Differential potentiometer
By designing a differential potentiometer in electronic equipment, using the linkage between resistive coating and conductive coating, the automatic attenuation output of angle changes is achieved, which solves the problems of high differential calculation costs and cumbersome signal acquisition in the prior art, and simplifies the signal processing process.
Patent Information
- Application Number
- CN202421492147.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The prior art is costly when performing differential calculations of angle signals in electronic devices, signal acquisition and software adjustments are cumbersome, and a simple and efficient integrated device is lacking.
A differential potentiometer is designed. By setting two sets of potentiometers and sliding plates on the substrate, the linkage of the resistive coating and the conductive coating can achieve the function of automatic attenuation output of the angle change.
It realizes that while performing differential calculations of the angle signal in electronic devices, it automatically attenuates the input voltage signal proportionally, and keeps the reference input unchanged on the other side, simplifying the signal acquisition and software adjustment process.
Smart Images
Figure CN222883328U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electronic accessories, in particular to a differential potentiometer. Background Art
[0002] With the development of electronic applications, many electronic devices need to distribute angle signals in real time. Angle sensors can only output angle signals. When the change signal is distributed with the angle change, it is necessary to use computers and logic circuits to perform differential calculations on the angle signal and the input change signal. This is not only costly, but also requires very cumbersome signal acquisition and software adjustment. Therefore, a simpler, more efficient and integrated device is needed. Summary of the invention
[0003] In order to solve the above-mentioned problems, the utility model provides a differential potentiometer, which can automatically attenuate the output of one side of the changing input voltage signal according to the angle change ratio, while the output of the other side remains unchanged.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:
[0005] Two sets of potentiometers are arranged on the substrate, and two sliding pieces are arranged in linkage and driven by a rotating shaft; on the circular arc track of the sliding piece, half is arranged with a resistance coating, and the other half is arranged with a conductive coating, and the resistance coating and the conductive coating are connected in the middle; the other end of the conductive coating is connected to the signal input, and the other end of the resistance coating is connected to the adjustment resistor; the arc angles of the resistance coating and the conductive coating of the two potentiometers are the same, and the positions are arranged in opposite directions.
[0006] Based on the above scheme, the attenuated output voltage = [1-angle resistance / (resistor coating resistance+adjustment resistance)] x signal voltage.
[0007] Based on the above solution, the resistance of the conductive coating is close to 0 ohm.
[0008] Based on the above solution, the input signal can be a fixed DC voltage signal or a variable voltage control signal.
[0009] Based on the above solution, the adjustment resistor can be set as a fixed resistor or an adjustable resistor.
[0010] The beneficial effects of the utility model are that: the angle signals can be output separately, and the changing input voltage signal can be automatically attenuated proportionally according to the angle change on one side, while the reference input is kept unchanged on the other side. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural schematic diagram of a differential potentiometer.
[0012] Figure numerals: 1. substrate, 2-1. left resistor coating, 2-2. right resistor coating, 3-1. left sliding sheet, 3-2. right sliding sheet, 4-1. left conductive coating, 4-2. right conductive coating, 5. input, 6-1. left adjustment resistor, 6-2. right adjustment resistor, 7-1. left rotating shaft, 7-2. right rotating shaft, 8-1. left output, 8-2. right output. DETAILED DESCRIPTION
[0013] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings.
[0014] like Figure 1 As shown, a differential potentiometer is arranged on a substrate 1: a left resistor coating 2-1, a right resistor coating 2-2, a left sliding sheet 3-1, a right sliding sheet 3-2, a left conductive coating 4-1, a right conductive coating 4-2, a signal input 5, a left adjustment resistor 6-1, a right adjustment resistor 6-1, a left rotating shaft 7-1, a right rotating shaft 7-2, a left output 8-1, and a right output 8-2.
[0015] The left resistance coating 2-1 and the left conductive coating 4-1 are connected in the middle, the other end of the left resistance coating 2-1 is connected to the left adjustment resistor 6-1, and the other end of the left adjustment resistor 6-1 is grounded; the other end of the left conductive coating 4-1 is connected to the signal input 5. The left sliding sheet 3-1 is driven by the left rotating shaft 7-1 to slide on the left resistance coating 2-1 or the left conductive coating 4-1, and the signal is output by the left output 8-1.
[0016] The right resistance coating 2-1 and the right conductive coating 4-2 are connected in the middle, and the other end of the right resistance coating 2-1 is grounded via the right adjustment resistor 6-2; the other end of the right conductive coating 4-2 is connected to the signal input 5. The right sliding sheet 3-2 is driven by the right rotating shaft 7-2, slides on the right resistance coating 2-2 or the right conductive coating 4-2, and the signal is output by the right output 8-2.
[0017] The left sliding sheet 3-1 and the right sliding sheet 3-2 are arranged in linkage.
[0018] When the left sliding sheet 3-1 and the right sliding sheet 3-2 are in the middle position, the signal input 5 is outputted through the left conductive coating 4-1, the left sliding sheet 3-1, and the left output 8-1; and through the right conductive coating 4-2, the right sliding sheet 3-2, and the right output 8-2. Since the resistance of the conductive coating is close to 0 ohms, the input 5 signal voltage is equal to the left output 8-1 and the right output 8-2 voltage.
[0019] When the left sliding piece 3-1 and the right sliding piece 3-2 are shifted to the left, the signal input 5 is outputted through the left conductive coating 4-1, the left resistive coating 2-1, the left sliding piece 3-1, and the left output 8-1 respectively; and outputted through the right conductive coating 4-2, the right sliding piece 3-2, and the right output 8-2. The voltage of the left output 8-1 is divided by the left resistive coating 2-1, and the voltage is less than the voltage of the input 5, and the voltage of the right output 8-2 is equal to the voltage of the input 5 signal and remains unchanged.
[0020] Similarly, when the left sliding piece 3-1 and the right sliding piece 3-2 are offset to the right, the signal input 5 is outputted through the left conductive coating 4-1, the left sliding piece 3-1, and the left output 8-1; and through the right conductive coating 4-2, the right resistive coating 2-2, the right sliding piece 3-2, and the right output 8-2. The voltage of the left output 8-1 is equal to the voltage of the input 5 and remains unchanged, and the voltage of the right output 8-2 is divided by the right resistive coating 2-2 and is less than the voltage of the input 5 signal.
[0021] According to the formula: output voltage = [1-angle resistance / (resistance coating resistance + adjustment resistance)] x signal voltage. The larger the deflection angle of the sliding piece, the greater the angle resistance of the sliding piece, and the more the output voltage is attenuated.
[0022] By adjusting the resistance values of the left adjustment resistor 6-1 and the right adjustment resistor 6-2, the attenuation ratios of the left output 8-1 and the right output 8-2 can be adjusted respectively.
[0023] The utility model has the most obvious effect when applied to a changing input control signal. The changing input signal can be automatically adjusted to a certain attenuation ratio according to the offset angle of one side, while the other side remains unchanged, thereby achieving an automatic differential effect.
[0024] The present invention is not limited to the above-mentioned implementation scheme, but also includes linear potentiometers, including various deformed products obtained by anyone under the principle of the present invention, which all belong to the protection scope of the present invention.
Claims
1. A differential potentiometer, characterized in that: Two sets of potentiometers are arranged on the substrate, and two sliding pieces are arranged in linkage and driven by the rotating shaft; on the circular arc track of the sliding piece, half is provided with a resistance coating, and the other half is provided with a conductive coating, and the resistance coating and the conductive coating are connected in the middle; the other end of the conductive coating is connected to the signal input, and the other end of the resistance coating is connected to the adjustment resistor; The arc angles of the resistance coating and the conductive coating of the two potentiometers are the same and are set in opposite positions.
2. A differential potentiometer as claimed in claim 1, characterized in that: The conductive coating has a resistance close to 0 ohm.
3. A differential potentiometer as claimed in claim 1, characterized in that: The adjustment resistor can be set as a fixed resistor or an adjustable resistor.