CN211791258U - Anti-interference circuit for magnetic induction rocker potentiometer - Google Patents
Anti-interference circuit for magnetic induction rocker potentiometer Download PDFInfo
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- CN211791258U CN211791258U CN202020424478.8U CN202020424478U CN211791258U CN 211791258 U CN211791258 U CN 211791258U CN 202020424478 U CN202020424478 U CN 202020424478U CN 211791258 U CN211791258 U CN 211791258U
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Abstract
The utility model relates to the technical field of potentiometers, in particular to an anti-interference circuit for a magnetic induction rocker potentiometer, which comprises a magnetic induction module arranged on a circuit board, wherein the magnetic induction module comprises a magnetic induction chip, a main processor, a first filter circuit and a pull-up resistor component; alternating current voltage and interference signals in the direct current voltage are filtered by the first filter circuit, so that the magnetic induction chip can stably operate, and the performance of the magnetic induction rocker potentiometer is improved; the control port, the output port and the interrupt port of the magnetic induction chip are kept at high levels during the idle period through the pull-up resistor assembly, so that the magnetic induction chip is prevented from being interfered by the outside during the idle period to cause false start, and the anti-jamming capability of the magnetic induction chip is improved.
Description
Technical Field
The utility model relates to a potentiometre technical field specifically, relates to an anti jamming circuit for magnetic induction rocker potentiometre.
Background
At present, a magnetic induction rocker potentiometer is used on the market to replace a traditional rocker potentiometer, the magnetic induction rocker potentiometer is used for detecting the change of the magnetic field intensity caused by the shaking of a magnet, and the change of the magnetic field intensity is converted into an electric signal so as to achieve the purpose of controlling electronic equipment.
Be provided with the circuit board in the magnetic induction rocker potentiometer, be provided with the magnetic induction chip on the circuit board, but do not set up pull-up resistance and filtering component in the circuit board of current magnetic induction rocker potentiometer, this has just led to current magnetic induction rocker potentiometer to have some problems when using:
1. the magnetic induction chip is easily interfered by the outside, so that the bus of the magnetic induction chip is at a low level during an idle period, and the magnetic induction chip is interfered by the outside to be started by mistake;
2. the input voltage of the magnetic induction chip is mixed with direct current and alternating current, so that the magnetic induction chip is unstable in operation, and the use of the magnetic induction rocker potentiometer is influenced.
Therefore, it is desirable to provide an anti-jamming circuit for a magnetic inductive rocker potentiometer that addresses the deficiencies of the prior art.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides an anti-jamming circuit for a magnetic induction rocker potentiometer.
The technical scheme of the utility model as follows:
an anti-interference circuit for a magnetic induction rocker potentiometer comprises a magnetic induction module arranged on a circuit board, wherein the magnetic induction module comprises a magnetic induction chip, a main processor, a first filter circuit and a pull-up resistor assembly, one end of the first filter circuit is electrically connected with the negative end of the magnetic induction chip, one end of the first filter circuit is electrically connected with a fifth port of the main processor, the other end of the first filter circuit is electrically connected with the positive end of the magnetic induction chip, the positive end of the magnetic induction chip is electrically connected with the first port of the main processor, a reset port of the magnetic induction chip is electrically connected with a fourth port of the main processor, one end of the pull-up resistor assembly is electrically connected with the magnetic induction chip, and the other end of the pull-up resistor assembly is electrically connected with the main processor.
Preferably, the first filter circuit includes at least one first capacitor, one end of the first capacitor is electrically connected to the negative electrode terminal of the magnetic induction chip, and the other end of the first capacitor is electrically connected to the positive electrode terminal of the magnetic induction chip.
Preferably, the pull-up resistor component includes a first pull-up resistor, a second pull-up resistor and a third pull-up resistor, a control port of the magnetic induction chip is electrically connected with one end of the third pull-up resistor, one end of the third pull-up resistor is electrically connected with a third port of the main processor, the other end of the third pull-up resistor is electrically connected with the first port of the main processor, the output port of the magnetic induction chip is electrically connected with one end of the second pull-up resistor, one end of the second pull-up resistor is electrically connected with the second port of the main processor, the other end of the second pull-up resistor is electrically connected with the first port of the main processor, and an interrupt port of the magnetic induction chip is electrically connected with one end of the first pull-up resistor, and the other end of the first pull-up resistor is electrically connected with a first port of the main processor.
Preferably, the magnetic induction module further comprises a second filter circuit and a third filter circuit, the positive terminal of the magnetic induction chip is electrically connected with one end of the second filter circuit, the other end of the second filter circuit is electrically connected with one end of the third filter circuit, and the other end of the third filter circuit is electrically connected with the first port of the main processor.
Preferably, the second filter circuit includes a third capacitor and a fourth capacitor, the positive terminal of the third capacitor is electrically connected to the positive terminal of the fourth capacitor, the positive terminal of the fourth capacitor is electrically connected to the positive terminal of the magnetic induction chip, and the negative terminals of the third capacitor and the fourth capacitor are both grounded.
Preferably, the third filter circuit includes a fourth resistor and a second capacitor, one end of the fourth resistor is electrically connected to the positive terminal of the third capacitor, the other end of the fourth resistor is electrically connected to one end of the second capacitor, and the other end of the second capacitor is electrically connected to the first port of the main processor.
Preferably, the circuit board is further provided with a power supply module, the input end of the power supply module is electrically connected with a mains supply, the output end of the power supply module is electrically connected with the input end of the magnetic induction module, and the output end of the magnetic induction module is electrically connected with a load.
Preferably, the power module is used for supplying power to the magnetic induction module, and a switch power management IC chip is arranged in the power module.
The utility model has the advantages that: compared with the prior art, the anti-interference circuit for the magnetic induction rocker potentiometer filters alternating current voltage and interference signals in direct current voltage after filtering through the first filter circuit, ensures that a magnetic induction chip can stably operate, and improves the performance of the magnetic induction rocker potentiometer; the control port, the output port and the interrupt port of the magnetic induction chip are kept at high levels during the idle period through the pull-up resistor assembly, so that the magnetic induction chip is prevented from being interfered by the outside during the idle period to cause false start, and the anti-jamming capability of the magnetic induction chip is improved.
Description of the drawings:
fig. 1 is a circuit diagram of an anti-jamming circuit for a magnetic induction rocker potentiometer according to the present invention.
Fig. 2 is a schematic diagram of an anti-jamming circuit for a magnetic induction rocker potentiometer according to the present invention.
Fig. 3 is a circuit diagram of an anti-jamming circuit for a magnetic induction rocker potentiometer according to the present invention.
The device comprises a first filter circuit 1, a pull-up resistor component 2, a second filter circuit 3 and a third filter circuit 4.
Detailed Description
In order to make the object, technical solution and technical effect of the present invention more clearly understood, the present invention will be further described with reference to the following embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The first embodiment is as follows:
referring to fig. 1 and 2, an anti-jamming circuit for a magnetic induction rocker potentiometer includes a power module and a magnetic induction module, which are disposed on a circuit board, wherein an input end of the power module is electrically connected to a mains supply, an output end of the power module is electrically connected to an input end of the magnetic induction module, and an output end of the magnetic induction module is electrically connected to a load. In this embodiment, the commercial power voltage is preferably 110-220V alternating current.
The power supply module is used for supplying power to the magnetic induction module; and a switching power supply management IC chip is arranged in the power supply module and outputs corresponding voltage to supply power to the magnetic induction module.
The magnetic induction module comprises a magnetic induction chip I1, a main processor JN1, a first filter circuit 1 and a pull-up resistor component 2, the positive electrode terminal VDD of the magnetic induction chip I1 is electrically connected with the output end of the power supply module, one end of the first filter circuit 1 is electrically connected with the negative electrode terminal VSS of the magnetic induction chip I1, one end of the first filter circuit 1 is electrically connected to a fifth port of the main processor JN1, the other end of the first filter circuit 1 is electrically connected with the positive electrode terminal VDD of the magnetic induction chip I1, the positive electrode terminal VDD of the magnetic induction chip I1 is electrically connected with the first port of the main processor JN1, the reset port RSTN of the magnetic induction chip I1 is electrically connected with the fourth port of the main processor JN1, one end of the pull-up resistor assembly 2 is electrically connected with the magnetic induction chip I1, and the other end of the pull-up resistor assembly 2 is electrically connected with the input end of the main processor JN 1. In this embodiment, the model of the magnetic induction chip I1 is preferably AK09970D, and the model of the main processor JN1 is preferably 12C Master.
The first filter circuit 1 is used for filtering out alternating-current voltage in direct-current voltage and inhibiting interference signals; the first filter circuit 1 comprises at least one first capacitor C1, one end of the first capacitor C1 is electrically connected with the negative electrode terminal VSS of the magnetic induction chip I1, and the other end of the first capacitor C1 is electrically connected with the positive electrode terminal VDD of the magnetic induction chip I1. In this embodiment, the type of the first capacitor C1 is preferably 103 capacitors.
The pull-up resistor assembly 2 includes a first pull-up resistor R1, a second pull-up resistor R2 and a third pull-up resistor R3, the control port SCL of the magnetic induction chip I1 is electrically connected with one end of the third pull-up resistor R3, one end of the third pull-up resistor R3 is electrically connected to the third port of the main processor JN1, the other end of the third pull-up resistor R3 is electrically connected to the first port of the main processor JN1, the output port SDA of the magnetic induction chip I1 is electrically connected with one end of the second pull-up resistor R2, one end of the second pull-up resistor R2 is electrically connected to the second port of the main processor JN1, the other end of the second pull-up resistor R2 is electrically connected to the first port of the main processor JN1, the interrupt port OD-INT of the magnetic induction chip I1 is electrically connected with one end of the first pull-up resistor R1, the other end of the first pull-up resistor R1 is electrically connected to a first port of the main processor JN 1. In this embodiment, the resistance of the first pull-up resistor R1 is preferably 20K ohms, and the resistance of each of the second pull-up resistor R2 and the third pull-up resistor R3 is preferably 3.3K ohms.
The utility model discloses an anti jamming circuit for magnetic induction rocker potentiometer, first through power module with the commercial power convert with magnetic induction module assorted voltage give magnetic induction module power supply, the direct current voltage of power module input filters alternating voltage and interference signal in the direct current voltage after through first filter circuit 1 filters, ensures that magnetic induction chip I1 can the steady operation, has improved the performance of magnetic induction rocker potentiometer; then, the control port SCL, the output port SDA and the interrupt port OD-INT of the magnetic induction chip I1 are kept at high level during the idle period through the first pull-up resistor R1, the second pull-up resistor R2 and the third pull-up resistor R3, so as to ensure that the magnetic induction chip I1 is not interfered by the outside world during the idle period and is prevented from being started by mistake.
Example two:
referring to fig. 2 and 3, the anti-jamming circuit for the magnetic induction rocker potentiometer comprises a power module and a magnetic induction module, wherein the power module and the magnetic induction module are arranged on a circuit board, the input end of the power module is electrically connected with a mains supply, the output end of the power module is electrically connected with the input end of the magnetic induction module, and the output end of the magnetic induction module is electrically connected with a load. In this embodiment, the commercial power voltage is preferably 110-220V alternating current.
The power supply module is used for supplying power to the magnetic induction module; and a switching power supply management IC chip is arranged in the power supply module and outputs corresponding voltage to supply power to the magnetic induction module.
The magnetic induction module comprises a magnetic induction chip I1, a main processor JN1, a first filter circuit 1, a pull-up resistor assembly 2, a second filter circuit 3 and a third filter circuit 4, wherein the positive electrode end VDD of the magnetic induction chip I1 is electrically connected with one end of the second filter circuit 3, the other end of the second filter circuit 3 is electrically connected with one end of the third filter circuit 4, the other end of the third filter circuit 4 is electrically connected with the first port of the main processor JN1, the negative electrode end VSS of the magnetic induction chip I1 is electrically connected with one end of the first filter circuit 1, one end of the first filter circuit 1 is electrically connected with the fifth port of the main processor JN1, the other end of the first filter circuit 1 is electrically connected with the other end of the third filter circuit 4, the positive electrode end VDD of the magnetic induction chip I1 is electrically connected with the first port of the main processor JN1, the reset port RSTN of the magnetic induction chip I1 is electrically connected to the fourth port of the main processor JN1, one end of the pull-up resistor assembly 2 is electrically connected to the magnetic induction chip I1, and the other end of the pull-up resistor assembly is electrically connected to the input end of the main processor JN 1. In this embodiment, the model of the magnetic induction chip I1 is preferably AK09970D, and the model of the main processor JN1 is preferably 12 CMaster.
The first filter circuit 1 is used for filtering out alternating-current voltage in direct-current voltage and inhibiting interference signals; the first filter circuit 1 comprises at least one first capacitor C1, one end of the first capacitor C1 is electrically connected with the negative electrode terminal VSS of the magnetic induction chip I1, and the other end of the first capacitor C1 is electrically connected with the other end of the third filter circuit 4. In this embodiment, the type of the first capacitor C1 is preferably 103 capacitors.
The pull-up resistor assembly 2 includes a first pull-up resistor R1, a second pull-up resistor R2 and a third pull-up resistor R3, the control port SCL of the magnetic induction chip I1 is electrically connected with one end of the third pull-up resistor R3, one end of the third pull-up resistor R3 is electrically connected to the third port of the main processor JN1, the other end of the third pull-up resistor R3 is electrically connected to the first port of the main processor JN1, the output port SDA of the magnetic induction chip I1 is electrically connected with one end of the second pull-up resistor R2, one end of the second pull-up resistor R2 is electrically connected to the second port of the main processor JN1, the other end of the second pull-up resistor R2 is electrically connected to the first port of the main processor JN1, the interrupt port OD-INT of the magnetic induction chip I1 is electrically connected with one end of the first pull-up resistor R1, the other end of the first pull-up resistor R1 is electrically connected to a first port of the main processor JN 1. In this embodiment, the resistance of the first pull-up resistor R1 is preferably 20K ohms, and the resistance of each of the second pull-up resistor R2 and the third pull-up resistor R3 is preferably 3.3K ohms.
The second filter circuit 3 is used for filtering out alternating-current voltage in the direct-current voltage and inhibiting interference signals; the second filter circuit 3 comprises a third capacitor C3 and a fourth capacitor C4, wherein the positive terminal of the third capacitor C3 is electrically connected with the positive terminal of the fourth capacitor C4, the positive terminal of the fourth capacitor C4 is electrically connected with the positive terminal VDD of the magnetic induction chip I1, and the negative terminals of the third capacitor C3 and the fourth capacitor C4 are both grounded. In this embodiment, the models of the third capacitor C3 and the fourth capacitor C4 are both preferably 33 UF/40V.
The third filter circuit 4 is used for filtering out alternating-current voltage in the direct-current voltage and inhibiting interference signals; the third filter circuit 4 includes a fourth resistor R4 and a second capacitor C2, one end of the fourth resistor R4 is electrically connected to the positive terminal of the third capacitor C3, the other end of the fourth resistor R4 is electrically connected to one end of the second capacitor C2, and the other end of the second capacitor C2 is electrically connected to the first port of the main processor JN 1. In this embodiment, the resistance of the fourth resistor R4 is preferably 22 ohms, and the model of the second capacitor C2 is preferably 102P/50V.
The utility model discloses an anti jamming circuit for magnetic induction rocker potentiometer, give the magnetic induction module power supply after converting the commercial power into with magnetic induction module assorted voltage through power module earlier, the alternating voltage and the interference signal in the direct voltage of power module input are filtered many times through first filter circuit 1, second filter circuit 3 and third filter circuit 4, ensure that magnetic induction chip I1 can the steady operation, improved the performance of magnetic induction rocker potentiometer; then, the control port SCL, the output port SDA and the interrupt port OD-INT of the magnetic induction chip I1 are kept at high level during the idle period through the first pull-up resistor R1, the second pull-up resistor R2 and the third pull-up resistor R3, so as to ensure that the magnetic induction chip I1 is not interfered by the outside world during the idle period and is prevented from being started by mistake.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of the ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, its framework form can be nimble changeable, can derive series of products. But merely as a matter of simple deductions or substitutions, should be considered as belonging to the scope of patent protection of the present invention as determined by the claims submitted.
Claims (8)
1. An anti-interference circuit for a magnetic induction rocker potentiometer is characterized by comprising a magnetic induction module arranged on a circuit board, the magnetic induction module comprises a magnetic induction chip, a main processor, a first filter circuit and a pull-up resistor component, one end of the first filter circuit is electrically connected with the negative electrode end of the magnetic induction chip, one end of the first filter circuit is electrically connected with the fifth port of the main processor, the other end of the first filter circuit is electrically connected with the positive electrode end of the magnetic induction chip, the positive electrode end of the magnetic induction chip is electrically connected with the first port of the main processor, the reset port of the magnetic induction chip is electrically connected with the fourth port of the main processor, one end of the pull-up resistor assembly is electrically connected with the magnetic induction chip, and the other end of the pull-up resistor assembly is electrically connected with the main processor.
2. The immunity circuit of claim 1, wherein said first filter circuit comprises at least a first capacitor, one end of said first capacitor being electrically connected to said negative terminal of said magnetic induction chip, and the other end of said first capacitor being electrically connected to said positive terminal of said magnetic induction chip.
3. The anti-jamming circuit for a magnetic induction rocker potentiometer according to claim 2, wherein the pull-up resistor assembly comprises a first pull-up resistor, a second pull-up resistor and a third pull-up resistor, the control port of the magnetic induction chip is electrically connected to one end of the third pull-up resistor, one end of the third pull-up resistor is electrically connected to the third port of the main processor, the other end of the third pull-up resistor is electrically connected to the first port of the main processor, the output port of the magnetic induction chip is electrically connected to one end of the second pull-up resistor, one end of the second pull-up resistor is electrically connected to the second port of the main processor, the other end of the second pull-up resistor is electrically connected to the first port of the main processor, and the interrupt port of the magnetic induction chip is electrically connected to one end of the first pull-up resistor, the other end of the first pull-up resistor is electrically connected with the first port of the main processor.
4. The anti-jamming circuit for a magnetic induction rocker potentiometer according to claim 3, wherein the magnetic induction module further comprises a second filter circuit and a third filter circuit, the positive terminal of the magnetic induction chip is electrically connected to one terminal of the second filter circuit, the other terminal of the second filter circuit is electrically connected to one terminal of the third filter circuit, and the other terminal of the third filter circuit is electrically connected to the first port of the main processor.
5. The immunity circuit of claim 4, wherein said second filter circuit comprises a third capacitor and a fourth capacitor, wherein a positive terminal of said third capacitor is electrically connected to a positive terminal of said fourth capacitor, a positive terminal of said fourth capacitor is electrically connected to a positive terminal of said magnetic induction chip, and a negative terminal of said third capacitor and a negative terminal of said fourth capacitor are both grounded.
6. The immunity circuit for a magnetic induction rocker potentiometer according to claim 5, wherein the third filtering circuit comprises a fourth resistor and a second capacitor, one end of the fourth resistor is electrically connected to the positive terminal of the third capacitor, the other end of the fourth resistor is electrically connected to one end of the second capacitor, and the other end of the second capacitor is electrically connected to the first port of the main processor.
7. An anti-jamming circuit for a magnetic induction rocker potentiometer according to any of claims 1 to 6, wherein a power module is further disposed on the circuit board, an input of the power module is electrically connected to a mains supply, an output of the power module is electrically connected to an input of the magnetic induction module, and an output of the magnetic induction module is electrically connected to a load.
8. The jamming protection circuit for a magnetic induction rocker potentiometer according to claim 7, wherein the power supply module is configured to supply power to the magnetic induction module, and a switching power management IC chip is disposed within the power supply module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020424478.8U CN211791258U (en) | 2020-03-27 | 2020-03-27 | Anti-interference circuit for magnetic induction rocker potentiometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020424478.8U CN211791258U (en) | 2020-03-27 | 2020-03-27 | Anti-interference circuit for magnetic induction rocker potentiometer |
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| Publication Number | Publication Date |
|---|---|
| CN211791258U true CN211791258U (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020424478.8U Active CN211791258U (en) | 2020-03-27 | 2020-03-27 | Anti-interference circuit for magnetic induction rocker potentiometer |
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| Country | Link |
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| CN (1) | CN211791258U (en) |
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Effective date of registration: 20210508 Address after: 516100 liboshui section of Yongshi Avenue, Shiwan Town, BOLUO County, Huizhou City, Guangdong Province Patentee after: Guangdong Gaole Technology Co.,Ltd. Address before: Group 11, Daping village, jinpenwei Township, Xintian County, Yongzhou City, Hunan Province Patentee before: Luo Xiaoli |