Multidimensional functional converter

 

(57) Abstract:

The invention relates to functional converters and can be used in the systems of accounting, planning and operational management in solving problems of economic calculation and storage of the values of the moving average to signal measurement information. The invention allows to increase the precision of the signal Converter measuring Informatics, i.e., to improve the accuracy of simultaneous processing of multiple signals due to the fact that each layer of the multi-function Converter range of variation of the input signal SVNinverter increments by at least an order of magnitude smaller than the range of change of the signals VN. For this purpose, the circuit of the device is made up of several converters increments, each of which consists of the scaling unit (7, 13, 19 N), the delay unit (4, 10, 16 N), Comparer (5, 11, 17N), integrator (6, 12, 18 N), and the input of each delay blocks connected to the second input of the corresponding block of comparison. 1 Il.

The invention relates to functional converters and can be used in the systems of accounting, planning and operational management of the ass is upmost signal measurement information VI, VII, ..., VNpre-ordered, for example, in ascending order of their average level, and the ranges of their variation are close to each other.

Known one-dimensional transducer implemented in the form of a series connection of the delay block, the first integrator and block comparison, the second integrator, the input of which is connected to the input of the delay unit and to the input of the Converter, and the output of the second integrator connected to the second positive input of the comparison, the output of which is connected to the inverter output. Simultaneous processing of multiple (N) of the signals is possible if we use N converters [1].

The disadvantage of this Converter is the low accuracy of the transformation.

The closest in technical essence is a one-dimensional transducer [2], implemented as a series connection of the delay block, the block comparison and integrator and the input of the delay block is connected to the input of the Converter and to the second positive input of the comparison, and the output of the integrator is connected to the inverter output. Simultaneous processing of N signals can be carried out with the use of N converters.The purpose of the invention to increase the accuracy of the transducer signal measurement information.

The aim is achieved in that in a multidimensional functional Converter comprising N units of delay, N units of comparison, N integrators,and the first and second inputs of the i-th block of comparison are connected respectively with the input and output of the i-th delay unit, the output of the i-th block of comparison is connected to the input of the i-th integrator entered N adders, N additional units of comparison, the first and second sources of reference voltages, N blocks, scaling, and output the i-th integrate the Converter, the first input of the i-th additional unit of comparison is connected with the i-th input of the Converter, and the output to the input of the i-th delay unit, the second input of the first additional unit of comparison is connected to the output of the first voltage reference, a second input of the i-th additional unit of comparison, except the first, is connected to the first input of the (i-1)-th additional unit of comparison, the second input of the first adder connected to the output of the second voltage reference and the second input of the first adder, except the first, is connected to the output of the (i-1)th adder.

The introduction of a range of new blocks and connections allows using the same converters as in the prototype, to significantly improve the accuracy of simultaneous processing of multiple signals measuring information due to the fact that each layer of the multidimensional functional Converter range of variation of the input signal VNinverter increments by at least an order of magnitude smaller than the range of change of the signal VN.

The drawing shows the functional scheme of the Converter, where the following notation:

Vo- reference input multidimensional functional changes associated with the first output signal multidimensional functional Converter, coming to the first input of the first adder;

VI, VII, ..., VNinput multidimensional functional Converter;

- increment the input SIG-

signals on the first, second and

N-th layers of the multidimensional

functional conversion

of the user;

YI, YII, ..., YN- output signals of the scaling blocks respectively the first, second and N-th layers of the transducer;

YI, YII, ..., YN- output signals multidimensional functional Converter.

Multidimensional functional Converter comprises a second source 1 constant signal, the first source 2 constant signal, the first additional block 3 comparison of the first unit 4 delays the first block of 5 comparisons, the first integrator 6, the first scaling unit 7, the first adder 8, the second additional block 9 of the comparison, the second delay block 10, the second block 11 comparison, the second integrator 12, the second scaling unit 13, the second adder 14, the N-th additional block 15N comparison, the N-th unit 16N delay, the N-th block 17N comparison, N-th integrator 18N, the N-th scaling unit 19N, the N-th adder 20N.

The input signal measurement information VI, VII, ..., VN is varicella these signals ordered, for example, in ascending order of their average levels

VcfI< VcfII< VcfN.

The signal VIsupplied to the second positive input of the first additional block 3 comparison, where, when comparing with the incoming first negative input with a reference signal Voformed using a second source 1 constant signal, produces at its output a difference signal VI= VI- Voo.The signal VIis supplied to the second positive input of the first block 5 comparison and through the first block 4 delay, after a time equal to the interval cutofffrom,served on the first negative input of the first block 5 comparison. As a result, the output unit 5, a signal is generated V-1(1-e) , which is fed to the input of the first integrator 6. The output signal of the first integrator 6 1-lVIwhere C is the speed of integration, is fed to the input of the first scaling unit 7, where it is multiplied by a constant, equal , thereby forming at its output a signal 1-lVIabout the moving average in the range increments VI. This signal is applied to the second input of the first adder 8, where it is summed with the reference signala 8 and respectively output the first layer of the multidimensional functional transducer signal

YI= Yo+ 1-lVIthat corresponds to sliding averaging of the signal VIprovided that the first source 2 constant signal generates at its output the signal Yoassociated with the signal Voratio

Yo= CVo.

Simultaneously with the signal VIto the second input of the multidimensional functional Converter and respectively to the second positive input of the second additional unit 9 comparison signal VII. This signal is subtracted signal VIfrom the first entrance of the multidimensional functional Converter is fed to the first negative input unit 9 a comparison, forming at its output a difference signal VII= VII- VI. This signal is fed to the input chains of the second unit 10 delays the second unit 11 comparison of the second integrator 12, the second scaling unit 13 where it is converted according to the same scheme, as on the first layer of the multidimensional functional Converter, and thereby generates a second output of the scaling unit 13 signal

YII= 1-lVII.

This signal is applied to the second input of the second adder 14, where it is summed with the signal YIto what about the Converter. Thus, at the output of the second adder 14, and accordingly the output of the second layer of the multidimensional functional Converter, a signal is generated that is equal to

YII= YI+ 1-lVIIthat corresponds to sliding averaging of the signal VII.

Similarly processed signal V on the following, including the last N-m, the layers of the multidimensional functional Converter. Here, the output of the N-th additional unit 15 N comparison, a signal is generated to the difference VN= VN- VN-1by subtracting from the signal VNcoming through N-th input multidimensional functional Converter, the second positive input of the N-th additional unit 15 N comparison signal VN-1supplied to the first negative input of the N-th additional unit 15 N comparison with (N-1)-th entry of the multidimensional functional Converter. Ultimately, the output of the N-th layer of the multidimensional functional Converter, a signal is generated

YN= YN-1+ 1-lVNthat corresponds to sliding the averaging intervalfromsignal VN.

Described multidimensional functional Converter based on analogue elements, otstranennogo with digital elements to limited capacity. In addition, this Converter is workable not only for the case when the conversion signal on each layer by using a moving average, but also for any other transformations.

Device two sources of constant signal, multiple units of comparison and multiple adders allows you to organize the processing of input signals VNon each layer in increments in relation to the input signals VN-1the previous layer, which ultimately improves the accuracy of their transformation.

To prove that specify conditions for the functioning of the Converter prototype and the proposed multidimensional functional Converter.

The input signals VI, VII, ..., VNboth transducers are arranged in ascending order of their average levels. The signal Vocharacterized by the base level of the signal VI, it corresponds to the signal Yo.

The range of change of the signals VNand YN(N=) significantly (by at least an order of magnitude) smaller than the range of change of the signals VNand YN((N= 1,)) (1).

The operator of the current average, which is implemented as conversions consider he realized with error so that the module of amplitude-phase characteristics can vary in the range

IN() IN( ).

Error Ywhen converting the signals V using the moving average operator is completely determined by the value In( ).

Conversion To(S) is much more complicated operations of summation and subtraction. So take the condition

CV<<Y, (2) whereC,Vaccordingly, the conversion error signal in blocks of summation and subtraction.

For these conditions to assess the accuracy of the realization of the signals YI, YII, ..., YNusing Converter prototype and the proposed multidimensional functional Converter.

For Converter-prototype output signal for any offline "layer" is

YN= VN{B(S) + B(S)} = VNB(S) +

+ VNB(S) = VNB(S) +N(3)N= VN+ B(S). (4)

For the proposed multidimensional functional transducer output signal is equal to

for the first layer

YI= Yo+ VIB(S) +lwhereI= VI+ B(S) +VI(B(S) + B(S)) +CI,

for the second layer

YII= Y

x x {(B(S) + B(S)} + (CI+CII)

For the N-th layer

YN= Yo+ {VN- Vo} B(S) +NwhereN= B(S)Vi+{B(S)+B(S)} + ic. (5)

Separated from the expression (4) component

y= B(S) Vithat according to condition (2) is denoted byY.

Given the condition (3) it turns out that for the proposed multidimensional functional Converter errorNfor the last N-th layer will be greatest in relation to other layers and to determine componentY, i.e.

N= B(S)Vi. (6)

Comparing expressions (4) and (6) note that if errorNfor a transformer of the prototype depends on the absolute value of the input signal VNfor the proposed multidimensional functional Converter from the sum of the increments of all input signals, i.e., Vi. Given the conditions (1), note that for the first few layers of the proposed Converter error of a given transformation is substantially less than for the Converter prototype. The practical applicability of the proposed Converter from the point of view of the accuracy of its implementation compared with the prototype looks like about(7) is written

N V < VN.

Then the number of layers N, the output signals of which the accuracy is preferable with respect to the respective output signals of the prototype, are determined in accordance with the expression

N < .

For example, if we assume that N = 3 and record in accordance with condition (1) that VN= 0,1 VNthen the maximum errorIIItaking place on the third output of the multidimensional functional Converter at least 3 times smaller than the error on any "layer" of the Converter prototype.

MULTIDIMENSIONAL FUNCTIONAL CONVERTER comprising N units of delay, N units of comparison, N integrators, and the first and second inputs of the i-th block of comparison are connected respectively with the input and output of the i-th delay unit, the output of the i-th block of comparison is connected to the input of the first integrator, wherein, to improve conversion accuracy, it introduced N adders, N additional units of comparison, the first and second sources of reference voltages, N blocks, scaling, moreover, the output of the first integrator through the i-th block scale connected to the first input of the first adder, the output of which is connected with the i-th Converter output, the first input of the i-th updat the d input of the first additional unit of comparison is connected to the output of the first voltage reference, the second input of the i-th additional unit of comparison, except the first, is connected to the first input of the (i-1)-th additional unit of comparison, the second input of the first adder connected to the output of the second voltage reference and the second input of the first adder, the first - output (i-1)-th adder.

 

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