RU2284650C1 - Rank filter - Google Patents

Abstract

FIELD: automatics and analog computer engineering, possible use for building functional nodes of analog computers, means of automatic adjustment and control, analog processors, etc.

SUBSTANCE: rank filter contains eight relators P 1₁-1₈ (dwg.1), each one of which contains comparator 2, connected by its output to first input of XOR element 3, second input of which is relator control input f, while output is connected to controlling input of closing and opening keys 4₁,4₂, outputs of which are combined and form the output of relator together, first and second inputs of which are inputs K 2, connected respectively to inputs of keys 4₁,4₂. Rank filter (dwg.1) by means of two control signals f₁,f₂ realizes selection of minimal, super-minimal, sub-maximal or maximal one of four input analog signals x₁-x₄ and has decreased hardware resource costs when compared to the prototype.

EFFECT: decreased hardware resource costs with preservation of functional capabilities of the prototype.

2 dwg

Description

The invention relates to automation and analog computing and can be used to build functional units of analog computers, means of automatic regulation and control, analog processors, etc.

Known rank filters (see, for example, figure 1 in the description of the invention to the patent of the Russian Federation 2171496, CL G 06 G 7/52, 2001), which using two control signals realize the choice of the minimum, supraminimum, submaximal or maximum of four analog input signals.

The reason that impedes the achievement of the technical result indicated below when using known rank filters includes high hardware costs.

The closest device of the same purpose to the claimed invention in terms of features is the rank filter adopted for the prototype (Fig. 1 in the description of the invention to RF patent 2192045, class G 06 G 7/52, 2002), which contains relators and with two control signals implements the choice of the minimum, supraminimum, submaximal or maximum of the four input analog signals.

The reason that impedes the achievement of the technical result indicated below when using the prototype includes high hardware costs.

The technical result of the invention is to reduce hardware costs while maintaining the functionality of the prototype.

релятора подключен к первому входу (i+3)-го релятора, а выходы четвертого, пятого и шестого реляторов соединены соответственно с первым, вторым входами седьмого и вторым входом восьмого реляторов, подключенных выходами соответственно к первому входу восьмого релятора и выходу рангового фильтра, первый и второй управляющие входы которого образованы соответственно объединенными входами управления первого - третьего, седьмого, восьмого и объединенными входами управления четвертого - шестого реляторов.The specified technical result in the implementation of the invention is achieved by the fact that in a rank filter containing eight relators, each of which contains a comparator connected by the output to the first input of the EXCLUSIVE OR element, the second input of which is the relay control input, and the output is connected to the control input of the closing and disconnecting keys, the outputs of which are combined and form the output of the relator, the first and second inputs of which are respectively the non-inverting and inverting inputs of the comparator, respectively, to the inputs of the closing and disconnecting keys, the first inputs of the first and third relators are connected to the first information input of the rank filter, the peculiarity is that the second inputs of the first, sixth, second, fourth relators are connected to the second and third information inputs of the rank filter, the fourth information input of which is formed by the combined second inputs of the third, fifth relators, the output of the i-th

the relator is connected to the first input of the (i + 3) -th relator, and the outputs of the fourth, fifth and sixth relators are connected respectively to the first, second inputs of the seventh and second input of the eighth relator, connected by the outputs respectively to the first input of the eighth relator and the output of the rank filter, the first and the second control inputs of which are formed respectively by the combined control inputs of the first - third, seventh, eighth and combined control inputs of the fourth - sixth relators.

In Fig.1 and Fig.2 presents respectively a diagram of the proposed rank filter and a diagram of the relator used in the construction of the specified filter.

подключен к первому входу релятора 1_i+3, выходы реляторов 1₄, 1₅ и 1₆ соединены соответственно с первым, вторым входами релятора 1₇ и вторым входом релятора 1₈, а выходы реляторов 1₇ и 1₈ подключены соответственно к первому входу релятора 1₈ и выходу рангового фильтра, первый и второй управляющие входы которого образованы соответственно объединенными входами управления реляторов 1₁-1₃, 1₇, 1₈ и объединенными входами управления реляторов 1₄-1₆.The rank filter contains relators 1 ₁ -1 ₈ . Each relator contains a comparator 2, connected by the output to the first input of the EXCLUSIVE OR 3 element, the second input of which is the relay control input, and the output is connected to the control input of the closing and disconnecting keys 4 ₁ and 4 ₂ , the outputs of which are combined to form the relay output, the first and the second inputs of which are respectively the non-inverting and inverting inputs of the comparator 2, connected respectively to the inputs of the keys 4 ₁ and 4 ₂ . The first inputs of the relators 1 ₁ -1 ₃ and the second inputs of the relators 1 ₁ , 1 _{6 are} connected respectively to the first and second information inputs of the rank filter, the third and fourth information inputs of which are formed respectively by the combined second inputs of the relators 1 ₂ , 1 ₄ and the combined second inputs of the relators 1 ₃ , 1 ₅ , relay output 1 _i

connected to the first input of the relator 1 _{i + 3} , the outputs of the relators 1 ₄ , 1 ₅ and 1 _{6 are} connected respectively to the first, second inputs of the relator 1 ₇ and the second input of the relator 1 ₈ , and the outputs of the relators 1 ₇ and 1 _{8 are} connected respectively to the first input relator 1 ₈ and the output of the rank filter, the first and second control inputs of which are formed respectively by the combined control inputs of the relators 1 ₁ -1 ₃ , 1 ₇ , 1 ₈ and the combined control inputs of the relators 1 ₄ -1 ₆ .

The work of the proposed rank filter is as follows. At its first and fourth information inputs, respectively, the analog signals (voltages) x ₁ -x ₄ to be processed are supplied; the necessary control signals f ₁ and f ₂ , f ₁ , f ₂ ∈ {0,1} are respectively fixed on its first and second control inputs. If at the control input of the relator there is a logical "0" (logical "1") and the signal at its first input is more or less than the signal at its second input, then key 4 _{1 is} respectively closed (open) or open (closed), and key 4 ₂ respectively open (closed) or closed (open). Therefore, if at the control input of the relator there is a logical "0" (logical "1"), then this relator will select at its output the largest (smallest) of the signals acting on its first and second inputs. Thus, the operation reproduced by the proposed filter is determined by the expression

where the symbols ∨ and · denote the operations max and min, respectively. Moreover, the proposed filter contains 8 relators. Note that the prototype includes 11 relators.

The above information allows us to conclude that the rank filter (figure 1) using two control signals implements the choice of the minimum, supraminimum, submaximal or maximum of the four input analog signals and has less hardware costs compared to the prototype.

Claims (1)

A rank filter containing eight relators, each of which contains a comparator connected by an output to the first input of an EXCLUSIVE OR element, the second input of which is a relator control input, and the output is connected to the control input of the closing and disconnecting keys, the outputs of which are combined to form the relay output, the first and the second inputs of which are the non-inverting and inverting inputs of the comparator, respectively, connected to the inputs of the closing and opening keys, the first inputs of of the third and third relators are connected to the first information input of the rank filter, characterized in that the second inputs of the first, sixth, second, fourth relators are connected respectively to the second and third information inputs of the rank filter, the fourth information input of which is formed by the combined second inputs of the third, fifth relators, i-th output

the relator is connected to the first input of the (i + 3) -th relator, and the outputs of the fourth, fifth and sixth relators are connected respectively to the first, second inputs of the seventh and second input of the eighth relator, connected by the outputs respectively to the first input of the eighth relator and the output of the rank filter, the first and the second control inputs of which are formed respectively by the combined control inputs of the first - third, seventh, eighth and combined control inputs of the fourth - sixth relators.

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