CN201575818U - Device for detecting absolute coding position of electric executing mechanism of valve - Google Patents
Device for detecting absolute coding position of electric executing mechanism of valve Download PDFInfo
- Publication number
- CN201575818U CN201575818U CN2009202829818U CN200920282981U CN201575818U CN 201575818 U CN201575818 U CN 201575818U CN 2009202829818 U CN2009202829818 U CN 2009202829818U CN 200920282981 U CN200920282981 U CN 200920282981U CN 201575818 U CN201575818 U CN 201575818U
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- rotating shaft
- executing mechanism
- coding position
- detecting device
- electric valve
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Abstract
The utility model relates to a device for detecting absolute coding position of an electric executing mechanism of a valve, comprising a hollow bracket, a coder, a rotating shaft, a shielding plate, an input gear and an alnico, wherein the rotating shaft is movably arranged in the bracket; the shielding plate is arranged on the top part of the bracket; the coder is arranged between the bracket and the shielding plate; the upper end of the rotating shaft is fixed with the alnico; and the lower end of the rotating shaft is fixed with the input gear. The device has the advantages of simple structure, convenient installation, high detection precision, and stable transmission.
Description
Technical field
The utility model relates to electric valve executing mechanism, relates in particular to a kind of specific coding position detecting device of electric valve executing mechanism.
Background technology
Electric valve executing mechanism (or electric device for valve) valve position operation precision prescribed is higher at present, for adapting to the requirement of present industrial automatization, and must the design position detecting device that a kind of volume is little, precision is high, cost is low.
The utility model content
The technical problems to be solved in the utility model is: the specific coding position detecting device that the electric valve executing mechanism that a kind of volume is little, precision is high, cost is low is provided.
In order to overcome the defective that exists in the background technology, the technical scheme that its technical matters that solves the utility model adopts is: a kind of specific coding position detecting device of electric valve executing mechanism, this device comprises hollow stent, scrambler, rotating shaft, barricade, input gear and magnet steel, described rotating shaft is movably set in the support, barricade is arranged at the top of support, be provided with scrambler between support and the barricade, the upper end of rotating shaft is fixed with magnet steel, and the lower end of rotating shaft is fixed with the input gear.
According to another embodiment of the present utility model, the specific coding position detecting device of electric valve executing mechanism further comprises on the described barricade offering through hole.
According to another embodiment of the present utility model, the specific coding position detecting device of electric valve executing mechanism comprises that further described support symmetria bilateralis is extended with boss, has mounting hole on this boss.
According to another embodiment of the present utility model, the specific coding position detecting device of electric valve executing mechanism comprises that further described scrambler is an AS5045 non-contact type magnetic rotary encoder.
According to another embodiment of the present utility model, the specific coding position detecting device of electric valve executing mechanism comprises that further described magnet steel is bipolar magnet steel.
According to another embodiment of the present utility model, the specific coding position detecting device of electric valve executing mechanism comprises that further described rotating shaft is connected by bearing with support.
The utility model has solved the defective that exists in the background technology, and the utility model is simple in structure, and is easy for installation, the accuracy of detection height, and transmission is stable.
Description of drawings
Fig. 1 is the structural representation of preferred embodiment of the present utility model;
Fig. 2 is scrambler 5 core terminal connection diagrams;
Fig. 3 is the absolute angular position output timing diagram;
Embodiment
With preferred embodiment the utility model is described in further detail in conjunction with the accompanying drawings now.These accompanying drawings are the synoptic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
As shown in Figure 1, a kind of specific coding position detecting device of electric valve executing mechanism, this device comprises hollow stent 1, scrambler 2, rotating shaft 3, barricade 4, input gear 7 and magnet steel 6, described rotating shaft 3 is movably set in the support 1, barricade 4 is arranged at the top of support 1, be provided with scrambler 2 between support 1 and the barricade 4, the upper end of rotating shaft 3 is fixed with magnet steel 6, and the lower end of rotating shaft 3 is fixed with input gear 7.
Adopt AS5045 non-contact type magnetic rotary encoder 2, can accurately measure the angle in whole 360 ° of scopes, its resolution can reach 0.0879 °, can provide digitalized data (numerical range 0～4095) with the form of serial bit stream, scrambler 2 has internal voltage regulator, may operate under 3.3V or the 5V supply voltage.Absolute encoder 2 is by the input gear, detect gearing mesh on the drive disk assembly with travel position on the electric valve executing mechanism (or electric device for valve), drive rotating shaft 3 and rotate, and then the magnet steel 6 that drives on being fixed in the rotating shaft 3 rotates the executing location measuring ability.In addition, moving axially of topworks worm screw is converted to the rotation of crank shaft by crank throw, and 7 engagements of the input gear by the gear on the crank shaft and this position detecting device, thereby the torque that also can make this specific coding position detecting device be used for electric valve executing mechanism detects.
Its principle of work is as follows:
During energising work, absolute encoder 2 can read current position signal by 5 core connection terminal output signals.The AS5045 chip is installed in the centre position of scrambler 2, and magnet steel 6 is installed in the groove of rotating shaft 3, over against the AS5045 chip, but does not contact, and keeps suitable spacing.Magnet steel 6 is followed rotating shaft 3 and is rotated, and when rotating shaft 3 is rotated or during change in location, the position signalling that reads is respective change thereupon also, in whole 0～360 ° of scope, the position signalling that reads is changed to 0～4095, and promptly when rotating shaft was rotated 0.0879 °, corresponding digital quantity signal was changed to 1.Because rotating shaft 3 is driven by input gear 7,, can reach the different resolution that require by the ratio of gear of change with input gear pair (and external teeth wheel set).
Fig. 2 is 5 core terminal connection diagrams of scrambler 2, and Fig. 3 is the absolute angular position output timing diagram, and wherein, when CS is a logic low, data outputs (DO) will become logic high and start read operation from high resistant (three-state) state.
1, through behind the shortest time tCLK FE, data are latching in the Output Shift Register at the 1st negative edge of CLK.
2, each follow-up CLK rising edge will shift out 1 bit data.
3, this serial word comprises 18 bit data, and preceding 12 is angle information D[11:0], back 6 comprise system information, relate to the validity of data, such as OCF, COF, LIN, parity check sum magnetic field state (increasing/reduce) etc.
4, start follow-up measurement by a CSn " height " pulse (minimum length in time is tCSn).
5, sequential requires as following table:
| Symbol | Minimum value | Representative value | Maximal value | Unit | Note |
| t DO active | 100 | ns | The read operation of the time degree position between CSn negative edge and data output activate | ||
| t CLKFE | 500 | ns | Time between the 1st negative edge of CSn negative edge and CLK | ||
| t CLK/2 | 500 | ns | The rising edge of CLK once shifts out 1 | ||
| t DO valid | 357 | 375 | 394 | ns | Time between CLK rising edge and the data output effectively |
| t DO vistate | 100 | ns | In the end after one, the DO pin becomes " three-state " again | ||
| t CSn | 500 | ns | The CSn=high level; Be used to start the read operation of next angle position |
With above-mentioned foundation desirable embodiment of the present utility model is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this utility model technological thought.The technical scope of this utility model is not limited to the content on the instructions, must determine its technical scope according to the claim scope.
Claims (6)
1. the specific coding position detecting device of an electric valve executing mechanism, it is characterized in that: this device comprises hollow stent, scrambler, rotating shaft, barricade, input gear and magnet steel, described rotating shaft is movably set in the support, barricade is arranged at the top of support, be provided with scrambler between support and the barricade, the upper end of rotating shaft is fixed with magnet steel, and the lower end of rotating shaft is fixed with the input gear.
2. the specific coding position detecting device of electric valve executing mechanism as claimed in claim 1 is characterized in that: offer through hole on the described barricade.
3. the specific coding position detecting device of electric valve executing mechanism as claimed in claim 1, it is characterized in that: described support symmetria bilateralis is extended with boss, has mounting hole on this boss.
4. the specific coding position detecting device of electric valve executing mechanism as claimed in claim 1, it is characterized in that: described scrambler is an AS5045 non-contact type magnetic rotary encoder.
5. the specific coding position detecting device of electric valve executing mechanism as claimed in claim 1, it is characterized in that: described magnet steel is bipolar magnet steel.
6. the specific coding position detecting device of electric valve executing mechanism as claimed in claim 1, it is characterized in that: described rotating shaft is connected by bearing with support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202829818U CN201575818U (en) | 2009-12-23 | 2009-12-23 | Device for detecting absolute coding position of electric executing mechanism of valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202829818U CN201575818U (en) | 2009-12-23 | 2009-12-23 | Device for detecting absolute coding position of electric executing mechanism of valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201575818U true CN201575818U (en) | 2010-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202829818U Expired - Fee Related CN201575818U (en) | 2009-12-23 | 2009-12-23 | Device for detecting absolute coding position of electric executing mechanism of valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201575818U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102109361A (en) * | 2010-12-15 | 2011-06-29 | 天津埃柯特阀门控制设备有限公司 | Position detection device for electric executing mechanism |
| CN102537471A (en) * | 2011-12-31 | 2012-07-04 | 聚光科技(杭州)股份有限公司 | Method and device for positioning multi-channel direction selecting valve |
-
2009
- 2009-12-23 CN CN2009202829818U patent/CN201575818U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102109361A (en) * | 2010-12-15 | 2011-06-29 | 天津埃柯特阀门控制设备有限公司 | Position detection device for electric executing mechanism |
| CN102109361B (en) * | 2010-12-15 | 2012-02-01 | 天津埃柯特测控技术有限公司 | Position detection device for electric executing mechanism |
| CN102537471A (en) * | 2011-12-31 | 2012-07-04 | 聚光科技(杭州)股份有限公司 | Method and device for positioning multi-channel direction selecting valve |
| CN102537471B (en) * | 2011-12-31 | 2013-07-10 | 聚光科技(杭州)股份有限公司 | Method and device for positioning multi-channel direction selecting valve |
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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 |
Owner name: YANGZHOU ELECTRIC POWER EQUIPMENT MANUFACTURE FACT Free format text: FORMER NAME: YANGZHOU ELECTRIC POWER EQUIPMENT REPAIR + MANUFACTURE FACTORY |
|
| CP03 | Change of name, title or address |
Address after: 225003 Wenchang Middle Road, Jiangsu, China, No. 77, No. Patentee after: Company limited of Yangzhou Electric Power Equipment Repair & Manufacture Factory Address before: 225003 No. 77 middle Wenchang Road, Guangling District, Jiangsu, Yangzhou Patentee before: Yangzhou Electric Power Equipment Repair & Manufacture Factory |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100908 Termination date: 20161223 |