JPS5960222A - Pen recorder - Google Patents

Abstract

PURPOSE:To start recording at the same original point accurately all the time, by memorizing the amount of movement of recording paper from the starting to the end of recording, and unwinding the recording paper until the memorized value becomes zero. CONSTITUTION:An input signal is imparted to a servomechanism 3 through a preamplifier 2 from an input terminal 1. The servomechanism 3 comprises a comparator 4, an amplifier 5, a servomotor 6, and a position detector 7. A pen is driven by the rotation of the servomotor 6, and the corresponding position of the pen is detected by the position detector 7. The signal corresponding to the position is negatively fed back through a comparator 4. A microcomputer 11 is provided. In the process of reverse movement of recording paper, the number of pulses stored in a memory 14 is gradually decreased. When the number becomes zero, the supply of pulses to an output port 18 is stopped according to the program in a memory 15. At this time, the relative position of the pen with respect to the recording paper agrees with the position when the recording started. As a result, the recording paper can be accurately brought back to the original position.

Description

[Detailed description of the invention] The sA'lj is 1+ on the pen recorder.

In general, a pen recorder is used to record the input signal A on recording paper that is moved at a constant speed, thereby recording the waveform of the input signal over time. However, for example, in the case of a step response recording, it may be required to record a response waveform with a quadratic damping coefficient, and in that case, after recording the first waveform, It is necessary to return the recording paper to the 6α recording start point again and then start the next recording. At this time, in order to clarify the correlation of the image recording waveforms, the recording start point of each RT3 recording waveform is set to -:z'! r
,,J must be kept.

For this purpose, it is necessary to unwind the #'i recording paper to the first recording start position j, but in the past, the unwinding of the sheet was mainly done manually, and the position to be returned was visually confirmed. However, when the recorded paper is long, or when it is rewound frequently,
These sweeps are extremely troublesome. Also, when rewinding, in order to avoid staining the record m1, the pen must be removed from the record paper, which makes it difficult to align the pen with the point added at the start of re-recording, and it also takes time. do.

The object of this invention is to simply and reliably move fe1 when returning the recording paper to the same starting origin for each recording.

In this invention, when recording one waveform, the movement of the recording paper from the start of recording to the end of recording is stored in memory, and the recording paper is rewound until the memory value becomes zero. 1) It is characterized by the following.

An actual example of this invention will be explained with reference to the drawings. 1 is the input terminal, and the input signal seen here is the prefix +11
The servo controller 4'1M3 is used to move the pen according to the magnitude of the input signal, for example, the ratio φy
device 4 + "J--ho js4+i W: 45 r Naho motor 6 * 4s'/, h' + r, j++ is formed by the detector 7, etc. The rotation of the servo motor 6 causes the pen to move μJ (+iih; , the position of the pen corresponding to the drive at this time is detected by the detector 7, and the negative number 18 corresponding to the adhesion is returned via the comparator 4. Depending on the size of the input pen, the size of the input size 11 will be 17, and the size will be %jA+j.

8iji++4 record eyebrow (, 9k, I'n'l 61j pen. 10 F, L aL: Nail Jll: A feed motor (for example, a step motor) for reversibly transporting 8, and its rotation? 47 IR As shown in the notation, it is determined to be λ゛(.

Above 41. There is no particular difference between this and a regular pen recorder. According to the invention, a microcomputer 11 with a processing device mounted thereon is provided.

This is the central processing unit 12. - A clock oscillator 16 that generates pulses with a period of 16. Memory (RAM) 14゜hI fan 1 for storing the amount of recording paper transferred and the forward/reverse direction of the recording paper
A memory (ROM) that executes programs such as filling the ``14°'' of the transfer, switching between forward and reverse, setting the transfer speed, etc.
15A) (1; is completed by I. 16 is an operation switch to add points iii + f, l: j Fig-16A)
, consisting of a switch 16B for returning from the origin, 1711:
I for operation of each switch 16A, 16B) 1 (<I; i
``7 Input report given to f-z microcomputer 11, 18 is performance 3 from central processing unit +'V 12
1. C (output port from which a pulse of a predetermined frequency is output, 19H) The pulse from the output port 18 causes the remoter 10 to be driven by the frequency of that pulse?
Therefore the rotated lU-rudame screwdriver, 20r, I
It is a data bus.

In the above 4'7 configuration, the central processor VP 441P 12 first takes in the clock pulse from the clock oscillator 16, divides it into a frequency corresponding to the transport speed of the recording paper, and sends it from the output port 18 to the driver. Give to 19. Since a step motor is used as the feed motor 10, the feed motor 10 rotates at a speed corresponding to this frequency. On the other hand, the switch 16 for remembering the origin
4 is operated, and the transfer beam of 17 record A in the previous recording section which was recorded in the memory 14 with chopsticks is set and cleared to zero. In this state, the pen moves in the direction perpendicular to the direction in which the paper is transported in accordance with the input number 8 given to the input phantom 1. By this operation, the waveform of the temporal change of the manual force (i'i) is transferred from the origin A (g (', see Figure 2) to the recording paper 8 by ii+: e, j
It will be done.

To the right of this record, the pulses applied to the output port 18 are applied to the memory 14. The number of pulses is written @
As described above, this corresponds to the amount of paper 8 to be transported.

Therefore, when -th NC recording is completed and waveform #71 is recorded, the transfer length l of Fi+E i* #e up to that point will not be stored in the memory 14.

At this point, if you operate the home return switch 16B,
In accordance with the program based on the contents of the memory 15, a reverse rotation command is applied to the output port 18, and the feed motor 10 accordingly starts the recording paper 8 to i≠rotation i7+. Memory 1 at the same time
If a reversal command is also given to 4, the family of pulses of the name Kuy7 can be sent. Even in the case of a chair, the pulse fu required to rotate recording #I7 by the same distance -(f) in the forward or reverse direction is also the same.

In this way, He record 7+(8 is reversed.) At about 1t~, the number of pulses recorded in memory 14 as 1 and i gradually decreases.Then, this becomes zero.
The supply of pulses to the output port 18 is stopped according to the program 2 of step 5. Relative weight tQ2 rj of 71 on the pen of the recording paper at this time, previous record H5 start IIP'
l'(:oe)ru11k f? should match. In other words, the pen returns to a position opposite to the origin A. When the next recording is started, the h1 recorded waveform 1F'2 is recorded starting from the origin A, which is the recording start point of the recorded waveform W1.

According to the invention as described in detail above, when nj, j nails are repeated and it becomes yi, it is possible to make the fortune start from the same origin exactly 1711 times, and moreover, there is no recording paper for this purpose. To achieve the effect of automatically and reliably executing the revenge of

[Brief explanation of drawings]

Fig. 1 is a block diagram showing a cloth seri according to the present invention, e
FIG. 2 is a plan view of a recording paper showing an example of A 2 II'l'j,nLr recording. 11. . , 6 input terminals, 3 , , , Servo (Mitsushin,
8. Recording paper, 9. . . 00. Pen, 10, ..., Feed motor, 116000. Microcomputer, 12. ,
,,, Medium heat station J111 device 1-゛, 1'$+ 15--
---Memory, 16, Manual switch, 1
9 、、、、、Driver I Samurai Kende q++ people Japan? (j, Den Nakazawa, agent of Kosikagaku Co., Ltd.

Claims (1)

[Claims] A pen recorder records on recording paper transferred by a ben driven in accordance with an input signal, and includes a memory for storing the amount of the recording paper transferred from the time the pen starts recording, and a memory for storing the amount of the recording paper transferred after recording is completed. A pen recorder comprising an arithmetic processing device that calculates a reverse transfer amount so that the recording paper is reversed until the value stored in the memory matches the value stored at the beginning of recording +i [E-recording GFI start]