SU575771A2 - Voltage-to-code converter - Google Patents

Description

one

The invention relates to computing, can be used in information-measuring systems.

A voltage converter is known in a code comprising a saw-tooth voltage generator, a null organ, a pulse generator, and a counter in which the voltage is converted into a code by counting the number of pulses in time interval 1

The disadvantage of this converter is a narrow range of functionality.

Closest to the proposed voltage converter is a code containing a zero-body, one input of which is connected to the input bus, the other - with the output of the saw-tooth generator, output with a key, a control unit, one input of which is connected to the input of the saw-voltage generator The other is connected to the input of a pulse generator, the output of which is connected via a switch to the input of a counter, a low-order cell whose input is connected to the output of an element I, one input of which is connected to the output of a zero-organ, the other

with the output of the control unit, the third with the output of the key 12.

However, the functional POSSIBILITY of such a converter is limited. The purpose of the invention is the expansion

device functionality and indication is achieved by the fact that a voltage converter into a code containing a null organ, a sawtooth voltage generator, a key, a control unit, a pulse generator, a counter, an N-uiaADjeiD cell, 3Jief eHT If, Two H elements are introduced, two digital setpoint switches, a Hi-converter, the outputs of the c-helix impulse E and the low-end outputs of the low-order bit are connected to the corresponding inputs of the first and second switches of the digital settings, the outputs of which

are connected respectively to the inputs of the first and second elements And, the additional input of the first element And is connected to the output of the zero-organ through the inverter, and the additional input of the second - directly.

In addition, two And elements and two flip-flops can be entered into the circuit, the first inputs of the first and second flip-flops being connected respectively to

Claims (2)

the outputs of the first and second elements And; a, the second inputs are cooTBeTCTBeiiHo with the outputs of the first and second additional elements AND, the inputs of which are connected respectively to the outputs of the first. and the second switches for setting the digital settings / additional elements AND are connected respectively with the additional inputs of the second and first elements I. Figure 1 shows the block diagram of the devices; Figure 2 presents timing diagrams explaining its principle of operation. The converter contains a zero-body 1, a generator 2 saw-tooth voltage, a control unit J, a generator of 4 pulses, a key 5, an AND 6 cell, a 7 G cell of a low discharge, a pulse counter of 8, an inverter 9, a switch 10 for setting the digital settings of the upper level, The switch 11 sets the digital settings of the lower level, the elements AND 12-1 triggers $ 1., 17. The device works as follows. From block 3 of control to generator 2 and element b, a start-pulse with a duration of -–- comes, where At is the period of the pulse of the gegger system 4. Generator 2 produces a linearly increasing voltage that is applied to the input of the zero-organ 1. To the second input null - orga III enters an analog signal. After a period of time at, a pulse of duration (2–1) ut is applied to the generator of 4 pulses (11 is the number of bits of the output code, except for the cell). The generator 4 pulses arrive through the public key 5 to the counter 8. At the moment of equality of the sawtooth and input voltage, the zero-organ 1 is triggered, the signal from it closes the key 5, and the pulses from the generator 4 cease to flow to the counter 8, the code on the counter 8 is proportional to time interval and, hardly, the input voltage. Element I 6 depletes the transfer of the cell 7. If the zero point of the organ 1 is coincident with the moment of arrival of the start-pulse or generator pulse 4, which allows for accurate synchronization in the start pulse and generator pulse 4 to increase the conversion accuracy, when the counter code reaches the set value setpoint values at the reference point in time, on all inputs of the switch, the unit signals appear that go to the W inputs of the elements I. Reference points t and t correspond to the setpoints of the lower Z and the top the levels are compared on the AND elements with the time interval t of the pulse arriving at N -) 1st inputs of U elements from the null organ 1 and the inverter. If the converted signal Uj exceeds the upper limit of the setpoint Uy, then at time ty on all outputs of the switch 10 on the N -th 1st input of the element AND 15, the Tf signal is a unit taken from the inverter 9. As a result of a logical comparison of the signals at the output of the element 15, a control signal is generated. If the signal being converted is less than the lower setpoint U, the zero-organ 1 is slave-. It eats up to time point tj, and at its output there appears a signal unit, which is fed to the N + 1 input element of AND 13. At time t, when a signal appears, the unit on all outputs of the switch 11 element AND 13 forms a control signal al The signals from the elements 13 and 15 include in the operating state the triggers 16 and 17, which form the relay control signals. Elements 12 and 14 work similarly to elements 13 and 15 and when the values of the signal to be converted are lower than the upper limit and higher than the lower limit of the setpoint, they form a reset signal to the second inputs of the triggers 16 and 17. Invention 1. Voltage converter to auth code , No. 211148, characterized in that, in order to extend the functionality, two elements K are introduced, two digital setting switches, an inverter, the outputs of the pulse counter and the low-order cell outputs are connected to the corresponding nepBoio inputs and the second switch sets the digital settings, the outputs of which are connected respectively to the inputs of the first and second elements And; the output of the zero-organ through the inverter is connected to the element And, and one of the inputs of the second element And is connected to the output of the zero-organ. 2. The converter according to claim 1, characterized in that, for the purpose of indication, two elements And two triggers are introduced into it, the first inputs of the first and second triggers respectively connected to the outputs of the first and second elements And, and the second inputs are connected respectively to . the outputs of the first and second additional elements And, the inputs of which are connected respectively to the outputs of the first and second switches, setting the digital settings, and the additional inputs of the first and second additional elements And connecting 1: respectively, the additional inputs of the second and first elements I. Sources infog, on attention at exttertn p:, gitis E.I. Information Converters for EHEV, M-Energie, 1972, p. 156. 2. Copyright certificate; No. 211148, H 03 K 13/20, 20.12.66,  SGT t. I