CN107179151A - Belt tension tester - Google Patents
Belt tension tester Download PDFInfo
- Publication number
- CN107179151A CN107179151A CN201610136338.9A CN201610136338A CN107179151A CN 107179151 A CN107179151 A CN 107179151A CN 201610136338 A CN201610136338 A CN 201610136338A CN 107179151 A CN107179151 A CN 107179151A
- Authority
- CN
- China
- Prior art keywords
- chip microcomputer
- belt tension
- bandwidth
- output end
- comparator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000001514 detection method Methods 0.000 claims abstract description 23
- 238000012360 testing method Methods 0.000 claims abstract description 17
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 14
- 239000000523 sample Substances 0.000 claims description 3
- 230000003321 amplification Effects 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000009514 concussion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
- G01L5/042—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands by measuring vibrational characteristics of the flexible member
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/25—Measuring force or stress, in general using wave or particle radiation, e.g. X-rays, microwaves, neutrons
- G01L1/255—Measuring force or stress, in general using wave or particle radiation, e.g. X-rays, microwaves, neutrons using acoustic waves, or acoustic emission
Abstract
The invention discloses a kind of belt tension tester, including：Detect termination, housing, test system and liquid crystal display；The test system includes amplifying circuit, bandwidth-limited circuit, comparator and single-chip microcomputer；The detection termination connection housing, the test system are fixed on enclosure interior；The detection termination connects the input of amplifying circuit by data wire；The output end connection bandwidth-limited circuit of the amplifying circuit；The bandwidth-limited circuit output end connects comparator；The output end connection single-chip microcomputer of the comparator；The output end connection liquid crystal display of the single-chip microcomputer.The present invention effectively overcomes interference of the ambient external noise to testing result, has ensured that the Detection results of belt tension are highly accurate.
Description
Technical field
The present invention relates to tester technical field, it particularly relates to a kind of belt tension tester, the tension value for detecting belt during automobile engine is assembled.
Background technology
With the development of science and technology, China strides forward whole people's auto age at a high speed.Therefore, requirement of the people to automotive quality also more and more higher.During assembling automobile, the size of adjusting tensioning force of belt enables the engine to the acquisition optimum transfer efficiency in operation process extremely important.If belt tension is too small, transfer rate can be caused low and belt slippage.And if belt tension it is excessive, if the meeting of belt wear and tear quickly, cause service life to shorten and add the resistance of engine, cause driving to be short of power.Therefore, detection and regulation during engine assembly to belt tension is extremely important.Belt tension tester its operation principle on existing market is to measure air pulsation frequency produced by belt vibrations by detecting head, is converted by the vibration frequency and obtains the SEEM values of belt.The problem of this method of testing is present is can not to exclude the noise jamming in external environment condition, when in detection process, external environment condition produces noise suddenly, then necessarily causes the data of detection inaccurate.How to overcome this problem is that those skilled in the art need the direction of research idea.
The content of the invention
To solve the above problems, the invention provides a kind of belt tension tester.
The concrete scheme that it is used is as follows：
A kind of belt tension tester, including：Detect termination, housing, test system and liquid crystal display；The test system includes amplifying circuit, bandwidth-limited circuit, comparator and single-chip microcomputer.The detection termination connection housing, the test system are fixed on enclosure interior；The detection termination connects the input of amplifying circuit by data wire；The output end connection bandwidth-limited circuit of the amplifying circuit；The bandwidth-limited circuit output end connects comparator；The output end connection single-chip microcomputer of the comparator；The output end connection liquid crystal display of the single-chip microcomputer.
By using this technical scheme：When belt dither, detection termination is suspended from the air concussion produced by belt top, sensing belt vibration, and generates corresponding analog signal；Amplifying circuit receives the analog signal from detection end and amplified；Bandwidth-limited circuit receives the analog signal of the amplification and filters removal noise signal therein；Comparator reception filters out the analog signal of noise signal and the standard signal with being previously written is compared, analyzes calculating through single-chip microcomputer, tension value and cycle numerical value as obtained by LCDs shows detection.
Preferably, in above-mentioned belt tension tester：The detection termination can use microphone sonic probe；The bandwidth-limited circuit is composed in series by a low pass filter and a high-pass filter；The amplifying circuit uses TL-022C integrated amplifiers or TL-060C integrated amplifiers.
It may further be preferable that above-mentioned belt tension tester also includes light sensor and LED background lights；The light sensor is fixed on housing outer surface；The LED background lights are installed on liquid crystal display bottom plate；The light sensor is connected with single-chip microcomputer by data wire, senses external environment condition brightness and feeds back to single-chip microcomputer；Single-chip microcomputer connection LED background lights, work or shut-off according to the feedback control LED background lights of light sensor.
By using technical scheme：When ambient brightness is less than threshold values, light sensor sends feedback signal to single-chip microcomputer, and single-chip microcomputer controls LED background lights opening according to the signal, and there is provided the illumination of liquid crystal display.And when environment temperature is higher than threshold values, light sensor is in normally off without output feedback signal, single-chip microcomputer control LED background lights.Hereby it is achieved that flexibly using to LED background lights.Avoid LED background lights from being in normally open in the sufficient place of illumination, save power consumption.
Compared with prior art, the present invention is simple in construction, be easily achieved.Interference of the ambient external noise to testing result effectively is overcome, has ensured that the Detection results of belt tension are highly accurate.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention 1；
Fig. 2 is the structural representation of test system in the embodiment of the present invention 1；
Fig. 3 is the circuit structure diagram of bandwidth-limited circuit in the embodiment of the present invention 1.
Each part and the corresponding relation of reference are as follows in above-mentioned accompanying drawing：
1st, termination is detected；2nd, housing；3rd, test system；4th, liquid crystal display；5th, light sensor；6th, LED background lights；31st, amplifying circuit；32nd, bandwidth-limited circuit；33rd, comparator；34th, single-chip microcomputer.
Embodiment
Embodiments of the invention 1 as shown in Figure 1：
A kind of belt tension tester, including：Detect termination 1, housing 2, test system 3, liquid crystal display 4, light sensor 5 and LED background lights 6.Wherein, the detection termination 1 is connected to the inside that housing 2 is fixed on the head of housing 2, the test system 3.The light sensor 5 is fixed on the outer surface of housing 2.The LED background lights 6 are installed on the bottom plate of liquid crystal display 35.Light sensor 5 and LED background lights 6 all connect the test system 3. in housing 2 by data wire
As shown in Figure 2：The test system 3 includes amplifying circuit 31, bandwidth-limited circuit 32, comparator 33 and single-chip microcomputer 34.Wherein：The detection termination 1 is connected to the input of amplifying circuit 31 by data wire；The output end connection bandwidth-limited circuit 32 of the amplifying circuit 31；The output end of bandwidth-limited circuit 32 connects comparator 33；The comparator 33 connects the input of single-chip microcomputer 34；The single-chip microcomputer 34 connects liquid crystal display 35.The light sensor 4 is connected with single-chip microcomputer 34 by data wire, senses external environment condition brightness and signal is fed back into single-chip microcomputer 34；The connection LED of single-chip microcomputer 34 background lights 5.Wherein, the detection termination 1 uses microphone sonic probe.As shown in Figure 3：The bandwidth-limited circuit 32 is composed in series by a low pass filter and a high-pass filter.The amplifying circuit 31 uses TL-022C integrated amplifiers or TL-060C integrated amplifiers.
In practice, its course of work is as follows：
After staff takes out belt tension tester at belt tension detection scene, light sensor 5 detects the ambient brightness of surrounding first.When light sensor 5 detect ambient brightness less than threshold values, its feedback signal is sent to single-chip microcomputer 34, control LED background lights 6 to open by single-chip microcomputer 34, be that liquid crystal display 4 provides illumination with LED background lights 6.Conversely, and detect when environment temperature is higher than threshold values, the non-output signal of light sensor 5, the control of single-chip microcomputer 34 LED background lights 6 are in normally off.Belt tension detection formally starts, when belt dither, and detection termination 1 is suspended from the air concussion produced by belt top, sensing belt vibration by staff, and generates corresponding analog signal；Amplifying circuit 31 receives the analog signal and by its power amplification；Bandwidth-limited circuit 32 receives the analog signal after amplification and filters removal noise signal therein；The reception of comparator 33 filters out the analog signal of noise signal and the standard signal with being previously written is compared and sent to single-chip microcomputer 34.Single-chip microcomputer 34 is analyzed according to comparative result and calculated, tension value and cycle numerical value as obtained by LCDs 4 shows detection.
It is described above; only specific embodiment of the invention, but protection scope of the present invention is not limited thereto, and any those skilled in the art is in technical scope disclosed by the invention; the change or replacement that can be readily occurred in, should all be included within the scope of the present invention.Protection scope of the present invention is defined by the protection domain of claims.
Claims (5)
1. a kind of belt tension tester, it is characterised in that including：Detect termination（1）, housing（2）, test system（3）And liquid crystal display（4）；The test system（3）Including amplifying circuit（31）, bandwidth-limited circuit（32）, comparator（33）And single-chip microcomputer（34）；The detection termination（1）Connect housing（2）, the test system（3）It is fixed on housing（2）It is internal；The detection termination（1）Amplifying circuit is connected by data wire（31）Input；The amplifying circuit（31）Output end connection bandwidth-limited circuit（32）；The bandwidth-limited circuit（32）Output end connects comparator（33）；The comparator（33）Output end connection single-chip microcomputer（34）；The single-chip microcomputer（34）Output end connection liquid crystal display（4）.
2. a kind of belt tension tester as claimed in claim 1, it is characterised in that：The detection termination（1）For microphone sonic probe.
3. a kind of belt tension tester as claimed in claim 1, it is characterised in that：The bandwidth-limited circuit（32）It is composed in series by a low pass filter and a high-pass filter.
4. a kind of belt tension tester as claimed in claim 1, it is characterised in that：The amplifying circuit（31）Using TL-022C integrated amplifiers or TL-060C integrated amplifiers.
5. a kind of belt tension tester as claimed in claim 1, it is characterised in that：Also include light sensor（5）With LED background lights（6）；The light sensor（5）It is fixed on housing（2）Outer surface；The LED background lights（6）It is installed on liquid crystal display（4）Bottom plate on；The light sensor（5）Pass through data wire and single-chip microcomputer（34）Connection, sensing external environment condition brightness simultaneously feed back to single-chip microcomputer（34）；The single-chip microcomputer（34）Connect LED background lights（5）, according to light sensor（4）Feedback control LED background lights（5）Work or shut-off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610136338.9A CN107179151A (en) | 2016-03-11 | 2016-03-11 | Belt tension tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610136338.9A CN107179151A (en) | 2016-03-11 | 2016-03-11 | Belt tension tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107179151A true CN107179151A (en) | 2017-09-19 |
Family
ID=59830606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610136338.9A Pending CN107179151A (en) | 2016-03-11 | 2016-03-11 | Belt tension tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107179151A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748022A (en) * | 2017-09-30 | 2018-03-02 | 华中科技大学 | A kind of flexible membrane strain measuring method based on frequency detecting |
| CN110426121A (en) * | 2019-09-13 | 2019-11-08 | 顺德职业技术学院 | A kind of motor or engine abnormal noise detection device and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200986481Y (en) * | 2006-12-22 | 2007-12-05 | 天津市圣威科技发展有限公司 | Belt tension tester |
| CN202350966U (en) * | 2011-11-18 | 2012-07-25 | 广西玉柴机器股份有限公司 | Device for detecting tensioning force of engine belt |
| CN103123287A (en) * | 2011-11-18 | 2013-05-29 | 广西玉柴机器股份有限公司 | Tension detection device of engine belt and detection method utilizing same |
| WO2014021506A1 (en) * | 2012-08-03 | 2014-02-06 | 에스피엑스코리아 주식회사 | Belt tension measuring apparatus |
| CN104870957A (en) * | 2012-10-10 | 2015-08-26 | 博世汽车服务解决方案公司 | A method and system for measuring belt tension |
| CN205620064U (en) * | 2016-03-11 | 2016-10-05 | 贤科茗（上海）精密仪器有限公司 | Belt tension tester |
-
2016
- 2016-03-11 CN CN201610136338.9A patent/CN107179151A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200986481Y (en) * | 2006-12-22 | 2007-12-05 | 天津市圣威科技发展有限公司 | Belt tension tester |
| CN202350966U (en) * | 2011-11-18 | 2012-07-25 | 广西玉柴机器股份有限公司 | Device for detecting tensioning force of engine belt |
| CN103123287A (en) * | 2011-11-18 | 2013-05-29 | 广西玉柴机器股份有限公司 | Tension detection device of engine belt and detection method utilizing same |
| WO2014021506A1 (en) * | 2012-08-03 | 2014-02-06 | 에스피엑스코리아 주식회사 | Belt tension measuring apparatus |
| CN104870957A (en) * | 2012-10-10 | 2015-08-26 | 博世汽车服务解决方案公司 | A method and system for measuring belt tension |
| CN205620064U (en) * | 2016-03-11 | 2016-10-05 | 贤科茗（上海）精密仪器有限公司 | Belt tension tester |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748022A (en) * | 2017-09-30 | 2018-03-02 | 华中科技大学 | A kind of flexible membrane strain measuring method based on frequency detecting |
| CN107748022B (en) * | 2017-09-30 | 2019-09-24 | 华中科技大学 | A kind of flexible membrane strain measuring method based on frequency detecting |
| CN110426121A (en) * | 2019-09-13 | 2019-11-08 | 顺德职业技术学院 | A kind of motor or engine abnormal noise detection device and method |
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