JPS6329205B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dot-type recording device that prints dots on thermal recording paper using a heating element, and digitally records analog waveforms and numbers based on the arrangement of the dots. It is an object of the present invention to provide a dot-type recording device that can always obtain a recording result of a constant length by aligning the relationship between the digital data acquisition cycle and the analog data acquisition cycle so as to have a predetermined relationship.

A large number of heating elements are arranged in a direction perpendicular to the paper feeding direction of the recording paper, and by selectively heating the heating elements, dots are drawn for each heating element on the thermal recording paper, and the dots are shaped into a dot array. Therefore, as shown in FIG. 1, a time display 2 representing the day, hour, and minute, for example, and a data display 3 representing the data value at that time are printed on a recording paper 1, and in order to represent continuous changes in the data. Analog waveform 4 can be recorded.

In such a recording device, the start period T ₁ to T ₂ for printing the time display 2 and data display 3 is referred to as one data frame, and the recording device is configured such that the period, that is, the length of one data frame can be set as appropriate.
The example in FIG. 1A shows a case where one data frame is set to 30 minutes. Generally, dots are printed at fixed time intervals, and the recording paper 1 is fed by a fixed amount in synchronization with the printing of the dots. Therefore, the length of one data frame is, for example, 30 minutes, 15 minutes, as shown in Figure 1B.
When the number of minutes is changed, the paper feed amount L sent to each data frame changes as L ₁ and L ₁ /2.
If the paper feed amount L of the recording paper 1 with respect to one data frame is not constant in this way, data analysis becomes difficult when the recording papers are arranged horizontally and the data is compared. In other words, if the length L of the recording paper 1 for recording one data frame can be made constant even if the length of one data frame changes, data comparison and analysis will become easier. In other words, recording digital data in tabular form at regular intervals makes it easier to read, and it also makes analog data more readable and easier to read.
Can record without losing continuity.

The purpose of this invention is to provide a dot-type recording medium that can keep the length L of the recording paper on which each data frame is recorded constant even if the length of one data frame is changed, and can therefore easily perform comparative analysis of data. To provide recording equipment.

In this invention, one data frame is always recorded with a constant number of printed dots. Therefore, when the length of one data frame becomes longer,
As the dot period becomes longer and conversely, the length of one data frame becomes shorter, the dot period becomes shorter, and the recording paper feed amount per dot is constant, and as mentioned earlier, the number of dots in one data frame is Since it is assumed to be constant regardless of the frame length, 1
The length L of the recording paper on which the data frame is recorded is constant.

An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 2 shows an embodiment of the present invention. In the figure, numeral 5 is a part of a conventionally known dot type recording device, and numeral 6 is a configuration added according to the present invention.

First, a conventionally known dot type recording device 5 will be explained. This example shows a case where the entire operation is sequentially controlled in a predetermined order by a program control device called a CPU or the like. Reference numeral 7 denotes the program control device, and the control device 7 and the configuration of each part are connected by a bus line 8, and the configuration of each part is controlled via the bus line 8.

Reference numeral 9 denotes an input terminal board, into which, for example, analog data of a plurality of channels is input. A plurality of channels of analog data inputted to the input terminal board 9 are sequentially selected by a scanner 11, inputted to an analog-digital converter 12, and converted into digital values. This digital conversion operation is carried out every time _{interval Tt} shown in FIG _.
is executed against. The data of each channel S ₁ to _{S o} that is digitally converted at every time interval T _t is stored in the analog recording storage section 13 . However, the data _D1 shown in FIG. 3C obtained every data frame period _TL is stored in the analog recording storage section 13 and also in the digital recording storage section 14. The data stored in the digital recording storage section 14 for each data frame cycle is updated every time the recording of that data frame is completed.
The analog recording data stored in the storage section 13 is converted to each channel by the print head position conversion section 15.
The position of the heating element corresponding to the digital value S ₁ to S _o is converted, the converted signal is stored in the print head register 16, and the hold output value of the register 16 is used to inline the position as shown in FIG. 3E. The thermal printer 17 is driven. At the same time, at the timing shown in FIG. 3F, for example, the stepping motor 18 is driven to feed the recording paper by a certain amount.

On the other hand, 19 is a printing dot counter, and each time one dot is printed in the thermal printer 17, the count is incremented by 1, and the position during one data frame is defined by the count. Therefore, the data values of each channel stored in the digital recording storage section 14 and the condition time storage section 21 are stored in accordance with the count contents of the counter 19.
The time value stored in is read out via the control unit 7,
It is stored in the character generation section 23. This character generation part 2
The digital value stored in 3 is converted into a character pattern signal of, for example, 5 x 7 dots by the character generation section 23, and the character pattern signal is transferred to the printed character storage section 22, and is transferred from the printed character storage section 22. It is set in the print head register 16 every cycle _Tt , superimposed on the analog data. Therefore, this character pattern signal is also printed on the recording paper 1 at the timing shown in FIG. 3E in synchronization with the recording of the analog waveform 4.

24 is a reference clock generation source, and the control section 7 is operated by the clock of this reference clock generation source 24, and the frame period generation section 25 which determines one data frame period T _L uses the clock pulse.
and a first clock P ₁ which is supplied to the data acquisition cycle generator 6 added according to the present invention and defines one data frame T _L from these cycle generators 25 and 6.
(Fig. 3A) and the second parameter that defines the data acquisition period T _t .
A clock P ₂ (Figure 3B) is generated. The period T _L of the first clock P ₁ is set by the condition setting section 26 .

In this invention, by setting the period T _L of one data frame in the condition setting section 26,
Based on the period T _L , the control unit 7 calculates and determines the data acquisition period T _t so that T _L /T _t = C (constant value), and determines the data acquisition period T _t as the data acquisition period. This is automatically set in the generating section 6. Here, C is the number of dots printed during one data frame, and this is initially set in the condition setting section 26. For example, if the number of C is 75, the analog waveform 4, time display 2, data display 3 (first
) will be drawn. The contents set in the condition setting section 26 are stored in the condition storage section 21, and the contents are displayed on the display section 27. The condition setting unit 26 also has a setting unit for, for example, a measurement start time and a stop time, and the measurement start time and stop time are also stored in the condition storage unit 21, and the time from the start time is the reference clock generation source 24. It is clocked at . The timing results are stored in the storage section 21. Note that as each of the storage units 13, 14, and 21, a random access memory built in the control unit 7 is generally used.

As described above, according to the present invention, the condition setting section 2
By setting the cycle T _L of one data frame in step 6, the data acquisition cycle T _t is automatically set so that T _L /T _t always becomes a constant value C by calculating T _L /T _t =C. In this way, the data acquisition period T _t
By automatically setting C by calculation, the number of dots printed during one data frame always becomes a constant value C. As a result, the period of one data frame is
Even if T _L changes, the length L of recording paper required to record one data frame remains constant. Therefore, no matter what cycle is set, the length of one data frame can be made to match, and data can be easily compared, and the effect is great in practical use.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an example of the results recorded by a dot type recording device, FIG. 2 is a system diagram showing an embodiment of the present invention, and FIG. 3 is a diagram for explaining the operation of the present invention. FIG. 1: Recording paper, 2: Time display, 3: Data display,
4: Analog waveform display, 5: Conventional dot type recording device, 6: Data acquisition cycle generator added according to the present invention.

Claims (1)

[Claims] 1. Means for setting and storing the cycle of one data frame, and calculating the dot printing cycle and data capture cycle based on the set values so that the data capture cycle is automatically proportional to the cycle of the one data frame. 1. A dot-type recording device comprising means for setting the number of dots, and means for performing one printout and feeding paper by a certain amount by one time of data acquisition.