CN214669276U - Three-redundancy rotary potentiometer capable of outputting digital signals - Google Patents
Three-redundancy rotary potentiometer capable of outputting digital signals Download PDFInfo
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- CN214669276U CN214669276U CN202120428122.6U CN202120428122U CN214669276U CN 214669276 U CN214669276 U CN 214669276U CN 202120428122 U CN202120428122 U CN 202120428122U CN 214669276 U CN214669276 U CN 214669276U
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Abstract
The utility model discloses a rotatory potentiometre of three redundancies that can output digital signal, which comprises an outer shell, pivot and signal output unit, the pivot is passed through the bearing and is installed in the shell, the signal output unit of installation in the shell includes insulation support, the collector ring, brush and resistive element, signal output unit is three and installs in the pivot in proper order, be equipped with the circuit board in the shell, be equipped with AD converting circuit on the circuit board, three signal output unit's brush is connected with AD converting circuit's analog signal input part through the analog signal line respectively, AD converting circuit's digital signal output and digital signal line's inner are connected, digital signal line's outer end passes the shell. The utility model discloses an install three signal output unit in proper order in same pivot, satisfied higher accuracy application demand, through set up the circuit board in the shell and set up AD converting circuit on the circuit board, satisfied the user demand that needs output digital signal.
Description
Technical Field
The utility model relates to a rotary potentiometer especially relates to a three-redundancy rotary potentiometer capable of outputting digital signals.
Background
A potentiometer is an adjustable electronic component that changes an output potential by changing an electrical parameter (resistance, capacitance, inductance, mutual inductance, self-inductance, magnetic flux, etc.) in a certain manner, and can convert a mechanical input amount (rotation angle or linear displacement) into an electrical output amount (resistance value, capacitance, inductance, mutual inductance, self-inductance, magnetic resistance, voltage value, output ratio, etc.) in a predetermined relationship therewith, and can also convert the electrical input amount into a mechanical output amount in a predetermined relationship therewith as necessary, but the application method is generally the former.
A rotary potentiometer is a potentiometer that converts a rotary mechanical input (rotation angle or linear displacement) into an electrical output (resistance, capacitance, inductance, mutual inductance, self-inductance, reluctance, voltage, output ratio, etc.) in a predetermined relationship with the rotary mechanical input. The traditional rotary potentiometer comprises a single-redundancy rotary potentiometer or a dual-redundancy rotary potentiometer, and has the following defects:
in application occasions requiring higher precision, the traditional single-redundancy and double-redundancy rotary potentiometers are difficult to meet the application requirements; the output signal of the traditional rotary potentiometer is an analog signal, generally a voltage signal, and the requirement of a user needing to output a digital signal is difficult to meet.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to provide a triple-redundancy rotary potentiometer capable of outputting digital signals in order to solve the above-mentioned problems.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
a three-redundancy rotary potentiometer capable of outputting digital signals comprises a shell, a rotating shaft and signal output units, wherein the rotating shaft is installed in the shell through a bearing, one end of the rotating shaft penetrates through the shell, the signal output units installed in the shell comprise insulation sleeves, collector rings, electric brushes and resistor bodies, the insulation sleeves are sleeved on the rotating shaft, the collector rings are sleeved on the insulation sleeves, the electric brushes are used for being matched with the resistor bodies to output variable electric signals, the resistor bodies are fixedly connected with the inner wall of the shell, the rotating shaft penetrates through a central through hole of the resistor bodies, the signal output units are three and are sequentially installed on the rotating shaft, a circuit board is arranged in the shell, an A/D conversion circuit is arranged on the circuit board, and the electric brushes of the three signal output units are respectively connected with analog signal input ends of the A/D conversion circuit through analog signal lines, and the digital signal output end of the A/D conversion circuit is connected with the inner end of a digital signal wire, and the outer end of the digital signal wire penetrates through the shell. The a/D conversion circuit, i.e., an analog/digital conversion circuit, is a conventional circuit that converts an analog signal into a digital signal.
Preferably, in order to facilitate connection of a power supply signal to the non-rotating resistor and output of a varying electrical signal from the non-rotating resistor, the brush includes a first brush and a second brush, the resistor is provided with an arc-shaped resistor operating strip, the slip ring is provided with an arc-shaped slip ring operating strip, the first brush is attached to the slip ring, is connected to the slip ring operating strip, and is in contact with the resistor operating strip, the second brush is attached to the resistor, and is in contact with the slip ring operating strip, and the second brush is connected to the analog signal line.
The beneficial effects of the utility model reside in that:
the utility model discloses an install three signal output unit in proper order in same pivot, form three redundant structures, satisfied higher accuracy application demand, through set up the circuit board in the shell and set up AD converting circuit on the circuit board, can be in this potentiometre with analog signal conversion for the required digital signal of user, the digital signal of output can directly be used by the user, has satisfied the user demand that needs output digital signal.
Drawings
Fig. 1 is a front cross-sectional view of a triple-redundancy rotary potentiometer capable of outputting digital signals.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1, the triple-redundancy rotary potentiometer capable of outputting digital signals of the present invention comprises a housing, a rotating shaft 1 and a signal output unit, wherein the rotating shaft 1 is installed in the housing through a bearing 3, and one end of the rotating shaft passes through the housing, the signal output unit installed in the housing comprises an insulation sleeve 6, a slip ring 8, a brush and a resistor 5, the brush comprises a first brush 7 and a second brush 10, the insulation sleeve 6 is sleeved on the rotating shaft 1, the slip ring 8 is sleeved on the insulation sleeve 6, the first brush 7 and the second brush 10 are used for cooperating with the resistor 5 to output a variable electrical signal, a curved resistor working band (not shown) is arranged on the resistor 5, a curved slip ring working band (not shown) is arranged on the slip ring 8, the first brush 7 is installed on the slip ring 8 and connected with the slip ring working band and contacts with the resistor working band, the second electric brushes 10 are arranged on the resistor body 5 and are contacted with the collector ring working belt, the resistor body 5 is fixedly connected with the inner wall of the shell, the rotating shaft 1 penetrates through a central through hole of the resistor body 5, the number of the signal output units is three, the signal output units are sequentially arranged on the rotating shaft 1, a circuit board 13 is arranged in the shell, an A/D (analog/digital) conversion circuit (not shown) is arranged on the circuit board 13, the second electric brushes of the three signal output units are respectively connected with the analog signal input end of the A/D conversion circuit through analog signal wires 12, the digital signal output end of the A/D conversion circuit is connected with the inner end of a digital signal wire 14, and the outer end of the digital signal wire 14 penetrates through the shell.
Also shown in fig. 1 is a more detailed structure as follows:
the shell comprises a shell base 2, a shell outer cylinder 11 and a shell cover plate 15, and the structures are conventional structures adopted according to actual needs; in order to facilitate stable installation of the resistor bodies 5 of the three signal output units, two inner shells 9 are sequentially installed in the outer shell, a clamping ring 4 installed on the rotating shaft 1 is arranged between the bearing 3 and the adjacent insulating sleeves 6, and the structures are adaptive conventional structures; in order to further improve the signal synchronization and the detection accuracy of the three signal output units, the gap between the two inner shells 9 is 0-0.02 mm, the gap between the outer shell cover plate 15 and the adjacent inner shell 9 is 0-0.02 mm, the gap between the outer shell base 2 and the corresponding bearing 3, the gap between the outer shell outer barrel 11 and the corresponding bearing 3 is 0-0.01 mm, the gap between the rotating shaft 1 and the bearing 3 is 0-0.006 mm, and the gaps are smaller than the gaps corresponding to the traditional method, so that the precision is improved.
As shown in fig. 1, when the device to be detected is used, the rotating shaft 1 is driven to rotate by the device to be detected, so as to drive the three insulating sleeves 6, the three slip rings 8 and the three first brushes 7 to synchronously rotate, the three first brushes 7 respectively contact and slide on the resistor body working belts of the three resistor bodies 5 to detect changed electric signals, the changed electric signals are respectively transmitted to the three second brushes 10 through the three slip ring working belts, and then are respectively transmitted to an a/D conversion circuit on a circuit board 13 through analog signal lines 12, analog signals (generally voltage signals) are converted into required digital signals, and then the digital signals are transmitted to an external controller through digital signal lines 14, so that the function of a rotary potentiometer is realized.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and is not to the limitation of the technical solution of the present invention, as long as the technical solution can be realized on the basis of the above-mentioned embodiment without creative work, all should be regarded as falling into the protection scope of the right of the present invention.
Claims (2)
1. The utility model provides a rotatory potentiometre of three redundancies that can output digital signal, includes shell, pivot and signal output unit, the pivot is installed through the bearing in the shell and its one end passes the shell, install in the shell signal output unit includes insulation support, collector ring, brush and resistive element, insulation support suit is in the pivot, the collector ring suit is in on the insulation support, the brush be used for with the resistive element cooperation is with the output change signal of telecommunication, the resistive element with the inner wall fixed connection of shell just the pivot passes the central through-hole of resistive element, its characterized in that: the three signal output units are sequentially arranged on the rotating shaft, a circuit board is arranged in the shell, an A/D conversion circuit is arranged on the circuit board, electric brushes of the three signal output units are respectively connected with an analog signal input end of the A/D conversion circuit through analog signal wires, a digital signal output end of the A/D conversion circuit is connected with an inner end of a digital signal wire, and an outer end of the digital signal wire penetrates through the shell.
2. The triple-redundancy rotary potentiometer according to claim 1, wherein the triple-redundancy rotary potentiometer comprises: the electric brushes comprise a first electric brush and a second electric brush, an arc-shaped resistor body working belt is arranged on the resistor body, an arc-shaped collector ring working belt is arranged on the collector ring, the first electric brush is installed on the collector ring and connected with the collector ring working belt and contacted with the resistor body working belt, the second electric brush is installed on the resistor body and contacted with the collector ring working belt, and the second electric brush is connected with the analog signal line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120428122.6U CN214669276U (en) | 2021-02-27 | 2021-02-27 | Three-redundancy rotary potentiometer capable of outputting digital signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120428122.6U CN214669276U (en) | 2021-02-27 | 2021-02-27 | Three-redundancy rotary potentiometer capable of outputting digital signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214669276U true CN214669276U (en) | 2021-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120428122.6U Active CN214669276U (en) | 2021-02-27 | 2021-02-27 | Three-redundancy rotary potentiometer capable of outputting digital signals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214669276U (en) |
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2021
- 2021-02-27 CN CN202120428122.6U patent/CN214669276U/en active Active
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