CN213238760U - Ripple wave processing circuit of automobile seat motor - Google Patents
Ripple wave processing circuit of automobile seat motor Download PDFInfo
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- CN213238760U CN213238760U CN202022374162.5U CN202022374162U CN213238760U CN 213238760 U CN213238760 U CN 213238760U CN 202022374162 U CN202022374162 U CN 202022374162U CN 213238760 U CN213238760 U CN 213238760U
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Abstract
The utility model provides a car seat motor ripple processing circuit, including first signal input terminal, second signal input terminal, signal output terminal, first electric capacity, first resistance, second resistance, third resistance, current detection amplifier, dual voltage comparator and voltage comparator; the detection signal is input into the current detection amplifier through the first signal input terminal and the second signal input terminal, then the high and low levels are output to a subsequent processor through the signal output terminal after being processed through the double voltage comparator and the voltage comparator, the motor position is identified and memorized through the change of the high and low levels, and the motor position can be better identified.
Description
Technical Field
The utility model relates to a car seat control technical field particularly, relates to a car seat motor ripple processing circuit.
Background
At present, a brushed direct current motor is often used in an automobile to drive movable parts (such as seats, windows and the like). Control of such movable parts requires knowledge of the number of rotations, direction of rotation, etc. of the drive motor. The existing motor ripple processing circuit can realize the identification of the motor rotation information, but the detection effect is not ideal. It is desirable to provide a solution to better enable identification of the motor position.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a car seat motor ripple processing circuit for realize better the technological effect to the discernment of motor position.
The utility model provides a car seat motor ripple processing circuit, including first signal input terminal, second signal input terminal, signal output terminal, first electric capacity, first resistance, second resistance, third resistance, current detection amplifier, double voltage comparator and voltage comparator; the first signal input terminal is connected with the positive input end of the current detection amplifier; the second signal input terminal is connected with the negative input end of the current detection amplifier; the first end of the first capacitor is connected with the output end of the current detection amplifier; a first inverting input end of the dual-voltage comparator and a first end of the first resistor are both connected with a second end of the first capacitor; the second non-inverting input end, the second inverting input end and the second end of the first resistor of the double-voltage comparator are connected with the first output end of the double-voltage comparator; the first end of the second resistor and the inverted input end of the voltage comparator are both connected with the second output end of the double-voltage comparator; a second end of the second resistor is connected with a second inverting input end of the dual-voltage comparator; the power supply end and the first reference voltage end of the current detection amplifier are both connected with a first power supply; the grounding end of the current detection amplifier and the second reference voltage end are grounded; the positive pole, the first non-inverting input end and the second non-inverting input end of the double-voltage comparator are connected with the first power supply; the positive pole and the non-inverting input end of the voltage comparator are both connected with the first power supply; the first end of the third resistor, the signal output terminal and the output end of the voltage comparator are connected with a second power supply; and the second end of the third resistor is connected with the non-inverting input end of the voltage comparator.
Further, the ripple processing circuit of the automobile seat motor further comprises a first grounding resistor and a second grounding resistor; the first grounding resistor is connected with a first in-phase input end of the double-voltage comparator; and the second grounding resistor is connected with the non-inverting input end of the voltage comparator.
Further, the automobile seat motor ripple processing circuit further comprises a second capacitor; the first end of the second capacitor is connected with the positive input end of the current detection amplifier; and the second end of the second capacitor is connected with the negative input end of the current detection amplifier.
Further, the automobile seat motor ripple processing circuit further comprises a third capacitor; the first end of the third capacitor is connected with the first output end of the double-voltage comparator; and the second end of the third capacitor is connected with the first inverting input end of the dual-voltage comparator.
Further, the automobile seat motor ripple processing circuit further comprises a grounding capacitor; and the grounding capacitor is connected with the second non-inverting input end of the double-voltage comparator.
Further, the automobile seat motor ripple processing circuit further comprises a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor and an eighth resistor; a first end of the fourth resistor is connected to the first signal input terminal; a second end of the fourth resistor is connected with the positive input end of the current detection amplifier; a first end of the fifth resistor is connected to the second signal input terminal; the second end of the fifth resistor is connected with the negative input end of the current detection amplifier; a first end of the sixth resistor is connected with the first power supply; the second end of the sixth resistor is connected with the first non-inverting input end of the dual-voltage comparator; a first end of the seventh resistor is connected with the first power supply; the second end of the seventh resistor is connected with the non-inverting input end of the voltage comparator; a first end of the eighth resistor is connected with the second power supply; and the second end of the eighth resistor is connected with the output end of the voltage comparator.
Further, the automobile seat motor ripple processing circuit further comprises a ninth resistor, a tenth resistor, an eleventh resistor and a twelfth resistor; a first end of the ninth resistor is connected with a second end of the first capacitor; a second end of the ninth resistor is connected with a first inverting input end of the dual-voltage comparator; a first end of the tenth resistor and a first end of the eleventh resistor are both connected with a first output end of the dual-voltage comparator; a second end of the tenth resistor is connected with a second inverting input end of the dual-voltage comparator; a second end of the eleventh resistor is connected with a second non-inverting input end of the dual-voltage comparator; a first end of the twelfth resistor is connected with a first non-inverting input end of the dual-voltage comparator; a second end of the twelfth resistor is connected with a second non-inverting input terminal of the dual-voltage comparator.
The utility model discloses the beneficial effect that can realize is: the utility model provides a car seat motor ripple processing circuit passes through current detection amplifier, dual voltage comparator and converts the electric current peak value of gathering into the height level, then exports for follow-up treater through the signal output terminal, records the change of height level to realize motor position discernment and memory, can realize the discernment to the motor position better.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to these drawings without inventive efforts.
Fig. 1 is a schematic diagram of a ripple processing circuit of a motor of a car seat provided by an embodiment of the present invention.
Detailed Description
The technical solution in the embodiment of the present invention will be described below with reference to the accompanying drawings in the embodiment of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, fig. 1 is a schematic diagram of a ripple processing circuit of a motor of an automobile seat according to an embodiment of the present invention.
In one implementation, the embodiment of the present invention provides a ripple processing circuit for a seat motor of an automobile, including a first signal input terminal Vin +, a second signal input terminal Vin-, a signal output terminal RFout, a first capacitor C1, a first resistor R1, a second resistor R2, a third resistor R3, a current detection amplifier U1, a dual voltage comparator U2 (including U2A and U2B), and a voltage comparator U3; the first signal input terminal Vin + is connected with the positive input end of the current detection amplifier U1; the second signal input terminal Vin-is connected with the negative input end of the current detection amplifier U1; a first end of the first capacitor C1 is connected with the output end of the current detection amplifier U1; a first inverting input end of the dual-voltage comparator and a first end of a first resistor R1 are both connected with a second end of a first capacitor C1; a second non-inverting input end and a second inverting input end of the dual-voltage comparator U2 and a second end of the first resistor R1 are connected with a first output end of the dual-voltage comparator U2; a first end of the second resistor R2 and an inverting input end of the voltage comparator U2 are both connected with a second output end of the dual-voltage comparator U2; a second end of the second resistor R2 is connected with a second inverting input end of the dual-voltage comparator U2; the power supply end of the current detection amplifier U1 and the first reference voltage end are both connected with a first power supply; the ground terminal of the current detection amplifier U1 and the second reference voltage terminal are grounded; the positive electrode, the first non-inverting input end and the second non-inverting input end of the dual-voltage comparator U2 are connected with a first power supply (5V input power supply); the positive pole and the non-inverting input end of the voltage comparator U3 are both connected with a first power supply (5V input power supply); the first end of the third resistor R3, the signal output terminal and the output end of the voltage comparator are all connected with a second power supply (3.3V input power supply); the second end of the third resistor R3 is connected to the non-inverting input of the voltage comparator U3.
In one embodiment, the ripple processing circuit of the vehicle seat motor further includes a first ground resistor RG1 and a second ground resistor RG 2; the first grounding resistor RG1 is connected with a first non-inverting input end of the dual-voltage comparator U2; the second ground resistor RG2 is connected to the non-inverting input of the voltage comparator U2. The influence of the zero drift can be suppressed by the first ground resistor RG1 and the second ground resistor RG 2.
In one embodiment, the ripple processing circuit of the vehicle seat motor further includes a second capacitor C2; a first end of the second capacitor C2 is connected with the positive input end of the current detection amplifier U1; the second terminal of the second capacitor C2 is connected to the negative input terminal of the current sense amplifier U1. The second capacitor C2 can filter out interfering signals.
In an embodiment, the ripple processing circuit of the vehicle seat motor further includes a third capacitor C3; a first end of the third capacitor C3 is connected with a first output end of the dual-voltage comparator U2; a second terminal of the third capacitor C3 is connected to a first inverting input terminal of the dual voltage comparator U2. The third capacitor C3 can increase the speed of level inversion and prevent abrupt voltage change.
In one embodiment, the ripple processing circuit of the vehicle seat motor further includes a ground capacitor C4; the grounding capacitor C4 is connected to the second non-inverting input of the dual voltage comparator U2. The input signal of the second non-inverting input terminal of the dual voltage comparator U2 can be filtered by the grounding capacitor C4.
In one embodiment, the ripple processing circuit of the vehicle seat motor further includes a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, and an eighth resistor R8; a first end of the fourth resistor R4 is connected to the first signal input terminal Vin +; a second end of the fourth resistor R4 is connected with the positive input end of the current detection amplifier U1; a first end of the fifth resistor R5 is connected to the second signal input terminal Vin-; a second end of the fifth resistor R5 is connected with a negative input end of the current detection amplifier U1; a first end of the sixth resistor R6 is connected to the first power supply; a second end of the sixth resistor R6 is connected with a first non-inverting input end of the dual-voltage comparator U2; a first end of the seventh resistor R7 is connected with the first power supply; a second end of the seventh resistor R7 is connected with a non-inverting input end of the voltage comparator U3; a first end of the eighth resistor R8 is connected to the second power supply; a second terminal of the eighth resistor R8 is connected to the output terminal of the voltage comparator U3. The input line can be subjected to current-limiting protection through the resistors.
Further, the ripple processing circuit of the vehicle seat motor further includes a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, and a twelfth resistor R12; a first end of the ninth resistor R9 is connected with a second end of the first capacitor C1; a second end of the ninth resistor R9 is connected to a first inverting input terminal of the dual voltage comparator U2; a first end of the tenth resistor R10 and a first end of the eleventh resistor R11 are both connected to a first output terminal of the dual voltage comparator U2; a second terminal of the tenth resistor R10 is connected to a second inverting input terminal of the dual voltage comparator U2; a second end of the eleventh resistor R11 is connected with a second non-inverting input end of the dual-voltage comparator U2; a first end of the twelfth resistor R12 is connected with a first non-inverting input end of the dual-voltage comparator U2; a second terminal of the twelfth resistor R12 is connected to a second non-inverting input terminal of the dual voltage comparator U2. The dual voltage comparator U2 can be current-limited by the resistors.
To sum up, the embodiment of the present invention provides a ripple processing circuit for a motor of an automobile seat, which includes a first signal input terminal, a second signal input terminal, a signal output terminal, a first capacitor, a first resistor, a second resistor, a third resistor, a current detection amplifier, a dual voltage comparator and a voltage comparator; the detection signal is input into the current detection amplifier through the first signal input terminal and the second signal input terminal, then the high and low levels are output to a subsequent processor through the signal output terminal after being processed through the double voltage comparator and the voltage comparator, the motor position is identified and memorized through the change of the high and low levels, and the motor position can be better identified.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A ripple processing circuit of a motor of an automobile seat is characterized by comprising a first signal input terminal, a second signal input terminal, a signal output terminal, a first capacitor, a first resistor, a second resistor, a third resistor, a current detection amplifier, a double-voltage comparator and a voltage comparator; the first signal input terminal is connected with the positive input end of the current detection amplifier; the second signal input terminal is connected with the negative input end of the current detection amplifier; the first end of the first capacitor is connected with the output end of the current detection amplifier; a first inverting input end of the dual-voltage comparator and a first end of the first resistor are both connected with a second end of the first capacitor; the second non-inverting input end, the second inverting input end and the second end of the first resistor of the double-voltage comparator are connected with the first output end of the double-voltage comparator; the first end of the second resistor and the inverted input end of the voltage comparator are both connected with the second output end of the double-voltage comparator; a second end of the second resistor is connected with a second inverting input end of the dual-voltage comparator; the power supply end and the first reference voltage end of the current detection amplifier are both connected with a first power supply; the grounding end of the current detection amplifier and the second reference voltage end are grounded; the positive pole, the first non-inverting input end and the second non-inverting input end of the double-voltage comparator are connected with the first power supply; the positive pole and the non-inverting input end of the voltage comparator are both connected with the first power supply; the first end of the third resistor, the signal output terminal and the output end of the voltage comparator are connected with a second power supply; and the second end of the third resistor is connected with the non-inverting input end of the voltage comparator.
2. The car seat motor ripple processing circuit of claim 1, further comprising a first ground resistor and a second ground resistor; the first grounding resistor is connected with a first in-phase input end of the double-voltage comparator; and the second grounding resistor is connected with the non-inverting input end of the voltage comparator.
3. The automobile seat motor ripple processing circuit of claim 1, further comprising a second capacitor; the first end of the second capacitor is connected with the positive input end of the current detection amplifier; and the second end of the second capacitor is connected with the negative input end of the current detection amplifier.
4. The automobile seat motor ripple processing circuit of claim 1, further comprising a third capacitor; the first end of the third capacitor is connected with the first output end of the double-voltage comparator; and the second end of the third capacitor is connected with the first inverting input end of the dual-voltage comparator.
5. The car seat motor ripple processing circuit of claim 1, further comprising a ground capacitor; and the grounding capacitor is connected with the second non-inverting input end of the double-voltage comparator.
6. The automobile seat motor ripple processing circuit of claim 1, further comprising a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, and an eighth resistor; a first end of the fourth resistor is connected to the first signal input terminal; a second end of the fourth resistor is connected with the positive input end of the current detection amplifier; a first end of the fifth resistor is connected to the second signal input terminal; the second end of the fifth resistor is connected with the negative input end of the current detection amplifier; a first end of the sixth resistor is connected with the first power supply; the second end of the sixth resistor is connected with the first non-inverting input end of the dual-voltage comparator; a first end of the seventh resistor is connected with the first power supply; the second end of the seventh resistor is connected with the non-inverting input end of the voltage comparator; a first end of the eighth resistor is connected with the second power supply; and the second end of the eighth resistor is connected with the output end of the voltage comparator.
7. The automobile seat motor ripple processing circuit of claim 1, further comprising a ninth resistor, a tenth resistor, an eleventh resistor, and a twelfth resistor; a first end of the ninth resistor is connected with a second end of the first capacitor; a second end of the ninth resistor is connected with a first inverting input end of the dual-voltage comparator; a first end of the tenth resistor and a first end of the eleventh resistor are both connected with a first output end of the dual-voltage comparator; a second end of the tenth resistor is connected with a second inverting input end of the dual-voltage comparator; a second end of the eleventh resistor is connected with a second non-inverting input end of the dual-voltage comparator; a first end of the twelfth resistor is connected with a first non-inverting input end of the dual-voltage comparator; a second end of the twelfth resistor is connected with a second non-inverting input terminal of the dual-voltage comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022374162.5U CN213238760U (en) | 2020-10-22 | 2020-10-22 | Ripple wave processing circuit of automobile seat motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022374162.5U CN213238760U (en) | 2020-10-22 | 2020-10-22 | Ripple wave processing circuit of automobile seat motor |
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| Publication Number | Publication Date |
|---|---|
| CN213238760U true CN213238760U (en) | 2021-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022374162.5U Active CN213238760U (en) | 2020-10-22 | 2020-10-22 | Ripple wave processing circuit of automobile seat motor |
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| Country | Link |
|---|---|
| CN (1) | CN213238760U (en) |
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2020
- 2020-10-22 CN CN202022374162.5U patent/CN213238760U/en active Active
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