CN202083402U - Non-contact type real-time position detecting device for electric actuator - Google Patents
Non-contact type real-time position detecting device for electric actuator Download PDFInfo
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- CN202083402U CN202083402U CN2011201952475U CN201120195247U CN202083402U CN 202083402 U CN202083402 U CN 202083402U CN 2011201952475 U CN2011201952475 U CN 2011201952475U CN 201120195247 U CN201120195247 U CN 201120195247U CN 202083402 U CN202083402 U CN 202083402U
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Abstract
The utility model discloses a non-contact type real-time position detecting device for an electric actuator, which comprises a rotating coding disc, a fixing magnetic field generating part, a hall sensor and a signal processing circuit, wherein the rotating coding disc is matched with a motor spindle of the electric actuator; the fixed magnetic field generating part is arranged on one side of the rotating coding disc; the hall sensor used for inducing a magnetic field is arranged at the other side of the rotating coding disc; and the signal processing circuit is used for receiving and processing an output signal of the hall sensor. The non-contact type real-time position detecting device for the electric actuator adopts the magnetoelectricity inducing technology to realize non-contact type position collection, overcomes the problems that a potentiometer or the other simulation measuring element detects the position of the actuator with complicated process, low speed and poor precision; and the operation and control are more convenient and low power consumption is realized.
Description
Technical field
The utility model relates to a kind of contactless real time position pick-up unit that is used for electric actuator, refers to especially a kind ofly be used for electric actuator and can realize that real-time valve position gathers the non-contact digital position detecting device.
Background technology
Electric actuator is a kind of important Detection ﹠ Controling equipment of realizing energy savings, protection environment, recycling economy; and the position probing of adjustment type electric actuator is a key link because position probing accurately whether directly have influence on production run, product quality and energy-saving consumption-reducing.This just requires the position detecting device of electric actuator not only will possess the position detecting function of high precision, high stability, also will possess the position detecting function after the power down.
At present, three kinds of modes of the general employing of the position detecting device of electric actuator, a kind of is the position output of adopting potentiometer or other analogue measurement element testing actuators, obtain the position feed back signal of potentiometer by AD conversion back, the process complexity, speed is low, low precision; A kind of is to adopt the photoelectric figure technology, the mode of employing system power supply, in case system's power down just can't realize the station acquisition after the power down, and the photoelectric type position harvester has relatively high expectations to working environment, is subject to problems affect such as dust; Having is exactly the control mode that adopts standby power supply again, but station acquisition device power consumption is big, regular replacing standby power supply, and increase reaches cost of serving after sale.
The utility model content
The utility model provides a kind of position detecting device of controlling easy, low in energy consumption electric operator.
A kind of contactless real time position pick-up unit of electric actuator comprises:
The rotary coding dish that matches with electric machine main shaft in the described electric actuator;
Be positioned at the fixed magnetic field generation part of described rotary coding dish one side;
Be positioned at the Hall element that is used for induced field of described rotary coding dish opposite side:
Be used to receive and handle the signal processing circuit of the output signal of described Hall element.
Described Hall element is the Hall switch magnetic induction sensor, variation that can induced field, and output digital signal.
Described rotary coding dish requires and can be driven by electric machine main shaft, and what the rotary coding dish can be coaxial is fixed on the electric machine main shaft, also can be coaxial be fixed on the worm screw that links with electric machine main shaft.
Because the rotary coding dish is between fixed magnetic field generation part and Hall element, can change magnetic field when therefore requiring the rotary coding dish to rotate, be evenly distributed with some breach as the outer circular shaft of preferred described rotary coding dish, promptly constitute the code-wheel of dentation.The material of rotary coding dish can adopt iron etc.
Fixed magnetic field generation part and Hall element are corresponding with described gap position with the vertical range of rotary coding disk axis, and Hall element can change by the magnetic field intensity of breach induction when the rotary coding dish rotated.
Described fixed magnetic field generation part can adopt magnet etc.In order to fix and to install and fix the magnetic field generation part, be provided with the magnetic pole location-plate, described fixed magnetic field generation part is installed on this magnetic pole location-plate.
As preferably, described fixed magnetic field generation part and Hall element are two couple of coupling mutually, and promptly two Hall elements are responded to the magnetic field that fixed magnetic field generation part corresponding with it sent respectively.Two fixed magnetic field generation parts are circumferential spaced apart the rotary coding dish, and are installed on the magnetic pole location-plate.
The rotary coding dish is subjected to motor to rotate cutting magnetic field, the magnetic field that changes makes corresponding Hall element produce the measured bursts waveform, by signal processing circuit the pulse signal that two sensors produce is carried out signal Processing, the calculating that produces the phase differential of waveform according to two Hall elements just can realize the detection to motor speed, traffic direction.
Described signal processing circuit comprises governor circuit that links to each other with the signal output part of Hall element and the power control circuit that is used for to Hall element and governor circuit power supply.
Wherein said governor circuit can adopt single-chip microcomputer, and communicates with the main control CPU of described electric actuator master control borad.
Described power control circuit comprises change-over switch and output control switch, described change-over switch has two optional input ends, be connected with standby power supply with power supply commonly used respectively, the output terminal of described change-over switch is connected with the power input of output control switch, and the power output end of output control switch is promptly as the output terminal of power control circuit.The signal input end access of output control switch also is controlled by described governor circuit.
The Hall element that the utility model adopts have to magnetic-field-sensitive, simple in structure, volume is little, frequency response is wide, output voltage changes greatly and advantage such as long service life, adopt Hall element to overcome photoelectric sensor and be subject to the dust influence, to using the higher defective of environmental requirement.
The contactless real time position pick-up unit of the utility model electric actuator adopts the magneto-electric induction technology to realize contactless station acquisition, overcome the position output procedure complexity of potentiometer or other analogue measurement element testing actuators, speed is low, the problem of low precision; Also overcome traditional photo-electric non-contacting position harvester and after system's power down, can't continue collection position information, can't realize real-time; Adopt the standby power supply technology, guarantee the real-time of position probing; Special control mode realizes the full-automatic switching of power supply mode, need not to increase the power supply of standby power supply and system and switch manipulation knob, make and control easylier, realized low-power consumption simultaneously, power consumption is low to moderate several mA, and the sustainable work of the battery of common 1200mAh is more than 5 years.
Description of drawings
Fig. 1 is the exploded view of the contactless real time position pick-up unit of a kind of electric actuator of the utility model;
Fig. 2 a, Fig. 2 b and Fig. 2 c are the structural representation of three different visual angles of rotary coding dish and region of interest in the pick-up unit of Fig. 1;
Fig. 3 is an electric actuator transmission structures synoptic diagram;
Fig. 4 is the synoptic diagram of signal processing circuit;
Fig. 5 is the synoptic diagram of power control circuit.
Description of reference numerals:
Embodiment
Shown in Fig. 1～3, a kind of contactless real time position pick-up unit 10 that is used for electric actuator of the utility model, rotary coding dish 4 is fixed on the worm screw 3 by dog screw and can rotates with motor 8, worm screw 3 among Fig. 1 (being equivalent to the worm screw 9 among Fig. 3) is connected with the output shaft of motor 8, drives the output shaft 12 of electric actuator when worm screw 9 is rotated by worm gear 11.
Pair of magnet 2 is inlaid in the magnet pilot hole of magnetic pole location-plate 1, and these two magnet are positioned at a side of rotary coding dish 4, certain distance separately on rotary coding dish 4 circumferential,
A pair of Hall element 6 (Hall switch magnetic induction sensor) is positioned at the opposite side of rotary coding dish 4, and the position is corresponding with two magnet respectively.
Signal processing circuit is integrated on the pcb board 5, and Hall element also all is fixed on the pcb board 5, and magnetic pole location-plate 1 and two dog screws of pcb board 5 usefulness are fixed on the actuator casing 7
Utilize the copper post that magnetic pole location-plate 1 and signal processing circuit pcb board 5 are interfixed, make simultaneously to produce the gap between the two, make Hall element form the magnetic field of constant intensity.
When motor 8 rotated, rotary coding dish 4 rotated with worm screw 3, and the tooth portion of dentation code-wheel stops magnetic field, and barbed portion is passed through magnetic field, thereby makes the pulse signal of Hall element 6 generation rules, and is sent to signal processing circuit.Signal processing circuit is judged motor speed, direction by handling this pulse signal.
Shown in Fig. 4,5, it is input port P1.0, the P1.1 that the output terminal of single-chip microcomputer IC1, the Hall element H1 of MSP430F20120 and Hall element H2 inserts single-chip microcomputer IC1 respectively that governor circuit in the signal processing circuit adopts by model, and single-chip microcomputer IC1 communicates by the main control CPU of spi bus mode and electric actuator master control borad.
Wherein in the power control circuit, need not to set up power supply switching controls button, use the automatic switchover that MOSFET field effect transistor Q5 (being equivalent to change-over switch) realizes that power supply power supply and system power, when system powers Q5 by, position detecting control circuit is partly powered by SYS-POW-OUT, and system's power supply is promptly arranged; During the system power down, the Q5 conducting connects Battery3.6V, is powered by battery; The power consumption of Hall element is very big, the grid of using MOSFET field effect transistor Q1 (being equivalent to output control switch) links to each other with the P2.0 pin EN-HELL of single-chip microcomputer MSP430F20120, by software Hall element is realized scan-type power supply control, the overall power of reduction system makes position detecting device low in energy consumption to several mA.Diode D1, diode D2 that rectification is used can also be set in the power control circuit as required, and be used to test or the elements such as resistance of dividing potential drop.
Principle of work of the present utility model is: through the stroke positioning action, count by the high-low level variation of Hall element output, set the zero point and the full journey of stroke, calculate real-time stroke by the mode of shared total travel number percent.The main control CPU of electric actuator master control board is accepted the motor operating instruction of outside input in running status, make motor positive and inverse or stall, worm screw is rotated with motor and produces corresponding displacement, position detecting device is counted by the high-low level variation of Hall element in this process, finish the mensuration that motor rotates the number of turns, phase differential by two Hall elements, judge the motor traffic direction, thereby determine the increase and decrease of count value, and calculate real-time stroke according to the mode of shared total travel number percent.Stroke zero point, full Cheng Yijing set and can store among the inside Flash of single-chip microcomputer, and when system's power down, stroke also can store among the inside Flash of single-chip microcomputer in real time, and guarantee information is not lost.Power control circuit has been realized the position probing when carrying out manual operation after system's power down, guarantees the real-time of positional information.
Claims (9)
1. the contactless real time position pick-up unit of an electric actuator is characterized in that, comprising:
The rotary coding dish that matches with electric machine main shaft in the described electric actuator;
Be positioned at the fixed magnetic field generation part of described rotary coding dish one side;
Be positioned at the Hall element that is used for induced field of described rotary coding dish opposite side:
Be used to receive and handle the signal processing circuit of the output signal of described Hall element.
2. the contactless real time position pick-up unit of electric actuator as claimed in claim 1 is characterized in that, described Hall element is the Hall switch magnetic induction sensor.
3. the contactless real time position pick-up unit of electric actuator as claimed in claim 2 is characterized in that, coaxial being fixed on the electric machine main shaft of described rotary coding dish, or coaxial being fixed on the worm screw that links with electric machine main shaft.
4. the contactless real time position pick-up unit of electric actuator as claimed in claim 3 is characterized in that, the outer circular shaft of described rotary coding dish is evenly distributed with some breach.
5. the contactless real time position pick-up unit of electric actuator as claimed in claim 4 is characterized in that, is provided with the magnetic pole location-plate, and described fixed magnetic field generation part is installed on this magnetic pole location-plate.
6. the contactless real time position pick-up unit of electric actuator as claimed in claim 5 is characterized in that, described fixed magnetic field generation part and Hall element are two couple of mating mutually.
7. as the contactless real time position pick-up unit of each described electric actuator of claim 1～6, it is characterized in that described signal processing circuit comprises governor circuit that links to each other with the signal output part of Hall element and the power control circuit that is used for to Hall element and governor circuit power supply.
8. the contactless real time position pick-up unit of electric actuator as claimed in claim 7, it is characterized in that, described power control circuit comprises change-over switch and output control switch, described change-over switch has two optional input ends, be connected with standby power supply with power supply commonly used respectively, the output terminal of described change-over switch is connected with the power input of output control switch, and the power output end of output control switch is promptly as the output terminal of power control circuit.
9. the contactless real time position pick-up unit of electric actuator as claimed in claim 8 is characterized in that, the signal input end access of described output control switch also is controlled by described governor circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201952475U CN202083402U (en) | 2011-06-10 | 2011-06-10 | Non-contact type real-time position detecting device for electric actuator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201952475U CN202083402U (en) | 2011-06-10 | 2011-06-10 | Non-contact type real-time position detecting device for electric actuator |
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| CN202083402U true CN202083402U (en) | 2011-12-21 |
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| CN2011201952475U Expired - Lifetime CN202083402U (en) | 2011-06-10 | 2011-06-10 | Non-contact type real-time position detecting device for electric actuator |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797893A (en) * | 2012-08-16 | 2012-11-28 | 天津开利达控制技术开发有限公司 | Electric actuator with photoelectric positioning mechanism |
| CN103925937A (en) * | 2013-10-28 | 2014-07-16 | 芜湖莫森泰克汽车科技有限公司 | Processing method for position Hall switches |
| CN105608489A (en) * | 2015-12-16 | 2016-05-25 | 中国石油天然气股份有限公司 | Hall effect-based automatic ball collecting and counting method for oil field |
| CN106052723A (en) * | 2016-06-01 | 2016-10-26 | 江苏森尼克电子科技有限公司 | Magnetic encoder, magnetic code disc thereof and magnetic code disc manufacturing method |
| CN106704639A (en) * | 2016-12-02 | 2017-05-24 | 深圳市恒永达科技有限公司 | Plane-sealing flow channel selection valve |
| CN107421430A (en) * | 2017-06-21 | 2017-12-01 | 宁波杜亚机电技术有限公司 | Manual tubular motor with memory function |
| CN110501797A (en) * | 2019-09-20 | 2019-11-26 | 合肥英睿***技术有限公司 | A kind of infrared lens device that can detect identification visual field automatically |
| CN111237399A (en) * | 2019-08-14 | 2020-06-05 | 深圳市智擎新创科技有限公司 | Servo steering engine capable of outputting high-precision position information |
| CN113532250A (en) * | 2021-07-07 | 2021-10-22 | 浙江吉利控股集团有限公司 | Actuator position detection method, device, storage medium and device |
-
2011
- 2011-06-10 CN CN2011201952475U patent/CN202083402U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797893A (en) * | 2012-08-16 | 2012-11-28 | 天津开利达控制技术开发有限公司 | Electric actuator with photoelectric positioning mechanism |
| CN103925937A (en) * | 2013-10-28 | 2014-07-16 | 芜湖莫森泰克汽车科技有限公司 | Processing method for position Hall switches |
| CN105608489A (en) * | 2015-12-16 | 2016-05-25 | 中国石油天然气股份有限公司 | Hall effect-based automatic ball collecting and counting method for oil field |
| CN105608489B (en) * | 2015-12-16 | 2018-01-02 | 中国石油天然气股份有限公司 | Hall effect-based automatic ball collecting and counting method for oil field |
| CN106052723A (en) * | 2016-06-01 | 2016-10-26 | 江苏森尼克电子科技有限公司 | Magnetic encoder, magnetic code disc thereof and magnetic code disc manufacturing method |
| CN106052723B (en) * | 2016-06-01 | 2019-12-27 | 江苏森尼克电子科技有限公司 | Magnetic encoder |
| CN106704639A (en) * | 2016-12-02 | 2017-05-24 | 深圳市恒永达科技有限公司 | Plane-sealing flow channel selection valve |
| CN107421430A (en) * | 2017-06-21 | 2017-12-01 | 宁波杜亚机电技术有限公司 | Manual tubular motor with memory function |
| CN111237399A (en) * | 2019-08-14 | 2020-06-05 | 深圳市智擎新创科技有限公司 | Servo steering engine capable of outputting high-precision position information |
| CN110501797A (en) * | 2019-09-20 | 2019-11-26 | 合肥英睿***技术有限公司 | A kind of infrared lens device that can detect identification visual field automatically |
| CN113532250A (en) * | 2021-07-07 | 2021-10-22 | 浙江吉利控股集团有限公司 | Actuator position detection method, device, storage medium and device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111221 |