SU1334165A1 - Device frp determining continuous signal squares - Google Patents

Description

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The invention relates to automation and computing, is designed to automatically determine the areas of recorded curves and can be used in conjunction with chromatographs, mass spectrometers and other similar devices. A device for determining the areas of the recorded waveforms signals is known, which contains an input register, subtractors, memory blocks, pulse counters, triggers, comparators, a time selector, AND, OR, OR, and a delay element.

 A disadvantage of the known device is its complexity.

Closest to the present invention is a device containing a one-rational amplifier, a pulse counter, a voltage-sensitive voltage transducer.

a frequency operating on the principle of a controlled voltage of the multivibrator, whose frequency is directly proportional to the input voltage, a logic device and a device for analyzing the maximum or minimum of the power supply curve.

The disadvantage of this device is that it does not calculate the combined areas of the recorded curves, and affects the accuracy of data processing and does not allow to fully automate the processing of the combined signals of the curves.

The purpose of the invention is to improve accuracy.

This goal is achieved by the fact that the device for determining the areas of continuous signals, containing an operational amplifier, whose input is the device input, and the output is connected to the input of the minimum and maximum curve analysis unit, and the threshold unit, the input of which is connected to the output of the minimum and maximum analysis unit curve, two AND elements, a subtraction unit, a dividing unit, a multiplier-dividing block, a trigger and three delay elements are introduced, with the output of the operational amplifier connected to the first input of the first AND element and through the first delay element - to the first input of the second element And, the second input of which is connected to the trigger output, connect

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through the second delay element to the second input of the first element AND, the inputs of the elements AND are connected to the input of the subtraction unit, the output of which is connected through the dividing unit to the input of the multiplying-separating block whose output is the output of the output of the minimum and maximum analysis unit connected to the inputs of the subtraction unit and the multiplying-dividing block, the single trigger input is connected to the output of the threshold block connected via the third delay element to the zero input of the trigger.

Figure 1 shows the structural diagram of the proposed device; figure 2 - curve of the combined signals.

The device contains an operational amplifier 1, the information output of which through the delay element 2 is directly connected to the first inputs of the second element 3 and the first element 4, the outputs of which are connected to the input of the subtraction unit 5, the output of which is connected to the multiplication-divi- The unit 7, connected to the input of the minimum and maximum curve analysis unit 8, is also connected to the input of the subtraction unit 5 and the input of the threshold unit 9, trigger 10, whose single input is directly and the zero input through. the delay element 1I is connected to the output of the threshold unit 9, the output of the trigger 10 is connected to the second input of the AND 3 element and through the delay element 12 to the second input of the AND 4 element. The output of the multiplying-separating block 7 is the output of the device.

The device works as follows.

A continuous signal from the output of the operational amplifier 1 is fed through the element 2, the delay (delay time Cd,;,) to the input of the And 3 element, as well as directly to the input of the And 4 element. If there is a enable signal at the input of the And 3 element, then the signal from The delay element 2 (voltage U in Fig. 2) is fed to the input of subtraction unit 5. At the same time, the voltage U ,, comes to this block. At the output of block 5, a voltage value is obtained, corresponding to the difference

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In block 6, the division of 4U is made by the time equal to the delay time of the signal

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The multiplier-division block 7 receives a signal and a voltage corresponding to tan {f. , while there is a calculation of the area of the CRF according to

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which corresponds to a part of the plane for the downstream branch of the superposed signal. The calculation of the area 4ABD is carried out similarly, only in this case the voltage and "for the ascending branch (Fig. 2) goes directly to the second element 4,

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The resolving signals at the inputs of the And 3 and 4 elements come from the output of the trigger 10, which is triggered by the signals from the output of the threshold unit 9, which provides the minimum signal coming from the minimum and maximum curve analysis unit 8.

The single output of the trigger 10 is the enable signal of the And 3 element, as well as the And 4 element, but with a delay Gd2 which is provided by the delay element 12.

The use of the proposed device allows the automatic processing of data in order to obtain areas of the combined signals, which improves the accuracy of the calculations by taking into account the combined planes.

recorded curves, obtained separately.

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Editor A.Revin

Compiled by S. Belan Tehred I. Popovich.

Order 3964/46 Circulation 672 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Proofreader S. Shekmar

Claims (1)

DEVICE FOR DETERMINING AREA OF CONTINUOUS SIGNALS, containing an operational amplifier, the input of which is the input of the device, and the output is connected to the input of the analysis unit of the minimum and maximum curve, and a threshold unit, the input of which is connected to the output of the analysis unit of the minimum and maximum curve, characterized in that, in order to improve accuracy, two And elements, a subtraction block, a division block, a multiplier divider block, a trigger and three delay elements are introduced into the device, the output of the operational amplifier being connected to the first input of the first element And and through the first delay element to the first input of the second element And, the second input of which is connected to the trigger output connected through the second delay element to the second input of the first element And, the outputs of the elements And are connected to the input of the subtraction unit, the output of which is through the division unit is connected to the input of the multiple dividing unit, the output of which is the output of the device, the output of the minimum analysis unit and the maximum curve maximum is connected to the inputs of the subtraction unit and the multiplying dividing unit, a single input of the igger is connected to the output of the threshold block connected through the third delay element to the zero input of the trigger. 00 DOF hU oh? Joint venture