G - Physics – 01 – R
Patent
G - Physics
01
R
324/63
G01R 21/06 (2006.01)
Patent
CA 1118048
ABSTRACT OF THE DISCLOSURE A digital device for determining a steady-state value of the analogue signal comprises an analog-to-digital converter for converting the analogue signal into a numerical pulse code connected through a synchronization unit to inputs of threshold counters, a clock pulse generator connected through a synchroni- zation unit to the inputs of the threshold counters and to inputs of a time interval discriminator and through a frequency halver to the inputs of a reversible counter, and a digital display unit connected to digital outputs of the reversible counter. The device also comprises decoders of zero state of the threshold counters, having their inputs connected to the respective thres- hold counters and their outputs connected to subtract count block- ing inputs of the respective threshold counters to the inputs of the reversible counter and to a control input of the digital display unit. Overflow inputs of the threshold counters are connected to initial setting inputs of the time interval dis- criminator. An information output of the time interval dis- criminator is electrically connected to the input thereof and to the inputs of the threshold counters to those of the reversible counter, and to the control input of the digital display unit. In addition, the device includes seven AND circuits and three NOT circuits by means of which logical control of electric communi- cation between the units of the device is effected. The fore- going design of the device permits the steady-state value of the analogue signal to be determined more accurately. In the device an error in determining the steady-state value depends exclusively on the resolution ability of the analog-to-digital converter and not on the level of noise. The use of simple elements and units of the digital-computing technique in the device ensures high reliability, low cost and small dimensions.
316941
Fainzilberg Leonid S.
Skurikhin Vladimir I.
Zhitetsky Leonid S.
Institut Kibernetiki Akademii Nauk Ukrainskoi Ssr
Marks & Clerk
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