CN204008688U - A kind of DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology - Google Patents
A kind of DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology Download PDFInfo
- Publication number
- CN204008688U CN204008688U CN201420405061.1U CN201420405061U CN204008688U CN 204008688 U CN204008688 U CN 204008688U CN 201420405061 U CN201420405061 U CN 201420405061U CN 204008688 U CN204008688 U CN 204008688U
- Authority
- CN
- China
- Prior art keywords
- magnetic flux
- flux leakage
- leakage inspecting
- measurement mechanism
- motor speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
The utility model discloses a kind of DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology, comprise Magnetic Flux Leakage Inspecting inductive circuit, comparer, umber of pulse detecting device, pulse-width detector, rotating speed display device; Magnetic Flux Leakage Inspecting inductive circuit, comparer, umber of pulse detecting device, pulse-width detector, rotating speed display device are connected successively, and are connected with direct current generator.DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology of the present utility model can solve existing measurement mechanism structural redundancy, install complicated, volume is large, high in cost of production problems, realize DC motor speed and detect accurately and measurement mechanism object easy for installation.
Description
Technical field
The utility model relates to motor speed measurement technical field, is specifically related to a kind of DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology.
Background technology
Along with scientific and technological development, direct current generator uses each corner that has entered into our life, as safety monitoring equipment, automatic control equipment etc., in our life, is seen everywhere.But how the DC motor speed using in these equipment is measured, it is a relatively stubborn problem.Traditional DC motor speed measurement mechanism, all adopt Hall element to add again other electronic component and combined measurement rotating speed functions, if publication number is the Chinese utility model patent of CN203216938 U, a kind of Simple electric tachometer is disclosed, comprise inductive head, profile of tooth feedback disk, inductive head is arranged on profile of tooth feedback disk, profile of tooth feedback disk is arranged on motor shaft, in this pick-up unit, adopted the multi-parts such as Hall element and profile of tooth feedback disk to form, structure relative complex, installation accuracy requires very high.
Given this, need to design a kind of novel DC motor speed measurement mechanism, sensor construction is simple, easy for installation, and detection is accurate and cost is low.
Utility model content
In order to solve the problems of the technologies described above, the utility model provides a kind of DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology, comprises Magnetic Flux Leakage Inspecting inductive circuit, comparer, umber of pulse detecting device, pulse-width detector, rotating speed display device; Magnetic Flux Leakage Inspecting inductive circuit, comparer, umber of pulse detecting device, pulse-width detector, rotating speed display device are connected successively, and are connected with direct current generator; This DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology can solve existing measurement mechanism structural redundancy, install complicated, volume is large, high in cost of production problems, realize DC motor speed and detect accurately and measurement mechanism object easy for installation.
To achieve these goals, the utility model adopts following technical scheme.
A kind of DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology, be connected in direct current generator, it comprises Magnetic Flux Leakage Inspecting inductive circuit, comparer, umber of pulse detecting device, rotating speed display device, Magnetic Flux Leakage Inspecting inductive circuit is connected with the rotor of direct current generator, the input end of comparer is connected with Magnetic Flux Leakage Inspecting inductive circuit, the input end of umber of pulse detecting device is connected with the output terminal of comparer, and the output terminal of umber of pulse detecting device connects rotating speed display device.
Preferably, described Magnetic Flux Leakage Inspecting inductive circuit comprises inductor and sampling resistor.
In above-mentioned arbitrary technical scheme, preferably, described inductor adopts the coiling of flexible hollow telefault.
In above-mentioned arbitrary technical scheme, preferably, the flexible hollow telefault of described inductor sticks the rotor surface in direct current generator.
In above-mentioned arbitrary technical scheme, preferably, described sampling resistor and inductor are connected in parallel.
In above-mentioned arbitrary technical scheme, preferably, one end of described sampling resistor is connected with the negative terminal of comparer, and with the negative terminal common ground of comparer.
In above-mentioned arbitrary technical scheme, preferably, the other end of described sampling resistor is connected with the anode of comparer.
In above-mentioned arbitrary technical scheme, preferably, this device also comprises pulse-width detector, and described pulse-width detector and umber of pulse detecting device are connected in parallel.
In above-mentioned arbitrary technical scheme, preferably, the input end of described pulse-width detector is connected with the output terminal of comparer, and the output terminal of described pulse-width detector connects rotating speed display device.
In above-mentioned arbitrary technical scheme, preferably, described rotating speed display device comprises display chip circuit and light-emitting diode display.
DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology of the present utility model comprises Magnetic Flux Leakage Inspecting inductive circuit, comparer, umber of pulse detecting device, pulse-width detector, rotating speed display device, Magnetic Flux Leakage Inspecting inductive circuit is connected with the rotor of direct current generator, the input end of comparer is connected with Magnetic Flux Leakage Inspecting inductive circuit, the input end of umber of pulse detecting device is connected with the output terminal of comparer, the output terminal of umber of pulse detecting device connects rotating speed display device, pulse-width detector and umber of pulse detecting device are connected in parallel, the input end of pulse-width detector is connected with the output terminal of comparer, the output terminal of pulse-width detector connects rotating speed display device, rotating speed display device comprises display chip circuit and light-emitting diode display.
DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology of the present utility model, its Magnetic Flux Leakage Inspecting inductive circuit comprises inductor and sampling resistor, inductor adopts the coiling of flexible hollow telefault, flexible hollow telefault can directly stick the rotor surface in direct current generator, volume is little, easy for installation; Sampling resistor and inductor are connected in parallel; One end of sampling resistor is connected with the negative terminal of comparer, and with the negative terminal common ground of comparer; The other end of sampling resistor is connected with the anode of comparer.
Compared with prior art, the DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology of the present utility model has the following advantages:
(1) structure is very simple, installs very conveniently, and installation site is not had to specific (special) requirements;
(2) adopt conventional electric original paper, cost is very low;
(3) utilize the rotation of Magnetic Flux Leakage Inspecting inductance detection DC motor rotor, highly sensitive, accuracy of detection is high.
Accompanying drawing explanation
Fig. 1 is according to the measurement mechanism structural representation of a preferred embodiment of the DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology of the present utility model;
Fig. 2 is according to the measurement mechanism of a preferred embodiment of the DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology of the present utility model Magnetic Flux Leakage Inspecting inductance place waveform schematic diagram when direct current generator rotates;
Fig. 3 is according to the square-wave pulse waveform schematic diagram of the measurement mechanism of a preferred embodiment of the DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology of the present utility model comparer output when direct current generator rotates;
Reference numeral:
1, direct current generator, 2, Magnetic Flux Leakage Inspecting inductive circuit, 3, comparer, 4, umber of pulse detecting device, 5, pulse-width detector, 6, rotating speed display device.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated, below describe only conduct demonstration and explain, the utility model is not done to any pro forma restriction.
As shown in Figure 1, a kind of DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology, is connected in direct current generator 1, and it comprises Magnetic Flux Leakage Inspecting inductive circuit 2, comparer 3, umber of pulse detecting device 4, pulse-width detector 5, rotating speed display device 6.Magnetic Flux Leakage Inspecting inductive circuit 2 is connected with the rotor of direct current generator 1; The input end of comparer 3 is connected with Magnetic Flux Leakage Inspecting inductive circuit 2; The input end of umber of pulse detecting device 4 is connected with the output terminal of comparer 3, and the output terminal of umber of pulse detecting device 4 connects rotating speed display device 6; Pulse-width detector 5 is connected in parallel with umber of pulse detecting device 4, and the input end of pulse-width detector 5 is connected with the output terminal of comparer 3, and the output terminal of pulse-width detector 5 connects rotating speed display device 6.
Wherein, Magnetic Flux Leakage Inspecting inductive circuit 2 comprises inductor and sampling resistor, and inductor adopts the coiling of flexible hollow telefault, and flexible hollow telefault sticks in the rotor surface of direct current generator 1.Sampling resistor and inductor are connected in parallel; One end of sampling resistor is connected with the negative terminal of comparer 3, and with the negative terminal common ground of comparer 3; The other end of sampling resistor is connected with the anode of comparer 3.Rotating speed display device 6 comprises display chip circuit and light-emitting diode display.
The DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology is as shown in Figure 2 Magnetic Flux Leakage Inspecting inductance place waveform schematic diagram when direct current generator rotates, and the square-wave pulse waveform schematic diagram of the comparer output when direct current generator rotates of the DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology as shown in Figure 3, can find out, this DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology, adopt Magnetic Flux Leakage Inspecting inductance, Magnetic Flux Leakage Inspecting inductance is flexible hollow telefault, can directly stick in direct current generator surface, volume is little, easy for installation.Magnetic Flux Leakage Inspecting inductive circuit is connected with the rotor of direct current generator, and the input end of comparer is connected with Magnetic Flux Leakage Inspecting inductive circuit, and the input end of umber of pulse detecting device is connected with the output terminal of comparer, and the output terminal of umber of pulse detecting device connects rotating speed display device.Sampling resistor in parallel after the output of Magnetic Flux Leakage Inspecting inductance; Sampling resistor one end is connected with comparer negative terminal, and common ground; The sampling resistor other end is connected with comparer anode; Comparator output terminal connects umber of pulse detection module, and the output of umber of pulse detection module connects rotating speed display module; Comparator output terminal connects pulse width detection module, and the output of pulse width detection module connects rotating speed display module.
Device for detecting motor rotary speed of the prior art, is generally to consist of a lot of parts, complex structure, and installation requirement is high, if not accurately installation can cause accuracy of detection to reduce, and cost is very high.Compared with prior art, this DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology of the present utility model, structure is very simple, installs very conveniently, and installation site is not had to specific (special) requirements, and cost is very low; Utilize Magnetic Flux Leakage Inspecting inductance detection direct current generator to rotate highly sensitive, accuracy of detection is high.
The above is only that preferred implementation of the present utility model is described; not that scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that the common engineering technical personnel in this area make the technical solution of the utility model, all should fall in the definite protection domain of claims of the present utility model.
Claims (10)
1. the DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology, be connected in direct current generator, it is characterized in that: this device comprises Magnetic Flux Leakage Inspecting inductive circuit, comparer, umber of pulse detecting device, rotating speed display device, described Magnetic Flux Leakage Inspecting inductive circuit is connected with the rotor of direct current generator, the input end of described comparer is connected with Magnetic Flux Leakage Inspecting inductive circuit, the input end of described umber of pulse detecting device is connected with the output terminal of comparer, and the output terminal of described umber of pulse detecting device connects rotating speed display device.
2. the DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology as claimed in claim 1, is characterized in that: described Magnetic Flux Leakage Inspecting inductive circuit comprises inductor and sampling resistor.
3. the DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology as claimed in claim 2, is characterized in that: described inductor adopts the coiling of flexible hollow telefault.
4. the DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology as claimed in claim 3, is characterized in that: the flexible hollow telefault of described inductor sticks the rotor surface in direct current generator.
5. the DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology as claimed in claim 2, is characterized in that: described sampling resistor and inductor are connected in parallel.
6. the DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology as claimed in claim 2, is characterized in that: one end of described sampling resistor is connected with the negative terminal of comparer, and with the negative terminal common ground of comparer.
7. the DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology as claimed in claim 2, is characterized in that: the other end of described sampling resistor is connected with the anode of comparer.
8. the DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology as claimed in claim 1, is characterized in that: this device also comprises pulse-width detector, and described pulse-width detector and umber of pulse detecting device are connected in parallel.
9. the DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology as claimed in claim 8, is characterized in that: the input end of described pulse-width detector is connected with the output terminal of comparer, and the output terminal of described pulse-width detector connects rotating speed display device.
10. the DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology as claimed in claim 1, is characterized in that: described rotating speed display device comprises display chip circuit and light-emitting diode display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420405061.1U CN204008688U (en) | 2014-07-22 | 2014-07-22 | A kind of DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420405061.1U CN204008688U (en) | 2014-07-22 | 2014-07-22 | A kind of DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204008688U true CN204008688U (en) | 2014-12-10 |
Family
ID=52048667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420405061.1U Active CN204008688U (en) | 2014-07-22 | 2014-07-22 | A kind of DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204008688U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441543A (en) * | 2019-07-18 | 2019-11-12 | 浙江大学 | Core inductance formula angular speed sense measuring device and method based on magnetic saturation characteristic |
| CN110487522A (en) * | 2019-07-18 | 2019-11-22 | 日立楼宇技术（广州）有限公司 | Reliability of Microprocessor test equipment, method and device |
-
2014
- 2014-07-22 CN CN201420405061.1U patent/CN204008688U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441543A (en) * | 2019-07-18 | 2019-11-12 | 浙江大学 | Core inductance formula angular speed sense measuring device and method based on magnetic saturation characteristic |
| CN110487522A (en) * | 2019-07-18 | 2019-11-22 | 日立楼宇技术（广州）有限公司 | Reliability of Microprocessor test equipment, method and device |
| CN110487522B (en) * | 2019-07-18 | 2021-10-01 | 日立楼宇技术（广州）有限公司 | Action reliability testing equipment, method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102721923A (en) | Motor phase loss detection method | |
| CN204008688U (en) | A kind of DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology | |
| CN108828258A (en) | A kind of device and method improving fly-wheel motor rate accuracy | |
| CN105119541A (en) | DSP (digital signal processor)-based stepper motor control system | |
| CN103439907A (en) | Multi-signal-acquisition speed-measurement and reversed-rotation protection and control device and reversed-rotation judgment method | |
| CN202885776U (en) | Angle detector for multipolar revolver | |
| CN203011420U (en) | Brushless DC motor Hall sensor mounting position correcting mechanism | |
| CN202502102U (en) | Circuit for detecting rotation speed of machine tool spindle | |
| CN201368723Y (en) | Revolution detecting circuit for brush type direct current motor, motor limiting device and motor | |
| CN203630209U (en) | Current detecting circuit for overload protection and overcurrent protection of brushless direct current motor | |
| CN203422633U (en) | Multi-signal acquisition velocity measurement and reverse rotation protection control device | |
| CN105353309A (en) | Automobile wiper motor performance detection apparatus and detection method | |
| CN203732558U (en) | Three-phase asynchronous motor speed measuring circuit | |
| CN105487011B (en) | A kind of pitch motor multifunctional tester | |
| CN205540696U (en) | Take display of self test function | |
| CN203616384U (en) | Portable bearing current measuring device | |
| CN103090777B (en) | A kind of rotation position measurer and measuring method | |
| CN202975036U (en) | Main shaft rotating speed measuring device | |
| CN202119786U (en) | System for measuring rotating speed of aviation gasoline engine | |
| CN202939966U (en) | Device for measuring indexing, revolution and rotation speed of turntable | |
| CN202330451U (en) | Revolving speed measuring device | |
| CN201440075U (en) | Multifunctional rotation sensor | |
| CN205537499U (en) | Absolute angle detecting means | |
| CN205665260U (en) | Speed sensor based on singlechip | |
| CN104698213A (en) | Revolution meter for measuring revolving speed of electric fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Hangzhou City, Zhejiang province Yuhang District 311121 West Street Wuchang No. 998 building 4 room 412 Patentee after: ZHEJIANG TUWEI ELECTRICITY TECHNOLOGY CO., LTD. Address before: Hangzhou City, Zhejiang province Yuhang District 311121 West 1500 Street warehouse before 1 Building No. 5 layer Patentee before: Zhejiang Tuwei Power Technology Co., Ltd. |