CN105241770A - Magnetic inductive type rebound sensor - Google Patents
Magnetic inductive type rebound sensor Download PDFInfo
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- CN105241770A CN105241770A CN201510649597.7A CN201510649597A CN105241770A CN 105241770 A CN105241770 A CN 105241770A CN 201510649597 A CN201510649597 A CN 201510649597A CN 105241770 A CN105241770 A CN 105241770A
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Abstract
The invention relates to the construction engineering testing technical field, and particularly relates to a magnetic inductive type rebound sensor. The magnetic inductive type rebound sensor provided by the invention includes a shell body comprising an upper shell body and a lower shell body; the upper shell body is provided with a display screen connected with a main board; the main board is provided with a control circuit and an acquisition circuit; the display screen is provided with a thin film; the lower shell body is provided with a pedestal connected with the upper shell body; the pedestal is provided with a sliding block, and the sliding block moves back and forth and is connected with a recoiling hammer; a power supply is connected with a magnetic inductive device and is fixedly mounted on Hall sensors on the sliding block, and the upper part of the Hall sensors is provided with a magnetic strip; the magnetic inductive device also includes a minisize magnetic block fixed on the sliding block, a magnetic inductive circuit comprising a plurality of Hall sensors is arranged right above the minisize magnetic block, and the Hall sensors are a linear array. The magnetic inductive type rebound sensor is realized by means of magnetic induction and is not afraid of disturbance of dust and oil stain, is in a non-contact mode, has no wear, is long in service life, has no need of maintenance at regular intervals, and has the advantages of being convenient, rapid, and accurate in measurement precision.
Description
Technical field
The present invention relates to construction work detection technique field, be specifically related to a kind of magnetic inductive resilience sensor.
Background technology
Digital-display resiliometer of the prior art has installed sensor additional on former mechanical reisilometer, broken away from artificial reading, can realize automatically determining the registration of resilience by being installed at sensor on mechanical reisilometer and electronic circuit thereof.
CN2593183 discloses a kind of mechanical electronic resiliometer, there is the shell of a long tubular, shell is built-in with an elastic stem with weight, elastic stem is connected with slide block, slide block slides on slide bar, corresponding shell there is scale, lateral connection one wing shape pointer between elastic stem and slide block, the shell corresponding with wing shape pointer has scale slot, the moving grid of displacement sensor is fixedly connected with above slide block, its moving grid is corresponding with the cylindrical void on shell, the fixed grid of cylindrical void extenal fixation displacement sensor, moving grid and fixed grid are electrically connected by wire with electronic console.
Disclosed in above-mentioned patent there is irrational mix in mechanical electronic resiliometer, mechanical reisilometer of the prior art: the restoring force being the Instantaneous elastic deformation produced with a Spring driving elastic hammer and by elastic stem attack concrete surface, elastic hammer is made to drive pointer rebound and indicate the distance of rebounding, one of index relevant using rebound value as concrete crushing strength, the distance of namely rebounding and the front elastic hammer of impact, to the ratio of distances constant of elastic stem, percentagewise to estimate concrete compressive strength.It is a kind of equipment for Non-Destructive Testing structure or concrete members compressive strength.After each attack, user needs manually read registration above and record, and therefore, present mechanical reisilometer is all loaded with various sensor.Sensor is in the market almost all photoelectricity tubular type, namely uses " photoelectric tube+grating " scheme, lenticular lenses is arranged on the slide block of mechanical reisilometer, is determined the position of skid by the position responding to grating.Although this sensor is cordless, without wearing and tearing, long service life, but it leans on is photoinduction, its maximum problem is exactly that photoelectric tube is responsive to dust, greasy dirt, in severe environment for use, the photosensitive part of photoelectric tube is polluted, and occurs that induction mistake even responds to inefficacy, cause the false readings of instrument, need manually to maintain this situation, cleaning light path part, when workload is large, even need within several days, just clear up once.Do not allow to ignore on its impact because rasterizer principle determines dust greasy dirt, and reisilometer physical construction determines rasterizer can not seal completely, thorough dust-proof grease proofing, so, this problem is outwardness, be necessary to the time-based maintenance of digital display part, the product of different brands, just maintenance period is different.
Summary of the invention
In order to overcome defect of the prior art, the present invention is theoretical foundation with Hall effect, builds magnetic field environment, the elastic hammer change in displacement of digital-display resiliometer is converted into changes of magnetic field, by Hall element, detects changes of magnetic field, thus drawing elastic hammer shift value, final conversion obtains rebound value.
The present invention is achieved through the following technical solutions: a kind of magnetic inductive resilience sensor, comprise the housing being provided with upper shell and lower house, the end face of described upper shell is provided with the display screen be connected with mainboard, described mainboard is provided with control circuit and Acquisition Circuit, described display screen is provided with film, described lower house is provided with the base be connected with upper shell, described base is provided with the slide block of energy back and forth movement, described slide block is connected with elastic hammer, be provided with power supply in described upper shell, described power supply is connected with magnetic-inductive device.
Further, described magnetic-inductive device comprises the Hall element be packed on slide block, is provided with magnetic stripe directly over described Hall element.
Further, described slide block is pointer.
Further, described magnetic-inductive device comprises the miniature magnetic patch be packed on slide block, is provided with the magnetic conduction circuitry comprising several Hall elements directly over described miniature magnetic patch.
Further, several Hall elements described are matrix arrangement.
Further, described matrix is arranged as linear array.
Magnetic inductive resilience sensor of the present invention compared with prior art, superior effect is: the present invention realizes by magnetic induction, both the interference of dust, greasy dirt be not afraid of, again contactless, without wearing and tearing, long service life, and need not be regular do artificial maintenance, there is convenient, fast, measuring accuracy advantage accurately.
Accompanying drawing explanation
Fig. 1 is the front view of magnetic inductive resilience sensor of the present invention;
Fig. 2 is the attached view of magnetic inductive resilience sensor of the present invention;
Fig. 3 is the structure cut-open view of the embodiment 1 of magnetic inductive resilience sensor of the present invention;
Fig. 4 is the structure cut-open view of the embodiment 2 of magnetic inductive resilience sensor of the present invention.
Reference numeral is as follows:
1-housing, 2-lower house, 3-base, 4-upper shell, 5-mainboard, 6-display screen, 7-slide block, 8-power supply, 9-magnetic stripe, 10-film, 11-magnetic conduction circuitry.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the invention is described in further detail.
Embodiment 1
As Figure 1-3, illustrate and the invention provides a kind of magnetic inductive resilience sensor, comprise the housing 1 being provided with upper shell 4 and lower house 2, the end face of described upper shell 4 is provided with the display screen 6 be connected with mainboard 5, described mainboard 5 is provided with control circuit and Acquisition Circuit, described display screen 6 is provided with film 10, described lower house 2 is provided with the base 3 be connected with upper shell 4, described base 3 is provided with the slide block 7 of energy back and forth movement, described slide block 7 is connected with elastic hammer, power supply 8 is provided with in described upper shell 4, described power supply 8 is connected with magnetic-inductive device, optimization power supply 8 is battery, described magnetic-inductive device comprises the Hall element be packed on slide block 7, magnetic stripe 9 is provided with directly over described Hall element, described slide block 7 is preferably provided with pointer.
By the fixing pointer of slide block 7 installs Hall element in the present embodiment; On the parallel surface of slide block 7 running orbit, namely directly over Hall element, magnetic stripe 9 and circuit board are installed; In reisilometer attack process, Hall element moves with the indicator slide block 7 of mechanical reisilometer, and the magnetic induction signal in Acquisition Circuit continuous acquisition Hall sensor movement process, enters analog to digital converter after signal transacting; Microcontroller is by analog to digital converter Real-time Obtaining sensor signal value; Whole magnetic stripe 9 is for Hall element, and there is different magnetic field intensitys different positions; After the pointer on elastic hammer snaps into the stopping of certain position, the value of Hall element sampling also can be fixed to certain value, pass through control circuit, Hall element can be calculated relative to the particular location of magnetic stripe or title relative displacement, thus current pointer position can be accurately calculated---the displacement of starting point relatively; By controller, shift value is converted to corresponding rebound value.The present invention goes to detect based on the changes of magnetic field on magnetic stripe 9 by a Hall element, and Cleaning Principle and rasterizer detect essential distinction, also can not affect measurement result, therefore can accomplish non-maintaining even if hide by dust greasy dirt.
Embodiment 2
As Fig. 1, shown in 2 and 4, the invention provides a kind of magnetic inductive resilience sensor, comprise the housing 1 being provided with upper shell 4 and lower house 2, the end face of described upper shell 4 is provided with the display screen 6 be connected with mainboard 5, described mainboard 5 is provided with control circuit, described display screen 6 is provided with film 10, described lower house 2 is provided with the base 3 be connected with upper shell 4, described base 3 is provided with the slide block 7 of energy back and forth movement, power supply 8 is provided with in described upper shell 4, described power supply 8 is connected with magnetic-inductive device, described magnetic-inductive device comprises the miniature magnetic patch be packed on slide block 7, the magnetic conduction circuitry 11 comprising several Hall elements is provided with directly over described miniature magnetic patch, several Hall elements described are matrix arrangement, be preferably linear array.In the present embodiment, miniature magnetic patch is arranged on slide block 7, on the parallel surface of slide block 7 running orbit, namely directly over miniature magnetic patch, multiple Hall element is installed, the slide block movement of the random tool reisilometer of miniature magnet, pass through Hall sensor array successively, Hall sensor array is as sensing device, be responsible for detecting magnet positions in real time, after the slide block 7 on elastic hammer snaps into the stopping of certain position, the value that each Hall element samples is all not identical and immobilize, pass through control circuit, the numbering of this Hall element and the relative displacement with magnet can be calculated, thus current pointer position can be accurately calculated---the displacement of starting point relatively, pass through controller, shift value can be converted to corresponding rebound value.Above-mentioned introduction be the difference of mounting means, its principle is all remove induced magnetism signal with Hall sensor array.
The present invention is not limited to above-mentioned embodiment, and when not deviating from flesh and blood of the present invention, any distortion that it may occur to persons skilled in the art that, improvement, replacement all fall into protection scope of the present invention.
Claims (6)
1. a magnetic inductive resilience sensor, comprise the housing (1) being provided with upper shell (4) and lower house (2), the end face of described upper shell (4) is provided with the display screen (6) be connected with mainboard (5), described mainboard (5) is provided with control circuit and Acquisition Circuit, described display screen (6) is provided with film (10), be characterised in that, described lower house (2) is provided with the base (3) be connected with upper shell (4), described base (3) is provided with the slide block (7) of energy back and forth movement, described slide block (7) is connected with elastic hammer, power supply (8) is provided with in described upper shell (4), described power supply (8) is connected with magnetic-inductive device.
2. magnetic inductive resilience sensor according to claim 1, it is characterized in that, described magnetic-inductive device comprises the Hall element be packed on slide block (7), is provided with magnetic stripe (9) directly over described Hall element.
3. magnetic inductive resilience sensor according to claim 2, it is characterized in that, described slide block (7) is provided with pointer.
4. magnetic inductive resilience sensor according to claim 1, it is characterized in that, described magnetic-inductive device comprises the miniature magnetic patch be packed on slide block (7), is provided with the magnetic conduction circuitry (11) comprising several Hall elements directly over described miniature magnetic patch.
5. magnetic inductive resilience sensor according to claim 4, is characterized in that, several Hall elements described are matrix arrangement.
6. magnetic inductive resilience sensor according to claim 5, it is characterized in that, described matrix is arranged as linear array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510649597.7A CN105241770A (en) | 2015-10-09 | 2015-10-09 | Magnetic inductive type rebound sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510649597.7A CN105241770A (en) | 2015-10-09 | 2015-10-09 | Magnetic inductive type rebound sensor |
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| Publication Number | Publication Date |
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| CN105241770A true CN105241770A (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510649597.7A Pending CN105241770A (en) | 2015-10-09 | 2015-10-09 | Magnetic inductive type rebound sensor |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2476808Y (en) * | 2001-04-24 | 2002-02-13 | 中国建筑科学研究院建筑结构研究所 | Resiliometer with electronic value indicater |
| CN202166577U (en) * | 2011-07-18 | 2012-03-14 | 北京智博联科技有限公司 | Wireless digital readout resiliometer |
| CN202582807U (en) * | 2012-03-28 | 2012-12-05 | 北京智博联科技有限公司 | Resiliometer |
| CN103344516A (en) * | 2013-06-17 | 2013-10-09 | 曾汉 | Method for acknowledging rebound value of rebound instrument |
| CN103630458A (en) * | 2013-12-12 | 2014-03-12 | 曾汉 | Rebound value calibration device |
| CN203705281U (en) * | 2013-12-11 | 2014-07-09 | 河北联合大学 | Digital display type concrete rebound instrument |
| CN204964322U (en) * | 2015-10-09 | 2016-01-13 | 北京智博联科技股份有限公司 | Magnetic induction formula resilience sensor |
-
2015
- 2015-10-09 CN CN201510649597.7A patent/CN105241770A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2476808Y (en) * | 2001-04-24 | 2002-02-13 | 中国建筑科学研究院建筑结构研究所 | Resiliometer with electronic value indicater |
| CN202166577U (en) * | 2011-07-18 | 2012-03-14 | 北京智博联科技有限公司 | Wireless digital readout resiliometer |
| CN202582807U (en) * | 2012-03-28 | 2012-12-05 | 北京智博联科技有限公司 | Resiliometer |
| CN103344516A (en) * | 2013-06-17 | 2013-10-09 | 曾汉 | Method for acknowledging rebound value of rebound instrument |
| CN203705281U (en) * | 2013-12-11 | 2014-07-09 | 河北联合大学 | Digital display type concrete rebound instrument |
| CN103630458A (en) * | 2013-12-12 | 2014-03-12 | 曾汉 | Rebound value calibration device |
| CN204964322U (en) * | 2015-10-09 | 2016-01-13 | 北京智博联科技股份有限公司 | Magnetic induction formula resilience sensor |
Non-Patent Citations (1)
| Title |
|---|
| 郝冬妮等: "检测混凝土抗压强度技术的一种新应用及研究", 《工程质量A版》 * |
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Application publication date: 20160113 |
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