A resistance adjustment system

Abstract

The present invention provides a resistance adjustment system, comprising: a server, a control unit communicatively connected to the server, and a resistor array whose two ends are communicatively connected to the server and a device to be used, respectively. The server includes a processor and a memory storing a computer program. The control unit includes a circular platform, a partially annular positive plate, a fixing member, m first magnets, a support rod, a knob, a fixing rod, a second magnet, m mutually connected partially annular negative plates, and also stores a capacitor-relay correspondence table. When the processor executes the computer program, the following steps are implemented: when the knob is rotated to a preset knob position, a target capacitance value generated by the partially annular positive plate and the partially annular negative plate at that position is obtained; based on the capacitor-relay correspondence table, a target solid-state relay corresponding to the target capacitance value is obtained; and the target solid-state relay is switched to an operating state, thereby avoiding problems such as reduced accuracy caused by mechanical wear.

Description

Technical Field

[0001] The present invention relates to the field of resistors, and in particular to a resistor adjustment system. Background Art

[0002] Currently, knobs are manual components that are turned manually. Depending on the functional requirements, they are categorized into knobs capable of continuous, multiple-turn rotation and knobs capable of 360° rotation. Most knobs are resistive, meaning they mimic the rotary pulse generators of traditional resistive potentiometers. However, resistive knobs inevitably experience mechanical wear, leading to decreased accuracy and even functional failure over extended use. Summary of the Invention

[0003] In response to the above technical problems, the present invention adopts a technical solution: a resistance adjustment system, comprising: a server, a control unit communicatively connected to the server, and a resistor array with two ends respectively communicatively connected to the server and a device to be used;

[0004] The server includes a processor and a memory storing a computer program;

[0005] The resistor array includes N resistor sub-arrays connected in series, each resistor sub-array includes K resistor units connected in series, each resistor unit includes a resistor and a solid-state relay connected in parallel with the resistor; and the processor is in communication with the solid-state relay in each resistor unit;

[0006] The control unit includes a circular platform, and partially annular positive plates, a fixing member, m first magnets, a support rod, a knob, a fixing rod, a second magnet, and m mutually connected partially annular negative plates, all arranged on the same side of the circular platform;

[0007] In which, the partially annular positive plate is fixedly arranged on the circular platform, and the outer edge of the partially annular positive plate corresponding to the larger radius overlaps with the outer edge of the circular platform; the fixing piece is vertically fixed to the center of the circular platform for supporting the support rod, one end of the support rod is inserted into the fixing piece and is rotatably connected to the fixing piece, and the other end is fixedly connected to the knob; the support rod is also fixedly provided with the fixing rod parallel to the circular platform; m first magnets are evenly spaced and distributed on a circle with the fixing piece as the center, and a distance is set from the partially annular positive plate; the second magnet is fixed on the side of the fixing rod facing the circular platform, and the polarity of the opposite magnet surfaces of the first magnet and the second magnet is the same; m partially annular negative plates are fixed to the end of the fixing rod and facing one side of the circular platform;

[0008] Furthermore, the memory further stores a capacitor-relay correspondence table and a resistor array list A, wherein the capacitor-relay correspondence table stores the correspondence between the capacitance value and the working state of the solid-state relay, and the working state of the solid-state relay includes a normal working state and an abnormal working state; the resistor array list A={A1, A2, ..., A j ,…,A N}, A j ={A j,1 , A j,2 ,...,A j,k ,...,A j,K}, A j,k is the kth resistor unit in the jth resistor subarray, where j ranges from 1 to N, and k ranges from 1 to K; the capacitance value is the capacitance value generated by the partial annular positive plate and the partial annular negative plate;

[0009] When a processor executes a computer program, it performs the following steps:

[0010] S100, when the knob is turned to the preset knob position B i When B i The target capacitance value generated by the partial annular positive plate and the i-th partial annular negative plate;

[0011] S200, obtaining a target solid-state relay corresponding to a target capacitance value based on a capacitance-relay correspondence table;

[0012] S300, switches the target solid-state relay to normal working state.

[0013] The present invention has at least the following beneficial effects: based on this, by rotating the knob to a preset knob position, the target capacitance value generated by the partial annular positive plate and the partial annular negative plate at the knob position is obtained, and based on the capacitance-relay correspondence table, the target solid-state relay corresponding to the target capacitance value is obtained, and the target solid-state relay is switched to a normal working state, thereby realizing a non-contact knob. Compared with the resistive knob in the prior art, the present invention adopts a non-contact method, avoids mechanical wear, and thus avoids problems such as reduced accuracy caused by mechanical wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1A flowchart of a resistance adjustment system according to an embodiment of the present invention when executing a computer program;

[0016] Figure 2 A schematic diagram of a detection unit provided in an embodiment of the present invention.

[0017] Wherein, description of the accompanying drawings:

[0018] 1-circular platform, 2-partial annular positive plate, 3-fixing piece, 4-first magnet, 5-support rod, 6-knob, 7-fixing rod, 8-second magnet, 9-partial annular negative plate. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] An embodiment of the present invention provides a resistance adjustment system, which includes: a server, a control unit communicatively connected to the server, and a resistor array with two ends communicatively connected to the server and a device to be used.

[0021] The server includes a processor and a memory storing a computer program.

[0022] The resistor array includes N resistor sub-arrays connected in series, each resistor sub-array includes K resistor units connected in series, each resistor unit includes a resistor and a solid-state relay connected in parallel with the resistor; and the processor is communicatively connected to the solid-state relay in each resistor unit.

[0023] The control unit includes a circular platform 1, and partially annular positive plates 2, a fixing member 3, m first magnets 4, a support rod 5, a knob 6, a fixing rod 7, a second magnet 8, and m mutually connected partially annular negative plates 9, all arranged on the same side of the circular platform.

[0024] Specifically, m partial annular negative plates 9 are connected to each other based on the inner edge of the partial annular negative plate 9 to form a circle, and when any partial annular negative plate 9 corresponds to the partial annular positive plate 2, the inner edge of the partial annular negative plate 9 and the inner edge of the partial annular positive plate 2 overlap; therefore, it can be understood that the arc lengths of the inner edges corresponding to the m partial annular negative plates 9 are equal, and the inner edges corresponding to the m partial annular negative plates 9 are connected to each other to form a circle.

[0025] Furthermore, the memory also stores a partial list of annular negative plates C={C1, C2, ..., C i ,…,C m}, C i is the i-th partial annular negative plate 9, where i ranges from 1 to m;

[0026] Furthermore, the radius corresponding to the outer edge of the m partial annular negative plates 9 increases uniformly, that is, C i The outer edge corresponds to the radius RC i =i×(Rr) / m+r, wherein the radius of the outer edge of the partial annular positive plate 2 is R.

[0027] Among them, the partially annular positive plate 2 is fixedly set on the circular platform, and the outer edge of the partially annular positive plate corresponding to the larger radius overlaps with the outer edge of the circular platform 1; the fixing part 3 is vertically fixed to the center of the circular platform 1, used to support the support rod, one end of the support rod 5 is inserted into the fixing part 3, and is rotatably connected to the fixing part 3, and the other end is fixedly connected to the knob 6; the support rod is also fixed with the fixing rod parallel to the circular platform; m first magnets 4 are evenly spaced and distributed on a circle with the fixing part as the center, and a distance is set from the partially annular positive plate; the second magnet 8 is fixed on the side of the fixing rod 7 facing the circular platform 1, and the polarity of the opposite magnet surfaces of the first magnet 4 and the second magnet 8 are the same; m partially annular negative plates 9 are fixed at the end of the fixing rod 7 and facing the side of the circular platform 1.

[0028] Specifically, m first magnets 4 are arranged around the fixing member 3 at equal intervals, and the second magnet 8 is fixed on the fixing rod 7 on the side facing the circular platform 1, that is, the first magnet 4 and the second magnet 8 are opposite to each other, and the first magnet 4 and the second magnet 8 have the same polarity and repel each other. Therefore, when the second magnet 8 approaches any first magnet 4, it will be subjected to the repulsive force of the first magnet 4 until the second magnet 8 moves to the middle of the first magnet 4 adjacent to the above-mentioned first magnet 4. At this time, the repulsive forces on the second magnet 8 by the first magnet 4 and the second magnet 8 adjacent to the first magnet 4 reach a balance, and the second magnet 8 remains stable.

[0029] Furthermore, the preset knob position B iThe second magnet (8) is located above the middle of two adjacent first magnets (4) and is in the i-th position where the force is balanced, and the value range of i is 1 to m. It can be understood that the preset knob position is the position where the second magnet 8 is kept in balance by the repulsive force of the first magnet 4. Since there are m first magnets 4 and the m first magnets 4 are arranged around at equal intervals, there are m intermediate gaps between the m first magnets 4. The position of the second magnet 8 is above the intermediate gap. When the knob 6 is rotated, the second magnet 8 is driven to the position of the second magnet 8, that is, the preset knob position.

[0030] Furthermore, the memory further stores a capacitor-relay correspondence table and a resistor array list A, wherein the capacitor-relay correspondence table stores the correspondence between the capacitance value and the working state of the solid-state relay, and the working state of the solid-state relay includes a normal working state and an abnormal working state; the resistor array list A={A1, A2, ..., A j ,…,A N}, A j ={A j,1 , A j,2 ,...,A j,k ,...,A j,K}, A j,k It is the kth resistor unit in the jth resistor subarray, the value range of j is 1 to N, and the value range of k is 1 to K; the capacitance value is the capacitance value generated by the partial annular positive plate 2 and the partial annular negative plate 9.

[0031] Specifically, the resistance value of the resistance unit can be set according to actual needs.

[0032] Optional, .

[0033] Preferably, N=4; further, when N=4, A 1,1 =1Ω,A 1,2 =1Ω,A 1,3 =2Ω,A 1,4 =5Ω; A 2,1 =10Ω,A 2,2 =10Ω,A 2,3 =20Ω, A 2,4 =50Ω; it can be understood that when A j1 to A j4 The solid-state relay is in normal working state, and when j=1, it can generate a resistance value of 9 ohms; when A j1 to A j4 The solid-state relay is in normal working condition, and when j=2, it can generate a resistance value of 90 ohms.

[0034] Specifically, the capacitor-relay correspondence table stores the correspondence between the capacitance value and the working state of the solid-state relay, where the capacitance value is the capacitance value generated by the partial annular positive plate 2 and the partial annular negative plate 9. It can be understood that based on the different areas of the partial annular positive plate 2 and the partial annular negative plate 9, the working state of the solid-state relay with different resistance values ​​in parallel is determined according to the different capacitance values ​​generated, thereby achieving different capacitance values ​​according to the different positions of the knob 6, different working states of different solid-state relays, and realizing changes in resistance values.

[0035] Specifically, the normal working state is that the solid-state relay is in the open state, and the current flows to the next resistance unit through the resistor corresponding to the solid-state relay; the non-working state is that the solid-state relay is in the closed state, and the current flows to the next resistance unit through the solid-state relay.

[0036] Furthermore, the preset series rule can be used to arbitrarily j1 to A j4 Preferably, the preset series rule is set according to A j1 to A j4 The order of concatenation.

[0037] When a processor executes a computer program, it performs the following steps:

[0038] S100, when knob 6 is turned to the preset knob position B i When B i The target capacitance value generated by the partial annular positive plate 2 and the partial annular negative plate 9 is generated.

[0039] S200 , based on a capacitor-relay correspondence table, obtaining a target solid-state relay corresponding to a target capacitance value.

[0040] Specifically, in one embodiment of the present invention, the processor includes a capacitive sensor chip and an MCU. When the knob 6 is rotated to the knob position B i When the target capacitance value is generated, the capacitance detection chip obtains the target capacitance value, converts the target capacitance value into a digital signal, and transmits the digital signal to the MCU. The MCU obtains the target solid-state relay based on the capacitance-relay correspondence table.

[0041] S300, switches the target solid-state relay to normal working state.

[0042] Based on this, by turning the knob 6 to the preset knob position, the target capacitance value generated by the partial annular positive plate 2 and the partial annular negative plate 9 at the knob 6 position is obtained, and based on the capacitance-relay correspondence table, the target solid-state relay corresponding to the target capacitance value is obtained, and the target solid-state relay is switched to a normal working state, thereby realizing a non-contact knob 6. Compared with the resistive knob 6 in the prior art, the present invention adopts a non-contact type, which avoids mechanical wear, thereby avoiding problems such as reduced accuracy caused by mechanical wear.

[0043] Specifically, the arc length L0 of the inner edge of the partial annular negative plate 9 satisfies the following conditions:

[0044] 2πr / L0=w, w is an integer, wherein the radius of the inner edge of the partial annular positive plate 2 is r.

[0045] Specifically, the working process of the control unit is as follows: when the user turns any knob 6, the knob 6 drives the support rod 5 to rotate, and the support rod 5 drives m partial annular negative plates 9 and the second magnet 8 to rotate. When the user leaves the knob 6, the second magnet 8 is subjected to the repulsive force of the first magnet 4. In order to maintain force balance, the second magnet 8 will turn to the nearest preset knob position. In addition, in the process of turning to the nearest preset knob position, the second magnet 8 will drive the support rod 5 to rotate. The support rod 5 will drive the knob 6 and m interconnected partial annular negative plates 9 to rotate, so that the corresponding partial annular negative plate 9 is rotated to the position corresponding to the partial annular positive plate 2, and the partial annular positive plate 2 and the partial annular negative plate 9 correspond to each other, generating a capacitance value.

[0046] Furthermore, the server receives the capacitance values ​​generated by part of the annular positive plate 2 and part of the annular negative plate 9, and obtains the working status of the corresponding relay based on the capacitance-relay correspondence table stored in the memory, thereby controlling the corresponding relay to be in a normal working state, thereby generating the corresponding resistance value.

[0047] Although some specific embodiments of the present invention have been described in detail by way of example, it will be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will also be understood by those skilled in the art that various modifications may be made to the embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A resistance adjustment system, characterized in that: The system includes: a server, a control unit connected to the server, and a resistor array with two ends connected to the server and a device to be used; The server includes a processor and a memory storing a computer program; The resistor array includes N resistor sub-arrays connected in series, each resistor sub-array includes K resistor units connected in series, each resistor unit includes a resistor and a solid-state relay connected in parallel with the resistor; and the processor is communicatively connected to the solid-state relay in each resistor unit to control the operating state of each solid-state relay; The control unit comprises a circular platform (1), a partially annular positive plate (2) arranged on the same side of the circular platform, a fixing member (3), m first magnets (4), a support rod (5), a knob (6), a fixing rod (7), a second magnet (8), and m partially annular negative plates (9) connected to each other; The partially annular positive plate (2) is fixedly arranged on the circular platform, and the outer edge of the partially annular positive plate corresponding to the larger radius overlaps with the outer edge of the circular platform (1); the fixing member (3) is vertically fixed to the center of the circular platform (1) and is used to support the vertical rotation of the support rod (5), one end of the support rod (5) is inserted into the fixing member (3) in a rotating connection manner, and the other end is fixedly connected to the knob (6); below the knob, the support rod is also fixed with the fixing rod parallel to the circular platform, and the length of the fixing rod is at least equal to the diameter length of the circular platform; m first magnets (4) are evenly spaced and distributed on a circle with the fixing member as the center, and are set at a distance from the partially annular positive plate; the second magnet (8) is fixed on the fixing rod (7) on the side facing the circular platform (1), and the polarity of the opposite magnet surfaces of the first magnet (4) and the second magnet (8) is the same; m partially annular negative plates (9) are fixed on the end of the fixing rod (7) and on the side facing the circular platform (1); Furthermore, the memory further stores a capacitor-relay correspondence table and a resistor array list A, wherein the capacitor-relay correspondence table stores the correspondence between the capacitance value and the working state of the solid-state relay, and the working state of the solid-state relay includes a normal working state and an abnormal working state; the resistor array list A={A1, A2, ..., A j ,…,A N }, A j ={A j,1 , A j,2 ,...,A j,k ,...,A j,K }, A j,k is the kth resistor unit in the jth resistor subarray, where j ranges from 1 to N and k ranges from 1 to K; When a processor executes a computer program, it performs the following steps: S100, when the knob (6) is turned to the preset knob position B i When B i a target capacitance value generated by the partial annular positive plate (2) and the i-th partial annular negative plate (9); S200, obtaining a target solid-state relay corresponding to a target capacitance value based on a capacitance-relay correspondence table; S300, switches the target solid-state relay to normal working state.

2. The resistance adjustment system according to claim 1, wherein: Preset knob position B i The second magnet (8) is located above the middle of two adjacent first magnets (4) and is in the i-th position where the force is balanced, and the value of i ranges from 1 to m.

3. The resistance adjustment system according to claim 1, wherein: When the partially annular negative plate (9) and the partially annular positive plate (2) correspond to each other, the inner edge of the partially annular negative plate (9) and the inner edge of the partially annular positive plate (2) overlap.

4. The resistance adjustment system according to claim 1, wherein: K = 4, and A 1,1 = 1 Ω, A 1,2 = 1 Ω, A 1,3 = 2 Ω, A 1,4 = 5 Ω.

5. The resistance adjustment system according to claim 4, wherein: 。 6. The resistance adjustment system according to claim 3, wherein: The arc length L0 of the inner edge of the partial annular negative plate (9) satisfies the following conditions: 2πr / L0=w, w is an integer, wherein the radius of the inner edge of the partial annular positive plate (2) is r.

Images