CN1456868A - Core belt scaler for reducing measuring errors caused by irregular piling up - Google Patents
Core belt scaler for reducing measuring errors caused by irregular piling up Download PDFInfo
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- CN1456868A CN1456868A CN 03119657 CN03119657A CN1456868A CN 1456868 A CN1456868 A CN 1456868A CN 03119657 CN03119657 CN 03119657 CN 03119657 A CN03119657 A CN 03119657A CN 1456868 A CN1456868 A CN 1456868A
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Abstract
The necleon scale consists of isotopic radioactive source, scale frame, ray transducer, electronic circuit speed measuring mechanism and instrument host, of which the ray transducer is composed of a number of ray detection units. At working time, the belt loaded with matters is passed between the isotopic radioactive source and the ray transducer as the ray strength at different belt position to be used to comfirm the matter mass at different position on the belt can be detected by the ray detection unit in the ray transducer. The information of mass distribution at different position on the belt together with the belt speed parameter obtained by the speed measuring mechanism are sent to the instrument host for processing to decrease greatly the measuring error caused by irregular pile up of the matter.
Description
Technical field belt conveyer industry measurement field.
The background technology controlled nucleon operated belt conveyor scale is a kind of material on the belt conveyor to be carried out the industry measurement instrument of continuous measurement, and it has in real time, noncontact, advantage such as stable, reliable, appears at the sixties of eighties of last century, imports China after the reform and opening-up into.The late nineteen eighties in last century has been realized production domesticization, has obtained using widely in industries such as the coal of China, building materials, iron and steel afterwards, and effect is remarkable.This controlled nucleon operated belt conveyor scale adopts a radioactive source and a detector to form detection system, the absorbing state of ray is measured the quality of material by surveying material.When the solid accumulation dimensionally stable, this uclear scale can be measured the flow of material more accurately.
The application scenario of uclear scale varies, measured material also has nothing in common with each other, the accumulation situation of some places material is good, the accumulation situation of some places material is poor, shape does not have rule, and sideslip can take place belt simultaneously, when these situations take place, the actual solid accumulation shape that detection system is surveyed is different with the accumulation shape of detection system timing signal, and deviation will take place the result who measures certainly.Under condition of severe relatively, this deviation can exceed the nominal accuracy that dispatches from the factory of uclear scale usually far away, and the control of production run is caused adverse influence.It is that have even because metering is not inconsistent and causes legal dispute with actual conditions.
Physical basic theories can prove, the material of equal in quality, and when the accumulation shape of material changed, existing uclear scale can't draw identical result, and this conclusion obtained confirmation before more than 30 years.Find that in practice this same material is because the error that the solid accumulation shape difference causes can reach 20%.Therefore when the material deformationization of material was big, existing uclear scale can't accurately measure.
In order to solve the material shape influence of material, people answer materials to form the material shape that the shape device comes the standard material.Expect normally a kind of mechanical framework of shape former, be placed on the upstream of uclear scale, when material passes through former, can be configured as the material on the belt shape of rule, feasible uclear scale subsequently can be measured the quality of material accurately.Former can help uclear scale to improve measuring accuracy, but this method has following defective: at first, when belt deviation, the former belt that can wear and tear; Secondly, the bad adaptability that former changes significantly to material load usually, when the load of material 20% to 100% when changing, former is difficult to operate as normal; Also have the wearing and tearing of former itself also very big.
Summary of the invention the present invention proposes the another kind of irregular method that causes measuring error of solid accumulation that solves.It is to survey the ray power that penetrates material with a radiation transducers linear array.It is a sensor of measuring quality of material, also is the sensor of measuring material material shape.The ray signal that the sensor in different positions unit measures has been represented quality of material and the thickness on the belt of opposite position.The signal of whole unit is carried out overall treatment, just obtained the mass distribution and the height profile of the material on the whole belt section, i.e. the material shape of material.To expect that shape information of same quality information is together in upward processing of instrument host (single-chip microcomputer or microcomputer).Thereby because can discern the accurate distribution of material shape can reduce puzzlement uclear scale decades because of the irregular measuring error of bringing of bank buildup shape, the measuring accuracy of uclear scale is improved a lot, and then can make the application prospect of controlled nucleon operated belt conveyor scale bright more.
Embodiment is that an energy of the present invention reduces the synoptic diagram that causes the uclear scale of measuring error because of solid accumulation is irregular as shown in the figure.(1) is isotope radioactive source device among the figure, and according to the difference of material, it can be caesium (Cs137) radioactive source, cobalt (Co60) radioactive source or americium (Am147) radioactive source, and the activity of radioactive source can be from 0.01GBq to 100GBq.(2) be uclear scale scale frame, it is used for supporting the radioactive source device, and belt and material are passed through after the match from the ray of radioactive source.(3) be the probe unit of ray detector linear array.(4) be radiation transducers.It is made up of a plurality of probe units (3).(5) be electronic circuit.The prime amplifier, high-voltage power circuit and the signal processing circuit that comprise radiation transducers.(6) be the speed monitoring mechanism of belt.(7) be the main frame of uclear scale.Usually adopt PC or single-chip microcomputer.
The load of material is the main foundation of selective emission source apparatus (1) on the character of material and the belt.If carry on the belt be low Z, materials of low density such as tobacco, washing powder the time, adopt low-energy americium radioactive source usually; If transmit on the opposite belt be the materials such as coal, iron ore of high load capacity the time, can according to circumstances adopt high-octane caesium or cobalt radioactive source device.The activity of radioactive source can be selected according to the accuracy requirement of measuring, usually at 0.01GBq between the 100GBq.
Radiation transducers (4) is the core component of uclear scale, and it is made up of a plurality of X-ray detection Xs unit (3).The radioactive source device is all aimed in each X-ray detection X unit, accepts the ray of this probe unit present position, and ray signal is converted into corresponding with it electric signal, and the size of electric signal is directly proportional with the transmitted intensity of probe unit present position.How much the number of the probe unit (3) in the radiation transducers (4) is according to the material shape characteristics determined of thing section on the belt width that will measure and the belt.Belt is narrow more, and the number of needed probe unit is few more; The material shape of material is level and smooth more, variation is more little, and the number of probe unit is few more.Otherwise needed probe unit number is just many more.Generally, the number of the probe unit (3) in the radiation transducers (4) is between 4 to 128.These probe units can be independent ray detectors, also can be the probe units that is coupled to each other.The actuating medium of these probe units is inert gas (helium, neon, argon, krypton, xenons), or based on their mixed gas.Each probe unit all links to each other with independent amplifier.
The signal that electronic circuit (5) is finished radiation transducers amplifies, and transmission provides operating voltage to radiation transducers simultaneously.Prime amplifier in the electronic circuit zooms into the manageable voltage signal of ordinary electronic device to the ultra-weak electronic signal of X-ray detection X unit.The number of the probe unit in the prime amplifier number in the electronic circuit and the radiation transducers is identical.
Belt speed mechanism for monitoring (6) is used to detect the motion conditions of belt.It can be a simple relay contact, also can be a belt speed measuring wheel.If the on-the-spot belt feeder of metering is a constant speed band conveyor, whether this belt speed testing agency (6) only needs the detection band conveyor to work so, be the whether adhesive of relay of the drive motor of band conveyor, at this time this mechanism only needs the relay switch signal that a band photoelectricity is isolated.If on-the-spot belt feeder is constant speed not, at this moment should adopt accurate special-purpose belt speed measuring mechanism.
Main frame (7) is accepted mass distribution and the material shape signal that electronic circuit is caught the material that comes, and the belt speed signal of belt speed mechanism for monitoring (or startup stop signal of constant speed motor), these signals are carried out overall treatment, obtain the load and the flow of material on the belt, and calculate cumulative amount.Main frame also has various statistics and report capability, can show and print various data and information.The main frame that can differentiate the uclear scale of material material shape of the present invention can be a PC, also can be single-chip microcomputer.The demonstration of data can be on screen, also can be on the panel of instrument.
This figure of description of drawings is the synoptic diagram of apparatus of the present invention, and (1) is isotope radioactive source device, and (2) are uclear scale scale frame, (3) be probe unit, (4) are radiation transducers, and (5) are electronic circuit, (6) be the speed monitoring mechanism of belt, (7) are the main frames of uclear scale.
Claims (5)
1, can reduce the controlled nucleon operated belt conveyor scale that causes measuring error because of solid accumulation is irregular, it is characterized in that it is made up of radioactive source device, scale frame, many probe units radiation transducers, electronic circuit, belt speed mechanism for monitoring and main frame.
2, as claims 1 said many probe units radiation transducers, it is characterized in that this radiation transducers by 4 to 128 independently probe unit form, each probe unit can be independent ray detector.
3,, it is characterized in that this radiation transducers is made up of 4 to 128 probe units that are coupled to each other as claims 1 said many probe units radiation transducers.
4, as claims 1 said many probe units radiation transducers, the actuating medium that it is characterized in that this radiation transducers is inert gas (helium, neon, argon, krypton, an xenon), or based on their mixed gas.
5, as claims 1 said many probe units radiation transducers, each probe unit that it is characterized in that this radiation transducers all links to each other with independent amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03119657 CN1456868A (en) | 2003-03-19 | 2003-03-19 | Core belt scaler for reducing measuring errors caused by irregular piling up |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03119657 CN1456868A (en) | 2003-03-19 | 2003-03-19 | Core belt scaler for reducing measuring errors caused by irregular piling up |
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| CN1456868A true CN1456868A (en) | 2003-11-19 |
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| CN 03119657 Pending CN1456868A (en) | 2003-03-19 | 2003-03-19 | Core belt scaler for reducing measuring errors caused by irregular piling up |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051069A (en) * | 2018-01-09 | 2018-05-18 | 北京工业职业技术学院 | The calibration method of X-ray uclear scale and X-ray uclear scale |
| WO2020154854A1 (en) * | 2019-01-28 | 2020-08-06 | 湖北润生食品科技有限公司 | Method for controlling sesames to be uniformly distributed in process of being steamed for nine times and shined for nine times |
-
2003
- 2003-03-19 CN CN 03119657 patent/CN1456868A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051069A (en) * | 2018-01-09 | 2018-05-18 | 北京工业职业技术学院 | The calibration method of X-ray uclear scale and X-ray uclear scale |
| CN108051069B (en) * | 2018-01-09 | 2023-11-21 | 北京工业职业技术学院 | Calibration method of X-ray nucleon balance and X-ray nucleon balance |
| WO2020154854A1 (en) * | 2019-01-28 | 2020-08-06 | 湖北润生食品科技有限公司 | Method for controlling sesames to be uniformly distributed in process of being steamed for nine times and shined for nine times |
| CN113347891A (en) * | 2019-01-28 | 2021-09-03 | 湖北长松食品有限公司 | Method for controlling uniform distribution of sesame seeds in nine-steaming and nine-sun-drying process |
| CN113347891B (en) * | 2019-01-28 | 2023-08-29 | 湖北长松食品有限公司 | Method for controlling uniform distribution of sesame in nine-steaming and nine-airing process |
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