CN109341809A - A kind of electric contact type powder storehouse material level management system and powder computation method for hot - Google Patents

A kind of electric contact type powder storehouse material level management system and powder computation method for hot Download PDF

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Publication number
CN109341809A
CN109341809A CN201811541209.3A CN201811541209A CN109341809A CN 109341809 A CN109341809 A CN 109341809A CN 201811541209 A CN201811541209 A CN 201811541209A CN 109341809 A CN109341809 A CN 109341809A
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China
Prior art keywords
silo
pressure sensor
signal lamp
contact type
management system
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Withdrawn
Application number
CN201811541209.3A
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Chinese (zh)
Inventor
葛延玲
郭万辉
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Ho Yu (beijing) Technology Co Ltd
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Ho Yu (beijing) Technology Co Ltd
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Priority to CN201811541209.3A priority Critical patent/CN109341809A/en
Publication of CN109341809A publication Critical patent/CN109341809A/en
Withdrawn legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00Measuring or testing not otherwise provided for
    • G01D21/02Measuring two or more variables by means not covered by a single other subclass
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/14Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
    • G01F23/18Indicating, recording or alarm devices actuated electrically
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01GWEIGHING
    • G01G17/00Apparatus for or methods of weighing material of special form or property
    • G01G17/04Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
    • G01G17/06Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes having means for controlling the supply or discharge

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

The present invention relates to silo material administrative skill fields, specifically a kind of electric contact type powder storehouse material level management system and powder computation method for hot, including silo, the silo whole design is cylindrical structure, the cubic position of the inner sidewall of the silo is mounted on shield, if arterial highway pressure sensor has been mounted equidistant in the shield, the cubic position of the lateral wall of the silo is mounted on signal lamp, the signal lamp and pressure sensor are in one-to-one relationship, corresponding signal lamp and pressure sensor are located in same horizontal line, the pressure sensor forms contact induction to the material of silo inner cavity and is in be electrically connected by signal wire with the signal lamp of silo outer wall.The present invention uses direct contact type measurement method, and can carry out comprehensive multiple spot installation according to the requirement of measurement accuracy, and measurement accuracy is more increased.

Description

A kind of electric contact type powder storehouse material level management system and powder computation method for hot
Technical field
The present invention relates to silo material administrative skill field, specifically a kind of electric contact type powder storehouse material level management system and powder Expect computation method for hot.
Background technique
With the raising of the degree of automation, the measurement method of raw material position in storehouse more and more uses instrument to replace artificial behaviour Make.Level-sensing device is many kinds of in market, carries out reasonably being selected to solve the problems, such as the pass of level measurement according to feed bin situation Key.Most stable in level measurement, most reliable mode is traditional manual measurement method.But since field working conditions are extremely disliked It is bad, risk is big, be not suitable for manual operation.With scientific development, more and more measurement methods are available, such as: resistance rotation, sound The switching values such as fork, radio frequency admittance measurement method and weight, condenser type, Weighing type, radar, ultrasonic wave, gamma-rays etc. continuously measure Amount mode.But many measuring devices are restricted by measuring principle and scene, manufacturing condition, using not very ideal.It can be real The existing this level measurement instrument stringent to working condition requirement is very few.
The measurement method of level-sensing device is broadly divided into two kinds at present, contact type measurement mode and non-contact measurement mode.It is right The analysis of existing various forms level-sensing device, major defect are as follows:
Contact:
Plumb-bob Material Level Meter: the disadvantage is that machine internal, which easily falls dust, influences measurement effect;Level switch mechanical wear is more serious, needs It is regularly maintained, spends larger;Weight easily occurs to bury phenomenon by material, falls tup, disconnected tape jam.
Capacitance level meter: the disadvantage is that if on electrode (probe) or bulkhead is stained with material, it frequently can lead to controller generation Malfunction, to influence measurement effect, probe and action situation should be inspected periodically and verify.
Blocking rotary type level-sensing device: the disadvantage is that being not suitable for working at high temperature, discontinuous measurement is not durable.
It is contactless:
Gamma-ray level indicator: the disadvantage is that radioactive source pollutes environment, there is injury to human body, radioactive source management policy is strong;Radioactive source Decaying keeps Level control unreliable.
Ultrasonic material level detection unit: ultrasonic wave must be propagated by means of medium, the level measurement in cement plant usually using air as Propagation medium, and the variations such as the temperature of air, humidity will affect ultrasonic propagation velocity, therefore have temperature, pressure, steam some Etc. occasions, the level-sensing device cisco unity malfunction;Expect the dust also ultrasonic attenuation signal in the air of library, influences measurement effect;By It is very loose when powder storehouse material level surface is in blanking, there is stronger attenuation to ultrasonic signal, therefore to the measurement effect of powder storehouse material level It is poor.
Radar level gauge: the disadvantage is that two-wire system radar level gauge requires 24VDC power quality higher, AC harmonic is generally not It can exceed that ± 30VAC;Radar level gauge internal electric source module is interfered vulnerable to other high currents and is damaged, therefore level-sensing device should be had a power failure It removes;Solid material is measured, signal decaying is serious, is also easy to produce interference echo, reduces measurement effect, therefore is not suitable for solid material Measurement.
Guided wave formula radar level gauge: the disadvantage is that double rod (cable) and coaxial tubular type wave director be since electric field energy is concentrated, vulnerable to External structure influences;Easy buildup between the bars (or inside pipe) generates spurious echo, influences measurement effect;It is embedded in material Hawser causes hawser the failures such as to be pulled off since material gravity can generate biggish lower pulling force.
Radio frequency admittance level-sensing device: the disadvantage is that requiring material dielectric constant stringent.
Laser material position meter: the disadvantage is that vulnerable to test wave band light source interference, straightline propagation diffraction generates can be poor.
Cost is relatively low in the prior art, and construction is most reasonably Kistler-Morse- patch type weight material position system, Kistler-Morse- patch type weight material position system main operational principle is with bolt that the patch type sensor of KM is closely solid It is scheduled on the steel loop of bin bottom, steel loop deformation while will drive the deformation together of patch type sensor, pass through sensor internal Hypersensitivity foil gauge " perception " deformation, deformation quantity is converted into electric signal, finally obtains feed bin weight value.But the party Case designs not with material directly contact, and wind-engaging power, vibration, sleet etc. are affected in terms of pressure control.
Summary of the invention
The purpose of the present invention is to provide a kind of electric contact type powder storehouse material level management system and powder computation method for hot, with Solve the problems mentioned above in the background art.
To achieve the above object, the invention provides the following technical scheme:
A kind of electric contact type powder storehouse material level management system, including silo, the silo whole design are cylindrical structure, the cylinder The bottom in storehouse is provided with feeding chamber, and the feeding chamber is set as the cone tip part setting of the conical structure of inverted type and feeding chamber There is conveying mouth, belt conveyor is installed at the top of the silo, the material receiving port of the silo is located at the conveying of belt conveyor The cubic position of the lower section at end, the inner sidewall of the silo is mounted on shield, if arterial highway pressure has been mounted equidistant in the shield Force snesor, the cubic position of the lateral wall of the silo are mounted on signal lamp, and the signal lamp and pressure sensor are in one One corresponding relationship, corresponding signal lamp and pressure sensor are located in same horizontal line, and the pressure sensor is in silo The material of chamber forms contact induction and is in be electrically connected by signal wire with the signal lamp of silo outer wall.
As a further solution of the present invention: the shield uses stainless steel protection cover.
As a further solution of the present invention: the contact position of the pressure sensor offers measured hole, the measurement Pressure contact is installed in hole, contact protection film is pasted at the measured hole.
As a further solution of the present invention: the signal lamp includes criticality alarm lamp and height indicator light, described to face Boundary's alarm lamp is located at the top and bottom of each column signal lamp, and the middle position of each column signal lamp is arranged in the height indicator light.
As a further solution of the present invention: the external control cabinet of the silo, display and power supply, the signal lamp, pressure Force snesor, control cabinet, display and power supply are in electrical connection, are provided with pressure between the signal lamp and pressure sensor Control switch, the signal lamp, control switch and pressure sensor are by conducting wire connection and form series circuit, and above-mentioned every group Formation parallel circuit parallel with one another, the parallel circuit are in again to be serially connected with control cabinet, display and power supply to series circuit again.
As a further solution of the present invention: it is in be electrically connected that the pressure sensor passes through signal wire with control cabinet respectively.
As further scheme of the invention: the power supply uses V AC power source.
The present invention also announces a kind of computation method for hot of powder in electric contact type powder cabin, the calculation method include with Lower step:
Step 1: according to the structure size of silo, volume of material V1 in the feeding chamber of silo bottom cone is calculated;
Step 2: further according to the angle of repose a by material accumulation, 1 top mound total volume V2 of silo is calculated, then upper and lower side material The weight G of accumulation=(V1+V2) ρ, wherein ρ is material density in silo;
Step 3;According to the altitude information measured on the four direction of silo side wall, to take its average value height H, then silo Interior material total weight W=ρ V+G=ρ π r2H+G, wherein ρ is material density in silo, and π is constant, and r is silo radius, and G is step Two fixed values calculated.
Compared with prior art, the beneficial effects of the present invention are:
One, uses direct contact type measurement method from the aspect of measurement accuracy in this system, and can be according to measurement accuracy It is required that carrying out comprehensive multiple spot installation, measurement accuracy is more increased.The mode installed inside silo has ignored extraneous wind substantially Influence of the factors such as power, vibration, sleet to measurement accuracy, comparing the mode that previous mode is installed on silo foundation is one bright Aobvious raising.
Two, from management aspect consider, this system can be realized position in storehouse instruction, data acquisition, tonnage calculate, data transmission, The functions such as the critical warning of position in storehouse, break tour data save, initial parameter is arranged.In addition this system is pacified in the corresponding position of silo outer wall Fill high brightness indicator light, can material situation in more intuitive display silo, facilitate management.
From economic considerations, the equipment and material cost selected in this system are lower by three, it is corresponding maintenance and maintenance at Originally it will be lower than the same type prior art.The direct physics instruction of position in storehouse, without conversion.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not The application can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and meets implementation of the invention to show Example, and be used to explain the principle of the present invention together with specification.Meanwhile these attached drawings and verbal description are not intended to by appointing Where formula limits the range of the application design, but illustrates the application's by referring to specific embodiments for those skilled in the art Concept.
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is electrical connection schematic diagram of the invention.
Fig. 3 is Computing Principle schematic diagram of the invention.
In figure: 1- silo, 2- signal wire, 3- signal lamp, 4- pressure sensor, 5- contact protection film, 6- shield, 7- object Material, 8- belt conveyor, 9- control cabinet, 10- electric connection line, 11- display, 12- criticality alarm lamp, 13- height indicator light, 14- pressure control switch, 15- power supply.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, the example is illustrated in the accompanying drawings.In the following description when referring to the accompanying drawings, unless otherwise indicated, the phase in different attached drawings Or same element identical with digital representation.
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts Example is applied, shall fall within the protection scope of the present invention.
Embodiment one:
Fig. 1 and Fig. 2, a kind of electric contact type powder storehouse material level management system, including silo 1 are please referred to, 1 whole design of silo is Cylindrical structure, the bottom of the silo 1 are provided with feeding chamber, the feeding chamber be set as the conical structure of inverted type and The cone tip part of feeding chamber is provided with conveying mouth, and the top of the silo 1 is equipped with belt conveyor 8, the material receiving port of the silo 1 Positioned at the lower section at the conveying end of belt conveyor 8, the cubic position of the inner sidewall of the silo 1 is mounted on shield 6, the shield Cover 6 uses stainless steel material, if arterial highway pressure sensor 4 has been mounted equidistant in the shield 6, the lateral wall of the silo 1 Cubic position is mounted on signal lamp 3, and the signal lamp 3 is in one-to-one relationship, corresponding signal lamp with pressure sensor 4 3 are located in same horizontal line with pressure sensor 4, and the pressure sensor 4 forms contact induction to the material of 1 inner cavity of silo It and is in be electrically connected by signal wire 2 with the signal lamp 3 of 1 outer wall of silo.The side of 1 inner wall multiple spot of silo installation described herein The phenomenon that formula selects stainless steel material to make shield, prevents material humidity from causing passport corrosion that material is caused to be bonded.
The contact position of the pressure sensor 4 offers measured hole, and pressure contact is equipped in the measured hole, described Contact protection film 5 is pasted at measured hole.The sealing of high resiliency contact protection film is selected at shield measured hole, is guaranteed good Transmitting pressure under can prevent influence of the dust to equipment internal element and measurement accuracy.
The external control cabinet 9 of the silo 1, display 11 and power supply 15, the signal lamp 3, pressure sensor 4, control cabinet 9, display 11 and power supply 15 are in electrical connection, are provided with pressure control switch between the signal lamp 3 and pressure sensor 4 14, the signal lamp 3, control switch 14 connect by conducting wire with pressure sensor 4 and are formed series circuit, above-mentioned every group of string Join circuit formation parallel circuit parallel with one another again, the parallel circuit is again with control cabinet 9, display 11 and power supply 15 in mutually string Connection.The pressure sensor 4 is in respectively to be electrically connected with control cabinet 9 by signal wire 2, and the power supply 15 uses 220V alternating current Source.
The working principle of the invention is: selecting the shield 6 of stainless steel material in the application, opens measured hole on shield 6.It is high-precision Degree pressure sensor is mounted at measured hole, and is sealed with high resiliency mould in order to avoid influencing pressure contact measurement accuracy, and pressure is touched Head can be small by high resiliency touch sensible ambient pressure variation.When operation, material contact pressure contact, pressure sensor hair Signal out, and signal is exported to control cabinet 9, the control cabinet 9 controls pressure control switch 14 by electric signal and is closed, from And make series circuit be in connected state, and then light the signal lamp 3 of corresponding position, so as to intuitively show inside silo Material position
This system selects element to generate without radiation, has prevented the possibility of radioactive waste environment;This system design is using pressure Power sensing contact is led into the control mode directly reflected, to factors such as the sonic transmissions speed of material itself, dielectric constant, light sources No requirement (NR) is applicable in more extensively;This system design is calculated by the real-time position in storehouse monitoring of variation solid line of controlling level by program Position in storehouse turnover real time monitoring can be achieved.
Embodiment two:
Fig. 1 and Fig. 2 are please referred to, the present embodiment further optimizes as embodiment one, and on its basis, the signal lamp 3 wraps Criticality alarm lamp 12 and height indicator light 13 are included, the criticality alarm lamp 12 is located at the top and bottom of each column signal lamp 3, institute State the middle position that each column signal lamp 3 is arranged in height indicator light 13.
In the installation of the application silo 1, highest measurement point can be arranged in the top of silo 1, by minimum measurement point It is mounted at the critical line between silo 1 and feeding chamber, to install critical report in highest measurement point and minimum measurement point Warning lamp 12, is height indicator light 13 between upper and lower criticality alarm lamp 12, and height indicator light 13 is used for the height of real-time tracing material Variation, the criticality alarm lamp 12 at top are used to indicate that material to have the risk overflowed, and the criticality alarm lamp 12 of bottom is for indicating Material will be finished, so that prompt timely closes the conveying of belt conveyor 8 or opens the conveying of belt conveyor 8.
According to design accuracy needs, the size in the installation gap of 4 contact of pressure sensor may be selected, realize that multiple spot is continuously surveyed Amount.Signal lamp is installed on the outside of the corresponding bulkhead of measurement point, to meet the storing demand of different classes of, different height silo 1.
Embodiment three:
Referring to Fig. 3, the present embodiment further optimizes as embodiment one, on its basis, the application also announces one kind The computation method for hot of powder in electric contact type powder cabin, the calculation method includes following steps:
Step 1: according to the structure size of silo 1, calculating volume of material V1 in the feeding chamber of 1 bottom of silo cone,
Step 2: further according to the angle of repose a by material accumulation, 1 top mound total volume V2 of silo is calculated, then upper and lower side material The weight G of accumulation=(V1+V2) ρ, wherein ρ is material density in silo;
Step 3;According to the altitude information measured on the four direction of 1 side wall of silo, to take its average value height H, then silo Interior material total weight W=ρ V+G=ρ π r2H+G, wherein ρ is material density in silo, and π is constant, and r is silo radius, and G is step Two fixed values calculated.
This system is to be realized by detecting the height of material to silo materials inside position implementing monitoring, passes through height of materials And volume change can calculate the variation of weight of material in silo.If the following material of lower critical line in silo+by repose angle of material The mound total weight of formation is G, then material total weight W=ρ V+G=ρ π r2H+G in silo, and ρ is material density in silo, and π is normal Number, r are silo radius, and G is fixed value, then weight of material can be determined by H value in silo.Because being mounted on four direction then H Value is the average value of H value on four direction.The distance between two measurement points are measurement error, and theoretically measurement error can be unlimited Reduction forms successive value.
The electric signal metering-in control system that data are issued by high-precision pressure sensor in this system operation, control system By the accuracy computation to H value, powder flow calculating, position in storehouse criticality alarm, the automatic data save, transmission, initial parameter are realized The functions such as setting.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims (8)

1. a kind of electric contact type powder storehouse material level management system, including silo (1), silo (1) whole design is cylindrical knot Structure, the bottom of the silo (1) are provided with feeding chamber, and the feeding chamber is set as the conical structure and feeding chamber of inverted type Cone tip part be provided with conveying mouth, be equipped with belt conveyor (8) at the top of the silo (1), the material receiving port of the silo (1) Positioned at the lower section at the conveying end of belt conveyor (8), which is characterized in that pacify the cubic position of the inner sidewall of the silo (1) Equipped with shield (6), the shield (6) if in be mounted equidistant arterial highway pressure sensor (4), the lateral wall of the silo (1) Cubic position is mounted on signal lamp (3), and the signal lamp (3) and pressure sensor (4) are in one-to-one relationship, corresponding Signal lamp (3) and pressure sensor (4) are located in same horizontal line, material of the pressure sensor (4) to silo (1) inner cavity It forms contact induction and is in be electrically connected by signal wire (2) with the signal lamp (3) of silo (1) outer wall.
2. electric contact type powder storehouse material level management system according to claim 1, which is characterized in that the shield (6) uses Stainless steel protection cover.
3. electric contact type powder storehouse material level management system according to claim 1, which is characterized in that the pressure sensor (4) contact position offers measured hole, and pressure contact is equipped in the measured hole, and contact guarantor is pasted at the measured hole Cuticula (5).
4. electric contact type powder storehouse material level management system according to claim 1, which is characterized in that signal lamp (3) packet Criticality alarm lamp (12) and height indicator light (13) are included, the criticality alarm lamp (12) is located at the top of each column signal lamp (3) And bottom, middle position of height indicator light (13) setting in each column signal lamp (3).
5. electric contact type powder storehouse material level management system according to claim 1 to 4, which is characterized in that the silo (1) external control cabinet (9), display (11) and power supply (15), the signal lamp (3), pressure sensor (4), control cabinet (9), Display (11) and power supply (15) are in electrical connection, are provided with pressure control between the signal lamp (3) and pressure sensor (4) System switch (14), the signal lamp (3), control switch (14) are connect by conducting wire with pressure sensor (4) and form series connection Circuit, above-mentioned every group of series circuit formation parallel circuit parallel with one another again, the parallel circuit again with control cabinet (9), display (11) and power supply (15) is in be serially connected.
6. electric contact type powder storehouse material level management system according to claim 5, which is characterized in that the pressure sensor (4) passing through signal wire (2) respectively with control cabinet (9) is in be electrically connected.
7. electric contact type powder storehouse material level management system according to claim 5, which is characterized in that the power supply (15) uses 220V AC power source.
8. the computation method for hot of powder in a kind of electric contact type powder cabin, which is characterized in that the calculation method includes following Step:
Step 1: according to the structure size of silo (1), volume of material V1 in the feeding chamber of silo (1) bottom cone is calculated;
Step 2: further according to the angle of repose a by material accumulation, mound total volume V2 at the top of silo (1) is calculated, then upper and lower side object Weight G=(V1+V2) ρ of material heap product, wherein ρ is material density in silo;
Step 3;According to the altitude information measured on the four direction of silo (1) side wall, to take its average value height H, then cylinder The interior material total weight W=ρ V+G=ρ π r2H+G in storehouse (1), wherein ρ is material density in silo, and π is constant, and r is silo radius, and G is The fixed value that step 2 calculates.
CN201811541209.3A 2018-12-17 2018-12-17 A kind of electric contact type powder storehouse material level management system and powder computation method for hot Withdrawn CN109341809A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111047211A (en) * 2019-12-23 2020-04-21 河北山宝环境工程有限责任公司 Dust data comprehensive analysis system and analysis method
CN111637949A (en) * 2020-07-07 2020-09-08 中冶北方(大连)工程技术有限公司 System and method for analyzing center section of bin level
CN113029278A (en) * 2021-03-05 2021-06-25 徐州徐工施维英机械有限公司 Stock bin material level measuring device and method, stock bin and concrete mixing plant
CN113170651A (en) * 2021-05-25 2021-07-27 潍柴雷沃重工股份有限公司 Granary, granary grain uniform distribution control method and harvester
RU2777122C1 (en) * 2021-12-13 2022-08-01 Акционерное общество "Научно-производственный комплекс "ВИП" Tank for liquid or bulk material and strain gauge level sensor for liquid or bulk material
CN114964437A (en) * 2022-04-13 2022-08-30 成都百威智联科技有限公司 Method, device and system for automatically measuring grain quantity of conical cylindrical bin

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111047211A (en) * 2019-12-23 2020-04-21 河北山宝环境工程有限责任公司 Dust data comprehensive analysis system and analysis method
CN111047211B (en) * 2019-12-23 2023-12-19 河北山宝环境工程有限责任公司 Dust data comprehensive analysis system and analysis method
CN111637949A (en) * 2020-07-07 2020-09-08 中冶北方(大连)工程技术有限公司 System and method for analyzing center section of bin level
CN111637949B (en) * 2020-07-07 2023-08-08 中冶北方(大连)工程技术有限公司 System and method for analyzing material bin material level center section
CN113029278A (en) * 2021-03-05 2021-06-25 徐州徐工施维英机械有限公司 Stock bin material level measuring device and method, stock bin and concrete mixing plant
CN113170651A (en) * 2021-05-25 2021-07-27 潍柴雷沃重工股份有限公司 Granary, granary grain uniform distribution control method and harvester
RU2777122C1 (en) * 2021-12-13 2022-08-01 Акционерное общество "Научно-производственный комплекс "ВИП" Tank for liquid or bulk material and strain gauge level sensor for liquid or bulk material
CN114964437A (en) * 2022-04-13 2022-08-30 成都百威智联科技有限公司 Method, device and system for automatically measuring grain quantity of conical cylindrical bin
CN114964437B (en) * 2022-04-13 2024-02-13 成都百威智联科技有限公司 Method, device and system for automatically measuring grain quantity of conical silo

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