SU764120A1 - Integrating vontage-to-code converter - Google Patents

Description

  3- 764120

Ovang HanpH5Ke fflfl pbstochnogo fbica, - on ig. 2; A graph explaining the process of converting AC voltage is shown in FIG. 3

Voltage converter - the code contains 1--5 switches, integrator 6, blocks 7, 8 terminals, generator-9 pulses, meter 10 intervals, sources 11, 12 exemplary direct and alternating current voltage, control device 13, device 14 subtraction and division, the source 15 of the bias voltage, the sources 16, 17 of the voltage of operation.

The device works as follows (Fig. 2). At the initial time, the integrator is 6 beats; it is kept in the initial state by the locking potential coming from the device 13 to the direct input of the operational amplifier of the integrator 6. At the same time, key 1 is closed and keys 2-5 are open. After removing the blocking potential from the onepaibioHoro i direct amplifier, the amplifier begins the integration process Ej. In this case, the voltage will become equal to EZ, the countdown will stop. The result of the measurement in the zide of the NO number is transferred to the device 14 and stored there. At the same time, by a signal received from 6.rioka 7, the blocking voltage will again arrive at the direct input of the operational amplifier of the integrator 6. It will flow until integrator 6 is reset. After this JQ integration process will start again. In the initial part, as in the previous cycle, only the voltage Ej is integrated, but then, after the voltage on the code of the integrator 6 exceeds the voltage Ej and the time is counted, the key 1 is closed: the key 2 is closed and the process starts integrating the sum of the voltages Ej and This process lasts for a time t specified by the device 13, after which the keys are returned to their original state and then the voltage EI- is again integrated At the moment; when the voltage at the output of the integrator reaches the value of SZG, the count рр11 (the lane stops and the duration of the integration interval j as a number is also remembered by device 14. The next integration cycle occurs the same as the previous one. sums of Ej and E g over time t integrates the sum of the stresses E and the Duration of this cycle of integration of H into the number N, is also remembered. Then the magnetism is ----.,.;, ..,:..; - ..: .., -: - “-“ - 7 --V --- ---..-.-..- -.,

CIM, in the same way. Produces alternate integration of the sum of the voltage EI and the other convertible voltages (in the case of a multi-channel converter). The voltage of the HIO current is converted into a code in the same way as the DC voltage. The only difference is that (see Fig. 3), the AC voltage is used as the reference voltage. frequency as the voltage to be converted (this is necessary to ensure the independence of the conversion coefficient from the frequency of the voltage to be converted), as well as

what is the sum of the stresses E, + E. "and E, + E"

o.iz

only one half cycle is integrated in one conversion cycle. The integration of these voltages is provided by the closure of keys 4 and 5.

The intervals are measured by counting the number of pulses of frequency F received from source 16 in the measured time interval. The device significantly corrects the effect of changes in the response time of the comparison blocks 7, 8 on the conversion result. This is due to the fact that the voltage at their inputs varies in the same direction and at the same speed. Therefore, the response delays of both comparison blocks are the same, and therefore, mutually compensated. In addition, the linearity of the initial integration segment in the proposed device is better than in the double integration device. This is due to the fact that the countdown of the integration time does not begin simultaneously with the start of integration, but somewhat after a nuclear event, i.e. after the integrator transients associated with the start of integration have almost ended

Claims (2)

Invention Formula The integrating converter is a code containing sources of reference DC and AC voltage, the outputs of which through the first and second keys are connected to the first input of the integrator, the bus of the sources of AC and DC signals through the third and fourth keys are connected to the first input of the integrator, outputs which are connected to the first inputs of the Sriyenn blocks, the second) inputs of which are connected to the sources of the threshold voltages, and the outputs are connected to the first and second inputs of the interval meter and from the first The second input of the device is Tranfora, the third input of which is connected to the source output of the model alternating current voltage i, the control output of the control device is connected to the control inputs of four keys, the output of the pulse generator is connected to the third input of the interval meter, characterized in that in order to increase the accuracy of the conversion, an additional key was inserted into it, the source of the bias voltage and the .576 ciBo subtraction and division device, with the output of the yulel spacing connected to the input of the device subtracted and division, with the output of the interval meter connected to the input of the subtraction and division device, the output of which is connected to the fourth input of the control device, the output of which is connected to the second input of the integrator, the third input of which is connected to the output of the bias voltage source and the first input connected to the common bus of the device, control 0 input of the additional key connected to the control output of the control device. Sources of information taken into account in the examination 1.Shlndind VM Digital digital electrical devices. M., Energie, J972, p. 161. 2. Gitis E. I. Transformers “information for electronic digital computing devices |. In. M., Energie, 1975, p. 375-379, fig. 8-6a (prototype). ffSp (8th inte zpamppa. Chu v v V M r L / s UMmf & pomtfpa I | i | j 1I. I fig.Z