CN201463910U - high-precision rotary encoder - Google Patents
high-precision rotary encoder Download PDFInfo
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- CN201463910U CN201463910U CN2009201086729U CN200920108672U CN201463910U CN 201463910 U CN201463910 U CN 201463910U CN 2009201086729 U CN2009201086729 U CN 2009201086729U CN 200920108672 U CN200920108672 U CN 200920108672U CN 201463910 U CN201463910 U CN 201463910U
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Abstract
The utility model relates to a high-precision rotary encoder, comprising a hall sensor, a signal amplifying and converting circuit, a digital signal processor, a program memory and an output signal converting interface; the hall sensor is arranged at the position where an object to be detected is arranged and generates an electrical signal along with the rotation of the object to be detected; the signal amplifying and converting circuit is electrically connected with the hall sensor and amplifies the electrical signal and converts the electrical signal into a digital signal; the signal amplifying and converting circuit is electrically connected with the digital signal processor transmits the converted digital signal into the digital signal processor; the digital signal processor is connected with the program memory and transfers the calculation procedure in the program memory to process the digital signal, so as to calculate the rotating speed of the object to be detected; the output end of the digital signal processor is connected with the output signal converting interface; in the utility model, as the hall sensor is adopted, the measuring precision and the stability of the encoder are improved.
Description
Technical field
The utility model relates to a kind of high precision rotary encoder, and is particularly a kind of based on Hall effect magneto-electric induction principle, adopts the high precision rotary encoder of magnetic induction device as inductor, belongs to the electromechanical equipment technical field.
Background technology
Rotary encoder is a kind of measurement mechanism that is used for Measuring Object rotational speed or angular velocity, is also referred to as code-disc.At present, rotary encoder is widely used in various automatic controls, fields of measurement, as machine-building, boats and ships, weaving, printing, aviation, military project, automobile making, testing machine, elevator, chemical industry, elevator etc., is a kind of electromechanical assembly that is of wide application.
The inductor of rotary encoder part generally has photoelectric induction type and two kinds of induction forms of wiper switch formula at present.
The photoelectric induction type inductor generally is made of light source and light activated element.Between light source and light activated element, be provided with a light trap plate that is carved with logical, the dark groove of annular.When rotating along with rotating object to be measured is relative between light source and the light activated element, light activated element produces corresponding electric signal along with seeing through the light that this light trap plate light and shade changes, thereby the rotational speed of rotating object to be measured is calculated.Though it is very high that this photoelectric induction type inductor measuring accuracy can be done.But its problem is that the relative position relation that its measuring accuracy depends between light source and the light activated element is enough desirable.When commercial Application, tend to finally have influence on its measuring accuracy owing to the reasons such as equipment attrition of machinery to be measured.
The rotating disc that wiper switch formula inductor is carved with conduction region and insulation layer by an interval constitutes.The sensor circuit of inductor contacts with this rotating disc, by with the conducting of rotating disc, the rotational speed that turn-off number of times calculates rotating object to be measured.But this inductor is owing to the restriction of receiving rotating disc groove technology, and its measuring accuracy often also is difficult to accomplish higher.
Therefore, for induction precision and the measuring stability that improves the rotary encoder inductor, we are necessary to design a kind of rotary encoder that adopts other form inductors.
Summary of the invention
The purpose of this utility model is to solve problems of the prior art, provides a kind of based on Hall effect magneto-electric induction principle, adopts the high precision rotary encoder of magnetic induction device as inductor.
The purpose of this utility model is achieved by following technical proposals:
The high precision rotary encoder is characterized in that: comprising: hall sensor, signal amplification and change-over circuit, digital signal processor, program storage and output signal translation interface;
Described hall sensor is arranged at the examined object place, produces electric signal along with the examined object rotation; This signal amplification is electrically connected with hall sensor with change-over circuit, described electric signal is amplified and converts digital signal to; This signal amplification is connected with digital signal processor with change-over circuit, and the digital signal after the conversion is sent to digital signal processor; This digital signal processor links to each other with described program storage, and the calculation procedure that is invoked in the program storage to be stored is handled described digital signal, to calculate the rotational speed of object under test; The output terminal of described digital signal processor links to each other with the output signal translation interface.
Described hall sensor is made of a pair of transmission and reception inductor; This Hall sends inductor and is connected with rotating object to be measured, rotates with this object; This Hall receives inductor and described signal amplifies and change-over circuit fixes; This Hall sends inductor, and this Hall reception inductor motion relatively produces corresponding electric signal thereby make Hall receive inductor along with the object under test rotation.
Described output signal translation interface is a kind of or several parallel connection combination in synchronous serial interface, increment circuit interface, width modulation interface, bi-directional synchronization serial line interface, Serial Peripheral Interface (SPI), the digital-to-analog conversion interface.
The beneficial effects of the utility model are: this high precision rotary encoder has improved the measuring accuracy and the measurement stability of scrambler owing to adopted the hall sensor that carries out measurement of inductance based on Hall effect.
Description of drawings
Fig. 1 is the structural representation of high precision rotary encoder.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As previously mentioned, existing photoelectric induction type inductor and wiper switch formula inductor as the rotary encoder inductor all exists the problem that measuring accuracy can't guarantee.The utility model then is that the electro permanent magnetic components and parts are adopted in design, realizes the inductor of scrambler by Hall effect, thereby improves the measuring accuracy of rotary encoder.When so-called Hall effect is meant the charge carrier of the action of a magnetic field in current-carrying metallic conductor, semiconductor, can produce the physical phenomenon of transverse electric potential difference.In actual applications, can utilize this physical phenomenon to measure this current-carrying metallic conductor or semi-conductive translational speed.The utility model promptly is to utilize electro permanent magnetic components and parts based on the Hall effect principle as inductor, and the rotational speed of object under test is measured.
Fig. 1 is the structural representation of this high precision rotary encoder.This high precision rotary encoder comprises: hall sensor 1, signal amplify and change-over circuit 2, digital signal processor 3, program storage 4 and output signal translation interface 5.
Described hall sensor 1 is made of a pair of transmission and reception inductor.This Hall sends inductor 11 and is connected with rotating object to be measured, rotates with this object.The main body that this Hall receives inductor 12 and scrambler fixes.This Hall sends inductor 11, and these Hall reception inductor 12 motions relatively produce corresponding electric signal thereby make Hall receive inductor 12 along with the object under test rotation.This signal amplifies with change-over circuit 2 and is electrically connected with Hall reception inductor 12, with electric signal amplification that it produced and convert digital signal to.This signal amplification is connected with digital signal processor 3 with change-over circuit 2, and the digital signal after the conversion is sent to digital signal processor 3.This digital signal processor 3 is the core data processor of rotary encoder.This digital signal processor 3 links to each other with described program storage 4, is invoked at the calculation procedure of being stored in the program storage 4 and handles by the digital signal that signal amplifies and change-over circuit 2 sends, to calculate the rotational speed of object under test.The output terminal of described digital signal processor 3 links to each other with output signal translation interface 5.Described output signal translation interface 5 is used for result of calculation with digital signal processor 3 and is converted to the back required signal format of level institute's link and exports.
Described output signal translation interface 5 is specifically as follows a kind of or several parallel connection combination in synchronous serial interface, increment circuit interface, width modulation interface, bi-directional synchronization serial line interface, Serial Peripheral Interface (SPI), the digital-to-analog conversion interface.
The high precision rotary encoder of said structure is mainly particularly in the inductor that adopts hall sensor as scrambler.Because, the electromagnetic induction that hall sensor is based on Hall effect carries out spatial position measuring, therefore requiring with respect to the relative position for the transceiver of inductor can be so not high as photoelectric sensor, and it is the sort of because of the long-term possibility that influence measuring accuracy of using also just to have eliminated the photoelectric induction type rotary encoder.On the other hand, the measuring principle of hall sensor is owing to be based on that Hall effect realizes, so its measuring accuracy can be higher than the metering system of this physical switch formula of wiper switch formula rotary encoder naturally.Simultaneously because hall sensor only needs a pair of permanent magnet can realize its measurement function, therefore than the inductor of existing rotary encoder can do more small and exquisite, to be suitable for the application of different industry control environment.
Claims (3)
1. the high precision rotary encoder is characterized in that: comprising: hall sensor, signal amplification and change-over circuit, digital signal processor, program storage and output signal translation interface;
Described hall sensor is arranged at the examined object place, produces electric signal along with the examined object rotation; This signal amplification is electrically connected with hall sensor with change-over circuit, described electric signal is amplified and converts digital signal to; This signal amplification is connected with digital signal processor with change-over circuit, and the digital signal after the conversion is sent to digital signal processor; This digital signal processor links to each other with described program storage, and the calculation procedure that is invoked in the program storage to be stored is handled described digital signal, to calculate the rotational speed of object under test; The output terminal of described digital signal processor links to each other with the output signal translation interface.
2. high precision rotary encoder as claimed in claim 1 is characterized in that: described hall sensor is made of a pair of transmission and reception inductor; This Hall sends inductor and is connected with rotating object to be measured, rotates with this object; This Hall receives inductor and described signal amplifies and change-over circuit fixes; This Hall sends inductor, and this Hall reception inductor motion relatively produces corresponding electric signal thereby make Hall receive inductor along with the object under test rotation.
3. high precision rotary encoder as claimed in claim 1 is characterized in that: described output signal translation interface is a kind of or several parallel connection combination in synchronous serial interface, increment circuit interface, width modulation interface, bi-directional synchronization serial line interface, Serial Peripheral Interface (SPI), the digital-to-analog conversion interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201086729U CN201463910U (en) | 2009-06-01 | 2009-06-01 | high-precision rotary encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201086729U CN201463910U (en) | 2009-06-01 | 2009-06-01 | high-precision rotary encoder |
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| Publication Number | Publication Date |
|---|---|
| CN201463910U true CN201463910U (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201086729U Expired - Fee Related CN201463910U (en) | 2009-06-01 | 2009-06-01 | high-precision rotary encoder |
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| CN (1) | CN201463910U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674078A (en) * | 2012-09-24 | 2014-03-26 | 昆山科致瑞斯传感技术有限公司 | Heavy-load rotary encoder |
-
2009
- 2009-06-01 CN CN2009201086729U patent/CN201463910U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674078A (en) * | 2012-09-24 | 2014-03-26 | 昆山科致瑞斯传感技术有限公司 | Heavy-load rotary encoder |
| CN103674078B (en) * | 2012-09-24 | 2017-01-18 | 昆山科致瑞斯传感技术有限公司 | Heavy-load rotary encoder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: KUNSHAN RACE SENSOR TECHNOLOGY CO., LTD. Owner name: BEIJING RACE AUTOMATION TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: LI XINHUA Effective date: 20110425 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110425 Address after: 100024 Beijing City, Chaoyang District Jing Yuan Sun Wah Court Residence Internazionale 27-102 Co-patentee after: KUNSHAN RACE SENSOR TECHNOLOGY CO., LTD. Patentee after: Beijing Branch Automation Technology Co., Ltd. Address before: 100024 Beijing City, Chaoyang District Jing Yuan Sun Wah Court Residence Internazionale 27-102 Patentee before: Li Xinhua |
|
| DD01 | Delivery of document by public notice |
Addressee: Beijing Branch Automation Technology Co., Ltd. Document name: Notification to Pay the Fees |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20130601 |