A programmable capacitor array for field electrical detection

Abstract

The present invention proposes a programmable capacitor array for on-site electrical detection. The capacitor array includes a plurality of capacitors, and the plurality of capacitors constitute a layer module, and the layer module is connected to form a complete capacitor array through an interlayer connection circuit. The present invention can realize parallel, series, and series-parallel mixed output between multiple capacitors of various specifications, has a compact circuit structure and flexible and diverse capacitor connection output forms, and can realize automatic configuration of the capacitor array structure in combination with an STM32 single-chip microcomputer controller. The present invention can be applied to a variety of scenarios.

Description

Technical Field

[0001] The invention relates to the field of radio frequency, and in particular to a programmable capacitor array for on-site electrical detection. Background Art

[0002] Programmable capacitor arrays have many practical technologies in the field of radio frequency, but these programmable capacitor array technologies are not suitable for the various capacitance value requirements in the detection field. The traditional capacitor array has a simple layout and a loose structure, and it is impossible to systematically and conveniently exert the reset capability of the capacitor array. Based on this, the present invention proposes a novel capacitor array circuit network topology structure, which makes the capacitor array structure more compact and can easily realize the series-parallel output between capacitors of different specifications. Combined with the application of STM32 single-chip microcomputer controller, the automation of capacitor array connection output can be realized. Summary of the invention

[0003] The present invention proposes a capacitor array with programmable capacitance value for on-site electrical detection, which can realize parallel, series, and series-parallel mixed output between multiple capacitors of various specifications. It has a compact circuit structure and flexible and diverse capacitor connection output forms. Combined with the STM32 single-chip microcomputer controller, it can realize automatic configuration of the capacitor array output structure. It can be applied to a variety of scenarios, such as being used as a power factor compensation capacitor in transformer detection. The capacitor array circuit structure diagram is shown in the figure. Figure 1 shown.

[0004] The purpose of the present invention is achieved by at least one of the following technical solutions.

[0005] A programmable capacitor array for on-site electrical detection includes a plurality of capacitors, which form layer modules. The layer modules are connected through inter-layer connection circuits to construct a complete capacitor array.

[0006] Furthermore, the layer modules in the capacitor array are divided into a top layer, a middle layer and a bottom layer, wherein a plurality of middle layers may be provided to form a capacitor array having a plurality of layer modules.

[0007] Further, in the layer module, n capacitors are arranged horizontally in parallel, and the same-direction ends of adjacent capacitors are connected by adjacent circuits to form a series of capacitors, n≥5, which is determined according to actual needs and the scale of the capacitor array;

[0008] A horizontal main circuit is set up above and below the layer module; the upper horizontal main circuit is connected by a first switch and the adjacent circuit between the capacitor, a=(n+1) / 2, among which the first first switch is a two-position switch, and the rest are three-position switches, and the third position of the three-position switch is connected to the lower horizontal main circuit; the lower horizontal main circuit is connected to the adjacent circuit of the capacitor by a second switch, and the second switches are all two-position switches.

[0009] Further, in the layer module, one end of the first first switch is connected to the upper horizontal main circuit, and the other end is connected to one end of the first capacitor, the adjacent circuit between the other end of the first capacitor and the second capacitor is connected to the lower horizontal main circuit through the first second switch, the adjacent circuit between the second capacitor and the third capacitor is connected to the upper horizontal circuit through the second first switch, and so on, the adjacent circuit between the N-1th capacitor and one end of the Nth capacitor is connected to the upper horizontal main circuit through the Ath first switch, and one end of the Ath second switch is connected to the lower horizontal main circuit, and the other end is connected to the other end of the last Nth capacitor;

[0010] For the middle layer module, a short circuit connection is also made between the upper horizontal main circuit and the lower horizontal main circuit through a switch circuit.

[0011] Furthermore, the interlayer connection circuit in the capacitor array is provided with a first external main circuit and a second external main circuit; the upper horizontal main circuit in each layer module is connected to the first external main circuit through a third switch, and the third switch is a two-position switch; the lower horizontal main circuit in the bottom layer module is connected to the second external main circuit through a two-position switch, and the lower horizontal main circuits in the remaining layer modules are respectively connected to the upper horizontal main circuit in the next layer module and the second external main circuit through a three-position switch.

[0012] Furthermore, in the layer module, by closing the first first switch and the i-th second switch, 2i-1 capacitors can be connected in series to the circuit, i∈[1,a]; by closing the first first switch and closing the third position of the j-th first switch, 2j-2 capacitors can be connected in series to the circuit, j∈[2,a];

[0013] By closing the first first switch, the first second switch and the second first switch, two capacitors can be connected in parallel to the circuit; by closing the first first switch, the first second switch, the second first switch and the second second switch, three capacitors can be connected in parallel to the circuit; and so on, any number of capacitors can be connected in parallel to the circuit;

[0014] By combining the serial connection mode and the parallel connection mode in the layer module, a mixed series-parallel connection circuit of any number of capacitors can be realized by closing the corresponding first switch and the second switch.

[0015] Furthermore, between the modules of each layer, the third switch connected to the top layer module is closed, the two-position switch connecting the bottom layer module with the second external main circuit is closed, and the part of the three-position switch connecting the top layer and the middle layer modules connected with the upper horizontal main circuit in the next layer module is closed, so that the modules of the top layer, the middle layer, and the bottom layer can be connected in series;

[0016] The third switch connected to all layer modules is closed, the two-position switch connecting the bottom layer module with the second external main circuit is closed, and the part connected to the second external main circuit among the three-position switches connecting the top layer and the middle layer modules is closed, so that the top layer, the middle layer, and the bottom layer modules can be connected in parallel;

[0017] By combining the serial connection mode and the parallel connection mode between the layer modules, a mixed serial and parallel connection circuit of any number of layer modules or more is realized by closing the corresponding switches.

[0018] Furthermore, the capacitors used in the layer modules are all of the same specification.

[0019] Furthermore, different layer modules may have different specifications.

[0020] Furthermore, all switches in the programmable capacitor array can be connected to the microcontroller via controllable relay switches to realize automatic output control of the capacitor array.

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] (1) The present invention designs a programmable capacitor array based on the detection requirements of electrical equipment. Compared with the traditional capacitor array, it has a more compact circuit structure and can more conveniently realize the series-parallel switching access of capacitors.

[0023] (2) Automated capacitor array output control can be achieved by connecting a controllable relay switch to a microcontroller. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a circuit structure diagram of the "programmable capacitor array for field electrical detection" of the present invention. DETAILED DESCRIPTION

[0025] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the specific implementation of the present invention is described in detail below with reference to the accompanying drawings and examples.

[0026] Example:

[0027] A programmable capacitor array for field electrical detection, such as Figure 1 As shown, it includes multiple capacitors, and the multiple capacitors constitute layer modules. The layer modules are connected through inter-layer connection circuits to construct a complete capacitor array.

[0028] In this embodiment, Figure 1 As shown, the capacitor array includes three capacitor layer modules, namely a top layer K1, a middle layer K2 and a bottom layer K3.

[0029] In this embodiment, Figure 1As shown, in the layer module, 7 capacitors are arranged horizontally in parallel, and the same-direction ends of adjacent capacitors are connected by adjacent circuits to form a series of capacitors;

[0030] like Figure 1 As shown, C1 to C21 are all capacitors.

[0031] A horizontal main circuit is set up on the upper and lower layers of the module; the upper horizontal main circuit is connected to the adjacent circuit between the capacitors by using four first switches, and the lower horizontal main circuit is connected to the adjacent circuit of the capacitor by using four second switches; wherein, A 11 ~A 14 , A 21 ~A 24 and A 31 ~A 34 are the first switches in the top, middle, and bottom modules, respectively, and B 11 ~B 14 , B 21 ~B 24 and B 31 ~B 34 the second switches in the top, middle and bottom layer modules respectively;

[0032] In this embodiment, Figure 1 As shown, in the top layer module, the first switch A 11 The first one is a two-position switch, and the rest are three-position switches. The third position of the three-position switch is connected to the lower horizontal main circuit, and the second switches are all two-position switches.

[0033] In this embodiment, Figure 1 As shown, in the top layer module, the first switch A 11 One end is connected to the upper horizontal main circuit, and the other end is connected to one end of the first capacitor C1; the other end of the first capacitor C1 and the adjacent circuit between the second capacitor C2 are connected through the first and second switches B 11 Connect the lower horizontal main circuit, the adjacent circuit between the second capacitor C2 and the third capacitor C3 is connected through the second first switch A 12 The horizontal circuit is connected, and so on, the adjacent circuit between the sixth capacitor C6 and the seventh capacitor C7 is connected through the fourth first switch A 14 Connect the horizontal main circuit, the fourth second switch B 14 One end is connected to the lower horizontal main circuit, and the other end is connected to the other end of the last seventh capacitor C7;

[0034] For the middle layer module K2, a short circuit connection is also made between the upper horizontal main circuit and the lower horizontal main circuit via the switch circuit L2.

[0035] like Figure 1As shown, the interlayer connection circuit in the capacitor array is provided with a first external main circuit and a second external main circuit; the upper horizontal main circuit in each layer module is connected to the first external main circuit through a third switch, and the third switch is a two-position switch; the lower horizontal main circuit in the bottom layer module is connected to the first external main circuit through a two-position switch K O3 The lower horizontal main circuits in the remaining layer modules are connected to the upper horizontal main circuit in the next layer module and the second external main circuit through three-position switches.

[0036] In this embodiment, in the top layer module, the first switch A is closed. 11 and the i-th second switch B 1i , 2i-1 capacitors can be connected in series to the circuit, i∈[1,4], and the first switch A can be closed. 11 , the jth first switch A 1j The third position of is closed, and 2j-2 capacitors can be connected in series to the circuit, j∈[2,4];

[0037] Close the first switch A 11 , first and second switches B 11 and the second first switch A 12 , two capacitors can be connected in parallel to the circuit, and the first switch A can be closed. 11 , first and second switches B 11 , the second first switch A 12 and the second switch B 12 , three capacitors can be connected in parallel to the circuit, and so on, any number of capacitors can be connected in parallel to the circuit;

[0038] By combining the serial connection mode and the parallel connection mode in the layer module, a mixed series-parallel connection circuit of any number of capacitors can be realized by closing the corresponding first switch and the second switch.

[0039] Between each layer of modules, close the first and third switches K connected to the top layer module I1 , close the two-position switch K connecting the bottom layer module with the second external main circuit O3 , close the first three-position switch K connecting the top and middle layer modules O1 And the second three-position switch K O2 The part connected with the upper horizontal main circuit in the next layer module can realize the serial connection of the top layer, middle layer and bottom layer modules;

[0040] Close the third switches connected to all layer modules, including the first third switch K I1 , the second and third switches K I2 and the third switch K I3, close the two-position switch K connecting the bottom layer module with the second external main circuit O3 , closing the part of the three-position switch connected to the top layer and the middle layer modules that is connected to the second external main circuit, so that the top layer, the middle layer, and the bottom layer modules can be connected in parallel;

[0041] By combining the serial connection mode and the parallel connection mode between the layer modules, a mixed serial and parallel connection circuit of more than three layer modules of any number can be realized by closing the corresponding switches.

[0042] All switches in the programmable capacitor array can be connected to a microcontroller via a controllable relay switch to realize automatic output control of the capacitor array.

Claims

1. A programmable capacitor array for field electrical detection, comprising a plurality of capacitors, characterized in that: Multiple capacitors form layer modules, and the layer modules are connected through interlayer connection circuits to construct a complete capacitor array; the layer modules in the capacitor array are divided into a top layer, a middle layer and a bottom layer, wherein multiple middle layers can be provided to form a capacitor array with multiple layer modules; In the layer module, n capacitors are arranged horizontally in parallel, and the same-direction ends of adjacent capacitors are connected by adjacent circuits to form a series of capacitors, n≥5; A horizontal main circuit is set up at the top and bottom of each layer module; the upper horizontal main circuit is connected to the adjacent circuit between a first switches and capacitors, a=(n+1) / 2, wherein the first first switch is a two-position switch, and the rest are three-position switches, and the third position of the three-position switch is connected to the lower horizontal main circuit; the lower horizontal main circuit is connected to the adjacent circuit of the capacitor by a second switches, and the second switches are all two-position switches; in the layer module, one end of the first first switch is connected to the upper horizontal main circuit, and the other end is connected to one end of the first capacitor, the adjacent circuit between the other end of the first capacitor and the second capacitor is connected to the lower horizontal main circuit through the first second switch, and the adjacent circuit between the second capacitor and the third capacitor is connected to the upper horizontal circuit through the second first switch, and so on, the adjacent circuit between the N-1th capacitor and one end of the Nth capacitor is connected to the upper horizontal main circuit through the Ath first switch, and one end of the Ath second switch is connected to the lower horizontal main circuit, and the other end is connected to the other end of the last Nth capacitor; For the middle layer module, the upper horizontal main circuit and the lower horizontal main circuit are short-circuited by a switch circuit; the interlayer connection circuit in the capacitor array is provided with a first external main circuit and a second external main circuit; the upper horizontal main circuit in each layer module is connected to the first external main circuit through a third switch, and the third switch is a two-position switch; the lower horizontal main circuit in the bottom layer module is connected to the second external main circuit through a two-position switch, and the lower horizontal main circuits in the remaining layer modules are respectively connected to the upper horizontal main circuit and the second external main circuit in the next layer module through three-position switches; in the layer module, closing the first first switch and the i-th second switch can connect 2i-1 capacitors in series to the circuit, i∈[1,a], closing the first first switch and closing the third position of the j-th first switch can connect 2j-2 capacitors in series to the circuit, j∈[2,a]; By closing the first first switch, the first second switch and the second first switch, two capacitors can be connected in parallel to the circuit; by closing the first first switch, the first second switch, the second first switch and the second second switch, three capacitors can be connected in parallel to the circuit; and so on, any number of capacitors can be connected in parallel to the circuit; By combining the serial access mode and the parallel access mode in the layer modules, any number of capacitors can be connected in series and parallel in a mixed circuit by closing the corresponding first switch and the second switch; between the modules, the third switch connected to the top layer module is closed, the two-position switch connecting the bottom layer module to the second external main circuit is closed, and the part of the three-position switch connecting the top and middle layer modules that is connected to the upper horizontal main circuit in the next layer module is closed, so that the top, middle and bottom layer modules can be connected in series; The third switch connected to all layer modules is closed, the two-position switch connecting the bottom layer module with the second external main circuit is closed, and the part connected to the second external main circuit among the three-position switches connecting the top layer and the middle layer modules is closed, so that the top layer, the middle layer, and the bottom layer modules can be connected in parallel; By combining the serial connection mode and the parallel connection mode between the layer modules, a mixed serial and parallel connection circuit of any number of layer modules or more is realized by closing the corresponding switches.

2. A programmable capacitor array for on-site electrical detection according to claim 1, characterized in that: The capacitors used in the layer modules are of the same specification.

3. A programmable capacitor array for field electrical detection according to claim 1, characterized in that: Different layer modules may have different specifications.

4. A programmable capacitor array for on-site electrical detection according to any one of claims 1 to 3, characterized in that: All switches in the programmable capacitor array can be connected to a microcontroller via a controllable relay switch to realize automatic output control of the capacitor array.

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