SU371681A1 - DEVICE FOR TRANSFORMING DIGITAL CODES IN FREQUENCY - Google Patents

Description

The invention relates to the field of automation, computing and telemechanics. In the practice of using digital devices, there is a need to obtain a product or ratio of digital codes. Devices are known for converting a digital code into a pulse frequency, comprising a frequency divider, a valve, a counter, a generator whose output is connected to the input of the first frequency divider, and the output of the valve is connected to the input of a counter, the outputs of which bits are connected to the inputs of the second frequency divider. In addition, devices are known in which the task of multiplying and dividing codes is solved with outputting the result in the form of codes or a finite number of pulses. In solving this problem, in some devices of automatic control, control and automatic control, it is necessary to have a continuous sequence of pulses whose frequency is a function of two quantities specified in the form of digital codes. The proposed device allows the functionality of the device to be extended by converting digital codes to a pulse frequency proportional to the product or ratio of the codes. The drawing is a block diagram of the device described. To obtain a frequency proportional to the product of digital codes, the output of oscillator 1 is connected to the counting input of frequency divider 2, which divides the frequency of the generator nmuls by the number supplied to the numeric inputs of divider 2 as a digital code. At the output of the divider, a sequence of pulses with a frequency is obtained. A-L This sequence of pulses through switch 5 (position I) is fed to the counting input of frequency divider 4, in which the frequency fi is divided by the number N2, also received as a digital code on the numerical inputs of divider 4. The output of the divider is a pulse sequence with frequency. - /: - This sequence of pulses through -switch 3 is fed to the input of veytil S, which is opened at time T. The output of the plug is connected to the counting input of counter 6, in which a number equal to

NI N-2

The number is fed to the numerical inputs of the third frequency divider 7, which operates in the same way as the first two dividers. Frequency pulses from the generator arrive at the counting input of the frequency divider 7. At the output of frequency divider 7, a sequence of pulses is obtained with a frequency

g- 2 NI-N,

 / UZ T

where -F is the frequency, is proportional to the product of the specified digital codes.

To obtain a frequency proportional to the ratio of digital codes, a sequence of frequency pulses from frequency divider 2 through switch 3 (position II) is fed to the counting input of frequency divider 7. A generator output J is connected to the counting input of frequency divider 4, and the output of the divider is pulse train with frequency

This sequence of pulses is fed to the input of the valve 5, opened for the time T, and through the valve to the counting input of the counter 6, in which the number

N, h-t J-t.

yVa

The number N4 is applied to the numerical inputs of frequency divider 7, and at the output of the frequency divider a sequence of pulses is obtained with frequency.

/. /

N2

NI-T / V

where FZ is the frequency, proportional to the ratio of the specified digital codes.

In position III of switch 3, the output of frequency divider 7 is a pulse train with frequency.

/ 3, -.

where FZ is the frequency proportional to the given NI digital code.

Subject invention

A device for converting digital codes into a pulse frequency comprising a frequency divider, a gate, a counter, a generator, the output of which is connected to the input of the first frequency divider and the output of the gate is connected to

the counter input whose bit outputs are connected to the inputs of the second frequency divider, characterized in that, in order to expand the functionality of the device, an additional switch and a frequency divider are introduced into it, the input of which is connected to the output of the generator and the first frequency divider through the switch - through the switch it is connected to the inputs of the valve and the second frequency divider, and the outputs of the generator and the first frequency divider are connected respectively to the inputs of the second frequency divider and the fan cut switch.