JP2687363B2 - Spectral data input device - Google Patents

Description

Detailed Description of the Invention (a) Field of Industrial Application The present invention is drawn on a CRT display or chart paper,
The present invention relates to a spectrum data input device for converting a spectrum curve existing as a recorded image into a digital signal and storing the digital signal. (B) Conventional technology For example, in order to input a spectrum curve recorded as an image on a conventional chart paper surface into a computer (computer), an operator looks at the chart paper in advance and at which memory increment It is decided whether to input or not, and data of each point is manually input using a keyboard, or a method of inputting by operating an operation pen of a digitizer with an operation pen along a spectrum curve is adopted. (C) Problems to be Solved by the Invention Using the conventional keyboard described above to pick up and input each point of each spectrum is to read the coordinate position of each spectrum and also to input manually. Therefore, it is time-consuming, time-consuming, and if the reading accuracy is unclear, the spectrum of the input data will be distorted, and the operability will be improved if a digitizer is used. However, since the person who inputs the data is a human, there is a problem in that the roughness of the operation tends to cause an error and the accurate spectrum cannot be filed. The present invention solves the problems of the conventional spectrum data input device described above, and provides a spectrum data input device capable of accurately inputting a drawn spectrum curve as data by a simple operation, that is, without any trouble in input operation. It is intended to be provided. (D) Means and Actions for Solving Problems The spectrum data input device of the present invention includes a spectrum drawing means on which a spectrum curve is drawn, an image scanner which scans the whole drawing means and captures it as image data, Means for moving the image scanner on the time axis with respect to the spectral curve of the drawing means, storage means for extracting and filing spectral data from the image data taken in by the image scanner, and display means for displaying the spectral data. , The display frame of the maximum value and the minimum value of the spectrum data on the display screen of this display means,
And pointing means for setting the point when the interval between the scales changes in the middle. In this spectrum data input device, spectrum drawing means in which a spectrum to be captured is drawn, for example, chart paper is line-scanned using an image scanner,
Since the time axis is moved and sequentially read, the scanning and movement of the image scanner are sequentially and automatically performed, and the position and time of each spectrum are accurately captured according to the accuracy of the image scanner. And reproducibility is good. Moreover, the operation for inputting is easy. (E) Examples Hereinafter, the present invention will be described in more detail with reference to Examples. FIG. 1 is a block diagram of a spectrum data input device of an infrared absorption spectrometer showing an embodiment of the present invention. In FIG. 1, a chart paper 1 on which an infrared absorption spectrum is recorded is installed in a chart paper installation unit 2, and the chart paper 1 is configured to be scanned by an image scanner 3 from the left side to the right side. As the image scanner 3, for example, a scanner in which CCD cells are line-connected is used. Under the control of the personal computer 4, the image scanner 3 is sequentially moved to the right side at a predetermined pitch while performing scanning processing from the left side of the chart paper 1, that is, taking in of data, and takes in data to the personal computer 4, The file is stored in the storage device 5. The spectrum data input device also includes a CRT display 6 that displays a spectrum. The operation of the spectrum data input device of this embodiment will be described with reference to the flow chart shown in FIG. When the operation starts, first, the chart paper 1 is placed on the installation section 2.
Is set [Step ST (hereinafter referred to as ST) 1]. Then, the entire chart paper 1 is scanned by the image scanner 3, and its output is directly stored as image information in the memory and displayed on the CRT display 6 (ST.
2). Next, with respect to the spectrum on the screen of the CRT display 6, in order to determine the frame of the maximum value and the minimum value of the wave number and the transmittance, with a pointing means (for example, a mouse),
Designate two points marked with ○ (or points marked with ×) shown in Fig. 2 (ST3) and make these two points diagonal, and each piece should be a rectangle parallel to the horizontal or vertical line on the screen. and a frame representing a value, the minimum value, the maximum value of the wave number and transmittance, a minimum value (wave number, 4000 cm ^-1, and 400 cm ^-1 input from the keyboard of the personal computer 4, is displayed on the screen of the CRT display 6 ( ST4) .If the scale interval changes in the middle (before and after 2000 cm ^{-1 in} Fig. 2), that point (point of △) is also specified by pointing means and the value is entered on the keyboard. Type in 4000-2000cm ^-1 , 2000-400cm ^-1
Are equally spaced scales. In this way, CR
Correlate the coordinates of the T display 6 with the coordinates of the wave number and the transmittance. In the subsequent processing, the spectrum taken in as the surface information is filed as the line information and is exclusively executed by the computer. First, at 4000 cm ^-1 , the value of the transmittance is stored with the point having the highest image density as the point representing the transmittance (ST5). The reason why such a method, that is, the maximum density point of the image is extracted, is to prevent stains on the chart paper and ink blurring from being mistakenly recognized as waveform waveform points. Next, the wave number is moved to the right on the screen of the CRT display 6 by a certain distance (ST6), and the point at that wave number, that is, the highest concentration point is recognized (ST6), as in the case of 4000 cm ^-1.
7), memorize the wave number and transmittance (ST9). Then, until the wave number reaches 400 cm ^-1 (ST10), the process returns to ST6, the above-mentioned processing is repeated, and the transmittance is stored while sequentially reducing the wave number. However, in the unlikely event that an unnecessary point is recognized, in order to correct this, the distance between the point on the spectrum waveform captured by the previous wave number and the point currently captured is a fixed value (set in advance). If it exceeds, the computer pauses there, the operator (human) judges whether the point is correct (ST11), if correct, moves to ST9, continues the operation as it is, if it is incorrect, , Give the point of correct transmittance by pointing means (ST12). Then move to ST9. When the wave number reaches 400 cm ^-1 (ST10), a file is created from the stored wave number and transmittance data (ST13), and the file is stored in the storage device 5 (ST1).
Four). Then, take out the chart paper 1 from the installation unit 2 (S
T15), the operation ends. When outputting the completed file to a CRT display or printer, connect the points with straight lines to make it more like a spectrum waveform. In the above embodiment, the operation of capturing the spectrum drawn on the chart paper 1 has been described as an example, but the spectrum data to be captured is not limited to the one stored in the chart paper 1 and may be, for example, a CRT. The same applies when inputting the spectrum data displayed on the screen. In addition, in the above-mentioned embodiment, the infrared absorption spectrum is taken as an example, and therefore, the case where the wave number interval of 4000 to 2000 cm ⁻¹ and 2000 to 400 cm ⁻¹ is changed is taken as an example. It is not necessary to change the interval. (F) Effect of the Invention According to the present invention, the entire spectrum drawing means is captured as image data, and the spectrum data relating to the spectrum curve is extracted from the image data and stored, and is also displayed on the display means. At this time, the operator sets the maximum and minimum display frames of the spectrum data on the display screen of the display means by the pointing means, and sets the point if the interval between the scales changes midway. It is possible to easily input data without the need for any complicated operation for data input. Moreover, since the data is electronically taken in from the image scanner, there is an advantage that the data can be taken in with high accuracy as compared with the case where an operator, that is, a person inputs the data. Further, since not only all of the enormous amount of image data is stored but only the spectrum data is extracted and stored, the storage capacity can be reduced and data processing as spectrum data becomes possible.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a spectrum data input device showing an embodiment of the present invention, FIG. 2 is a diagram for explaining scanning of the spectrum data input device, and FIG. It is a flow diagram for explaining the operation of the spectrum data input device. 1: Chart paper, 2: Chart paper installation part, 3: Image scanner, 4: Personal computer, 5: Storage device, 6: CRT display.

Claims (1)

(57) [Claims] Spectrum drawing means with a spectral curve drawn,
An image scanner that scans the entire drawing means and captures it as image data, a means that moves this image scanner on the time axis relative to the spectral curve of the drawing means, and extracts spectrum data from the image data captured by the image scanner. When the storage means for storing the data, the display means for displaying the spectrum data, the display frame of the maximum value and the minimum value of the spectrum data on the display screen of this display means, and the interval of the scale are changed on the way, A spectral data input device comprising a pointing means for setting the point.