SU446008A1 - Device for converting the signal of radiometric devices - Google Patents

Description

one

The invention relates to devices for converting a signal from radiometric devices, by means of which various physical characteristics of a substance are measured, such as thickness, density, element content in a mixture,

A device for generating a signal from radiometric devices is known. The disadvantage of this device is that it has a relatively narrow range of linear dependence between the measured physical quantity and the received signal,

In order to expand the measurement range of radiometric devices, the storage counter in the proposed device is reversible, and the output of the pulse device is connected to the input of the storage counter and to the input of the above recalculation device, the output of which is connected to the input of the switching device.

The drawing shows the block-ohv "1 Ma of the proposed device.

The device contains a detector I, recording the radiation flux. 5 depends on the measured physical quantity, amplifier 2, discriminator 3, key 4, scaler. Listing 5, having an adjustable conversion factor, storage meter 6, switching device 7, pulse generator 8, key 9, reversible counters 10, II, control device 12,. reset and start device 13. 5 Not before the start of measurement keys. 4 and 9 are locked. The reset signal from device 12 sets all devices to their initial state, and the start signal from device 13 0 opens keys 4 and B,

From the output of the discriminator 3, the pulses through the key 4 begin to flow to accumulative counter 6 and through the enumeration device 3 5 and the switching device 7 Ы to the reversible one with the btch. At the same time the pulses from the generator mfnpibcoB 8 through the key, 9 and the switching device 7 are fed to the addition to the reversible; counter When counter II is filled, the signal from its output goes to control device 12, which locks keys 4 and 9, switches} switching device 7 and opens keys 4 and 9 again. Now the pulses from the output of discriminator 3 go to accumulative counter 6 and recalculation device 5 and switching device 7 - for adding on. The pulses from the generator 8 are fed to the counter 10 by subtraction. cue. When the counter is set to zero, the pulse from its output goes to the control device l2, the output of which triggers the keys 4 and 9, switches the device 7 and unlocks the keys 4 and 9 again. Now the pulses from the output of the discriminator 3 go to the storage counter 6 and through devices 5 and 7 to the counter 10, which are complex, Ogr of the generator 8 shlpulsa goes through the device 7 to the counter II at the subtitle. four and 9. The third cycle of operation of the device is ending. Such cycles can be determined by a given program, in accordance with which the control device 12 operates. Pulses from the output of the discriminator 3 can be fed to cumulative counter 6 both in terms of subtraction and subtraction, which is also determined by the program. cumulative counter 6 after the execution of the program. serves to determine the measured. physical quantities. The choice of the program depends on the type of approximating formula, determined by the nature of the interaction of the radiation with the substance, the measurement range of the physical quantity and the required measurement accuracy. BACKGROUND OF THE INVENTION A D7Sh device for converting a signal from radiometric devices, with a pulse device consisting of an amplifier and a discriminator, a pulse generator with a scaling factor It is distinguished by the fact that, in order to expand the range of measurements of radiometric devices that measure physical quantities, for example, thickness, density, content and in the mixture, a cumulative counter in it is made. The reversing output of a pulse device (in combat with the input, cumulative counter and combination of scaling device, the output of which is connected to the input of the switching device.