CN1114047A - Weight type charge level detector and method - Google Patents
Weight type charge level detector and method Download PDFInfo
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- CN1114047A CN1114047A CN 94112201 CN94112201A CN1114047A CN 1114047 A CN1114047 A CN 1114047A CN 94112201 CN94112201 CN 94112201 CN 94112201 A CN94112201 A CN 94112201A CN 1114047 A CN1114047 A CN 1114047A
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- charge level
- timer
- photoelectric encoder
- minute
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Abstract
The control portion adopts the single-chip microcomputer to control and sensing portion uses photoelectric coder as sensing element. It uses the actual measured time in the preceding measurement as basis, the different pulse number delivered for detecting different charge levels by the photoelectric coder installed on the output shaft of the reducer, is operated by micro computer to determine the interval of the next detecting time. The time interval of detecting is varied with the variation of charge level. When the charge level is high, the detecting time interval is short to avoid overflow and when the charge level is low, the detecting time interval is long to avoid frequent detection.
Description
The invention belongs to charge level detector and method.
At present, survey survey in the raw material material level in storage tank, particularly factories such as the ironmaking in metallurgy industry, sintering, coking raw material in storage ore deposit groove, the coal blending groove at the storehouse material level, the widespread usage Weight type charge level is surveyed.But existing various Weight type charge level detector, as the clear 51-97468 of Jap.P. " surveying (Sounding) method ", used detector each time interval of measuring in detection process is constant (generally setting with the time relay).
Adopt this device to survey 20 meters dark storage tanks, each time interval of measuring is about 3～4 minutes.Such time interval is in low material level fashion at storage tank and dislikes too short, and it is oversize then to seem when storage tank is in high charge level, and wayward charging particularly causes the raw material posthumous title to go out when high charge level easily.
The purpose of this invention is to provide a kind of Weight type charge level detector and method, its each minute can change with the variation of raw material at the storehouse material level at interval, minute is long at interval when hanging down material level, during high charge level, minute is short at interval, the time interval that has overcome each mensuration is constant shortcoming, thereby controls charging effectively.The technical solution used in the present invention is that its control part application single chip microcomputer carries out Based Intelligent Control, and the real time of once measuring before it is a foundation, carries out computing by microcomputer, and its result is as the parameter in the time interval of measuring next time.Its detecting means is used photoelectric encoder as sensing element, is installed in the reductor axle head, rotates synchronously with the deceleration arbor, and the pulse signal of photoelectric encoder output is corresponding with the physical location of measurement weight in storage tank like this, is difficult for producing error.Because in the time of different material level practical measurement is not wait, therefore also be different at interval by the preceding practical measurement time for next minute, thereby realized the purpose that minute changes at the storehouse material level with reality at interval according to the computing gained.
The applied device of the present invention is made up of control part and detecting means.The core of control part is eight single chip microcomputers (Fig. 1) of any series, by controller (1), counter (2), timer (3), memory 1(4), multiplier (5), memory 2(6), timer (7), setting apparatus (8), memory 3(9) composition such as, the control detecting means, detecting means (Fig. 2) is at shell (19) inner bottom part motor (10) to be installed, drive speed reducer (13), winding drum (15) is installed in speed reducer output shaft 2(14) on, wire rope (18) is wrapped on the winding drum, measurement weight (17) has been hung in the wire rope lower end, be contained in the steel wire rope tension detection device (16) of outer casing bottom winding drum below, speed reducer output shaft 1(12) connects around property shaft coupling (11), be fixed with photoelectric encoder (24) on it, it is supported by photoelectric encoder support (25), crossing torque detector (20) is installed on the reducer shell, cross moment of torsion detector switch (22), limit switch (23) is contained on the reductor wall, and the two and photoelectric encoder cover on and be loaded in the inner cover (21) of reductor on property shaft coupling one sidewall.Measuring initially, storer 2(6) numerical value is zero in, controller (1) sends action command, the positive rotaring signal of control part output motor, the rotation of motor (10) positive dirction, also positive dirction rotation of reductor (13), be installed in photoelectric encoder (24) rotation synchronously on property shaft coupling (11), the pulse of output positive dirction is carried out accumulated counts to control part counter (2), and timer (3) picks up counting simultaneously; Speed reducer output shaft 2(14) the positive dirction rotation also drives the rotation of winding drum (15) positive dirction, the measurement weight (17) that will be wrapped in the wire rope (18) on the winding drum (15) and be installed in the wire rope tail end puts down gradually, running into charge level until the measurement weight is held, steel wire rope tension reduces, the variation that tension detector (16) perception goes out steel wire rope tension, signal is delivered to control part, control part sends cancels the positive rotaring signal of motor, output motor reverses signal, the contrary direction rotation of motor (10), make winding drum (15) also do retrograde rotation, rope hoisting drives the measurement weight and leaves charge level, gets back to initial position until measuring weight, controller (1) sends and stops to measure action command, the left alone without help commentaries on classics of motor (10).The reverse of motor also drives photoelectric encoder (24) retrograde rotation by reductor, the output reverse pulse, carry out subtraction to counter (2), until reducing to zero, timer (3) stop timing, to the interior numerical value of control part timer (3) be at this moment: t1=2L ÷ v(t1 is the practical measurement time, L is an investigation depth, v is a speed of detection), this numerical value is put into storer 1(4), with setting in the prior setting apparatus (8), be placed on storer 3(9) in the constant C value advance multiplying in multiplier (5) lining, gained is t=t1 * C as a result, be the time interval of measuring next time, this numerical value be placed on storer 2(6) in, more regularly through timer (7).Timing one arrives, and controller (1) sends the mensuration action command once more, proceeds to measure next time, goes round and begins again, and every mensuration once all has a new time interval.The c value that setting apparatus (8) is set can be selected in the limit minute interval when high charge level and low material level according to the detection process requirement.
To 3 L in dark 20 meters the storagetank
a=3 meters, L
b=10 meters, L
c=17 meters mensuration (Fig. 3), establish V=17 rice/minute, C=6 then obtains the resultant different time interval of different depth respectively.
t
a=t
1* C=2la ÷ V * C=2 * 3 ÷, 17 * 6=2.1 branch
t
o=t
1* C=2lb ÷ V * C=2 * 10 ÷, 17 * 6=7.05 branch
t
c=t
1* C=2lc ÷ V * C=2 * 17 ÷, 17 * 6=12 branch
Can find out that thus more near the storagetank bottom time, minute is long more at interval, during more near the storagetank top, minute is short more at interval.
Adopted the present invention, determine the required different minutes of different material levels at interval by the microcomputer computing, realize Based Intelligent Control, promptly minute is short at interval when high charge level, minute is long at interval when hanging down material level, thereby prevents to measure at the high charge level flash with when hanging down material level in the fill process frequent effectively.
Drawings and Examples:
Fig. 1 control part block diagram of the present invention
1, controller 2, counter 3, timer 4, memory 15, multiplier 6, memory 27, timer 8, setting apparatus
9, memory 3
Fig. 2 sensor construction synoptic diagram of the present invention
10, motor 11, around property shaft coupling 12, speed reducer output shaft 1 13, reductor 14, speed reducer output shaft 2 15, winding drum 16, steel wire rope tension detection device 17, measure weight 18, wire rope 19, shell 20, cross torque detector 21, inner can 22, cross moment of torsion detector switch 23, limit switch 24, photoelectric encoder 25, photoelectric encoder support
The sketch that Fig. 3 the present invention does to measure
15, winding drum 17, measurement weight 18, wire rope 19, shell 26, storagetank
Embodiment:
Charge level detector, adopt 8751 single chip microcomputers, formation is by controller, counter, timer, memory 1, multiplier, memory 2, timer, the control part that memory (3) is formed, control detecting means, detecting means is by the planet-gear speed reducer of a 0.37kw motor-driven speed ratio i=87, the winding drum of diameter phi 0.3m is contained on the speed reducer output shaft, and weight has been hung in the steel cable lower end of twining on the winding drum, and the steel cable of hanging weight passes through tension detector, another axle head of reductor is fixed with the photoelectric encoder of 500 of revolution output pulses, the torque detector excessively of microswitch formula, crossing moment of torsion detector switch and limit switch is contained on the reductor wall.With this charge level detector one holding bin is surveyed, holding bin is the garden tubular, 6 meters of diameters, dark 10 meters, 283 meters of computed volumes
3On the holding bin top one feed arrangement is arranged, its charging rate V1=0.16 rice/minute, charge level detector survey travelling speed be V=17 rice/minute, in the design least limit minute is limited at interval, be 1.5 minutes, detection process required when low material level per 10 minutes to measure once stop charging when material level is higher than 9.7 meters.
Be below one group under these conditions, material level from zero when being higher than 9.7 meters detection event:
At first determine the constant C value:
The t minute is t at interval
1The practical measurement time
But l barrel reality work loading height v detection speed
l
0Before charge level height after once measuring
t＝t
1×c t
1＝2l÷v
c＝t×v/2l c＝10×17/2×10＝8.5
1, minute at interval
T=2(l-l
0)/v * c=2 * (10-0)/17 * 85=10 minute
Bed depth l
1=charging rate v
1* minute is t at interval
l
1=0.16 meter/minute * 10 minutes=1.6 meters
2, t=2 * (10-1.6)/17 * 8.5=8.4 minute
l
2=1.6+0.16 * 8.4=2.95 rice
3, t=2 * (10-2.95)/17 * 8.5=7.05 minute
l
3=2.95+0.16 * 7.05=4.08 rice
4, t=2 * (10-4.08)/17 * 8.5=5.92 minute
l
4=4.08+0.16 * 5.92=5.03 rice
5, t=2 * (10-5.03)/17 * 8.5=4.97 minute
l
5=5.03+0.16 * 4.97=5.83 rice
6, t=2 * (10-5.83)/17 * 8.5=4.17 minute
l
6=5.83+0.16 * 4.17=6.5 rice
7, t=2 * (10-6.5)/17 * 8.5=3.5 minute
l
7=6.5+0.16 * 3.5=7.06 rice
8, t=2 * (10-7.06)/17 * 8.5=2.94 minute
l
8=7.06+0.16 * 2.94=7.53 rice
9, t=2 * (10-7.53)/17 * 8.5=2.5 minute
l
9=7.53+0.16 * 2.5=7.93 rice
10, t=2 * (10-7.93)/17 * 8.5=2.07 minute
l
10=7.93+0.16 * 2.07=8.26 rice
11, t=2 * (10-8.26)/17 * 8.5=1.74 minute
l
11=8.26+0.16 * 1.74=8.54 rice
12, t=2 * (10-8.54)/17 * 8.5=1.46 minute
l
12=8.54+0.16 * 1.5=8.78 rice
(1.46＜1.5 minutes by the calculating in 1.5 minutes at interval of least limit minute)
13, l
13=8.78+0.16 * 1.5=9.02 rice
14, l
14=9.02+0.16 * 1.5=9.26 rice
15, l
15=9.26+0.16 * 1.5=9.50 rice
16, l
16=9.50+0.16 * 1.5=9.74 rice stop charging
This holding bin is surveyed 16 times altogether, and the holding bin charging is filled.
Claims (2)
1, a kind of Weight type charge level detector and method, its sniffer is made up of control part and detecting means, detecting means is by motor (10), deceleration machine (13), steel wire rope tension detection device (16), cross torque detector (20), winding drum (15), wire rope (18), measure weight compositions such as (17), it is characterized in that control part adopts single chip microcomputer, by controller (1), counter (2), timer (3), multiplier (5), timer (7), setting apparatus (8), reservoir (4,6, formation such as 9), sensing element in the detecting means adopts photoelectric encoder (24), in the mensuration process, the pulse of photoelectric encoder (24) output is counted in counter (2), timing in timer (3), and in multiplier (5), carry out multiplying with the setting value in setting apparatus (8) in advance, the gained result regularly, obtains next minute at interval in timer (7).
2, Weight type charge level detector according to claim 1 and method is characterized in that photoelectric encoder (24) is fixed on and speed reducer output shaft 1(12) be connected on property shaft coupling (11), support by photoelectric encoder support (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94112201 CN1114047A (en) | 1994-06-15 | 1994-06-15 | Weight type charge level detector and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94112201 CN1114047A (en) | 1994-06-15 | 1994-06-15 | Weight type charge level detector and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1114047A true CN1114047A (en) | 1995-12-27 |
Family
ID=5035995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94112201 Pending CN1114047A (en) | 1994-06-15 | 1994-06-15 | Weight type charge level detector and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1114047A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100547363C (en) * | 2007-01-30 | 2009-10-07 | 重庆耐德科技发展有限公司 | Soft pot fluid level measuring instrument and measuring method |
| CN102419197A (en) * | 2011-12-16 | 2012-04-18 | 铜陵浩岩节能科技有限公司 | Level measuring device of liquid layered substance |
| CN104614040A (en) * | 2015-02-03 | 2015-05-13 | 北京城建亚泰建设集团有限公司 | Material detection device and method |
| CN105043863A (en) * | 2014-12-26 | 2015-11-11 | 高铁检测仪器（东莞）有限公司 | Semi-automatic point-marking extensometer |
| CN105091978A (en) * | 2014-05-23 | 2015-11-25 | 神华集团有限责任公司 | A material-detecting type material level detection method and system |
| CN105333919A (en) * | 2015-12-08 | 2016-02-17 | 大连华锐重工集团股份有限公司 | Steel chisel inclined inserting type heavy material level meter of industrial furnace |
| CN109827631A (en) * | 2019-04-03 | 2019-05-31 | 西安艾贝尔科技发展有限公司 | A kind of Weight type intelligence material level measuring method and system |
-
1994
- 1994-06-15 CN CN 94112201 patent/CN1114047A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100547363C (en) * | 2007-01-30 | 2009-10-07 | 重庆耐德科技发展有限公司 | Soft pot fluid level measuring instrument and measuring method |
| CN102419197A (en) * | 2011-12-16 | 2012-04-18 | 铜陵浩岩节能科技有限公司 | Level measuring device of liquid layered substance |
| CN105091978A (en) * | 2014-05-23 | 2015-11-25 | 神华集团有限责任公司 | A material-detecting type material level detection method and system |
| CN105091978B (en) * | 2014-05-23 | 2019-03-15 | 神华集团有限责任公司 | A kind of spy material formula material-height exploring method and system |
| CN105043863A (en) * | 2014-12-26 | 2015-11-11 | 高铁检测仪器（东莞）有限公司 | Semi-automatic point-marking extensometer |
| CN105043863B (en) * | 2014-12-26 | 2018-04-10 | 高铁检测仪器（东莞）有限公司 | Semi-automatic punctuate extensometer |
| CN104614040A (en) * | 2015-02-03 | 2015-05-13 | 北京城建亚泰建设集团有限公司 | Material detection device and method |
| CN105333919A (en) * | 2015-12-08 | 2016-02-17 | 大连华锐重工集团股份有限公司 | Steel chisel inclined inserting type heavy material level meter of industrial furnace |
| CN109827631A (en) * | 2019-04-03 | 2019-05-31 | 西安艾贝尔科技发展有限公司 | A kind of Weight type intelligence material level measuring method and system |
| CN109827631B (en) * | 2019-04-03 | 2021-01-08 | 西安艾贝尔科技发展有限公司 | Weight type intelligent material level measuring method and system |
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