JPS641728B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an apparatus for processing data obtained from a physical and chemical analyzer or the like.

In physical and chemical analyzers, there are many cases in which information regarding components in a sample appears in peaks over time. For example, in the case of a gas chromatograph, the signal emitted by the detector is integrated by an integrator to determine the peak area, and calculations are performed to determine the retention time and content percentage of each component, and the values are printed on roll paper. things were being done. However, in this conventional method, the chromatograms are printed on a separate sheet of paper from the recording paper, making it difficult to collate and organize the analytical data.

An improved version of this is a known example shown in JP-A-48-12796. This is a method in which the peak area is integrated and digitally printed on a translucent tape paper that is moved at the same speed as the chromatogram recording paper, and this tape paper is pasted on the recording paper at a position that matches the component peak. Although the above method is convenient for organizing analytical data, it requires two output devices, a recorder and a printer, to process one signal.
It has not yet been possible to indicate the percentage content of each component.

Recently, further improved data processing and recording devices have been put into practical use. That is, it is an apparatus that draws a chromatogram on a roll paper in real time, stores the data, and after the analysis is completed, calculates the retention time and content percentage of each component and prints them on the same roll paper. However, since this device records signals by continuously moving one point, it takes time to operate and has poor ability to follow waveforms, making it difficult to draw accurate chromatogram curves. Furthermore, since the width of the roll paper on which this is recorded is narrow, it is difficult to display the peak shape of large components and the situation of small components in a manner that can be seen at a glance. In other words, if you adjust the sensitivity to a level suitable for detecting the peak of a large amount of components, the peak of a small amount of components will not appear, and if you adjust the sensitivity to a level suitable for detecting a small amount of components, the peak of a large amount of components will scale over, so the profile will change. cannot be confirmed.
In order to express the peaks of both components, complicated operations were required in which the degree of attenuation had to be changed for each component peak.

SUMMARY OF THE INVENTION An object of the present invention is to provide a data processing device that can determine the peak shape of both a large amount and a small amount of components in a sample even if only one measurement is performed.

A preferred embodiment of the present invention includes means for converting an analog signal from a signal source that generates a time-varying analog signal into a digital signal, and a digital computer. This digital computer has calculation means for calculating digital signals according to a predetermined program, and storage means for storing the results calculated by the calculation means, and the signals taken out from the storage means are printed as figures and characters. printed by means of The storage means has a print buffer that sequentially stores digital signals in a plurality of bit storage elements and stores a figure corresponding to changes in the original analog signal as a whole, and the digital signal is stored in the print buffer. It has means for attenuating the digital signal in a plurality of stages before being transmitted to obtain a plurality of attenuated signals. As the printing means, a dot matrix type printing means is used in which signals are printed as a plurality of dots on the print paper using a print head having a plurality of needles. The printing control means controls the printing means so that the print buffer is filled with the plurality of attenuation signals and then displays the plurality of points stored in the print buffer, and also displays the calculation result as a character string as described above. The printing means is controlled so that the image is displayed on the same print paper as the image.

In a preferred embodiment, a plurality of dot-displayed figures and characters representing their analytical calculation results are dot-printed (dot matrix printing) using ribbon-type ink on the same roll of printing paper. As for the above-mentioned attenuation signal, the attenuation ratio is 1
This shall also include the case of

FIG. 1 is a block diagram showing the configuration of a data processing device for a gas chromatograph, which is an embodiment of the present invention. Digital computer 1, which is the main part of this device
A bus bar 4, an arithmetic unit 5, and a storage section 6 are built in. When the signal source 2 of the gas chromatograph generates an analog signal, this analog signal is A-
The signal enters the D converter 3, is digitized, and is supplied to the bus 4. Next, the digital signal is processed by the arithmetic unit 5 and stored at a predetermined location in the storage section 6. As the analysis progresses, signals attenuated in four stages are successively taken into this memory location in the form of analog signal figures, and when this memory location is filled, they are embossing printed by the printing device 7. The signals stored in the storage section 6 are returned to the arithmetic unit 5 to perform predetermined calculations, and the analysis results (retention time, content percentage, etc.) are printed on the analog signal graphic (chromatograph) using the same printing device 7. Dots are printed on the same roll paper as (grams).

FIG. 2 is a diagram illustrating the distribution of signals in the storage section of the present embodiment shown in FIG. 1. This specific location within the storage section 6 is a location where the embossing data is temporarily stored and is called a print buffer 9. This location contains 128 8-bit data storage sections 8. The digital data signal integrated over a constant minute time interval first enters the 0 column at the left end,
As the next signal is captured, it sequentially moves to the right column to accept subsequent data signals.

When the print buffer 9 is filled with data signals in this way, the printing device 7, which has a print head having, for example, five rows and seven columns of needles, is activated by the drive command of the arithmetic unit 5 of FIG. Move the needle and start printing from the data signal in the left column.
The black dots shown in FIG. 2 indicate storage locations of data signals, and when these points are connected as shown in the figure, they form a shape similar to one sample component peak. However, in actual analysis, since the above-mentioned ejection time interval is short, they are often lined up almost in a straight line. In this way, when all the data stored in the print buffer 9 is printed out and becomes empty, the next data signal is taken in in the same manner and printing is repeated.

FIG. 3 is an explanatory diagram of means for obtaining signals having different degrees of attenuation in the storage section of this embodiment. The digitized data signal passes through a data area 10 in the same storage section 6 before being sent to the print buffer 9 shown in FIG. When a signal enters the data area 10 consisting of 16 bits, the signal is divided into ranges 11 to 15 by three bits each from the higher order bits corresponding to the bits of this storage part. When the corresponding bit range is checked by masking 19, an unattenuated signal is sent out.
Next, when the bit range corresponding to masking 18 is checked, a signal attenuated to 1/8 is sent out and enters the print buffer. Similarly, when masking 17 is checked, the signal is 1/64, and when masking 16 is checked, the signal is 1/64.
The signal at 512 is sent to the print buffer.

FIG. 4 is a diagram showing the distribution of attenuated signals in the storage section. When the signal sent from the data area 10 is distributed in the print buffer 9 in the shape of an analog signal diagram with different degrees of attenuation as shown in the figure, it is printed out by the printing device 7 and records the figure as shown in FIG. do.

FIG. 5 is a diagram showing an example of printing by the data processing apparatus of this embodiment. The sample used was a mixture of four components, and by looking at this four-stage attenuated chromatogram, the peak shape, height, peak position, and content of each component can be known at a glance. Since the chromatogram drawn by the conventional gas chromatograph data processing device was only one continuous record, it was difficult to accurately know the height and position of the overscaled peak. In such cases, in order to be able to record the peak of a large amount of components, it is necessary to adjust the amount of sample or the attenuation degree, and in this case, it has become difficult to detect trace components due to sensitivity. be.

The characters printed on the right side of Figure 5 indicate the analysis results, where P# is the peak number and R・T・ is the peak retention time (the time from the time of sample injection until the appearance of the component peak). , and % indicates the content percentage. These characters are obtained by taking out the data signal stored in the storage unit 6 at the time of analysis after the analysis, performing predetermined calculations, and printing a dot matrix with seven needles.

In the above-mentioned embodiment, accurate and easy-to-read chromatograms with different attenuation levels are drawn directly on a single sheet of roll paper, and the analysis results are also printed on the same sheet of paper, so a recorder is not required and the process is simple, inexpensive, and accurate. There are effects that data processing can perform.

In the above example, a gas chromatograph is used as an example, but in addition to a liquid chromatograph, a mass spectrometer or other analyzer can be used such that the position of a component peak identifies the component, and the peak area indicates the amount of the component. It has a remarkable effect when applied to data processing of physical and chemical analyzers.

According to the present invention, analysis figures and analysis data are printed on a single sheet of paper with a plurality of different attenuation degrees, so there is no need for re-measurement to confirm the peak profile, reducing the complexity of operations. The effect is great.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a data processing device for a gas chromatograph that is an embodiment of the present invention, FIG. 2 is a diagram explaining the distribution of signals in the storage section of the device shown in FIG. 1, and FIG. An explanatory diagram for obtaining signals with different degrees of attenuation in the storage section, FIG. 4 is a diagram showing the distribution of attenuated signals in the storage section,
FIG. 5 is a diagram showing an example of printing by the data processing apparatus based on the embodiment shown in FIG. 1...Digital computer, 2...Signal source, 3...
A-D converter, 4...Bus bar, 5...Arithmetic unit, 6
...Storage unit, 7...Printing device, 8...Data storage section, 9...Print buffer, 10...Data area, 11-15...Range, 16-19...
…masking.

Claims (1)

[Claims] 1. A means for converting an analog signal from a signal generation source that generates an analog signal that changes over time into a digital signal, and a printing means for printing the result of processing the digital signal as figures and characters. When the digitally converted signal is passed through the data area, it is checked by a plurality of maskings and a plurality of attenuated signals are sent to a print buffer having a plurality of bits, and each of the print buffers is A plurality of signals having different degrees of attenuation are sent to the bits to temporarily store the print buffer as a whole in a plurality of substantially similar figures corresponding to changes in the analog signal, and the print buffer is filled up. A data processing station characterized in that it is provided with a digital computer that prints the data stored in each bit of the print buffer by a dot matrix type printing means every time the data is stored in each bit of the print buffer. 2. The data processing device according to claim 1, wherein the signal generation source is a chromatography device, and the graphic to be printed is a chromatogram.