CN1190656C - Resilience method concrete compression strength detector and its making method - Google Patents
Resilience method concrete compression strength detector and its making method Download PDFInfo
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- CN1190656C CN1190656C CNB03103652XA CN03103652A CN1190656C CN 1190656 C CN1190656 C CN 1190656C CN B03103652X A CNB03103652X A CN B03103652XA CN 03103652 A CN03103652 A CN 03103652A CN 1190656 C CN1190656 C CN 1190656C
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- vernier
- electronic circuit
- optoelectronic switch
- resilience
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Abstract
The existing concrete compression strength detector with a digital resilience method does not directly detect resilience values and has the problems of high manufacturing technical requirements, difficult control of measuring accuracy, indispensability of first input of striking angles in actual use, etc. The present invention provides a concrete compression strength detector with a resilience method and a manufacturing method thereof, which is characterized in that a resilience value sensing component is arranged between a vernier 5 and a housing 2; the resilience value sensing component is composed of a photoelectric switch and a plane grating 13, wherein the distance between each two seams of the plane grating 13 is known; the plane grating 13 is formed by printing seams on light and thin material. In the process of resilience, a striking drives the vernier to move and makes the photoelectric switch and the plane grating shift relatively; because the distance between each two seams of the plane grating is known, so the number of electron pulses output by the photoelectric switch directly reflects the resilience values. The present invention provides a digital resiliometer, and the digital resiliometer completely complies with relevant technical standards and carries out sampling in a contactless mode.
Description
What technical field the present invention relates to is a kind of rebound method instrument for testing compressive strength of concrete, belongs to the Non-Destructive Testing field of concrete crushing strength.
The background technology concrete crushing strength is an important indicator of construction engineering quality, and it is the widest a kind of method of using in the Non-Destructive Testing concrete crushing strength that rebound method detects concrete crushing strength.It is mechanical type vernier direct-reading reisilometer that the rebound method concrete crushing strength detects widely used for a long time, this reisilometer is to drive elastic hammer and clash into the elastic stem that presses closer at concrete surface with a main spring, concrete surface is subjected to bounce that attack produces to be delivered to elastic hammer again by elastic stem and makes the elastic hammer distance of being rebounded, people's regulation with this snap-off-distance as the indirect metric of concrete crushing strength and be called rebound value (1 rebound value unit=0.75 millimeter).In actual use, the manual read gets the indicated rebound value reading of vernier that is driven by elastic hammer on the reisilometer, its data of manual record draw measured concrete compressive strength according to carrying out after artificial treatment or the input Computer Processing according to the relevant technologies standard logarithmic again.From actual operating position, mechanical type vernier direct-reading reisilometer exists inevitably that artificial reading error is big, each link is easy to generate the human error, data-handling efficiency is low, and to detect data be the leak of distorting by the people easily.For solving the bigger problem of artificial factor influence that mechanical type vernier direct-reading reisilometer in use exists, people have released the digitizing reisilometer.As Chinese patent 01220127.8 disclosed " reisilometer of band electron showing value device ", " avris has two non-contacting sensors that are electrically connected with electron showing value device at least at the vernier of reisilometer." when the elastic hammer resilience, set sensor is immediately to counter delivery time signal, and go out rebound value by a calculated with mathematical model according to the moment signal of each sensor.But this reisilometer be not directly detect rebound value but by certain point on the vernier that detects reisilometer by the moment of each sensor, go out the final rebound value of elastic hammer by calculated with mathematical model again, because the multiple parameter correlations such as horizontal plane angle of time measurement precision, assembling and positioning precision and the reisilometer attack direction of its measuring accuracy and sensor, and the time measurement precision is subject to external shock and spring vibrations harmonic effects, therefore has the manufacturing requirements height, a problem such as measuring accuracy is wayward, actual when the using angle of input attack earlier.
Summary of the invention is at above-mentioned deficiency, and technical matters to be solved by this invention is exactly to propose a kind of contactless rebound method instrument for testing compressive strength of concrete, but it be directly measure rebound value and meet the relevant technologies standard.
Rebound method instrument for testing compressive strength of concrete provided by the invention, the elastic hammer 10 that one center is installed with guide pole 9 is installed in housing 2, be connected by a main spring 8 between elastic hammer front end and housing antetheca, big step before the elastic hammer external diameter has the back little, the vernier guide rod 11 parallel with guide pole is installed in housing wall, vernier 5 is installed on the vernier guide rod, in the slotted hole 19 parallel of pointer face limit on housing of vernier with guide pole, the vernier front end fixes one to the housing center and the reed 12 that turns forward and stretch out, and the reed summit will surpass the major diameter of elastic hammer and not reach the minor diameter of elastic hammer to the deep distance in housing center.Other has one by being installed in the correlation optoelectronic switch on the vernier 5 and being installed in the rebound value sensory package that the transmission seam plane grating 13 of known each nip clearance on the housing 2 constitutes, plane grating 13 is on the plane parallel with guide pole 9 and be on the photo-signal channel of optoelectronic switch, and being sewn on the plane of intersecting with guide pole 9 and intersecting with the light path of optoelectronic switch on the plane grating 13, plane grating is not made Mechanical Contact with optoelectronic switch.
Rebound method instrument for testing compressive strength of concrete provided by the invention, wherein correlation optoelectronic switch 15 is slot type optoelectronic switches.The slot type optoelectronic switch can make the installation of optoelectronic switch simplify.
Rebound method instrument for testing compressive strength of concrete provided by the invention, wherein being sewn on the plane vertical with guide pole 9 of plane grating respectively has a shadow shield before the optical transmitting set of optoelectronic switch and the optical receiving set, have on the shadow shield with grating on the parallel light penetrating slit of seam.
Rebound method instrument for testing compressive strength of concrete provided by the invention, said optoelectronic switch 15 is connected with an electronic circuit board 16 through photosignal line 17, electronic circuit board is installed in the housing 2 electronic circuit cabin 6 outward, electronic circuit cabin housing 7 is installed in outside the housing 2, has access opening 18 between electronic circuit cabin and housing 2 inside.The single card microcomputer system is installed on the electronic circuit board, has comprised photosignal input, counting, calculating, storage, controlling of sampling and data communication interface 14 all circuit in the single card microcomputer system.At this, the single card microcomputer system receives by the photosignal of optoelectronic switch input and to it and handles, carry out exchanges data by data communication interface and control and display device that other establishes again, thereby realize processing such as required control, demonstration or printing, make the product that each parts constituted that is carried by housing 2 become the independently digital sensor part of rebound method instrument for testing compressive strength of concrete.
Rebound method instrument for testing compressive strength of concrete provided by the invention, said connection optoelectronic switch 15 is to flexibly connect line with the photosignal line 17 that electronic circuit board 16 is adopted, as twisted-pair feeder, parallel lines etc., especially flexible print circuit (FPC) connecting line.When optoelectronic switch moves with vernier, adopt to flexibly connect line to guarantee accessible the moving between optoelectronic switch and the electronic circuit board.
Rebound method instrument for testing compressive strength of concrete provided by the invention, the data communication interface of installing on the electronic circuit board 16 14 is serial communication interfaces, on also promptly extraneous and the electronic circuit board single card microcomputer system carry out message exchange signal adopted is the standard asynchronous serial communication protocol, but also can be directly except that the special-purpose resilience indicating value of adapted instrument and all kinds of computer equipments of Asynchronous Serial Interface are arranged, connect as the memory device of desktop computer, notebook computer, palm PC or computer and to use, by the reisilometer displayed record or by the printing of computer equipment displayed record etc.At this, needn't be matching used because used serial communication interface that the sensor of rebound method instrument for testing compressive strength of concrete is become with the resilience indicating value instrument of special use, independently digitized product sensor.
The method for making of rebound method instrument for testing compressive strength of concrete provided by the invention, wherein the making of plane grating 13 is to be base material with frivolous material, and adopts printing process according to certain rules seam to be printed on the base material.The rule here is exactly to determine the rule of each nip clearance.
The method for making of rebound method instrument for testing compressive strength of concrete provided by the invention, wherein when plane grating is plane transmission grating, lighttight striped is imprinted on a translucent sheet with method of printing with lighttight coating and makes, the interval that does not wherein stamp coating between the twice striped is exactly the light penetrating slit of grating.
The method for making of rebound method instrument for testing compressive strength of concrete provided by the invention, on the plane grating by printing one striped and stay the rule at an interval to print light tight striped in an equal widths.This width preferably 1 rebound value length multiple value or etc. score value, the multiple value of said 1 rebound value length or etc. score value can be 1,2 or 1/2,1/3 rebound value or the like.The magnitude relationship of this width also is limited by the response frequency and the printing technology of optoelectronic switch to the degree of accuracy of the detected rebound value of rebound method instrument for testing compressive strength of concrete.The more little then measuring accuracy of this width is high more.
The method for making of rebound method instrument for testing compressive strength of concrete provided by the invention is when printing light tight striped with lighttight coating, is undertaken by the method that each width of fringe equates and each interval width equates.
The method for making of rebound method instrument for testing compressive strength of concrete provided by the invention, the initiating terminal of plane grating 13 has one section to be to be printed on opaque paint entirely, to make when mounted reisilometer in the two ends of back plane grating 13 that reset more the end near optoelectronic switch be initiating terminal, elastic hammer drives the vernier action optoelectronic switch 15 is moved to the other end from initiating terminal with respect to plane grating 13 during the elastic hammer resilience.This section is printed on the initiating terminal of opaque paint entirely, be in order to the rebound value reference point of proofreading and correct reisilometer, by toggle switch group or the different switching combination of short circuit solder joint group that is installed in electronic circuit board 16, but simple realization is to the calibration of sensor resilience reference point.
Rebound method instrument for testing compressive strength of concrete provided by the invention based on traditional mechanical type vernier direct-reading reisilometer, is installed the rebound value sensory package of forming with optoelectronic switch and plane grating in the mode of not making Mechanical Contact between its vernier and housing.In springback process, when elastic hammer drives vernier when the vernier guide rod moves, make between optoelectronic switch and the plane grating and do relative displacement, each seam on the plane grating can make optoelectronic switch do a break-make response and export an electronic impulse.The photosignal that optoelectronic switch is exported is formed with several electronic impulses.Electronic impulse number in the photosignal that optoelectronic switch is exported be exactly between optoelectronic switch and the plane grating relative displacement the number of seam of process.Because the gap length on the grating between each seam is known, so the electronic impulse number that optoelectronic switch is exported has directly reflected the rebound value that vernier is indicated.Single card microcomputer system on the electronic circuit board only needs to count the electronic impulse in the photosignal, and again that the seam number of lighting from benchmark on electronic impulse number and the plane grating that equates with the electronic impulse number is represented rebound value number simply converts, reference point done can obtain rebound value after suitable the calibration.This technical scheme makes the structure of the hardware and software of single card microcomputer system all obtain simplifying, thereby has reduced the cost in electron device and supporting electronic circuit cabin etc.Based on traditional mechanical type vernier direct-reading reisilometer, install the sensor of the rebound method instrument for testing compressive strength of concrete that constitutes behind rebound value sensory package and the electronic circuit board additional, also kept simultaneously the technical feature and the usability of traditional mechanical type vernier direct-reading reisilometer.With the rebound value sensory package that optoelectronic switch and plane grating are formed, its sample mode is discontiguous; And directly displacement is converted into pulse signal, does not more have labile factors such as temperature, humidity drift, time drift.Rebound method instrument for testing compressive strength of concrete provided by the invention provides a kind of and met the relevant technologies standard fully, with the digitizing rebound method instrument for testing compressive strength of concrete of not way of contact sampling.
Description of drawings Fig. 1 is the front view of one embodiment of the invention;
Fig. 2 be among Fig. 1 A-A to cut-open view;
Fig. 3 be among Fig. 1 B-B to cut-open view;
Fig. 4 is 5,11,13,15,16,17 a design sketch among Fig. 3;
Fig. 5 be among Fig. 3 C-C to cut-open view.
The making of specific embodiments plane transmission grating: get a resin sheet and cut out a slice that comprises two rectangular areas, the size one of these two rectangles is 5 millimeters of long 67.5 mm wides, one is 15 millimeters of long 113.5 mm wides, one long limit of last rectangle overlaps with a long limit of back one rectangle fully, it is 7.5 millimeters that two rectangles have the distance between the pair of short edges, and another is 38.5 millimeters to the distance between the minor face.In last rectangle, vertically use the striped of black paint 5 millimeters of wide 0.75 millimeters long in 0.75 millimeter printing, then stamp 10 millimeters of a segment lengths' the black area that is coated with at the more approaching end of two rectangle minor faces with long limit.To be that rib is shaped into L shaped on the limit that overlaps with two rectangles then, and for regarding as from the more approaching end of two rectangle minor faces, L shaped longitudinal edge is limit in order to the mounting plane grating for back one rectangle, and L shaped horizontal edge is that last rectangle is the plane grating part.Shown in Fig. 1,2,3,4,5, in traditional mechanical type vernier direct-reading reisilometer, with bonding method with a slot type optoelectronic switch 15 notches upwards, groove and vernier guide rod 11 be installed in the right side (with elastic stem 1 is the place ahead, and vernier is the top) of vernier 5 abreast.On housing 2 from vernier slotted hole 19 longitudinal centre lines to the right 7.5 millimeters stamp a long access opening of 67.5 millimeters 18 more to the right.Installation one has an electronic circuit board 16 to be installed in the electronic circuit cabin by the electronic circuit cabin 6 that electronic circuit cabin housing 7 constitutes above this access opening 18 outside housing.Single card microcomputer and other electronic components are installed on the electronic circuit board, and the serial communication interface 14 on being installed in electronic circuit cabin housing constitutes the single card microcomputer system.The signal input part of single card microcomputer system connects slot type optoelectronic switch 15 through a flexible print circuit 17 by access opening 18.Electronic circuit cabin housing 7 merges mutually with housing 2 towards the limit of vernier slotted hole 19 and covered the vernier slotted hole and the slotted hole that overlaps with the vernier slotted hole is arranged.The grating part of the plane transmission grating 13 of aforementioned making gained is inserted access opening 18 downwards, the mounting portion is clipped between housing 2 and housing 7 limits, electronic circuit cabin, other has a transparent coversheet 3 to cover outside the vernier slotted hole, installs with screw on every side at the vernier slotted hole.The grating part just in time is in the groove of slot type optoelectronic switch 15, and is vertical with the optical axis of slot type optoelectronic switch, and that proofreaies and correct usefulness is coated with black area (reference point) then forwardly.Be connected with computer or other data processing equipments by null modem cable 4 realizations at serial communication interface 14.When mounted can be on electronic circuit board, one group of toggle switch (or pad) be set in the single card microcomputer system realize desired rebound value datum error calibration by the different switching combination of switch or solder joint is set when measurement verification, maintenance, the replacing device with convenient.
Claims (6)
1, a kind of rebound method instrument for testing compressive strength of concrete, the elastic hammer [10] that the center that is equipped with in housing [2] is installed with guide pole [9], be connected by a main spring [8] between elastic hammer front end and housing antetheca, big step before the elastic hammer external diameter has the back little, the vernier guide rod [11] parallel with guide pole is installed in housing wall, vernier [5] is installed on the vernier guide rod, in the slotted hole [19] parallel of pointer face limit on housing of vernier with guide pole, the vernier front end fixes one to the housing center and the reed [12] that turns forward and stretch out, the reed summit will surpass the major diameter of elastic hammer and not reach the minor diameter of elastic hammer to the deep distance in housing center, it is characterized in that having in addition one by being installed in the correlation optoelectronic switch on the vernier [5] and being installed in the rebound value sensory package that the transmission seam plane grating [13] of known each nip clearance on the housing [2] constitutes, plane grating [13] is on the plane parallel with guide pole [9] and be on the photo-signal channel of optoelectronic switch, and being sewn on the plane of intersecting with guide pole [9] and intersecting with the light path of optoelectronic switch on the plane grating [13].
2, rebound method instrument for testing compressive strength of concrete as claimed in claim 1 is characterized in that said correlation optoelectronic switch is the slot type optoelectronic switch.
3, rebound method instrument for testing compressive strength of concrete as claimed in claim 1 or 2, it is characterized in that said optoelectronic switch [15] is connected with an electronic circuit board [16] through the photosignal line, electronic circuit board is installed in the outer electronic circuit cabin [6] of housing [2], electronic circuit cabin housing [7] is installed in outside the housing [2], electronic circuit cabin and housing [2] have access opening [18] between the inside, the single card microcomputer system is installed on the electronic circuit board, has comprised all circuit of photosignal input, counting, calculating, storage, controlling of sampling and data communication interface [14] in the single card microcomputer system.
4, rebound method instrument for testing compressive strength of concrete as claimed in claim 3 is characterized in that it is serial communication interface that electronic circuit board [16] is gone up the data communication interface of installing [14].
5, rebound method instrument for testing compressive strength of concrete as claimed in claim 3 is characterized in that the photosignal line that said connection optoelectronic switch [15] and electronic circuit board [16] are adopted is to flexibly connect line.
6, rebound method instrument for testing compressive strength of concrete as claimed in claim 3 is characterized in that the said line that flexibly connects is flexible print circuit connecting line [17].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB03103652XA CN1190656C (en) | 2003-02-07 | 2003-02-07 | Resilience method concrete compression strength detector and its making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB03103652XA CN1190656C (en) | 2003-02-07 | 2003-02-07 | Resilience method concrete compression strength detector and its making method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1444029A CN1444029A (en) | 2003-09-24 |
| CN1190656C true CN1190656C (en) | 2005-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB03103652XA Expired - Fee Related CN1190656C (en) | 2003-02-07 | 2003-02-07 | Resilience method concrete compression strength detector and its making method |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293377C (en) * | 2004-11-19 | 2007-01-03 | 舟山市博远科技开发有限公司 | Resiliometer casing |
| CN103353281B (en) * | 2013-07-08 | 2016-08-24 | 济南朗睿检测技术有限公司 | A kind of digital carbonization depth measuring instrument |
| CN103808368A (en) * | 2014-03-10 | 2014-05-21 | 广州展亚土木工程技术有限公司 | Portable reinforced concrete detector |
| CN113008715B (en) * | 2021-04-13 | 2022-11-11 | 上海市市政工程管理咨询有限公司 | Concrete structure hardness detection device |
| CN114034769B (en) * | 2021-11-05 | 2023-07-14 | 金陵科技学院 | Concrete durability test device |
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2003
- 2003-02-07 CN CNB03103652XA patent/CN1190656C/en not_active Expired - Fee Related
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| CN1444029A (en) | 2003-09-24 |
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Granted publication date: 20050223 Termination date: 20220207 |