CN202372135U - Magnet displacement sensor - Google Patents
Magnet displacement sensor Download PDFInfo
- Publication number
- CN202372135U CN202372135U CN2011205466673U CN201120546667U CN202372135U CN 202372135 U CN202372135 U CN 202372135U CN 2011205466673 U CN2011205466673 U CN 2011205466673U CN 201120546667 U CN201120546667 U CN 201120546667U CN 202372135 U CN202372135 U CN 202372135U
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- magnet
- sensitive element
- bar shaped
- displacement transducer
- shaped support
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Abstract
The utility model relates to a magnet displacement sensor, which is used for measuring the displacement of a non-contact magnet, which includes a plurality of magnet sensitive elements, a strip-shaped support piece and a detection circuit; each magnet sensitive element is fixedly arranged on the strip-shaped support piece, and is arranged at a certain interval to form a evenly distributed linear array, and the interval ranges from 1 mm to 20 mm; an input end of the detection circuit is connected with each magnet sensitive element to detect the output state of each magnet sensitive element in the magnetic field acting range when the magnet moves in the direction parallel to the strip direction of the strip-shaped support piece; and a communication interface is arranged at an output end of the detection circuit. The magnet displacement sensor can realize automatic intelligent measurement, and has the advantages of simple structure and low cost.
Description
Technical field
The utility model relates to sensor technical field; Be particularly related to a kind of magnet displacement transducer of linear array formula; This magnet displacement transducer is applicable to the monitoring of soil displacement of Geotechnical Engineering, measures like the sedimentation or the horizontal shift of the soil body, also can be used for the monitoring of liquid level.
Background technology
The magnetic displacement meter has measured point and the complete non-contacting characteristics of sensor device, and for example the electromagnetic type sedimentometer in ground monitoring industry is used for the magnetostrictive displacement meter of level gauging etc.
The electromagnetic type sedimentometer is to be inserted in one or according to a plurality of magnet rings of certain pitch arrangement at the plastic material of special use or with the sedimentation pipe outside of non-magnet material processing; Place sensor device in the sedimentation pipe; This sensor device is to have the magnetic induction probe to connect plain conductor that has rule or the flexible steel ruler of being with lead; When magnetic induction is popped one's head near the magnet ring position; The acousto-optic indication is sent by the induction of magnetic induction probe and through the indicator that lead is transferred to the aperture in the magnetic field that magnet ring produces; This moment, the position of the magnetic induction probe distance sedimentation pipe mouth of pipe obtained promptly to have obtained the current location of tested magnet ring through rule, repeated identical operations according to certain time interval, thereby the change in location that can obtain tested magnet ring obtains the vertical displacement Changing Pattern of magnet ring.The complete noncontact of flexible steel ruler of tested magnet ring and magnetic probe that has rule or band lead, this transducer arrangement configuration is simple, good reliability and being widely adopted.But; The magnetic induction probe of this sensor device only has a magnet-sensitive element; Can only sense " having " and " nothing " two kinds of magnetic field states when in the electromagnetic type sedimentometer, using, the position of its magnet ring is judged by the operator fully, and whole operation must be accomplished by manual work; Can't realize automatic measurement, therefore being difficult to obtain continuous process delta data has also improved cost of labor.In addition, this sensor device only can be used for the vertically electromagnetic type sedimentometer of installation, and only limits to measure vertical displacement.
The magnetostrictive displacement meter is accurately realized the measurement to the actual displacement value of measured point in the absolute position of detected activity magnet ring through the contactless observation and control technology of sensor device; Its sensor device is that to produce the flexible mangneto torsional wave that forms of magnetoelasticity through the mangneto waveguide filament be the sensor device of communication media; For guaranteeing the magnetic of mangneto waveguide filament rotating shaft; Need to adopt special material and somewhat expensive mangneto waveguide filament; The assembly technology of magneto strictive sensor is very complicated in addition, and these factors must cause the manufacturing cost of sensor device high, are unfavorable in engineering practice, carrying out large tracts of land and promote.
The utility model content
The utility model exists to the existing sensors device can't realize automatic measurement; Be difficult to obtain continuous delta data; And only limit to measure vertical displacement, and cost high etc. engineering technology problem, a kind of magnet displacement transducer that is used to measure non-contacting magnet displacement is provided; This magnet displacement transducer can be realized the automated intelligent measurement, and has the advantage of simple in structure and low in cost.
The technical scheme of the utility model is following:
A kind of magnet displacement transducer; Be used to measure the displacement of non-contacting magnet; It is characterized in that; Comprise several magnet-sensitive elements, bar shaped support member and testing circuit, said each magnet-sensitive element is fixedly installed on the bar shaped support member and along the bar shaped direction and forms an equally distributed linear array according to certain pitch arrangement, and said spacing is 1～20 millimeter; The input end of said testing circuit links to each other with each magnet-sensitive element when the bar shaped direction that is parallel to the bar shaped support member moves, to detect the output state that is in each magnet-sensitive element in the magnetic field range at magnet, and the output terminal of said testing circuit is provided with communication interface.
Said magnet-sensitive element is a reed switch.
Said magnet-sensitive element is a Hall switch.
Said bar shaped support member is the printed circuit board (PCB) of bar shaped, and said each magnet-sensitive element is welded on the said printed circuit board (PCB), and said testing circuit is integrated on the said printed circuit board (PCB).
Said testing circuit comprises scrambler and CPU, and the input end of said scrambler links to each other with each magnet-sensitive element, and the output terminal of said scrambler links to each other with CPU, and said CPU is provided with communication interface.
Said spacing is 1～10 millimeter.
The bar length of said bar shaped support member is 2 meters.
The technique effect of the utility model is following:
The magnet displacement transducer that the utility model relates to; Comprise several magnet-sensitive elements, bar shaped support member and testing circuit; Each magnet-sensitive element is fixedly installed on the bar shaped support member and along the bar shaped direction and forms an equally distributed linear array according to certain pitch arrangement; Do not receiving the time marquis of the action of a magnetic field, the output state of all magnet-sensitive elements all is in closed condition, when magnet moves along the bar shaped direction that is parallel to the bar shaped support member; Promptly when magnet when the magnet-sensitive element of lining up linear array moves; The magnet-sensitive element that is in the magnets magnetic fields reach will produce response, and the output state that produces the magnet-sensitive element of response will change, and promptly magnets magnetic fields will be responded to and produce and export testing circuit to by one or more magnet-sensitive element; Testing circuit detects the output state of each magnet-sensitive element, just can obtain the position at magnet place.Because magnet-sensitive element is arranged according to prior known rule distribution, constant spacing, so the output state of magnet-sensitive element just can reflect the actual position of magnet.This magnet displacement transducer simple in structure; Solve the existing sensors device and can only sense the problem of " having " and " nothing " two kinds of magnetic field states and essential artificial complete operation, can realize that automated intelligent measures, can obtain continuous process delta data; Need not manually-operated; Reduced cost of labor, and, measured so be applicable to two relative displacements between object as long as magnet moves the displacement that just can obtain magnet along the bar shaped direction that is parallel to the bar shaped support member; Like vertical displacement, horizontal shift etc., solved the existing sensors device and can only measure the problem of vertical displacement.
Magnet-sensitive element adopts reed switch, and several reed switchs form reed switch arrays, have advantage simple in structure, with low cost.
Magnet-sensitive element adopts Hall switch, and several Hall switch form a Hall switch array, has that response speed is fast, measurement resolution is high, the advantage of long service life.
The bar shaped support member is designed to the printed circuit board (PCB) of bar shaped, each magnet-sensitive element is welded on this printed circuit board (PCB), and testing circuit is integrated on this printed circuit board (PCB).The status information of each magnet-sensitive element makes that through being arranged on the output state that testing circuit on the printed circuit board (PCB) detects each magnet-sensitive element the magnet displacement transducer integrated level of the utility model is high, has improved its operational efficiency.
Description of drawings
Fig. 1 is the structural representation of the utility model magnet displacement transducer.
Fig. 2 is the fundamental diagram of the utility model magnet displacement transducer.
Fig. 3 is the preferred structure synoptic diagram of the utility model magnet displacement transducer.
Each label is listed as follows among the figure:
The 1-magnet-sensitive element; 2-bar shaped support member; The 3-magnet; The 4-printed circuit board (PCB).
Embodiment
Below in conjunction with accompanying drawing the utility model is described.
The utility model discloses a kind of magnet displacement transducer; Its structural representation is as shown in Figure 1; Comprise several magnet-sensitive elements 1, bar shaped support member 2 and testing circuit, each magnet-sensitive element 1 is fixedly installed on the bar shaped support member 2 and along the bar shaped direction and forms an equally distributed linear array according to certain pitch arrangement, for improving the resolving power of magnet displacement transducer; This spacing is arranged between 1～20 millimeter usually; Preferably be set to 1～10 millimeter or 2～5 millimeters, the input end of testing circuit links to each other with each magnet-sensitive element 1, and the output terminal of testing circuit is provided with communication interface.To the two states characteristics of the intrinsic switch of magnet-sensitive element, magnet-sensitive element 1 can adopt reed switch, also can adopt Hall switch.When adopting reed switch, form reed switch arrays; When adopting Hall switch, form a Hall switch array.
The principle of work of the magnet displacement transducer of the utility model is as shown in Figure 2; This magnet displacement transducer and magnet 3 cooperatings; Magnet-sensitive element 1 is when responding to the action of a magnetic field that produces less than magnet 3, and the output state of magnet-sensitive element 1 is in closed condition, when magnet 3 moves along the bar shaped direction that is parallel to bar shaped support member 2; The magnet-sensitive element 1 that is in the magnet 3 the action of a magnetic field scopes will produce response, and the output state of triggering magnet-sensitive element 1 changes.In the action of a magnetic field scope of magnet 3, will change by the state of one or more magnet-sensitive elements 1; The output state of all magnet-sensitive elements 1 all exports testing circuit to; Testing circuit detects the output state of each magnet-sensitive element 1, just can obtain the position at magnet 3 places.
Fig. 3 is the preferred structure synoptic diagram of the utility model magnet displacement transducer.This magnet displacement transducer is designed to the bar shaped support member printed circuit board (PCB) 4 of bar shaped; Each magnet-sensitive element 1 is welded on according to fixing spacing on the printed circuit board (PCB) 4 of this bar shaped and forms an equally distributed linear array along the bar shaped direction of the printed circuit board (PCB) 4 of bar shaped; Form a sensor that detects magnet 3 positions; This constant spacing can be set to 1～10 millimeter, and the bar length of printed circuit board (PCB) 4 can be 0.5 meter, 1 meter, 2 meters; Testing circuit is integrated on the said printed circuit board (PCB) 4; Testing circuit comprises scrambler and CPU; The input end of scrambler links to each other with each magnet-sensitive element 1; The output terminal of scrambler links to each other with CPU, when the number of magnet-sensitive element often exceeds the scrambler input interface, can adopt a plurality of scramblers, and CPU is provided with communication interface and power interface.For testing circuit provides power supply, the magnet displacement transducer begins to carry out the work of magnet displacement measurement behind the power interface access external power.
When magnet 3 when the direction that is parallel to printed circuit board 4 moves; Its magnetic field will be responded to and produce output by one or more magnet-sensitive element 1; The state of each magneto sensor 1 will change and for example be unlocked; The status information of each magneto sensor 1 is handled to detect the output state of each magnet-sensitive element 1 by CPU after encoder encodes, just can obtain the position of magnet 3 with respect to printed circuit board 4.Outputing to signal bus through communication interface such as RS485 port at last supplies data acquisition equipment to gather and record.
The magnet displacement transducer of the utility model is provided with relevant informations such as address, sensor sequence number; This magnet displacement transducer has the function of Intelligent Measurement and communication; And can realize communication with specific communications protocol and external network through communication interface; A plurality of such magnet displacement transducers can be arranged in the consolidated network; A plurality of sensors are realized the physics differentiation through Address Recognition, and promptly every magnet displacement transducer all has a unique physical address, use a cable can transmit the cascade of many sensors of signal realization of many magnet displacement transducers.This magnet displacement transducer has changed the operating position that the existing sensors device can only be used for detecting " having " and the single magneto sensor of " nothing " two states; Magnet-sensitive element is made up use and carries out specific setting; Itself and magnet cooperating; And utilize testing circuit to detect the state of each magnet-sensitive element; Keep contactless state between magnet displacement transducer and tested magnet; Be applicable to two relative displacements measurements between object, after multi-form sealed package, can measure the relative displacement of various ground and structure through the mobile realization that detects the magnet ring that is inserted in the sedimentation pipe outside; Like displacement measurement, also can accomplish monitoring with tested magnet (being arranged on the buoyancy aid) cooperating in the packaged back of magnet displacement transducer to liquid level to the angle of inclination of the horizontal shift measurement of the measurement of the sedimentation deformation of the soil body, the soil body and the soil body.
Should be pointed out that the above embodiment can make those skilled in the art more fully understand the invention, but do not limit the present invention in any way creation.Therefore; Although this instructions has carried out detailed explanation with reference to accompanying drawing and embodiment to the invention,, those skilled in the art are to be understood that; Still can make amendment or be equal to replacement the invention; In a word, all do not break away from the technical scheme and the improvement thereof of the spirit and the scope of the invention, and it all should be encompassed in the middle of the protection domain of the invention patent.
Claims (7)
1. magnet displacement transducer; Be used to measure the displacement of non-contacting magnet; It is characterized in that; Comprise several magnet-sensitive elements, bar shaped support member and testing circuit, said each magnet-sensitive element is fixedly installed on the bar shaped support member and along the bar shaped direction and forms an equally distributed linear array according to certain pitch arrangement, and said spacing is 1～20 millimeter; The input end of said testing circuit links to each other with each magnet-sensitive element when the bar shaped direction that is parallel to the bar shaped support member moves, to detect the output state that is in each magnet-sensitive element in the magnetic field range at magnet, and the output terminal of said testing circuit is provided with communication interface.
2. magnet displacement transducer according to claim 1 is characterized in that, said magnet-sensitive element is a reed switch.
3. magnet displacement transducer according to claim 1 is characterized in that, said magnet-sensitive element is a Hall switch.
4. according to the described magnet displacement transducer of one of claim 1 to 3; It is characterized in that; Said bar shaped support member is the printed circuit board (PCB) of bar shaped, and said each magnet-sensitive element is welded on the said printed circuit board (PCB), and said testing circuit is integrated on the said printed circuit board (PCB).
5. magnet displacement transducer according to claim 4; It is characterized in that said testing circuit comprises scrambler and CPU, the input end of said scrambler links to each other with each magnet-sensitive element; The output terminal of said scrambler links to each other with CPU, and said CPU is provided with communication interface.
6. magnet displacement transducer according to claim 1 is characterized in that, said spacing is 1～10 millimeter.
7. magnet displacement transducer according to claim 1 is characterized in that, the bar length of said bar shaped support member is 2 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205466673U CN202372135U (en) | 2011-12-23 | 2011-12-23 | Magnet displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205466673U CN202372135U (en) | 2011-12-23 | 2011-12-23 | Magnet displacement sensor |
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| Publication Number | Publication Date |
|---|---|
| CN202372135U true CN202372135U (en) | 2012-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205466673U Expired - Lifetime CN202372135U (en) | 2011-12-23 | 2011-12-23 | Magnet displacement sensor |
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| CN (1) | CN202372135U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519349A (en) * | 2011-12-23 | 2012-06-27 | 基康仪器(北京)有限公司 | Magnet displacement sensor |
| CN102878916A (en) * | 2012-08-30 | 2013-01-16 | 杨会峰 | Device and method for measuring long stroke displacement based on Hall effect |
| CN103878761A (en) * | 2012-12-24 | 2014-06-25 | 李木 | Multi-track robot capable of positioning via magnetic fields and control method of multi-track robot |
| CN103878760A (en) * | 2012-12-24 | 2014-06-25 | 李木 | Single-track robot capable of positioning via magnetic field and control method of multi-track robot |
| CN103968918A (en) * | 2013-01-25 | 2014-08-06 | 江苏多维科技有限公司 | Digital liquid level sensor |
| CN104697428A (en) * | 2015-03-11 | 2015-06-10 | 武汉静磁栅机电制造有限公司 | Linear displacement detection device with high precision based on magnetic induction sensor |
| WO2020125584A1 (en) * | 2018-12-18 | 2020-06-25 | 深圳市万普拉斯科技有限公司 | Multi-step switch, and electronic apparatus |
| CN111380449A (en) * | 2020-04-17 | 2020-07-07 | 中铁隧道局集团有限公司 | Hall effect-based shield machine long-stroke displacement measuring device and measuring method |
| CN115597477A (en) * | 2022-10-17 | 2023-01-13 | 郑州轻工业大学（Cn） | Single-field scanning device and method for magnetic grid ruler |
| CN116804546A (en) * | 2023-08-22 | 2023-09-26 | 天津市北洋水运水利勘察设计研究院有限公司 | Magnetic induction type resistor grid layered displacement monitoring method and system |
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2011
- 2011-12-23 CN CN2011205466673U patent/CN202372135U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519349A (en) * | 2011-12-23 | 2012-06-27 | 基康仪器(北京)有限公司 | Magnet displacement sensor |
| CN102878916A (en) * | 2012-08-30 | 2013-01-16 | 杨会峰 | Device and method for measuring long stroke displacement based on Hall effect |
| CN102878916B (en) * | 2012-08-30 | 2015-01-21 | 杨会峰 | Device and method for measuring long stroke displacement based on Hall effect |
| CN103878761A (en) * | 2012-12-24 | 2014-06-25 | 李木 | Multi-track robot capable of positioning via magnetic fields and control method of multi-track robot |
| CN103878760A (en) * | 2012-12-24 | 2014-06-25 | 李木 | Single-track robot capable of positioning via magnetic field and control method of multi-track robot |
| CN103878760B (en) * | 2012-12-24 | 2016-06-08 | 李木 | A kind of single-rail robot utilizing Magnetic oriented and control method thereof |
| CN103968918A (en) * | 2013-01-25 | 2014-08-06 | 江苏多维科技有限公司 | Digital liquid level sensor |
| US11035716B2 (en) | 2013-01-25 | 2021-06-15 | MultiDimension Technology Co., Ltd. | Digital liquid-level sensor having at least one tunneling magnetoresistance switch |
| CN104697428B (en) * | 2015-03-11 | 2017-05-17 | 武汉静磁栅机电制造有限公司 | Linear displacement detection device with high precision based on magnetic induction sensor |
| CN104697428A (en) * | 2015-03-11 | 2015-06-10 | 武汉静磁栅机电制造有限公司 | Linear displacement detection device with high precision based on magnetic induction sensor |
| WO2020125584A1 (en) * | 2018-12-18 | 2020-06-25 | 深圳市万普拉斯科技有限公司 | Multi-step switch, and electronic apparatus |
| CN111380449A (en) * | 2020-04-17 | 2020-07-07 | 中铁隧道局集团有限公司 | Hall effect-based shield machine long-stroke displacement measuring device and measuring method |
| CN115597477A (en) * | 2022-10-17 | 2023-01-13 | 郑州轻工业大学（Cn） | Single-field scanning device and method for magnetic grid ruler |
| CN115597477B (en) * | 2022-10-17 | 2023-06-16 | 郑州轻工业大学 | Single-field scanning device and scanning method for magnetic grating ruler |
| CN116804546A (en) * | 2023-08-22 | 2023-09-26 | 天津市北洋水运水利勘察设计研究院有限公司 | Magnetic induction type resistor grid layered displacement monitoring method and system |
| CN116804546B (en) * | 2023-08-22 | 2023-11-10 | 天津市北洋水运水利勘察设计研究院有限公司 | Magnetic induction type resistor grid layered displacement monitoring method and system |
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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: JIKANG INSTRUMENT CO., LTD. Free format text: FORMER NAME: JIKANG INSTRUMENT(BEIJING) CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 102401, 3, Binhe West Street, Triumph Street, Beijing, Fangshan District, Liangxiang Patentee after: CHINA GEOKON INSTRUMENTS CO., LTD. Address before: 102401, 3, Binhe West Street, Triumph Street, Beijing, Fangshan District, Liangxiang Patentee before: Jikang Instrument(Beijing) Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |