CN105573349A - Limiting sensor and limiting device - Google Patents
Limiting sensor and limiting device Download PDFInfo
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- CN105573349A CN105573349A CN201510931297.8A CN201510931297A CN105573349A CN 105573349 A CN105573349 A CN 105573349A CN 201510931297 A CN201510931297 A CN 201510931297A CN 105573349 A CN105573349 A CN 105573349A
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- adjustable
- magnetic pole
- current source
- magnetic
- limiting
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
The invention provides a limiting sensor and a limiting device. The sensor comprises a magnetic reed switch, an adjustable magnetic pole and an adjustable current source. The adjustable magnetic pole is connected with the adjustable current source. Magnetic intensity of the adjustable magnetic pole is controlled by adjusting output voltage of the adjustable current source so as to realize control of limiting signals. The defect that the size is large when a photoelectric sensor is used as the limiting sensor can be compensated, and the characteristics that magnetic intensity of a permanent magnet cannot be adjusted and demagnetization is liable to occur can be compensated. The adjustable magnetic pole and the magnetic reed switch are reasonably matched to be applied to flaw detection equipment so that the miniature limiting and zero point sensor with small size and adjustable flexibility is provided, and thus the size of the flaw detection equipment and measurement equipment is enabled to be effectively reduced and the requirements of higher space utilization rate can be met.
Description
Technical field
The present invention relates to sensor detecting, is a kind of limit sensors and stop means concretely.
Background technology
Carrying out in the Ultrasonic Detection process of tracer signal, needing to control the movement travel of probe, because needing the feedback of positive and negative spacing and initial point signal in motion control process, therefore needing positive and negative limit sensors and zero point sensor.Tradition positive and negative limit sensors and the sensor bulk at zero point larger.
Travel switch is in daily use in the middle of motion control, particularly correlation photoelectric travel limit switch.The kind of correlation travel switch has a variety of, mainly contains the optoelectronic switches such as L-type correlation optoelectronic switch, T-shaped correlation optoelectronic switch, F type correlation optoelectronic switch, R type.As shown in Figure 1, owing to there being the object of shading light in groove inside, so have corresponding position signalling such as limit signal or zero signal to feed back to the input end that PLC etc. controls controller.Thus complete corresponding spaced motion controlling functions and need small change point motion control function.If adopt this photoelectric sensor to do the feedback of zero signal or limit signal, its shortcoming is that the volume of this type of photoelectric sensor is all larger, for Omron brand micro photo electric switch, the minimum correlation type notch sensor of current volume is of a size of: the wide * of long * is high=and 31.1mm*19.1mm*12mm.And the size that installing space is greater than sensor just can meet assembling demand.Therefore the feedback using optoelectronic switch to do zero point and limit signal can have a strong impact on the size of probe bracket.
Also the feedback using magnetic reed switch to do limit signal and zero signal is had in motion control.Because of magnetic reed switch closed needs outside magnetic bodies just can conducting in certain distance, so probe bracket needs install permanent magnet, as shown in Figure 2.And using permanent magnet shortcoming to be have two: 1. the ferromagnetic intensity of magnetic needs to go adjustment by the volume of controlling magnet, and processing is inconvenient, and once select rear magnetic field intensity not regulate; 2. permanent magnetic by demagnetization, therefore can affect control accuracy under certain external condition.
Summary of the invention
In order to make up the shortcoming of photoelectric sensor volume in prior art, make volume less sensor, thus make checkout equipment complete measuring ability under more narrow space, make up the shortcoming that alnico magnets cannot adjust magnetic and demagnetization, make testing process more reliable.Embodiments provide a kind of limit sensors, comprising: magnetic reed switch, adjustable magnetic pole and adjustable current source; Described adjustable magnetic pole is connected with adjustable current source, is controlled by the magnetic power of output voltage to adjustable magnetic pole adjusting adjustable current source with the control realized limit signal.
In the embodiment of the present invention, limit sensors also comprises: potentiometer, is arranged between described adjustable magnetic pole and adjustable current source, is controlled the coil current of adjustable magnetic pole to realize the control to adjustable magnetic pole magnetic power by the resistance adjusting potentiometer.
Meanwhile, the present invention also provides a kind of stop means, comprises limit sensors and controller, described limit sensors magnetic reed switch, adjustable magnetic pole and adjustable current source; Wherein,
Described adjustable magnetic pole is connected with adjustable current source, controls with the control realized limit signal by the magnetic power of output voltage to adjustable magnetic pole adjusting adjustable current source; Controller, is connected with adjustable current source.
The present invention compensate for the larger shortcoming of photo sensor size, compensate for the non-adjustable and feature of easily demagnetization of alnico magnets magnetic intensity.
For above and other object of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and coordinate institute's accompanying drawings, be described in detail below.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram penetrating formula photoelectric travel limit switch in prior art;
Fig. 2 is the schematic diagram using magnetic reed switch to do limit signal feedback in prior art;
Fig. 3 is the schematic diagram embodiments providing a kind of limit sensors;
Fig. 4 is the schematic diagram of limit sensors loop conducting state in the embodiment of the present invention;
Fig. 5 is the embodiment schematic diagram of a kind of restraint device of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 3, embodiments provide a kind of limit sensors, comprising: magnetic reed switch 301, adjustable magnetic pole 302 and adjustable current source 303; Adjustable magnetic pole 302 is connected with adjustable current source 303, is controlled by the magnetic power of output voltage to adjustable magnetic pole 302 adjusting adjustable current source 303 with the control realized limit signal.
In the present embodiment, the structure of magnetic reed switch is:
Magnetic reed switch is by two panels low magnetic hysteresis ferrous reed, parallel some overline of placement afterbody becomes gap, this low magnetic hysteresis ferrous reed spends noble metal to guarantee optimum performance containing on 50% nickel and the elongated partially flat reed of 50% ferrous components, and noble metal generally uses rhodium, ruthenium and gold.This two reed is completely sealed on the glass tube pouring inert gas.When there being magnetic field, the opposite polarity magnetic of two reed overlappings, this magnetic is enough greatly just be pulled together to make loop conducting, as shown in Figure 4, for low magnetic hysteresis ferrous reed is pulled together the state of loop conducting.
In the embodiment of the present invention, the structure of adjustable magnetic pole is:
1, low magnetic hysteresis metal, this example uses metallic iron.
2, the current source that size of current is adjustable.
3, enameled wire, is mainly used in the winding of metal.
In the embodiment of the present invention, limit sensors also comprises: potentiometer, is arranged between adjustable magnetic pole 302 and adjustable current source 303, is controlled the coil current of adjustable magnetic pole to realize the control to adjustable magnetic pole magnetic power by the resistance adjusting potentiometer.
Meanwhile, the present invention also provides a kind of stop means, comprises limit sensors and controller, limit sensors magnetic reed switch, adjustable magnetic pole and adjustable current source; Wherein,
Adjustable magnetic pole is connected with adjustable current source, controls with the control realized limit signal by the magnetic power of output voltage to adjustable magnetic pole adjusting adjustable current source;
Controller, is connected with adjustable current source.
As shown in Figure 5, for an embodiment schematic diagram of stop means of the present invention, current source uses the output of the AO of PLC S7200PLC, to connect potentiometer simultaneously, the size of electric current in the coil of adjustable magnetic pole can be controlled by the resistance of the output and potentiometer that regulate AO voltage, thus the power of magnetic pole magnetic can be regulated.And then the closed position of school magnetic reed switch can be tried.The number of turn of coil can adjust dynamically, and use 30 circles in the present embodiment, enameled wire adopts 0.5mm
2wire diameter.
The present invention compensate for and adopts photoelectric sensor as the larger-size shortcoming of limit sensors, compensate for the non-adjustable and feature of easily demagnetization of alnico magnets magnetic intensity.Adopt the application of the reasonable coordination of adjustable magnetic pole and magnetic reed switch on defect-detecting equipment, provide small size, the spacing and zero point sensor of sensitivity is adjustable microminiature, thus make defect-detecting equipment, the volume of measuring equipment effectively reduces the higher requirement of space availability ratio.
Apply specific embodiment in the present invention to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (4)
1. a limit sensors, is characterized in that, described sensor comprises: magnetic reed switch, adjustable magnetic pole and adjustable current source; Wherein,
Described adjustable magnetic pole is connected with adjustable current source, is controlled by the magnetic power of output voltage to adjustable magnetic pole adjusting adjustable current source with the control realized limit signal.
2. limit sensors as claimed in claim 1, it is characterized in that, described limit sensors also comprises: potentiometer, be arranged between described adjustable magnetic pole and adjustable current source, controlled the coil current of adjustable magnetic pole by the resistance adjusting potentiometer to realize the control to adjustable magnetic pole magnetic power.
3. a stop means, is characterized in that, described device comprises limit sensors and controller, described limit sensors magnetic reed switch, adjustable magnetic pole and adjustable current source; Wherein,
Described adjustable magnetic pole is connected with adjustable current source, controls with the control realized limit signal by the magnetic power of output voltage to adjustable magnetic pole adjusting adjustable current source;
Controller, is connected with described adjustable current source.
4. stop means as claimed in claim 3, it is characterized in that, described limit sensors also comprises: potentiometer, is arranged between described adjustable magnetic pole and adjustable current source, is controlled the coil current of adjustable magnetic pole to realize the control to adjustable magnetic pole magnetic power by the resistance adjusting potentiometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510931297.8A CN105573349A (en) | 2015-12-15 | 2015-12-15 | Limiting sensor and limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510931297.8A CN105573349A (en) | 2015-12-15 | 2015-12-15 | Limiting sensor and limiting device |
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| CN105573349A true CN105573349A (en) | 2016-05-11 |
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| CN201510931297.8A Pending CN105573349A (en) | 2015-12-15 | 2015-12-15 | Limiting sensor and limiting device |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6411845B2 (en) * | 1980-10-09 | 1989-02-27 | Seiko Denshi Kogyo Kk | |
| CN2070178U (en) * | 1990-03-31 | 1991-01-30 | 中梁山煤矿 | Portable cardiac compression device |
| CN200979856Y (en) * | 2006-06-02 | 2007-11-21 | 林宸恺 | A structure to control the magnetic reed switch |
| CN101076218A (en) * | 2006-05-19 | 2007-11-21 | 清华大学 | Apparatus and method for generating different-energy X-ray and system for discriminating materials |
| CN102378503A (en) * | 2010-08-06 | 2012-03-14 | 鸿富锦精密工业（深圳）有限公司 | Electronic device combination |
| CN103093704A (en) * | 2013-01-18 | 2013-05-08 | 南京信息工程大学 | Magnetic suspension light-emitting diode (LED) rotary display screen |
| CN103137397A (en) * | 2013-02-06 | 2013-06-05 | 江苏海明医疗器械有限公司 | Electromagnet for magnetron |
| CN203760376U (en) * | 2014-01-02 | 2014-08-06 | 山东省科学院海洋仪器仪表研究所 | Magnetic proximity switch having directional memory effect |
| CN203785618U (en) * | 2014-03-24 | 2014-08-20 | 湖北三江航天万峰科技发展有限公司 | Detection device for light magnetic axes of metal balls |
| CN104217893A (en) * | 2014-09-26 | 2014-12-17 | 敬德强 | Large-current magnetic reed switch |
| CN204035759U (en) * | 2014-08-28 | 2014-12-24 | 黄哲铭 | A kind of moveable welding bench structure |
| CN104412192A (en) * | 2012-05-04 | 2015-03-11 | Chr.迈尔有限公司及两合公司 | Switching device |
| CN205318231U (en) * | 2015-12-15 | 2016-06-15 | 华北电力科学研究院有限责任公司 | Spacing sensor and stop device |
-
2015
- 2015-12-15 CN CN201510931297.8A patent/CN105573349A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6411845B2 (en) * | 1980-10-09 | 1989-02-27 | Seiko Denshi Kogyo Kk | |
| CN2070178U (en) * | 1990-03-31 | 1991-01-30 | 中梁山煤矿 | Portable cardiac compression device |
| CN101076218A (en) * | 2006-05-19 | 2007-11-21 | 清华大学 | Apparatus and method for generating different-energy X-ray and system for discriminating materials |
| CN200979856Y (en) * | 2006-06-02 | 2007-11-21 | 林宸恺 | A structure to control the magnetic reed switch |
| CN102378503A (en) * | 2010-08-06 | 2012-03-14 | 鸿富锦精密工业（深圳）有限公司 | Electronic device combination |
| CN104412192A (en) * | 2012-05-04 | 2015-03-11 | Chr.迈尔有限公司及两合公司 | Switching device |
| CN103093704A (en) * | 2013-01-18 | 2013-05-08 | 南京信息工程大学 | Magnetic suspension light-emitting diode (LED) rotary display screen |
| CN103137397A (en) * | 2013-02-06 | 2013-06-05 | 江苏海明医疗器械有限公司 | Electromagnet for magnetron |
| CN203760376U (en) * | 2014-01-02 | 2014-08-06 | 山东省科学院海洋仪器仪表研究所 | Magnetic proximity switch having directional memory effect |
| CN203785618U (en) * | 2014-03-24 | 2014-08-20 | 湖北三江航天万峰科技发展有限公司 | Detection device for light magnetic axes of metal balls |
| CN204035759U (en) * | 2014-08-28 | 2014-12-24 | 黄哲铭 | A kind of moveable welding bench structure |
| CN104217893A (en) * | 2014-09-26 | 2014-12-17 | 敬德强 | Large-current magnetic reed switch |
| CN205318231U (en) * | 2015-12-15 | 2016-06-15 | 华北电力科学研究院有限责任公司 | Spacing sensor and stop device |
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Application publication date: 20160511 |
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