RU2192045C1 - Rank filter - Google Patents

Abstract

FIELD: automatics, analog computing technique, possibly development of functional units of analog computers, of apparatuses for automatic control and regulation, analog processors. SUBSTANCE: filter includes eleven relators. Each relator includes comparator, "Exclusive OR"- gate, opening and closing switches. EFFECT: enhanced fast response. 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 2124754, CL G 06 G 7/52, 1999), which provide the choice of the minimum, median or maximum of the three input analog signals.

 The reason that impedes the achievement of the technical result indicated below when using known rank filters includes limited functionality, due to the fact that processing of four input analog signals is not allowed.

 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 2171496, class G 06 G 7/52, 2001), which contains eleven relators and provides selection of the minimum, supraminimum, submaximum or maximum of the four input analog signals.

The reason that impedes the achievement of the technical result indicated below when using the prototype is its low speed, due to the fact that the maximum signal propagation delay time in the prototype is determined by the expression τ = 6τ _p , where τ _p is the delay time of the relator.

 The technical result of the invention is to improve performance while maintaining the functionality of the prototype.

релятора подключен к первому входу (i+4)-го релятора, выходы пятого, шестого и седьмого, восьмого реляторов соединены соответственно с первым, вторым входами девятого и первым, вторым входами десятого реляторов, подключенных выходами соответственно к первому и второму входам одиннадцатого релятора, входы управления первого - восьмого и девятого - одиннадцатого реляторов соединены соответственно с первым и вторым управляющими входами рангового фильтра.The specified technical result during the implementation of the invention is achieved by the fact that in a rank filter containing eleven relators, each of which is made in the form of a comparator, connected to the first input of the boolean element "exclusive OR", the second input of which is the control input of the relator, and the output is connected to the control input of the closing and opening keys, the outputs of which are combined and form the output of the relator, the first and second inputs of which are non-inverting and inverting inputs, respectively comparator, connected respectively to the inputs of the closing and disconnecting keys, the first inputs of the first - third and the output of the eleventh relators are connected respectively to the first information input and output of the rank filter, the feature is that the second inputs of the third - fifth and sixth - eighth relators are connected respectively to the third and fourth information inputs of a rank filter, the second information input of which is formed by the combined first input of the fourth and second inputs of the first and second relators, i-th output

the relator is connected to the first input of the (i + 4) -th relator, the outputs of the fifth, sixth and seventh, eighth relators are connected respectively to the first, second inputs of the ninth and first, second inputs of the tenth relator, connected by the outputs respectively to the first and second inputs of the eleventh relator, the control inputs of the first - eighth and ninth - eleventh relators are connected respectively to the first and second control inputs of the rank filter.

 The analysis of the prior art by the applicant, including a search by patent and scientific and technical sources of information and identification of sources containing information about analogues of the claimed invention, allowed to establish that the applicant did not find an analogue characterized by features identical to all the essential features of the claimed invention. The definition from the list of identified analogues of the prototype as the closest in the set of essential features of the analogue made it possible to identify the set of essential distinguishing features in relation to the applicant's technical result in the claimed device set forth in the claims. Therefore, the claimed invention meets the condition of "novelty."

To verify the compliance of the claimed invention with the condition "inventive step", the applicant conducted an additional search for known solutions in order to identify signs that match the distinctive features of the claimed device from the prototype. The search results showed that the claimed invention does not derive explicitly from the prior art for the specialist, since the influence of the transformations provided for by the essential features of the claimed invention on the achievement of the technical result is not revealed from the prior art determined by the applicant, in particular, the following transformations are not provided for by the claimed invention:
- addition of a known product by any known part (s) attached to it according to known rules to achieve a technical result in respect of which the effect of such additions is established;
- replacement of any part (s) of a known product with another known part to achieve a technical result, in respect of which the effect of such a replacement is established;
- the exclusion of any part (element) of the product with the simultaneous exclusion of the function due to its presence and the achievement of the usual result for such exclusion;
- an increase in the number of elements of the same type to enhance the technical result due to the presence in the tool of just such elements;
- the implementation of a known tool or part (s) of a known material to achieve a technical result due to the known properties of this material;
- creating a tool consisting of known parts, the choice of which and the connection between them are based on known rules, recommendations, and the technical result achieved in this case is due only to the known properties of the parts of this tool and the connections between them.

 The described invention is not based on a change in a quantitative characteristic (s), the presentation of such signs in relationship or a change in its appearance. This refers to the case when the fact of the influence of each of these characteristics on the technical result is known, and new values of these signs or their relationship could be obtained on the basis of known dependencies and patterns. Therefore, the claimed invention meets the condition of "inventive step".

 In FIG. 1 and 2, respectively, are a diagram of a proposed rank filter and a relator circuit used in constructing said filter.

соединен с первым входом релятора 1_i+4, выходы реляторов 1₅, 1₆ и 1₇, l₈ подключены соответственно к первому, второму входам релятора 1₉ и первому, второму входам релятора 1₁₀, а выходы реляторов 1₉ и 1₁₀ соединены соответственно с первым и вторым входами релятора 1₁₁, выход которого является выходом рангового фильтра, подключенного первым и вторым управляющими входами соответственно к объединенным входам управления реляторов 1₁-1₈ и объединенным входам управления реляторов 1₉-1₁₁.The rank filter contains relators l ₁ -l ₁₁ . Each relator is made in the form of a comparator 2, connected by an output to the first input of an EXCLUSIVE OR 3 Boolean element, the second input of which is a relator control input, and the output is connected to a control input of the closing and opening keys 4 ₁ and 4 ₂ , the outputs of which are combined to form the output of the relator, the first and second inputs of which are the non-inverting and inverting inputs of the comparator 2, respectively, connected to the inputs of the keys 4 ₁ and 4 ₂ , respectively. The first inputs of the relators 1 ₁ -1 ₃ and the second inputs of the relators 1 ₃ -1 _{5 are} connected respectively to the first and third information inputs of the rank filter, the fourth information input of which is formed by the combined second inputs of the relators 1 ₆ -1 ₈ , and the second information input is connected to the first the input of the relator 1 ₄ and the second inputs of the relators 1 ₁ , 1 ₂ , the output of the relator 1 _i

connected to the first input of the relator 1 _{i + 4} , the outputs of the relators 1 ₅ , 1 ₆ and 1 ₇ , l _{8 are} connected respectively to the first, second inputs of the relator 1 ₉ and the first, second inputs of the relator 1 ₁₀ , and the outputs of the relators 1 ₉ and 1 ₁₀ connected respectively to the first and second inputs of the relator 1 ₁₁ , the output of which is the output of a rank filter connected by the first and second control inputs respectively to the combined control inputs of the relators 1 ₁ -1 ₈ and the combined control inputs of the relators 1 ₉ -1 ₁₁ .

где символами ∨ и ∧ обозначены соответственно операции mах и min.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 are to be processed; at its first and second control inputs, the necessary control signals f ₁ and f ₂ , f ₁ , f ₂ ∈ {0,1} are respectively fixed. If there is a logical “0” (logical “1”) at the control input of the relator 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.

The above information allows us to conclude that the rank filter (figure 1) provides the choice of the minimum, supraminimum, submaximal or maximum of the four input analog signals and has a higher speed compared to the prototype, since the maximum signal propagation delay time in the specified filter is determined by the expression τ = 4τ _p , where τ _p is the delay time of the relator.

Thus, the above information indicates the fulfillment of the following set of conditions when using the claimed device:
- a tool embodying the claimed device in its implementation, is intended for use in industry, namely in the field of automation and analog computing as a functional unit of analog computers, special processors, etc .;
- for the claimed device in the form described in the independent clause of the claims, the possibility of its implementation using the means and methods described in the application or known prior to the priority date is confirmed;
- a tool embodying the claimed invention in its implementation, is able to ensure the achievement of the perceived by the applicant technical result.

 Therefore, the claimed invention meets the condition of "industrial applicability".

Claims (1)

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

the relator is connected to the first input of the (i + 4) -th relator, the outputs of the fifth, sixth and seventh, eighth relators are connected respectively to the first, second inputs of the ninth and first, second inputs of the tenth relator, connected by the outputs respectively to the first and second inputs of the eleventh relator, the control inputs of the first - eighth and ninth - eleventh relators are connected respectively to the first and second control inputs of the rank filter.

Images