The article presents the results of the development of the executive subsystem of a combined medical measuring device - an ophthalmopneumonasotonometer, with the help of which it is possible to measure intraocular pressure and the characteristics of the pressure pulse in the anterior ciliary arteries of the eye. Based on the results of the analysis of the subject area, the author proposed a structural and electrical diagram of the executive subsystem of the device, considered technical solutions of its individual elements.
Keywords: ophthalmopneumovasotonometer, intraocular pressure, executive subsystem, anterior ciliary arteries
An experimental study of a quartz generator of the GK380-P-7VS-450M-3.3 s type was carried out.A description of the scheme and design is given. The results of the experiment are presented, including the frequency run-out, the frequency dependence on the supply voltage, and the output signal spectra for three different viewing bands. The following parameters of the output signal were obtained: the operating frequency of 450 MHz, the amplitude of the sinusoidal signal of 210 mV, the frequency run - out in 20 minutes of 550 Hz, frequency instability when the supply voltage changes 230 Hz, suppression of the second and third harmonics of at least 30 dB.
Keywords: quartz oscillator, frequency instability, frequency run-out, the amplitude of the sinusoidal signal, the spectrum of the output signal