JPH0465965B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a recording device, and more specifically, it converts the magnitude of an analog input signal into a digital signal and prints dots 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 in a dot pattern while moving a recording head for recording in a single direction perpendicular to the feeding direction of recording paper.

[Prior Art] One type of such a recording device is the Yokogawa Technical Report (Vol. 25, No. 4) published by Yokogawa Electric Corporation on December 20, 1981, from page 9 to page 9. There is something listed on page 13.

By the way, in such conventional recording devices, the dot recording mechanism changes the effective recording width from one end (0%) to the other end (100%) or from the other end (100%) to one end (0%).
%) in a single direction, the measured values of each of the analog input signals of, for example, 30 channels are recorded only once for one line, and the recording speed is determined by the moving speed of the recording head. become. That is, in order to increase the recording speed, the moving speed of the recording head must be increased.

[Problems to be Solved by the Invention] However, it is not easy to increase the moving speed of the recording head because the load on the recording head is relatively large.

The present invention has been made with attention to these points, and its purpose is to provide a recording device that can perform high-speed recording with a relatively simple configuration.

[Means for Solving the Problems] The present invention, which achieves the above objects, converts the magnitude of an analog input signal into a digital signal, and converts the recording head that performs dot recording on recording paper according to the converted digital signal. In a recording device configured to record the magnitude of an analog input signal on recording paper in an analog manner using a dot pattern while moving in a single direction orthogonal to the feeding direction, recording position data for multiple consecutive lines is recorded. A memory is provided to temporarily store the designated data, and while the recording paper is moved back and forth according to the row designation data stored in this memory, a plurality of continuous rows of data are recorded on the recording paper by one movement of the recording head in a single direction. It is characterized in that it is configured to record the magnitude of an analog input signal for a row.

[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 in a reciprocating direction 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 a recording head that records multicolor dots in predetermined colors corresponding to input signals on the recording paper 6, and 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 stops feeding, the recording paper 6 is moved in a single direction perpendicular to the feeding direction of the recording paper 6, for example, in steps of 0.1 mm/step. As such a recording head 9, an inkjet head, a wire dot head, a disposable pen head, etc. are used.
For example, as shown in FIG. 2, the inkjet head is capable of recording dots of each of the three primary colors (cyan C, magenta M, yellow Y) discretely at constant intervals along the direction of movement of the recording head 9. Use the one configured as follows. As shown in FIG. 3, the wire dot head corresponds to the ink ribbon 9A that is fed along the feeding direction of the recording paper 6 and is dyed in multiple colors in the width direction, and the number of color bands of this ink ribbon 9A. A dotting mechanism 9b having a plurality of dotting needles arranged along the feeding direction of the recording paper 6 and selectively driven to transfer a predetermined color of the ink ribbon 9A 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. Note that in this embodiment, the first memory 5
Although an example is shown in which a common memory is divided and used as the second memory 13, independent memory may also 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. 18 is a keyboard for setting the operating mode of the device, type of input signal, measurement range, alarm setting value, paper feed speed, etc. The data inputted from these keyboards 18 is sent to the third The data is temporarily stored in the memory 20 of. Note that this third memory 20 is connected to the battery 2.
1, and the data will be stored 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 24 is a plurality of lines of recording position data to be recorded by one movement of the recording head 9 in a single direction, together with line designation data. A temporary storage memory, P, is a panel. Note that the recording head 9
Alternatively, at least one end of the scan area of the recording head 9 is provided with edge detection means for generating an edge signal and resetting the position data of the recording head 9 when the recording head 9 reaches the edge of the scan area. Although it is provided, it is not shown.

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

For example, if the magnitude of analog input signals of 30 channels is to be recorded in 5 consecutive lines on the recording paper 6 by one movement of the recording head 9 in a single direction, each line is stored in the memory 5. The recording position data for five lines is temporarily stored in the memory 24 together with the line designation data. When storing these data in the memory 24, for example, the recording position data is set as the x coordinate and the line designation data is set as the y coordinate.
Stores coordinate data for dots (=30 channels x 5 lines). Here, in position correction for recording in a predetermined color assigned to each input terminal, reference elements of each element of the recording head 9 that records a predetermined color assigned to each input terminal are used. What is necessary is to add or subtract the phase difference signal for the recording position data. Further, when recording, two or more colors may be mixed as necessary.

After storing the dot data for five rows in the memory 24 in this way, the recording head 9 is moved in a single direction, and the recording paper 6 is moved back and forth according to the row designation data, so that each of the five consecutive rows is stored in the memory 24. The magnitude of the input signal is recorded in analog dots in a predetermined color.

FIG. 4 is an explanatory diagram showing a part of such a recording example. In addition, in FIG. 4, for convenience of explanation, a
Record the channel measurement values in a “○” pattern,
It is assumed that the measured values of the b channel are recorded in a "Δ" pattern, and the measured values of the c channel are recorded in an "x" pattern. Assume now that the reference element of the recording head 9 is located at coordinates (0, 1) corresponding to 0% of the recording paper 6. In this state, memory 24
Search for dot data a3 whose x coordinate is 0 from among the coordinate data of 150 dots stored in let As a result, the recording head 9 is moved to the recording paper 6 at the coordinates (0,
3), and dot recording of dot data a3 is performed. When the recording of the dot data with the x coordinate of 0 is completed in this way, the recording head 9 moves by one dot in the direction of the arrow xa, and begins recording the dot data with the x coordinate of 1. Then, dot data a2 and a4 whose x coordinate is 1 are searched from among the coordinate data stored in the memory 24, and the recording paper 6 is moved 1 in the direction of arrow yb according to the y coordinate data 2 of the dot data a2. Move by line. As a result, the recording head 9 is moved to the coordinates (1,
2), and dot recording of dot data a2 is performed. Next, dot data a4 y
The recording paper 6 is moved two lines in the direction of the arrow ya according to the coordinate data 4, and after the recording head 9 is positioned at the coordinates (1, 4) of the recording paper 6, the dot data a4 is
Dot recording. Similarly, dot data is recorded by moving the recording head 9 one dot at a time in the direction of the arrow xa while moving the recording paper 6 in a reciprocating direction according to the dot data. In the case of Figure 4, the dot pattern is a3 → a2 → a4 →
a5 → b3 → b2 → a1 → b4, c4 → c5 → b
It will be recorded in the order of 5→c3→b1→c2→c1. In this way, the recording head 9
By moving to 100%, five lines of recording will be performed. Note that the memory 24 has two areas for storing coordinate data for, for example, 150 dots.
Two areas are provided, and the recording is performed based on the coordinate data stored in one area, and the coordinate data to be recorded next time is stored in the other area, which are alternately switched.

With this configuration, the recording head 9
while moving in the xa direction from one end of the recording area to the other, and if necessary from the other end to one end
Even while returning to the direction, the magnitude of the analog input signal applied to each input terminal can be recorded in analog fashion in multiple rows with dot patterns of predetermined colors corresponding to the respective input terminals.

Next, 5 consecutive
The entire recording time when dot recording a line will be explained.

For example, in Figure 1, 30 channels of analog input signals can be converted into digital signals in 1 second,
The recording head 9 has a recordable area of 250 mm on the recording paper 6.
Dot recording is performed while scanning at 5 seconds, and the interval between recording lines on the recording paper 6 is set to 0.25 mm regardless of the feeding speed of the recording paper 6.
If the feed speed is 180 mm/h, recording head 9
The scan period Xsec for one time becomes 5sec from X=(0.25×3600)/180=5(sec). In this embodiment, if the feeding speed of the recording paper 6 is faster than 180 mm/h, the scan period Xsec becomes shorter than the time required for one scan of the recording head 9, 5 seconds, so the feeding speed of the recording paper 6 is The maximum speed is 180mm/h. The feed of the recording paper 6 is 0.05 mm per step.
The cycle of the chart paper feed step is 5ms.

In the conventional configuration, the recording paper 6 is intermittently printed every 5 seconds.
Dot recording is performed by scanning recording head 9 once every pause period of recording paper feeding while feeding the recording paper by 0.25 mm, so in order to record 5 lines, recording head 9
is 1250mm after 5 scans (= 250mm x 5 times)
It takes at least 25 seconds (=5 seconds x 5 times) to move the recording paper 6, and the recording paper 6 moves 1 mm for 100 ms (=5 ms
It will move in steps).

In contrast, according to the configuration of the present invention, the time required to record five lines is 5 seconds, which is the time required to move the recording head 9 by 250 mm in one scan.
The time required to move the recording paper 6 by 5 lines (1 mm) for a maximum of 150 dots is 15 seconds (=
5ms x 20 steps x 150 dots),
This means that it can be reduced by at least 5 seconds. In the above explanation, it is assumed that when recording 150 dots, the recording paper 6 is moved by 5 lines for each dot, but in reality, it can be considered that the movement is about half that, and the recording speed is faster than that of the conventional configuration. The time can be reduced to almost 1/3.

Furthermore, if a recording speed comparable to that of the conventional recording head is required, a relatively lower speed recording head than that of the conventional recording head can be used, thereby reducing costs.

Further, in the above explanation, only dot recording of analog input signals has been explained, but characters, symbols, etc. can also be dot recorded as in the prior art. In this case, the recording position data of the analog input signal is stored together with the row designation data;
For example, the recording position data of characters and symbols is stored together with coordinate designation data corresponding to the movement resolution of the recording paper. According to such a configuration, a recording pattern of a constant size can always be obtained regardless of the set value of the moving speed of the recording paper. That is, depending on the setting value of the moving speed, it is possible to record on the same line as the analog input signal, or it is possible to record between the lines where the analog input signal is recorded.

In the above embodiment, a multi-point, multi-color recording device that records five lines at a time has been described, but the number of recorded lines may be increased or decreased as appropriate, and the same effect can be obtained even with a multi-point, single-color recording device. It is.

It may be hot.

[Effects of the Invention] As described above, according to the present invention, a recording device capable of high-speed recording can be realized with a relatively simple configuration.

[Brief explanation of the drawing]

FIG. 1 is a configuration explanatory diagram showing an embodiment of the present invention;
FIGS. 2 and 3 are configuration explanatory diagrams showing specific examples of the recording head used in the present invention, and FIG. 4 is an explanatory diagram of an example of the recording operation. 1 ₁ to 1n...Input terminal, 2...Multiplexer, 3...Amplifier, 4...A/D converter, 5,1
3, 15, 20, 24...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, 17... Display drive circuit, 18... Keyboard, 19... Keyboard interface, 22...
...Input/output port, P...panel.

Claims (1)

[Claims] 1 Convert the magnitude of an analog input signal to a digital signal and record dots according to the converted digital signal.The analog input signal is transferred onto the recording paper while moving the recording head in a single direction perpendicular to the recording paper feeding direction. In a recording device configured to record the size of a line in an analog manner using a dot pattern, a memory is provided to temporarily store recording position data for a plurality of consecutive lines together with line designation data. It is configured to record the magnitude of analog input signals for multiple consecutive lines on the recording paper by one movement of the recording head in a single direction while reciprocating the recording paper according to the line designation data. A recording device characterized by: