CN217183176U - Filter protection circuit for measuring current signal of stepping motor - Google Patents
Filter protection circuit for measuring current signal of stepping motor Download PDFInfo
- Publication number
- CN217183176U CN217183176U CN202123328395.2U CN202123328395U CN217183176U CN 217183176 U CN217183176 U CN 217183176U CN 202123328395 U CN202123328395 U CN 202123328395U CN 217183176 U CN217183176 U CN 217183176U
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- protection circuit
- step motor
- filter
- stepping motor
- filtering
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- 238000001914 filtration Methods 0.000 claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims description 12
- 230000035945 sensitivity Effects 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims 1
- 238000012986 modification Methods 0.000 claims 1
- 238000009529 body temperature measurement Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000000844 transformation Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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- Control Of Stepping Motors (AREA)
- Protection Of Generators And Motors (AREA)
Abstract
The utility model discloses a filtering protection circuit for measuring step motor current signal, including step motor, step motor connects gradually DC power supply, hall current sensor device, rectifier bridge, ripple filter capacitance, 3 end EMI wave filter and RC low pass filter condenser. The filtering protection circuit of this mechanism can effectively accomplish the filtering clutter function, can effectively prevent simultaneously because of the phenomenon of high temperature burnout motor, accomplishes the temperature measurement protection. The utility model discloses a simple and convenient filter circuit can realize the noise of effective filtering step motor during operation, lays the basis for follow-up accurate measurement real-time current value, has effectively guaranteed that the accuracy judges step motor operating condition, temperature state, provides reliable foundation for follow-up real time control.
Description
Technical Field
The utility model relates to a circuit design field, concretely relates to measure step motor current signal's filter circuit with high temperature protect function.
Background
Measuring the stepper motor operating current may measure the stepper motor driver current. When the stepping motor works, the electric pulse signal is converted into angular displacement or linear displacement. By controlling the sequence, frequency and number of electrical pulses applied to the coils of the motor, control of the direction of rotation, speed and angle of rotation of the stepper motor can be achieved. From the working principle, the current fluctuation of the stepping motor is very large, so that clutter noise is very large, and the real-time current cannot be accurately measured if filtering is not performed. Therefore, a simple filtering mode is designed, the function of filtering out noise waves is achieved, and meanwhile temperature measurement protection is provided for preventing the motor from being burnt at high temperature.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem be in the current work, problem that step motor clutter noise is big provides a filter protection circuit, and the noise of this circuit effective filtering step motor during operation is for follow-up accurate measurement real-time current value, lays the basis. And the working state and the temperature state of the stepping motor can be accurately judged, reliable basis is provided for subsequent real-time control, and the circuit has wide application prospect in the aspect of real-time automatic control.
The utility model adopts the technical proposal that: a filtering protection circuit for measuring current signals of a stepping motor comprises the stepping motor, wherein the stepping motor is sequentially connected with a direct-current power supply, a Hall current sensor device, a rectifier bridge, a ripple filter capacitor, a 3-end EMI filter and an RC low-pass filter capacitor; one end of the rectifier bridge, one end of the 3-section EMI filter and one end of the RC low-pass filter capacitor are grounded; the Hall current sensor device comprises a Hall current sensor and at least three amplifiers.
As a further improvement of the present invention, the stepping motor is equipped with an infrared sensor.
As the utility model discloses a further improvement, hall current sensor connects gradually at least three amplifier, and the amplifier that is closest hall current sensor connects temperature compensation unit and sensitivity and repaiies the unit, and the amplifier that keeps away from hall current sensor the farthest connects adjustment unit at zero point.
The utility model discloses beneficial effect who has: the filtering protection circuit of this mechanism can effectively accomplish the filtering clutter function, can effectively prevent simultaneously because of the phenomenon of high temperature burnout motor, accomplishes the temperature measurement protection. The utility model discloses a simple and convenient filter circuit can realize the noise of effective filtering step motor during operation, lays the basis for follow-up accurate measurement real-time current value, has effectively guaranteed that the accuracy judges step motor operating condition, temperature state, provides reliable foundation for follow-up real time control.
Drawings
Fig. 1 is a schematic view of the present invention.
Fig. 2 is a schematic diagram of a hall sensor device according to an embodiment of the present disclosure.
Shown in the figure: the device comprises a stepping motor 1, a direct-current power supply 2, a Hall current sensor device 3, a rectifier bridge 4, a ripple filter capacitor 5, an EMI filter at a 63 end and a low-pass filter capacitor 7 RC.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in the figure, the filtering protection circuit for measuring the current signal of the stepping motor comprises the stepping motor 1, a direct-current power supply 2, a Hall current sensor device 3, a rectifier bridge 4, a ripple filter capacitor 5, a three-terminal EMI filter 6 and a low-pass RC filter capacitor 7 which are sequentially connected. The current supplied to the stepping motor 1 is connected into the Hall current sensor device 3, the Hall sensor device 3 can sense the current signal of the stepping motor, then the signal is rectified into a direct current signal by a rectifier bridge, the direct current signal of the current is connected into the ripple wave filter capacitor 5 to filter low-frequency ripples, the output signal of the ripple wave filter capacitor 5 is connected into the three-end EMI filter 6 to filter various noises, finally the output signal of the three-end EMI filter 6 is connected into the RC low-pass filter to filter the final noise, and finally the signal can be connected into the ADC.
Further, an infrared temperature measuring sensor 9 is used for irradiating the motor, measuring signals are transmitted into the single chip microcomputer for processing, and protection is carried out if abnormality exists.
Furthermore, the Hall sensor device comprises a Hall sensor and at least three amplifiers, the Hall sensor and the amplifiers are sequentially connected in series, and the amplifier closest to the Hall sensor has a pre-amplification function and can perform the functions of temperature compensation and sensitivity adjustment; the amplifier farthest away from the Hall sensor is connected with a zero point adjusting unit; the amplifier in the middle has the effect of dynamic offset cancellation.
The filtering protection circuit of this mechanism can effectively accomplish the filtering clutter function, can effectively prevent simultaneously because of the phenomenon of high temperature burnout motor, accomplishes the temperature measurement protection. The utility model discloses a simple and convenient filter circuit can realize the noise of effective filtering step motor during operation, lays the basis for follow-up accurate measurement real-time current value, has effectively guaranteed that the accuracy judges step motor operating condition, temperature state, provides reliable foundation for follow-up real time control.
It should be known to those skilled in the art that the protection scheme of the present invention is not limited to the above-mentioned embodiments, and various permutations, combinations and transformations can be performed on the basis of the above-mentioned embodiments, without violating the spirit of the present invention, all the transformations performed by the present invention fall within the protection scope of the present invention.
Claims (3)
1. A filtering protection circuit for measuring a current signal of a stepping motor comprises the stepping motor (1) and is characterized in that the stepping motor (1) is sequentially connected with a direct-current power supply (2), a Hall current sensor device (3), a rectifier bridge (4), a ripple filter capacitor (5), a 3-end EMI filter (6) and an RC low-pass filter capacitor (7); one end of the rectifier bridge, one end of the 3-section EMI filter and one end of the RC low-pass filter capacitor are grounded; the Hall current sensor device (3) comprises a Hall current sensor and at least three amplifiers.
2. A filter protection circuit for measuring a stepper motor current signal as claimed in claim 1, characterized in that the stepper motor (1) is provided with an infrared sensor.
3. The filter protection circuit for measuring the current signal of the stepping motor according to claim 1 or 2, wherein the hall current sensor is sequentially connected with at least three amplifiers, the amplifier closest to the hall current sensor is connected with the temperature compensation unit and the sensitivity modification unit, and the amplifier farthest from the hall current sensor is connected with the zero point adjustment unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123328395.2U CN217183176U (en) | 2021-12-28 | 2021-12-28 | Filter protection circuit for measuring current signal of stepping motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123328395.2U CN217183176U (en) | 2021-12-28 | 2021-12-28 | Filter protection circuit for measuring current signal of stepping motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217183176U true CN217183176U (en) | 2022-08-12 |
Family
ID=82731583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123328395.2U Active CN217183176U (en) | 2021-12-28 | 2021-12-28 | Filter protection circuit for measuring current signal of stepping motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217183176U (en) |
-
2021
- 2021-12-28 CN CN202123328395.2U patent/CN217183176U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Electronic industrial zone Anhui city Tongling province Shicheng road 244000 Patentee after: Anhui Blue Shield Defense Technology Co.,Ltd. Address before: Electronic industrial zone Anhui city Tongling province Shicheng road 244000 Patentee before: ANHUI GUANGDA ELECTRONIC TECHNOLOGY Co.,Ltd. |