CN101000368A - Optical fibre sensor for on-line measuring lead-acid battery capacity - Google Patents
Optical fibre sensor for on-line measuring lead-acid battery capacity Download PDFInfo
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- CN101000368A CN101000368A CN 200610095382 CN200610095382A CN101000368A CN 101000368 A CN101000368 A CN 101000368A CN 200610095382 CN200610095382 CN 200610095382 CN 200610095382 A CN200610095382 A CN 200610095382A CN 101000368 A CN101000368 A CN 101000368A
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- acid battery
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Abstract
An optical fiber sensor being able to carry out on-line measurement on volume of lead-acid battery is prepared as forming optical fiber probe by incoming and receiving optical fibers, setting two parallel through holes with stages at middle-bottom position on shell, inserting said probe separately into two said holes and positioning said probe vertically, connecting reflector at shell bottom surface and using said reflector to seal one through hole and to hold a gap to anther through hole then injecting reference liquid into sealed through hold.
Description
Technical field
The present invention relates to Fibre Optical Sensor, be specifically related to the Fibre Optical Sensor of on-line measurement lead-acid battery capacity.
Background technology
Along with the widespread use of lead-acid accumulator, how accurately to detect the online detection of the capacity, particularly capacity of lead-acid accumulator, be a key and the difficult problem in the detection range, therefore, the capacity of lead acid battery detecting line sensor of research and design practicality is extremely important.The absorption coefficient of light and the concentration of material, factor such as the optical path length, transmitted light intensity by absorbing medium relevant, and, light is also relevant with the concentration and the temperature of material by the refractive index of medium, energy size variation that receives and the measurement of concetration with electrolytic solution of Practical significance after the reflection of light process electrolytic solution are connected, and the concentration of electrolytic solution (or claiming relative density) has corresponding funtcional relationship with capacity of lead acid battery, thereby just can know the capacity status of accumulator by measuring lead-acid accumulator electrolyte concentration.Existing traditional lead-acid battery manufacturer is when dispatching from the factory, volume test is exactly by using glass density meter offline mode to detect the concentration of electrolyte of lead-acid accumulator or the variation of relative density, thereby converse the capacity of accumulator, but environment and lead-acid accumulator electrolyte inside variation of temperature are bigger to concentration of electrolyte or relative density influence, thereby it is not accurate enough causing traditional capacity measuring method, generally can only under the constant temperature situation, could determine its capacity more exactly, and the main cause that existing traditional measurement method can not accurately be measured is not eliminate the influence of temperature variation to concentration of electrolyte and accumulator capacity, therefore measures inaccurate.
Summary of the invention
Defective at above-mentioned prior art existence, technical matters to be solved by this invention is to provide a kind of can eliminate environment and the influence of lead-acid accumulator electrolyte inside temperature variation to concentration or relative close variation, the Fibre Optical Sensor of the on-line measurement lead-acid battery capacity that measuring accuracy is high automatically.
In order to solve the problems of the technologies described above, according to a technical scheme of the present invention, a kind of Fibre Optical Sensor of on-line measurement lead-acid battery capacity, comprise: shell, fibre-optical probe, wherein, fibre-optical probe is made up of incident optical and reception optical fiber, it is characterized in that: two parallel via holes are arranged in the described shell, there is step at middle part at through hole by following position, described fibre-optical probe inserts respectively in two through holes and by the step of through hole and locatees in vertical direction, connect catoptron at the shell bottom end face, described catoptron with the sealing of one of them through hole and and another through hole between leave the gap, in described sealed hole, be injected with reference to liquid and since with reference to liquid adding, eliminated environment and of the influence of lead-acid accumulator electrolyte inside temperature variation, made measured value more accurate concentration or relative close variation.
According to a preferred version of the Fibre Optical Sensor of on-line measurement lead-acid battery capacity of the present invention, the outer casing bottom end face is the stepped ramp type end face, and catoptron is connected on the low step surface, and forms the gap between the high step surface.
According to another preferred version of the Fibre Optical Sensor of on-line measurement lead-acid battery capacity of the present invention, described gap is 1.5mm～2mm.
According to another preferred version of the Fibre Optical Sensor of on-line measurement lead-acid battery capacity of the present invention, radially fixing between described fibre-optical probe and the shell through corrosion resistant screw.
According to another preferred version of the Fibre Optical Sensor of on-line measurement lead-acid battery capacity of the present invention, described shell upper end is provided with installation head, installation head and shell one.
According to another preferred version of the Fibre Optical Sensor of on-line measurement lead-acid battery capacity of the present invention, described reflecting surface is pottery or glass-mirror.
The beneficial effect of the Fibre Optical Sensor of measurement lead-acid battery capacity of the present invention is, environment and of the influence of lead-acid accumulator electrolyte inside temperature variation have been eliminated to concentration or relative close variation, can well realize the online detection of capacity of lead acid battery, advantage such as this sensor has the measuring accuracy height, is quick on the draw, long service life.Commercial lead acid accumulator electric quantity test, the solution concentration that can apply to automobile lead-acid accumulator electric quantity test, power industry widely tested, the salinity test of seawater, has broad application prospects.
Description of drawings
Below in conjunction with accompanying drawing the present invention is elaborated.
Fig. 1 is the cut-open view of Fibre Optical Sensor of the present invention.
Fig. 2 is a Fibre Optical Sensor front elevation of the present invention.
Fig. 3 is a Fibre Optical Sensor vertical view of the present invention.
Fig. 4 is Fibre Optical Sensor Online Transaction Processing figure of the present invention.
Fig. 5 is the curve of sensor output voltage and time relationship during with the 2A Electro-Static Discharge with Fibre Optical Sensor of the present invention test lead-acid accumulator
Fig. 6 is the curve of sensor output voltage and time relationship during with the static charging of 3.6A with Fibre Optical Sensor of the present invention test lead-acid accumulator
Fig. 7 is the curve of sensor output voltage and time relationship when charging with the 2A discharge with 3.6A respectively with Fibre Optical Sensor of the present invention test lead-acid accumulator
Embodiment
Referring to Fig. 1, Fig. 2 and Fig. 3, the Fibre Optical Sensor of on-line measurement lead-acid battery capacity is by shell 1, fibre- optical probe 2,3, catoptron 4, with reference to liquid 15, installation head 11, corrosion resistant screw 10 constitutes, wherein, fibre- optical probe 2,3 by incident optical 6,8 and receive optical fiber 7,9 form, two parallel via holes 13 are arranged in described shell 1,14, there is step at middle part at through hole by following position, described fibre- optical probe 2,3 insert two through holes 13 respectively, locate in vertical direction in 14 and by the step of through hole, connect catoptron 4 at shell 1 bottom end face, described catoptron 4 with 13 sealings of one of them through hole and and another through hole 14 between leave the gap, in described sealed through hole 13, be injected with reference to liquid 15.
The Fibre Optical Sensor of the described measurement lead-acid battery capacity of present embodiment, shell 1 bottom end face is the stepped ramp type end face, catoptron 4 is connected on the low step surface of shell, and forms gap 12 between the high step surface of shell.Wherein, catoptron 4 can be fixing with shell 1 by etch-proof screw 5, and is perhaps fixing by bonding agent and shell 1.
The Fibre Optical Sensor of the described measurement lead-acid battery capacity of present embodiment, described gap 12 is 1.5mm～2mm.
The Fibre Optical Sensor of the described measurement lead-acid battery capacity of present embodiment, radially fixing between described fibre-optical probe and the shell through corrosion resistant screw 10.
The Fibre Optical Sensor of the described measurement lead-acid battery capacity of present embodiment, described shell 1 upper end is provided with installation head 11, installation head 11 and shell 1 one.
The Fibre Optical Sensor of the described on-line measurement lead-acid battery capacity of present embodiment, described reflecting surface are pottery or glass-mirror.
The Fibre Optical Sensor of on-line measurement lead-acid battery capacity is put into tested lead-acid battery solution, the installation head 11 that shell 1 upper end is provided with is fixed on the battery cell case, incident optical 6,8 is connected with photoelectric conversion device 16 respectively with reception optical fiber 7,9, and photoelectric conversion device 16 connects dedicated tester 17 again; When Fibre Optical Sensor is put into lead-acid battery solution, be full of tested lead-acid battery solution in the intermittence 12 of described fibre-optical probe 2 and catoptron 4, light is through incident optical 6, enter tested lead-acid battery solution, arrive catoptron 4 again, after catoptron 4 reflection, pass through tested lead-acid battery solution once more, enter into and receive optical fiber 7, output to photoelectric conversion device 16 after finishing the propagation of light in tested lead-acid battery solution; Light its output intensity behind process lead-acid battery solution also is subjected to the influence of concentration change except being subjected to Temperature Influence, and output signal is the function of temperature and concentration, described fibre-optical probe 3, light at first passes through incident optical 8, enters with reference to liquid 15, arrives catoptron 4 again, after catoptron 4 total reflections, pass through once more with reference to 16, can select distilled water for use is with reference to liquid, and light its output intensity after process is with reference to liquid only is subjected to Temperature Influence, and output signal is the function of temperature.
Use V respectively
1And V
2Represent the output voltage after the fibre-optical probe process is with reference to liquid and battery liquid and process opto-electronic conversion respectively, the voltage signal V of electrical switching device 16 outputs
1And V
2Be input to tester 17, tester 17 mainly is made up of signal amplification circuit, A/D change-over circuit, Single-chip Controlling and digital parameters display part, and tester 17 can obtain single output signal V after being taken the logarithm simultaneously in two formula both sides after comparing calculation process:
That is:
Wherein:
In the formula: C
20Expression be equivalent to electrolyte temperature constant in the time of 20 ℃ the concentration of electrolytic solution, K
1, K
2The photoelectric conversion factors of representing the photoelectric conversion device 16 that fibre- optical probe 2,3 connects respectively, C
20The concentration of electrolytic solution when being illustrated in temperature and being 20 ℃, τ is a specific constant.ρ
20Density (the unit: g/L) of electrolytic solution when the expression temperature is 20 ℃; Y
A, M
ARepresent H respectively
2SO
4Mole fraction and molecular weight; Y
B, M
BRepresent PbSO respectively
4Mole fraction and molecular weight.
So, the output signal voltage V that Fibre Optical Sensor of the present invention passes through after the signal Processing at last is only relevant with the variation of the electrolytic solution of the lead-acid battery concentration (concentration when being equivalent to 20 ℃) 20 ℃ the time, and it is temperature independent, like this by sensor construction design and signal processing method of the present invention, the electric signal of immesurable capacity of lead acid battery conversion of signals for surveying can be eliminated the influence of temperature variation to battery capacity measuring simultaneously.Again because the concentration of electrolyte or the relative density of lead-acid accumulator have corresponding funtcional relationship with capacity, as long as just know the situation of change of accumulator capacity, output signal voltage V can be set up corresponding funtcional relationship with the capacity of lead acid battery with practical significance like this so know the concentration change situation.
With Guangan, Sichuan can be high the power supply Science and Technology Ltd. model of producing be that the startup lead-acid accumulator of 6-QA-36 is a measurand, obtain lead-acid accumulator at curve such as Fig. 5, Fig. 6 and Fig. 7 static and sensor output voltage and time relationship when dynamically discharging and recharging by test, from the survey curve as can be seen, the variation tendency fundamental sum theoretical derivation of sensor output voltage signal matches, that is: in discharge process because the minimizing of concentration of electrolyte, the loss of light reduces, thereby sensor output voltage diminishes; Because it is concentration of electrolyte increases gradually, and the loss of light increases, big in charging process thereby sensor output voltage becomes, so the described Fibre Optical Sensor of this invention can be realized the detection to capacity of lead acid battery.
Claims (6)
1, a kind of Fibre Optical Sensor of on-line measurement lead-acid battery capacity, comprise: shell (1), fibre-optical probe (2,3), wherein, fibre-optical probe (2,3) by incident optical (6,8) and receive optical fiber (7,9) form, it is characterized in that: two parallel via holes (13 are arranged in the described shell (1), 14), there is step at middle part at through hole by following position, described fibre-optical probe (2,3) insert two through holes (13 respectively, 14) locate in vertical direction in and by the step of through hole, connect catoptron (4) at shell (1) bottom end face, described catoptron (4) with one of them through hole (13) sealing and and another through hole (14) between leave gap (12), in described sealed through hole (13), be injected with reference to liquid (15).
2, the Fibre Optical Sensor of on-line measurement lead-acid battery capacity according to claim 1, it is characterized in that: shell (1) bottom end face is the stepped ramp type end face, catoptron (4) is connected on the low step surface of shell, and forms gap (12) between the high step surface of shell.
3, the Fibre Optical Sensor of on-line measurement lead-acid battery capacity according to claim 1 and 2 is characterized in that: described gap (12) are 1.5mm～2mm.
4, the Fibre Optical Sensor of on-line measurement lead-acid battery capacity according to claim 3 is characterized in that: radially fixing through corrosion resistant screw (10) between described fibre-optical probe (2,3) and the shell (1).
5, the Fibre Optical Sensor of on-line measurement lead-acid battery capacity according to claim 3, it is characterized in that: described shell (1) upper end is provided with installation head (11), the diameter of installation head (11) is bigger than the diameter at other positions of shell (1), and installation head (11) is formed one-piece construction with shell (1).
6, the Fibre Optical Sensor of on-line measurement lead-acid battery capacity according to claim 3 is characterized in that: described catoptron (4) is pottery or glass mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100953826A CN100460889C (en) | 2006-12-30 | 2006-12-30 | Optical fibre sensor for on-line measuring lead-acid battery capacity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100953826A CN100460889C (en) | 2006-12-30 | 2006-12-30 | Optical fibre sensor for on-line measuring lead-acid battery capacity |
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| CN101000368A true CN101000368A (en) | 2007-07-18 |
| CN100460889C CN100460889C (en) | 2009-02-11 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963653A (en) * | 2010-09-17 | 2011-02-02 | 重庆大学 | Method and device for detecting spare capacity of lead-acid accumulator by optical fiber ATR sensor |
| CN102410850A (en) * | 2010-09-21 | 2012-04-11 | 王建伟 | Reflective optical fiber sensor device |
| CN102621078A (en) * | 2012-04-05 | 2012-08-01 | 清华大学深圳研究生院 | Method and device for detecting charging state of vanadium redox battery |
| CN111351643A (en) * | 2020-03-31 | 2020-06-30 | 武汉天马微电子有限公司 | Optical test equipment applied to display panel |
| CN112881918A (en) * | 2021-03-09 | 2021-06-01 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Lead-acid battery SOC estimation method |
| CN117906683A (en) * | 2024-03-19 | 2024-04-19 | 齐鲁工业大学(山东省科学院) | Sensor for measuring double parameters of temperature and electrolyte density of storage battery and measuring method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11325827A (en) * | 1998-05-20 | 1999-11-26 | Ishikawajima Harima Heavy Ind Co Ltd | Droplet detecting method and droplet detecting sensor |
| US5949219A (en) * | 1998-07-24 | 1999-09-07 | The United States Of America As Represented By The United States Department Of Energy | Optical state-of-charge monitor for batteries |
| CN2819232Y (en) * | 2005-02-06 | 2006-09-20 | 重庆工学院 | Plumbous acid accumulator capacity sensor for vehicle |
| CN100412510C (en) * | 2006-06-30 | 2008-08-20 | 哈尔滨工业大学 | Fiber grating sensor for simultaneously measuring displacement and pressure |
| CN200993672Y (en) * | 2006-12-30 | 2007-12-19 | 重庆工学院 | Optical fiber-sensor for on-line measuring lead-acid battery capacity |
-
2006
- 2006-12-30 CN CNB2006100953826A patent/CN100460889C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963653A (en) * | 2010-09-17 | 2011-02-02 | 重庆大学 | Method and device for detecting spare capacity of lead-acid accumulator by optical fiber ATR sensor |
| CN101963653B (en) * | 2010-09-17 | 2012-10-03 | 重庆大学 | Method and device for detecting spare capacity of lead-acid accumulator by optical fiber ATR sensor |
| CN102410850A (en) * | 2010-09-21 | 2012-04-11 | 王建伟 | Reflective optical fiber sensor device |
| CN102621078A (en) * | 2012-04-05 | 2012-08-01 | 清华大学深圳研究生院 | Method and device for detecting charging state of vanadium redox battery |
| CN102621078B (en) * | 2012-04-05 | 2014-03-05 | 清华大学深圳研究生院 | Method and device for detecting charging state of vanadium redox battery |
| CN111351643A (en) * | 2020-03-31 | 2020-06-30 | 武汉天马微电子有限公司 | Optical test equipment applied to display panel |
| CN112881918A (en) * | 2021-03-09 | 2021-06-01 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Lead-acid battery SOC estimation method |
| CN117906683A (en) * | 2024-03-19 | 2024-04-19 | 齐鲁工业大学(山东省科学院) | Sensor for measuring double parameters of temperature and electrolyte density of storage battery and measuring method thereof |
| CN117906683B (en) * | 2024-03-19 | 2024-05-28 | 齐鲁工业大学(山东省科学院) | Sensor for measuring double parameters of temperature and electrolyte density of storage battery and measuring method thereof |
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|---|---|
| CN100460889C (en) | 2009-02-11 |
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