CN202025205U - Online intelligent silo material level monitoring system - Google Patents
Online intelligent silo material level monitoring system Download PDFInfo
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- CN202025205U CN202025205U CN 201120055247 CN201120055247U CN202025205U CN 202025205 U CN202025205 U CN 202025205U CN 201120055247 CN201120055247 CN 201120055247 CN 201120055247 U CN201120055247 U CN 201120055247U CN 202025205 U CN202025205 U CN 202025205U
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- supporting leg
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Abstract
The utility model relates to an online intelligent silo material level monitoring system, which comprises a silo with a plurality of supporting legs. A supporting leg bearing monitoring unit is arranged on at least one supporting leg and comprises a micrometric displacement detection module. The micrometric displacement detection module is connected with a signal amplification and analogy-to-digital (A/D) conversion module. The signal amplification and A/D conversion module is connected with a control system through a wireless transmission module and/or a wired interface. Compared with the prior art, the micrometric displacement detection module can detect the axial micro deformation of the silo supporting leg during bearing and converts the axial micro deformation into electric signals for output, then signal amplification and A/D conversion are conducted, the control system conducts calculation to obtain the load data of the supporting leg, the load of a silo is calculated according to the load data of the supporting leg and the material level of the silo is monitored through the load of the silo. Therefore, good linearity and detection accuracy can be guaranteed and a reasonable-cost effective method is provided for the online monitoring of the material level of the silo.
Description
Technical field
The utility model relates to a kind of on-line monitoring system, is meant bin-level on-line intelligence monitoring system especially.
Background technology
Feed bin is the storage device of industrial processes indispensabilities such as engineering construction, chemical industry, metallurgy, food.Feed bin is various informative, and feed bin mostly is closed system in engineering is used, and the field condition complexity, has increased difficulty also for the detection of material level.As: concrete stirs the detection problem of industry cement silo material level, fails so far to be solved well, causes very big difficulty aspect control of material.Many mixing plants all took place, and carrying in the process of cement toward cement silo wind-force, feed bin were exploded, and caused cement to fly ease everywhere, caused severe environmental pollution first, second caused the serious waste of material.It is various to make a general survey of present domestic and international market charge level detector table, as: infrared ray charge level detector, ultrasound wave charge level detector, microwave charge level detector, Weight type charge level detector, blocking rotary type material level extreme position pick-up unit etc.But these detectors usually are subjected to the constraint of all factors in using in the environment at the scene, as the influence of factors such as dust, density of material variations, change in dielectric constant in the storehouse, to the accuracy of detection influence seriously, even can't operate as normal, and instrument costs an arm and a leg.
CN1963415A discloses a kind of bin-level intelligent detecting instrument, belong to automatic detection range, it comprises ratio power takeoff and digital intelligent Displaying Meter two parts, the ratio power takeoff is made up of upper and lower brace summer, LOAD CELLS, locking device and proportion force device, upper and lower brace summer is installed on the feed bin supporting leg, one brace summer links to each other with LOAD CELLS by locking device, and LOAD CELLS links to each other with proportion force device one end, and the proportion force device other end links to each other with another brace summer; The digital intelligent Displaying Meter comprises single-chip microcomputer, storer, signal amplification circuit, power supply, A/D converter, communication interface, display, keyboard and traffic pilot, power supply links to each other with keyboard, traffic pilot respectively, single-chip microcomputer links to each other with display, storer, communication interface, A/D converter, keyboard respectively, and traffic pilot links to each other with A/D converter, signal amplification circuit respectively.This patented claim adopts power takeoff to detect, and can't guarantee the good detection precision, and error is bigger.
The utility model content
Fundamental purpose of the present utility model is to overcome the shortcoming of prior art, and bin-level on-line intelligence monitoring system is provided, and has good detection precision and lower use cost.
The utility model adopts following technical scheme:
Bin-level on-line intelligence monitoring system, comprise feed bin with some supporting legs, on at least one supporting leg, be provided with supporting leg load-bearing monitoring means, this supporting leg load-bearing monitoring means comprises the micrometric displacement detection module, this micrometric displacement detection module is connected to signal and amplifies and the A/D modular converter, and this signal amplifies and the A/D modular converter is connected to control system by wireless transport module and/or wireline interface.
Preferably, on all supporting legs of feed bin, be equipped with described supporting leg load-bearing monitoring means.Because the distribution of feed bin powder weight on each supporting leg is not uniform, and be subjected to powder and pile up all multifactor influences such as centre-of gravity shift, the influence of supporting leg settlement of foundation, horizontal windage, temperature, earthquake, if only on a supporting leg, detect, above-mentioned all multifactor, will have a strong impact on the accuracy of testing result.Preferably take on each supporting leg (feed bin that has is that three supporting legs support, indivedual feed bin also have six legs to support) that supporting leg load-bearing monitoring means is set for this reason, going up to greatest extent like this, reduced above-mentioned all multifactor influences.The actual powder weight of feed bin be every leg load capacity and.And require low place for those accuracy of detection, and also can only supporting leg load-bearing monitoring means be set on a supporting leg to monitor, but at this moment accuracy of detection is influenced by above-mentioned various factors, must the periodic calibrating correction guarantee that error is within the specific limits.
Preferably, be connected with temperature compensation module on described signal amplification and the A/D modular converter.
Preferably, be connected with display screen on described signal amplification and the A/D modular converter.
Further, described micrometric displacement detection module comprises a diplopore beam sensor, one end of this diplopore beam sensor is fixedly mounted on the sensor platform that is welded on the supporting leg, on a detection platform, this detection platform is welded on the supporting leg other end of this diplopore beam sensor by a displacement detecting bolt contact of responding to micrometric displacement; The upper and lower faces of this diplopore beam sensor diplopore respectively posts two foil resistance foil gauges, and forms the full-bridge testing circuit, and its output is connected to described signal and amplifies and the A/D modular converter.The front portion of described displacement detecting bolt is provided with a stainless steel ball, and described detection platform is provided with a stainless steel gasket, and the middle part of this stainless steel gasket offers an aperture, and this stainless steel ball contact is on this aperture.
Perhaps, described micrometric displacement detection module comprises that one is installed in the eddy displacement sensor on the supporting leg, and a sensor background module is pointed in the test side of this eddy displacement sensor, and this sensor background module is weldingly fixed on the supporting leg.
Perhaps, described micrometric displacement detection module adopts capacitance gage, inductance sensor, hall displacement transducer or photoelectric displacement sensor.
Preferably, be connected with the Zigbee partial node on described signal amplification and the A/D modular converter, described control system is connected with the Zigbee wireless transport module, and this signal amplifies and the A/D modular converter is connected with control system with this Zigbee wireless transport module by this Zigbee partial node.
By above-mentioned to description of the present utility model as can be known, compared with prior art, the axial miniature deformation that bin-level on-line intelligence monitoring system of the present utility model produces when adopting the micrometric displacement detection module to detect the feed bin support bearing also is converted into electric signal output, carry out signal amplification and A/D conversion then, calculate the supporting leg load data by control system, calculate the feed bin loading according to the supporting leg load data, monitor bin-level by the feed bin loading, dust in the receiver bin not, density of material changes, the influence of factors such as change in dielectric constant, can guarantee favorable linearity and accuracy of detection, for the on-line monitoring of bin-level provides a kind of cost reasonable, effective mode.
Description of drawings
Fig. 1 is the circuit block diagram of the utility model embodiment.
Fig. 2 adopts the structural representation of the micrometric displacement detection module of diplopore beam sensor for the utility model;
Fig. 3 adopts the structural representation of the micrometric displacement detection module of eddy displacement sensor for the utility model.
Embodiment
Below by embodiment the utility model is described in detail.
With reference to Fig. 1, bin-level on-line intelligence monitoring system of the present utility model, comprise feed bin with some supporting legs, on all feed bin supporting legs 2, be equipped with supporting leg load-bearing monitoring means, this supporting leg load-bearing monitoring means comprises the micrometric displacement detection module 2 that is located on the feed bin supporting leg, micrometric displacement detection module 2 is connected to signal and amplifies and A/D modular converter 3, be connected with Zigbee partial node 5 on signal amplification and the A/D modular converter 3, control system 4 is connected with Zigbee wireless transport module 8, and signal amplifies and A/D modular converter 3 is connected with control system 4 with Zigbee wireless transport module 8 by Zigbee partial node 5; Also be connected with temperature compensation module 6 and display screen 7 on signal amplification and the A/D modular converter 3.
Micrometric displacement detection module 2 can be selected diplopore beam sensor, eddy displacement sensor, capacitance gage, inductance sensor, hall displacement transducer or photoelectric displacement sensor or the like for use, is that example is elaborated with diplopore beam sensor, eddy displacement sensor below.
One, diplopore beam sensor
See figures.1.and.2, micrometric displacement detection module 2 comprises a diplopore beam sensor 21, one end of diplopore beam sensor 21 is fixedly mounted on the sensor platform 22 that is welded on the feed bin supporting leg 1, on a detection platform 24, detection platform 24 is welded on the feed bin supporting leg 1 other end of diplopore beam sensor 21 by displacement detecting bolt 23 contacts of responding to micrometric displacement; The upper and lower faces of diplopore beam sensor 21 diplopores respectively posts two foil resistance foil gauges 25, and forms the full-bridge testing circuit, and its extension line 251 is connected to signal and amplifies and A/D modular converter 3.
For displacement detecting bolt 23 is combined with detection platform 24 closely, the front portion of displacement detecting bolt 23 is provided with a stainless steel ball 26, detection platform 24 is provided with a stainless steel gasket 27, the middle part of stainless steel gasket 27 offers an aperture 271, stainless steel ball 26 contacts are on aperture 271, aperture 271 is the chamfering of 0.3mm, and its diameter is about half of stainless steel ball 26 diameters.
Brief description is principle of work once: according to mechanics of materials theorem, deformation can take place in the feed bin supporting leg when bin-level changes, and the bearing capacity of the size of its deformation and feed bin supporting leg is proportional:
σ＝F/E................................................(1)
In the formula: σ is the relative deformation at power effect blanking bin supporting leg
F is the load-bearing N of feed bin supporting leg
E is the elastic modulus of leg material
Native system is directly with the primary element of supporting leg as sensor itself, supporting leg produces distortion under the effect of bearing capacity, its deformation rule is by formula shown in (1), setting two stress trajectory points on supporting leg is sensor platform and detection platform, its spacing is from being L, so under the effect of bearing capacity, L its deflection Δ L that will change is:
ΔL＝L×σ................................................(2)
Native system with the diplopore beam sensor as secondary micro-displacement sensing element, be used for detecting above-mentioned Δ L, read image data with detection signal output and after signal amplification and A/D conversion by following level controlling system by the full-bridge testing circuit that the foil resistance foil gauge is formed.
Above-mentioned detection sensing process, be actually the stress that the load of feed bin is caused the feed bin supporting leg, make supporting leg produce deformation Δ L, act on the diplopore beam sensor by the displacement detecting bolt, the output of generation signal, the size of output signal is directly proportional with Δ L, and Δ L is after L determines, be directly proportional with the carrying of supporting leg, so the output signal of micrometric displacement detection module after amplifying is directly proportional with the carrying of feed bin.
At 350 tons of feed bins of laboratory imitation, get about L=13mm, Δ L is about 0.005mm when the fully loaded variation of feed bin zero load.The sensitivity that each supporting leg detects can make each divide supporting leg detection sensitivity consistent by fine setting L, and this is for the calculating of system and compensate highly beneficial.
Two, eddy displacement sensor
With reference to Fig. 1 and Fig. 3, micrometric displacement detection module 2 comprises that one is installed in the eddy displacement sensor 28 on the supporting leg, eddy displacement sensor 28 is installed on the eddy current sensor erection support 30, a stainless steel sensor background module 29 is pointed in the test side of eddy displacement sensor 28, sensor background module 29 is weldingly fixed on the supporting leg 1, and eddy displacement sensor 28 has an eddy current sensor output signal cable line 281.12v is provided direct supply for eddy displacement sensor 28 by eddy current sensor output signal cable line 281, and by eddy current sensor output signal cable line 281 output signal is amplified and A/D modular converter 3 simultaneously.Eddy displacement sensor 28 is fine motion adjusting up and down on eddy current sensor erection support 30.Sensor background module 29 produces different eddy current loss with the micrometric displacement of the test side of eddy displacement sensor 28 and produces signal output, and output signal determines the micrometric displacement size, thereby calculates the load capacity of a supporting leg.
Above-mentioned only is embodiment of the present utility model, but design concept of the present utility model is not limited thereto, and allly utilizes this design that the utility model is carried out the change of unsubstantiality, all should belong to the behavior of invading the utility model protection domain.
Claims (9)
1. bin-level on-line intelligence monitoring system, comprise feed bin with some supporting legs, it is characterized in that: at least one supporting leg, be provided with supporting leg load-bearing monitoring means, this supporting leg load-bearing monitoring means comprises the micrometric displacement detection module, this micrometric displacement detection module is connected to signal and amplifies and the A/D modular converter, and this signal amplifies and the A/D modular converter is connected to control system by wireless transport module and/or wireline interface.
2. bin-level on-line intelligence monitoring system as claimed in claim 1 is characterized in that: be equipped with described supporting leg load-bearing monitoring means on all supporting legs of feed bin.
3. bin-level on-line intelligence monitoring system as claimed in claim 1 is characterized in that: be connected with temperature compensation module on described signal amplification and the A/D modular converter.
4. bin-level on-line intelligence monitoring system as claimed in claim 1 is characterized in that: be connected with display screen on described signal amplification and the A/D modular converter.
5. bin-level on-line intelligence monitoring system as claimed in claim 1, it is characterized in that: described micrometric displacement detection module comprises a diplopore beam sensor, one end of this diplopore beam sensor is fixedly mounted on the sensor platform that is welded on the supporting leg, on a detection platform, this detection platform is welded on the supporting leg other end of this diplopore beam sensor by a displacement detecting bolt contact of responding to micrometric displacement; The upper and lower faces of this diplopore beam sensor diplopore respectively posts two foil resistance foil gauges, and forms the full-bridge testing circuit, and its output is connected to described signal and amplifies and the A/D modular converter.
6. bin-level on-line intelligence monitoring system as claimed in claim 5, it is characterized in that: the front portion of described displacement detecting bolt is provided with a stainless steel ball, described detection platform is provided with a stainless steel gasket, the middle part of this stainless steel gasket offers an aperture, and this stainless steel ball contact is on this aperture.
7. bin-level on-line intelligence monitoring system as claimed in claim 1, it is characterized in that: described micrometric displacement detection module comprises that one is installed in the eddy displacement sensor on the supporting leg, a sensor background module is pointed in the test side of this eddy displacement sensor, and this sensor background module is weldingly fixed on the supporting leg.
8. bin-level on-line intelligence monitoring system as claimed in claim 1 is characterized in that: described micrometric displacement detection module adopts capacitance gage, inductance sensor, hall displacement transducer or photoelectric displacement sensor.
9. bin-level on-line intelligence monitoring system as claimed in claim 1, it is characterized in that: be connected with the Zigbee partial node on described signal amplification and the A/D modular converter, described control system is connected with the Zigbee wireless transport module, and this signal amplifies and the A/D modular converter is connected with control system with this Zigbee wireless transport module by this Zigbee partial node.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120055247 CN202025205U (en) | 2011-03-04 | 2011-03-04 | Online intelligent silo material level monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120055247 CN202025205U (en) | 2011-03-04 | 2011-03-04 | Online intelligent silo material level monitoring system |
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| CN202025205U true CN202025205U (en) | 2011-11-02 |
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| CN 201120055247 Expired - Lifetime CN202025205U (en) | 2011-03-04 | 2011-03-04 | Online intelligent silo material level monitoring system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654414A (en) * | 2011-03-04 | 2012-09-05 | 福建南方路面机械有限公司 | Online intelligent stock bin level monitoring system |
| CN103487109A (en) * | 2013-09-30 | 2014-01-01 | 南车株洲电力机车有限公司 | Device for detecting sand amount position in sand box of rail transport vehicle |
| CN103616054A (en) * | 2013-11-20 | 2014-03-05 | 南车株洲电力机车有限公司 | Railway vehicle and sand level display device thereof |
| CN106052770A (en) * | 2016-08-03 | 2016-10-26 | 中国地质大学（武汉） | Two-phase flow measuring device |
| CN108120412A (en) * | 2018-01-24 | 2018-06-05 | 三汽车制造有限公司 | Gap detection device and mechanical equipment |
-
2011
- 2011-03-04 CN CN 201120055247 patent/CN202025205U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654414A (en) * | 2011-03-04 | 2012-09-05 | 福建南方路面机械有限公司 | Online intelligent stock bin level monitoring system |
| CN103487109A (en) * | 2013-09-30 | 2014-01-01 | 南车株洲电力机车有限公司 | Device for detecting sand amount position in sand box of rail transport vehicle |
| CN103616054A (en) * | 2013-11-20 | 2014-03-05 | 南车株洲电力机车有限公司 | Railway vehicle and sand level display device thereof |
| CN106052770A (en) * | 2016-08-03 | 2016-10-26 | 中国地质大学（武汉） | Two-phase flow measuring device |
| CN108120412A (en) * | 2018-01-24 | 2018-06-05 | 三汽车制造有限公司 | Gap detection device and mechanical equipment |
| CN108120412B (en) * | 2018-01-24 | 2023-08-22 | 三一汽车制造有限公司 | Gap detection device and mechanical equipment |
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Address after: Quanzhou city high tech Industrial Park District 362000 of Fujian Province Patentee after: Fujian Nanfang pavement machinery Co., Ltd Address before: Quanzhou city high tech Industrial Park District 362000 of Fujian Province Patentee before: FUJIAN SOUTH HIGHWAY MACHINERY Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
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Granted publication date: 20111102 |