CN102710192A - Method for detecting revolution number of direct-current motor - Google Patents
Method for detecting revolution number of direct-current motor Download PDFInfo
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- CN102710192A CN102710192A CN2012102061903A CN201210206190A CN102710192A CN 102710192 A CN102710192 A CN 102710192A CN 2012102061903 A CN2012102061903 A CN 2012102061903A CN 201210206190 A CN201210206190 A CN 201210206190A CN 102710192 A CN102710192 A CN 102710192A
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- motor
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- direct current
- transducer
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Abstract
The invention provides a method for detecting the revolution number of a direct-current motor. In the method, a motor, a sensor and a controller are provided, a magnetic filed inside the motor is led out to an iron core and the like inside the sensor, then, the magnetic field is converted into pulse signals after being subjected to amplification filtering treatment, and the controller is used for calculating and displaying the revolution number. According to the method for detecting the revolution number of the direct-current motor, magnetic lines produced in winding coils of the motor are used to determine the revolution number of the motor, to be specific, the magnetic filed inside the motor is led out to the iron core and the like inside the sensor, then, the magnetic field is converted into pulse signals after being subjected to amplification filtering treatment, and the controller is used for calculating and displaying the revolution number. Compared with a strobe manner and a light reflection manner in the prior art, the method disclosed by the invention is simple and convenient to operate.
Description
Technical field
The invention belongs to the motor detection range, be specifically related to a kind of method that detects the direct current machine revolution.
Background technology
General carbon brush and brushless motor comprise permanent magnetism stone and inboard stator electromagnet Spin Control portion, and transducer is positioned near the electromagnet, detects the variation in magnetic field.
In the prior art, all adopt strobe mode or reflective mode to detect troublesome poeration; And recently motor is high revolution, and heterogeneous magnetic pole is so that the user must set number of magnetic poles is unpainful.
Summary of the invention
The present invention is intended to invent a kind of method of detection direct current machine revolution of practicality.
For realizing the foregoing invention purpose, the technical scheme that the present invention adopted is:
A kind of method that detects the direct current machine revolution of the present invention; Comprise motor, transducer and controller, wherein, derive iron core of sensor internal or the like to the magnetic field that motor is inner; The amplification filtering treatment conversion becomes pulse signal then, calculates and shows revolution through controller.
Preferably, the iron core fore-end is the S utmost point during electromagnet N utmost point of said motor inside, and the other end of reverse side is the N utmost point.
Preferably, through said iron core or the like, on roll up the coil of wire of magnetic field measuring, produce electric current, the variation of magnetic pole and the resistance of the coil of wire produce voltage.Further, described voltage comes supercharging filtering benchmark voltage to become control pulse signal, the calculation display of coming time per unit again through Small-sized C PU through the electronic loop of supercharging substrate.
Preferably, in the said motor, permanent magnetism stone rotating part is located at the outside, stator electromagnet Spin Control portion is located at the inboard, and the transducer that is used to detect changes of magnetic field is placed on the right angle orientation of fore-end.
Preferably, in the said motor, permanent magnetism stone is located at the outside, and the stator electromagnet rotating part is located at the inboard, and the transducer that is used to detect changes of magnetic field is placed on electromagnet fore-end vertical direction.
With respect to prior art, the method for detection direct current machine revolution of the present invention has following beneficial technical effects:
The method of detection direct current machine revolution of the present invention, than strobe mode of the prior art and reflective mode, easy and simple to handle; Not not bothering of necessary setting number of magnetic poles.
Description of drawings
Fig. 1 is the detection architecture sketch map of method of the detection dc brushless motor revolution of one embodiment of the invention.
Fig. 2 is the detection architecture sketch map of method of detection direct current carbon brush motor revolution of the another kind of embodiment of embodiment of the present invention.
Fig. 3 is based on the transducer of Fig. 1 or Fig. 2 structure and the structural representation of controller.
Fig. 4 is the sketch map based on each waveform of the implementation method generation of Fig. 1 or Fig. 2.
Fig. 5 is based on the only principle loop diagram of the action of implementation method of the present invention.
Fig. 6 is the detection effect sketch map of method of detection direct current carbon brush motor revolution of an embodiment of embodiment of the present invention.
Label declaration among the figure: 1, motor, 2, transducer 3, controller.
Embodiment
Describe the detection architecture sketch map of the method for this detection of enforcement direct current machine revolution provided by the present invention in detail below in conjunction with accompanying drawing, but be not construed as limiting the invention.
Extremely shown in Figure 5 in conjunction with Fig. 1; A kind of method that detects the direct current machine revolution; Comprise motor 1, transducer 2 and controller 3, wherein, derive measurement of magnetic field iron core of transducer 2 inside or the like to motor 1 inner magnetic field; The amplification filtering treatment conversion becomes pulse signal then, calculates and shows revolution through controller 3.
Preferably, iron core of transducer or the like fore-end magnetic pole is the S utmost point in the time of the electromagnet N utmost point of said motor 1 inside, and the other end of reverse side is the N utmost point.According to the next reaction of straining of the change in polarity of motor electromagnet with iron core or the like, just can rotate, intimate magnetic pole also changes to the SNS utmost point.
Preferably, through said iron core or the like, on roll up the coil of wire of magnetic field measuring, produce electric current, the variation of magnetic pole and the resistance of the coil of wire produce voltage.Further, described voltage comes supercharging filtering benchmark voltage to become control pulse signal, the calculation display of coming time per unit again through Small-sized C PU through the electronic loop of supercharging substrate.
In conjunction with shown in Figure 1, as a kind of preferred embodiment, in the said motor 1, permanent magnetism stone rotating part is located at the outside, stator electromagnet Spin Control portion is located at the inboard, is used to detect the right angle orientation that the transducer 2 of changes of magnetic field is placed the fore-end of electromagnet.
In conjunction with shown in Figure 2, as another kind of preferred embodiment, in the said motor 1, permanent magnetism stone is located at the outside, and the stator electromagnet rotating part is located at the inboard, and the transducer 2 that is used to detect changes of magnetic field is placed on the vertical direction of the fore-end of electromagnet.
In conjunction with shown in Figure 6, be positioned over a plurality of transducers 2 on the electromagnet coil of wire of motor 1, can detect the rotation spot that the deviation in Yin Mada magnetic field is come, vibrations drive the bad etc. of loop.
The foregoing description just is to let the one of ordinary skilled in the art can understand content of the present invention and enforcement according to this in order technical conceive of the present invention and characteristics to be described, to be its objective is, can not limit protection scope of the present invention with this.The variation or the modification of every equivalence that the essence of content has been done according to the present invention all should be encompassed in protection scope of the present invention.
Claims (6)
1. method that detects the direct current machine revolution; Comprise motor (1), transducer (2) and controller (3); It is characterized in that; Derive inner measurement of magnetic field iron core of transducer (2) or the like to the inner magnetic field of motor (1), the amplification filtering treatment conversion becomes pulse signal then, calculates and shows revolution through controller (3).
2. the method for detection direct current machine revolution according to claim 1 is characterized in that, the magnetic pole of iron core of transducer or the like fore-end is the S utmost point in the time of the inner electromagnet N utmost point of said motor (1), and the other end of reverse side is the N utmost point.
3. the method for detection direct current machine revolution according to claim 1 is characterized in that, through said iron core or the like, on roll up the coil of wire of magnetic field measuring, produce electric current, the variation of magnetic pole and the resistance of the coil of wire produce voltage.
4. the method for detection direct current machine revolution according to claim 3 is characterized in that, described voltage comes supercharging filtering benchmark voltage to become the control pulse signal comes time per unit again through Small-sized C PU calculation display through the electronic loop of supercharging substrate.
5. the method for detection direct current machine revolution according to claim 1; It is characterized in that; In the said motor (1); Permanent magnetism stone rotating part is located at the outside, stator electromagnet Spin Control portion is located at the inboard, and the transducer (2) that is used to detect changes of magnetic field is placed on the right angle orientation of magnetic field, the outside survey of electromagnet or the like.
6. the method for detection direct current machine revolution according to claim 1; It is characterized in that in the said motor (1), permanent magnetism stone portion is located at the outside; The stator electromagnet rotating part is located at interior survey, and the transducer (2) that is used to detect changes of magnetic field is placed on the vertical direction of magnetic field, the outside survey of electromagnet or the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102061903A CN102710192A (en) | 2012-06-21 | 2012-06-21 | Method for detecting revolution number of direct-current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102061903A CN102710192A (en) | 2012-06-21 | 2012-06-21 | Method for detecting revolution number of direct-current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102710192A true CN102710192A (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102061903A Pending CN102710192A (en) | 2012-06-21 | 2012-06-21 | Method for detecting revolution number of direct-current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102710192A (en) |
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2012
- 2012-06-21 CN CN2012102061903A patent/CN102710192A/en active Pending
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| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121003 |