JPH0418778B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a recording device, and more specifically, the present invention relates to a recording device that converts the magnitude of an analog input signal into a digital signal and records data according to the converted digital signal. The present invention relates to an improvement of a recording apparatus configured to record the magnitude of an analog input signal in an analog manner while moving a mechanism in a direction perpendicular to the feeding direction of recording paper.

[Prior Art] A type of recording device is described on pages 9 to 13 of Yokogawa Technical Report (Vol. 25, No. 4) published by Yokogawa Electric Corporation on December 20, 1981. As described, some devices are configured to digitally display the magnitude of analog input signals selectively output from a scanner and to record analog input signals in a dot pattern.

By the way, in such a conventional recording device, the measured value of the desired measurement range is divided into the effective recording width (0% to 100%).
%) was configured to record in the full width. For example, if the effective recording width of the recording paper is 250mm,
The minimum value of the measurement range is 0% (0%) near the left edge of the recording paper.
mm), the maximum value of the measurement range is near the right end.
It will be recorded to correspond to 100% (250mm). That is, for example, the temperature measurement range is 0℃~
When recording the thermocouple measurement value of 1600℃ on recording paper, 0℃ corresponds to 0% of the recording paper, so 1600℃ is used.
℃ will be recorded so that it corresponds to 100% of the recording paper, and from 1000℃ to 1600℃,
When recording 1500°C, 1000°C corresponds to 0% and 1500°C corresponds to 100%.

[Problems to be Solved by the Invention] Therefore, according to such a conventional configuration, when recording the magnitudes of a plurality of analog input signals, for example, MV ₁ to _{MV 4} , it is necessary to record the magnitudes of a plurality of analog input signals, for example, as shown in FIG. The recorded patterns P ₁ to _{P 4} intersect with each other,
There are drawbacks such as it is difficult to distinguish between multiple recording results and it is difficult to grasp the overall picture of the recording results. For example, in order to record the measurement range from 0℃ to 1600℃ with a width of 0 to 125mm, for example, 0% corresponds to 0℃.
This can also be achieved by setting a fictitious recording width so that 100% corresponds to 3200℃, but from 1600℃
3200°C is outside the measurement range and may cause confusion for the operator, which is not desirable.

The present invention has been made with attention to these points, and its purpose is to record the magnitude of an analog input signal in a desired measurement range at a desired position on recording paper with a desired recording width. It is an object of the present invention to provide a recording device capable of recording the magnitudes of a plurality of analog input signals without intersecting each other's recording patterns.

[Means for Solving the Problems] The present invention achieves the above object by converting the magnitude of an analog input signal into a digital signal, and in accordance with the converted digital signal, the recording mechanism is moved orthogonally to the feeding direction of the recording paper. In a recording device configured to record the magnitude of an analog input signal on recording paper in an analog manner while moving in a direction, a measurement value MV, a left end measurement value ML and a right end measurement value MR representing a measurement range, A means for setting and storing the left edge recording position PL and right edge recording position PR of the recording paper where these left edge measurement value ML and right edge measurement value MR are to be recorded, and left edge recording based on the left edge reference position stored internally in advance. Offset value OFS to position PL
A means for calculating and storing the distance from the leftmost recording position PL to the rightmost recording position PR, and a means for calculating and storing the distance from the left end recording position PL to the right position recording position PR as a span value SP.Based on these stored values, the calculation expressed by the following formula is performed. and means for calculating the recording position x of the measured value MV, x=[{(MV-ML)/(MR-ML)}SP]+
OFS is characterized in that it is configured to record the magnitude of an analog input signal in a desired measurement range at a desired position on the recording paper with a desired recording width.

[Example] Hereinafter, it will be explained in detail using the drawings.

FIG. 1 is a configuration explanatory diagram showing an embodiment of the present invention. In Figure 1, 1 ₁ ~ 1n is 3 mV ~
This is an input terminal to which analog input signals such as a 50V DC voltage, a resistance temperature detector circuit, and a thermocouple output signal are applied, and these analog input signals are amplified to a predetermined size via a multiplexer 2.
selectively added to. Note that as the amplifier 3, for example, a programmable gain amplifier whose gain is controlled in conjunction with the multiplexer 2 is used. Each analog input signal is amplified by this amplifier 3 so that the output signal becomes, for example, 0 to 2 V, regardless of the size of the measurement range. 4 is an A/D converter that converts the output signal of the multiplexer 2 amplified by the amplifier 3 into a digital signal, and the output signal is temporarily stored in the first memory 5. This data is linearized according to the type of input and stored as a signal for display and logging, and is also used as a signal for trend recording, for example, from 0 to 2500 in 0.1 mm steps to correspond to a width of 250 mm. Converted to a number and stored. Note that the analog section consisting of the multiplexer 2, amplifier 3, and A/D converter 4 is connected to other digital sections via a photocoupler. This allows the analog part and the digital part to be completely electrically isolated. A recording paper 6 is intermittently fed at a predetermined speed by a paper feeding mechanism 7 using, for example, a pulse motor. 8
is a drive circuit for the paper feeding mechanism 7. 9 is recording paper 6
This is a recording head that records multicolor dots in predetermined colors corresponding to an input signal on the recording paper 6. It is selectively driven by a drive circuit 10, and is driven by a recording head moving mechanism 11 using, for example, a pulse motor. When the recording paper 6 is stopped being fed in a direction perpendicular to the feeding direction, raster scanning is performed at a rate of, for example, 0.1 mm/step. As such a recording head 9,
Inkjet heads, wire dot heads, disposable pen heads, etc. are used. For example, an inkjet head, as shown in FIG.
The printer is constructed so that three primary colors (cyan C, magenta M, and yellow Y) can be recorded as dots at discrete intervals along the direction of movement of the recording head 9. The wire dot head is
As shown in FIG. 3, the ink ribbon 9A is fed along the feeding direction of the recording paper 6 and is dyed in multiple colors in the width direction. The ink ribbons 9 are arranged along the feeding direction and are selectively driven.
A dotting mechanism 9b having a plurality of dotting needles for transferring a predetermined color of A is used. The disposable pen head used is constructed so that a plurality of disposable pens with different ink colors can each record dots discretely at constant intervals along the moving direction of the recording head 9. Reference numeral 12 denotes a scanning circuit that sends out a signal for driving the recording head moving mechanism 11 and also sends out a digital signal related to the position of the recording head 9. The digital signal sent out from this scanning circuit 12 is temporarily stored in the second memory 13. is stored. Although this embodiment shows an example in which a common memory is divided and used as the first memory 5 and the second memory 13, independent memory may be used. Reference numeral 14 denotes an arithmetic control circuit using, for example, a microprocessor, which controls the operation of the entire recording apparatus. A memory 15 stores characters, symbols, etc. as dot patterns, and also stores a program for controlling the operation of the entire recording apparatus. A display 16 digitally displays information related to measurement, and is driven by a drive circuit 17. Reference numeral 18 denotes a keyboard for setting the operating mode of the device, type of input signal measurement range, desired recording range, desired recording position, alarm setting value, paper feed speed, etc. Data input from these keyboards 18 is temporarily stored in the third memory 20 via the interface 19. Note that this third memory 20 is backed up by a battery 21, and data is stored therein until it is updated. 22 is an input/output port;
23 is an alarm circuit for detecting a voltage drop in the battery 21, and P is a panel. Furthermore, when the recording head 9 reaches the end of the scan area of the recording head 9 or at least one end of the scan area of the recording head 9, an end signal is generated and the position data of the recording head 9 is reset. An end detection means is provided but not shown.

The operation of the device configured in this way will be explained.

First, prior to measurement, the keyboard 18 is operated to set measurement conditions and recording conditions for each analog input signal and store them in the third memory 20.

For example, connect an R type thermocouple to the nth input terminal and measure the temperature from 0℃ to 1600℃,
The measurement range of °C is shown in Figure 4, and the effective recording width is
When recording between 125mm and 250mm of 250mm recording paper, as shown in Figure 5, the third memory 20
Enter thermocouple "R" as the input signal type in the n-channel data setting area, and enter the leftmost measured value.
Enter 0°C as ML, enter 1600°C as the measured value MR on the right side, and enter 125° as the leftmost recording position PL.
Enter mm, and enter 250mm as the rightmost recording position PR. Then, the offset value OFS from the left end reference position LHP to the left end recording position PL is calculated using the data _D1 of the distance from the left end reference position LHP to the 0 mm position stored internally, and is stored in the third memory 20. Then, the distance from the left end recording position PL to the right end recording position PR is determined and stored in the third memory 20 as a span value SP. Thereafter, the measured value stored in the first memory 5 based on the following formula:
Calculate the recording position x for the MV.

x=[{(MV-ML)/(MR-ML)}×SP]+OFS Here, for example, if the measured value MV is 800℃,
The recording position x is 62.5mm+OFS. After applying position correction to the position data calculated in this way to record in the predetermined color assigned to each input terminal, color specification data is attached and the data is assigned to each position corresponding to the recording resolution. The data is temporarily stored in a predetermined area (for example, 2500 locations with a resolution of 0.1 mm steps) in the first memory 5. When correcting the position for recording in a predetermined color, it is necessary to add or subtract a phase difference signal from the reference element of each element of the recording head 9 that records the predetermined color assigned to each input terminal. Bye. Further, when recording, two or more colors may be mixed as necessary. Such calculations are performed every measurement cycle, and the recording head 9 is raster scanned once every measurement cycle to record the magnitude of each input signal in a predetermined color in analog dots, and then the position data in the memory 5 is stored. Reset.

With this configuration, the recording head 9
Determine the size of the desired measurement range of the analog input signal applied to each input terminal as the Dot patterns of predetermined colors corresponding to each can be recorded analogously at desired positions on the recording paper with a desired recording width. For example, as shown in FIG. 6, a plurality of analog input signals MV ₁ to MV ₄ can be recorded without the recording patterns P ₁ to _{P 4} intersecting with each other.

In the above embodiment, a multi-point, multi-color recording device has been described, but a multi-point, single-color recording device may also be used.

Furthermore, in the above embodiment, an example was shown in which the magnitude of an analog input signal selectively applied via a multiplexer is recorded in an analog manner using a recording head that performs dot pattern recording. A unique recording pen may be provided to perform continuous writing similar to a conventional pen recorder.

Further, the present invention can also be applied to a one-pen recorder.

[Effects of the Invention] As explained above, according to the present invention, the magnitude of an analog input signal in a desired measurement range can be recorded at a desired position on a recording paper with a desired recording width, and a plurality of analog A recording device that can record the magnitude of an input signal without causing recording patterns to intersect with each other can be realized.

[Brief explanation of drawings]

FIG. 1 is a configuration explanatory diagram showing an embodiment of the present invention;
2 and 3 are configuration explanatory diagrams showing specific examples of the recording head used in the present invention, FIG. 4 is an explanatory diagram of data setting of measurement conditions and recording conditions, and FIG.
The figure is an explanatory diagram showing an example of a memory that temporarily stores each data shown in Figure 4, Figure 6 is an example diagram of recording the magnitude of a plurality of analog input signals by the device of the present invention, and Figure 7 is an explanatory diagram showing an example of a memory that temporarily stores each data shown in Figure 4. FIG. 4 is a diagram showing an example of recording the magnitudes of a plurality of analog input signals. 1 ₁ to 1n...input terminal, 2...multiplexer,
3...Amplifier, 4...A/D converter, 5, 13, 1
5, 20...Memory, 6...Recording paper, 7...Paper feed mechanism, 8...Paper feed mechanism drive circuit, 9...Recording head,
10... Recording head drive circuit, 11... Recording head moving mechanism, 12... Scanning circuit, 14... Arithmetic control circuit,
16...Display device, 17...Display device drive circuit, 18...Keyboard, 19...Keyboard interface, 2
2...I/O port, P...Panel.

Claims (1)

[Claims] 1. Converting the magnitude of an analog input signal into a digital signal, and transferring the analog input signal onto the recording paper while moving the recording mechanism in a direction perpendicular to the feeding direction of the recording paper according to the converted digital signal. In the recording device configured to record the size of
and the rightmost measurements MR and these leftmost measurements ML
means for setting and storing the left edge recording position PL and right edge recording position PR of the recording paper where the right edge measurement value MR is to be recorded, and the offset to the left edge recording position PL based on the left edge reference position stored internally value OFS
A means for calculating and storing the distance from the leftmost recording position PL to the rightmost recording position PR, and a means for calculating and storing the distance from the left end recording position PL to the right position recording position PR as a span value SP.Based on these stored values, the calculation expressed by the following formula is performed. and means for calculating the recording position x of the measured value MV, x=[{(MV-ML)/(MR-ML)}SP]+
OFS: A recording device characterized in that it is configured to record the magnitude of an analog input signal in a desired measurement range at a desired position on recording paper with a desired recording width.