setting is the same as the range setting, so if it is not set, the number of digits after the decimal point may be fixed to 4 digits, such as 1.2345.

However, when the range x1 to x2 is -1 to +1 (V) and the scale Y1 to Y2 is 0.0 to 1000.0°C, if the decimal point is fixed at 4 digits, the upper digits are I can't get a proper display. In this case, the decimal point position is processed by the calculating means 3 and outputted so that it becomes a position where the maximum number of digits after the decimal point can be obtained from the scale setting value. For example, in the case of O1O to 1000.0° C., if up to 5 digits can be displayed or printed, one decimal place can be displayed or printed, and if up to 6 digits can be displayed or printed, up to 2 decimal places can be displayed or printed.

(6) In addition to the effect range setting means of the invention, a scale setting means can be provided,
Instructions can be given and recorded.

[Brief explanation of the drawing]

1 and 2 are configuration explanatory diagrams showing one embodiment of the present invention, and FIG. 3 is an explanatory diagram of calculations. 1... Input switching means, 2... A-D converter, 3
...Arithmetic means, 4.41.42.43.44...
Setting means, 5... Display means, 6... Recording means,
A1...Amplifier, A2...Variable gain amplifier,
S...Switch

Claims (1)

[Claims] 1. Lower limit range setting means for setting the lower limit value X_1 of the input signal, upper range setting means for setting the upper limit value X_2 of the input signal, and lower limit scale setting means for setting the lower limit value Y_1 of the scale. , upper limit scale setting means for setting the upper limit value Y_2 of the scale, and these set values X_1, X_2, Y_1
, Y_2, and the measurement signal X to [(Y_2-Y_1)/(X_2-X_1)](X-X
_1) A calculation means for calculating +Y_1, and an instruction recording device for recording an output signal of the calculation means. 2. The calculation means calculates the scale setting values Y_1, Y_
2 has a different decimal point position from the range setting values X_1 and An instruction recording device according to claim 1, characterized in that: