SU1224828A1 - Device for controlling information record channels - Google Patents

Abstract

The invention relates to the field of instrumentation and can be used in automatic control systems when recording analog signals on magnetic media. The purpose of the invention is to expand the functionality of the device. The device contains analog signal sensors 1 and 2, optocouplers 3 and 4, pulse-width modulators 5 and 6, diode 9 and 10, pulse amplifiers 11 and 12, limiters 13 and 14, filters 15 and 16 and scaling amplifiers 17 and 18. The device also contains controllable logical switches 7 and 8, registering system 19, memory block 20, comparing devices 21 and 22, control unit 23 and timer 24. Introducing new elements and forming new connections between elements of the device ensures switching of the analog signal depending on its level. 1 hp f-ly. 1 il. (/)

Description

The invention relates to instrument engineering and can be used in automatic control systems when recording analog signals on magnetic media.

The aim of the invention is to expand the functionality of the possibilities by providing switching of an analog signal depending on its level,

The drawing shows the block diagram of the device (for the case of item 2),

A device for controlling information recording channels contains sensors 1 and 2 of an analog signal, optrons 3 and 4, pulse-width modulators 5 and 6, controllable logic switches 7 and 8, diodes 9 and 10; amplifiers 11 and 12 pulses, limiters: 13 and 14, filters 15 and 16, scaling amplifiers 17 and 18, a recording system 19, a memory block 20 comparing devices 21 and 22, a control block 23 and a timer 24.

thirty

The device works as follows.

In the initial period of operation, it is necessary for each channel to record analog signals on a recording medium of a recording system 19 for a certain period of time tj. In this case, the control unit 23 receives signals for switching on the timer 24 and the recording system and the control signals 35 to the second inputs of the keys 7 and 8. The analog signals from the first outputs of the corresponding sensors 1 and 2 are converted to latitude tj t. At the end of this period, the values of the analog signals will be stored in the memory unit at time tj from the beginning of the second recording, and the measured analog signals will then be compared with these values.

Claims (2)

Invention Formula 1 o Device for controlling information recording channels, containing a pulse-width modulator, an optocoupler connected in series by amplifying modulators 5 and 6, and a pulse generator, a limiter, a filter they are blunt on the inputs of keys 7 and 8. Pulse width modulators are constructed so that with zero input signals, a square wave signal is present at their outputs, with positive input signals the duration of positive pulses is longer than the duration of negative pulses, and with negative input signals - vice versa. When there are control signals at the second inputs of the controlled logic keys 7 and 8, both keys are opened. Pulse amplifiers 11 and 12 restore the shape of the pulses coming from optocouplers 3 and 4, the amplitude of the pulses is stabilized by the limiters 13 and 14, the average value of the pulse signals for each channel 50 55 and a scaling amplifier, characterized in that, in order to extend the functionality by providing switching of the analog signal depending on its level, a timer, a control unit, an analog signal sensor, a comparison device, a controlled logic key, a diode, a recording unit are introduced into it and a memory unit, the timer input is connected to the first output of the control unit, and its output is connected to the first input of the named block, the analog signal sensor input is the device input, its first output is connected to Shih Rotne stroke-width modulator and the other - to the first input of comparator Filters are assigned to filters 15 and 16 and through scaling amplifiers 17 and 18 are recorded on the recording medium of the recording system 19, and also fed to the inputs of memory block 20. After a lapse of time t, the values of analog signals will be stored in the memory block at time t ;. Then at the signal from blo At the same time, these values are fed to the inputs of the comparison devices 21 and 22. At the same time, the other inputs of the comparison devices receive signals from sensors 1 and 2. The comparison devices are adjusted so that when the measured analog signal deviates from its value at time t by a certain amount For example, by 10%, a signal appeared at the outputs of these devices that went to the control unit. At the same time, control signals are received from the control unit to the recording system for recording analog signals during a period of time. neither tj t. At the end of this period, the values of the analog signals will be stored in the memory unit at time tj from the beginning of the second recording, and the measured analog signals will then be compared with these values. Invention Formula 1 o Device for controlling information recording channels, containing a pulse-width modulator, optocoupler, series-connected forces and a scaling amplifier, characterized in that, in order to extend the functionality by providing switching of the analog signal depending on its level, a timer, a control unit, an analog signal sensor, a comparison device, a controlled logic key, a diode, a recording unit are introduced into it and a memory unit, the timer input is connected to the first output of the control unit, and its output is connected to the first input of the named block, the analog signal sensor input is the device input, its first output is connected to Shih Rotne stroke-width modulator and the other - to the first input of comparator the device, the output of a pulse-width modulator through a controllable logic key, a diode and an optocoupler input circuit are connected to a common bus, the control key of a controllable logic key is connected to the second output of the control unit, the output circuit of the optoyou is connected to the input of a pulse amplifier, the output of the scaler amplifier is connected to the first inputs of the registering unit and the memory unit, respectively; the second input of the unit is connected to the third output of the control unit; the second input of the memory unit is connected to the fourth output The control unit and its output are connected to the second input of the control unit, the fifth output of which is connected to the second input of the comparison device, the output of the connected to the third input of the control unit. Editor A. Lezhnin Order 1954/49 Compiled by A. Eroshkevich Tehred N. Bonkalo Corrector M. 1aximishinets Circulation 543Subscribe VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 2248284 2. A device according to claim 1, characterized in that, p. In order to provide switching of analog signals depending on their 5 levels, n-1 comparison devices are connected to the control unit, the first inputs of which are connected to the second outputs of the n-1 sensors of analog signals, the outputs of which are connected to n-1 serial circuits from a wide-pulse modulator, controlled logic switch, diode, optocoupler, pulse amplifier, limiter, filter and J5 is a scaling amplifier; the outputs of the n-1 scaling amplifiers are connected to the corresponding n-1 inputs of the recording unit and the n-1 inputs of the memory unit, and n-1 outputs The control unit 20 is connected to the second inputs of the p-1 controlled logic keys.