CN106250977B - A kind of count detection method of belt conveyor - Google Patents
A kind of count detection method of belt conveyor Download PDFInfo
- Publication number
- CN106250977B CN106250977B CN201610813722.8A CN201610813722A CN106250977B CN 106250977 B CN106250977 B CN 106250977B CN 201610813722 A CN201610813722 A CN 201610813722A CN 106250977 B CN106250977 B CN 106250977B
- Authority
- CN
- China
- Prior art keywords
- conveying objects
- optoelectronic switch
- belt conveyor
- length
- detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
- G06M7/00—Counting of objects carried by a conveyor
- G06M7/02—Counting of objects carried by a conveyor wherein objects ahead of the sensing element are separated to produce a distinct gap between successive objects
- G06M7/04—Counting of piece goods, e.g. of boxes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Control Of Conveyors (AREA)
Abstract
The present invention discloses a kind of count detection method of belt conveyor, two pairs of correlation type optoelectronic switches of interval setting on the upper side frame of the transmission belt two sides of belt conveyor, each pair of optoelectronic switch is in penetrating position, optoelectronic switch is connect with counting control unit, two pairs of optoelectronic switches are detected to by the conveying objects of detection zone simultaneously, the average transmission speed of transmission belt is measured by the time of corresponding test point according to the distance between two detection location points and conveying objects, the actually detected length M of conveying objects is calculated in the runing time of each test point according to conveying objectsIt surveys, according to η=MIt surveys/MBenchmark, the quantity of conveying objects is obtained, and carry out accumulated counts.It is an advantage of the invention that capableing of the average transmission speed of effectively measuring conveying objects out, the precision that detection connects bag number is improved, realizes accurate metering.
Description
Technical field
The present invention relates to the counted fields that portable belt conveyer, carloader etc. transmit packed object, in particular to one
The count detection method of kind belt conveyor.
Background technique
Belt conveyor is important transmission device used in modern production operation, especially grain, cement, chemical fertilizer,
Salt industry, feed, sugar industry, chemical industry, building materials etc. are that its production is set with essential in circulation in the industry characterized by bag is packed
It is standby, and count detection method to ensure belt conveyor transmit packed object when count accuracy, working efficiency raising and
The diversity requirement etc. for meeting user is particularly important.It is carried out in transmission operation using belt conveyor, if transmission
Be fixed shaped objects or be to transmit the non-fixed forms object such as packed type objects by the work flow of specification indoors
Body, count detection method is relatively simple, and very reliable, however, not taking by the non-solid of normative operation process progress
Determine in the transmission operation of shaped article, the requirement to count detection method is then higher.The transmission operation of usual packed object is basic
All be open wide or half open environment in carry out, therefore, the disturbing factor in counting process in terms of the working environment
It is more, such as: winged insect, the object that floats etc.；In addition, bag rope, the overlap of packaging bag, transmission belt are worn and the flash etc. of generation, and
The Important Disturbed Factors of count accuracy are influenced, the presence of these above-mentioned disturbing factors not only proposes count detection method
Higher requirement.
Currently, the counting for the packed object on belt conveyor, it is common that carried out using a pair to optoelectronic switch is penetrated
Detection, there are mainly two types of detection methods.
The first detection method is during passing through a pair with object to optoelectronic switch is penetrated, and optoelectronic switch occurs level and jumps
Become benchmark to be confirmed and counted.It is detected with the normally closed optoelectronic switch of correlation type NPN to illustrate: when conveying objects pass through
When, with optoelectronic switch is blocked by conveying objects and is confirmed what is generated jumps to low level moment by original high level,
And when being left with object, optoelectronic switch jumps to the moment of high level by low level to complete to confirm and carry out accumulated counts.This
Kind detection method is for fixed shaped objects, especially its standardization in the work environment without disturbing factors such as winged insect, the objects that floats
In operation, very reliably, however, for the bag-shaped class conveying objects of non-fixed form, due to there are many interference because
Element can not especially be identified in the case where there is even bag, cause the error rate of detection higher, and can reduce counting can
By property, therefore, seldom it is used in the counting operation of current belt conveyor.
Second of detection method is confirmed by a pair to the time span for penetrating optoelectronic switch according to conveying objects
And counting.The basic principle of this detection method is: when passing through a pair of of optoelectronic switch with object, optoelectronic switch is jumped by high level
The time interval for starting to it level jump twice that high level moment is jumped to by low level to low level, as the object measured
Body is by the time span of optoelectronic switch, according to the fiducial time length of conveying objects preset in counting control unit
(fiducial time length described herein refers to, obtains average length of time of the single body by optoelectronic switch according to test, with
This is as the basic parameter for comparing and determining object to be detected quantity) ratio, to be confirmed and be counted.With the first detection
Method is compared, and the accuracy rate of this count detection method is greatly improved, and is increased to 95% or more, is current packed object
Count detection method be widely used, the especially production and circulation in cement, grain, chemical fertilizer, salt industry, sugar industry, chemical industry etc.
Field application is more universal.It is existing to lack although the detection method is greatly improved compared with the first detection method
It falls into and cannot be neglected, firstly, the fiducial time length as basic parameter, is to calculate to obtain under light condition, by
In conveyer in load operating, speed of service right and wrong at the uniform velocity, it with object load-carrying in transmission belt difference and biography
The defeated difference for taking load distribution uniformity and generate variation, also, with use the time increase and the production of transmission device
The factors such as quality influence, and cause the aging and abrasion of transmission part, so that the variation of conveyer transmission speed is influenced,
And then influence the accuracy of counting；Secondly as the length that different size and the packed object of type are effectively detected is each
Not identical, this requires the packed objects to different size and type will carry out the measuring and calculating of fiducial time length parameter, this is just
Increase the limitation of this kind of detection method practical application；Again, since the transmission speed of different conveyers is not quite similar, because
This, will individually carry out every conveyer the measuring and calculating of fiducial time length parameter, increase cost.Packed object is transmitting
The display case taken, also will affect it can be effectively recognized out the accuracy for connecting bag quantity in even bag.Due to upper
The presence of factor is stated, although joined one in the fiducial time length parameter of measuring and calculating and connect the confirmation of bag quantity to object during
A little compensation data methods, but still cannot the effective company's of identifying bag quantity, affect the accuracy of counting.
The detection method of the packed object count of current transmission is not fully solved the problem of count accuracy also, therefore, in addition to
In the productions such as grain, cement, chemical fertilizer, salt industry, feed, sugar industry, chemical industry, building materials and outbound outside commonly used counter, at this
The field of circulation the most active uses artificial counting substantially in a little industries.This is exactly that the application needs place improved emphatically.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of counting inspection of belt conveyor that count accuracy is high
Survey method.
For the technical problem more than solving, the present invention provides a kind of count detection methods of belt conveyor, in skin
On the upper side frame of transmission belt two sides with conveyer interval setting two pairs of correlation type optoelectronic switches, each pair of optoelectronic switch be in pair
Penetrate position, optoelectronic switch is connect with counting control unit, two pairs of optoelectronic switches simultaneously to the conveying objects by detection zone into
Row detection, measures transmission belt by the time of corresponding test point according to the distance between two detection location points and conveying objects
Average transmission speed calculates the actually detected length M of conveying objects according to conveying objects in the runing time of each test pointIt surveys,
According to η=MIt surveys/MBenchmark, the quantity of conveying objects is obtained, and carry out accumulated counts.
The length of minimum gauge conveying objects in the distance between two pairs of correlation type optoelectronic switches L≤detection zone ×
(1- γ), γ are penalty coefficient, value range 0.15-0.3.
Quantity η=M of the conveying objectsIt surveys/MBenchmark, wherein MBenchmarkBase for the conveying objects set in counting control unit
Standard length, MIt surveysFor the actually detected length value of conveying objects；η is integer, and it is as follows to be rounded rule:
1) when the integer part of fractional part >=0.43, η of η adds 1, fractions omitted part；
2) as the fractional part < 0.43 of η, the integer part of η is constant, fractions omitted part.
The MIt surveys=L+(L/t0) * t1 0, in which:
t0Transmission time for conveying objects from first pair of optoelectronic switch to second pair of optoelectronic switch；
t1 0When passing through for conveying objects, before first pair of optoelectronic switch generates second of level jump, conveying objects pass through
The transmission time of second pair of optoelectronic switch；
t1 0 And t0It detects to obtain according to the time of optoelectronic switch level jump by counting control unit.
The MBenchmarkFor first five single object measured in each counting operation detection length average value as base
Standard length is set in counting control unit.
The present invention is in each counting operation, according to measuring transmission belt from first test point to second test point time
Numerical value, the optoelectronic switch that will test maintain the low level period after jumping from high level to low level, are set as corresponding
Interference time length is ignored, and the influence of exclusive PCR factor is carried out.
Superior effect of invention is:
1) it is capable of the average transmission speed of effectively measuring conveying objects out, improves the precision that detection connects bag number, realizes
Accurate metering；
2) corresponding interference time length is set and is ignored the influence for carrying out exclusive PCR factor, and single conveying objects
Datum length MBenchmarkParameter, it is ensured that the accuracy of counting, and counting operation is simplified, it is easy to promote and utilize；
3) accuracy counted is improved, human cost and management cost are effectively saved；
4) conveying objects are detected by the operation conditions of two test points using two pairs of correlation type optoelectronic switches, with
This calculated transmission belt average speed is more accurate, it is ensured that the actually detected length M of conveying objectsIt surveysIt is more accurate, really
The accuracy counted is protected.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the schematic illustration of detection method；
Figure label explanation
1-belt conveyor；
101- rack upper side frame；102- transmission belt；
The mounting bracket of 2- optoelectronic switch；3- conveying objects；
4A, 4B-correlation type optoelectronic switch.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be defined by the claims
Implement with the multitude of different ways of covering.
The embodiment that the invention will now be described in detail with reference to the accompanying drawings, the present invention by taking the normally closed optoelectronic switch of correlation type NPN as an example,
The normally closed optoelectronic switch of correlation type NPN is in high level state when no object blocks, and low level shape is in when there is object to block
State.
As depicted in figs. 1 and 2, on the upper side frame 101 of 1 rack two sides of belt conveyor, detection position appropriate is selected
Point A, and be that detection location point B is determined at L away from A point distance along transmission belt transmission direction as datum mark.It is detecting respectively
At point A, B, the mounting bracket 2 of photoelectric sensor is fixed in the suitable position of machine frame at two sides upper side frame 101, by correlation type light
Electric switch 4A, 4B are separately fixed in corresponding mounting bracket, the position of correlation type optoelectronic switch 4A, 4B are finely tuned, so that each
Two optoelectronic switches in measurement point are in penetrating position.
Belt conveyor 1 detect to institute's conveying objects by counting control unit obtains corresponding detection data,
And Counts are realized in the operation that is carried out by counting control unit to these data and processing.When carrying out counting operation, open
The counting control unit of dynamic conveyer operates belt conveyor 1, conveying objects 3 is put on transmission belt 102, conveying objects
3 are followed by the operating of transmission belt 102 and are moved, and the correlation type optoelectronic switch on successive point A after testing, B location
4A, 4B, detection obtains corresponding testing number when counting control unit passes through correlation type optoelectronic switch 4A, 4B according to conveying objects
According to, and operation and processing are carried out to these data by counting control unit, to realize that accumulated counts work.
Using test point A as datum mark, i.e., as the confirmation point for counting job run beginning and end.Conveying objects start
When by test point A, optoelectronic switch 4A is low level by high level jump, starts a new counting operational process, works as transmission
When object leaves test point A, optoelectronic switch 4A is high level by low level jump, terminates a counting operational process, and according to
Counting control unit carries out accumulated counts to the operation and processing of detection data.
For accurate metering, the datum length M of single-piece detection object is setBenchmarkAnd insignificant distracter time span；Separately
Outside, the restrictive job requirements of setting are: when transmitting operation, toward transmission belt on place conveying objects when must to be placed
First transmission object and second between maintain a certain distance, i.e., be not connected with each other with object behind.
The setting of the distracter time span: it in each individual counting operation, is passed when completing first single-piece
When the counting of defeated object, counting control unit measures transmission belt from first test point to the time numerical value of second test point,
According to 12% t set automatically inside counting control unit0Relationship, wherein t0 For the specification type in each counting operation
First conveying objects passes through the t measured when optoelectronic switch0Value, calculates a period numerical value, is arranged as basic parameter
In counting control unit, in this, as the interference time length detected.
Set the length of minimum gauge conveying objects in the distance between two couples of optoelectronic switches 4A, 4B L≤detection zone ×
(1- γ), γ are the penalty coefficient for influencing packed object length measurement factor, value range 0.15-0.3.
The MBenchmarkFor first five single object measured in each counting operation detection length average value as base
Standard length is set in counting control unit.
The conveying objects datum length MBenchmarkDetermination: according to the restrictive job requirements of the setting, in each meter
In number operation, first conveying objects of detected each specification type are single-pieces.According to first conveying objects by pair
Its potential change situation when emitting optoelectronic switch 4A, 4B identifies conveying objects by counting control unit and carries out accumulated counts,
Meanwhile according to MIt surveys=L1+(L1/t0) * t1 0Calculate the detection length M of the objectIt surveys, biography as the next detection of determination
The datum length M of defeated physical quantitiesBenchmark.After detecting first conveying objects, counting control unit calculates currently automatically
The average detected length of all single objects detected is as datum length MBenchmark, to determine the quantity of next conveying objects.
Such as, after counting control unit detects third part conveying objects, counting control unit calculates two currently detected automatically
The average detected length of part single object is as datum length MBenchmark, to determine the quantity of third conveying objects.Such as, control is counted
After unit processed detects the 4th conveying objects, counting control unit calculates the third part single-piece object currently detected automatically
The length of body and the average detected length of preceding two pieces object are average again, as datum length MBenchmark, to determine the 4th conveying objects
Quantity.And so on, until the average detected length of first five single object is calculated, as datum length MBenchmarkAutomatically it sets
Set the underlying parameter for determining detection conveying objects quantity in counting control unit as after.Control unit is set in automatic detection
Determine MBenchmarkIn the process, when so that the accumulated quantity that last time obtains when detecting being more than 5, then accumulative by this due to there is even bag
Quantity calculates single-piece detection object average length as datum length MBenchmark。
MIt surveys=L+(L/t0) * t1 0, in which:
t0It is conveying objects from test point A to the transmission time of test point B；
t1 0When passing through for conveying objects, before optoelectronic switch 4A generates second of level jump, conveying objects are opened by photoelectricity
Close the transmission time of 4B；
t1 0 And t0It detects to obtain according to the time of optoelectronic switch level jump by counting control unit.
Thus it obtains, quantity η=M of conveying objectsIt surveys/MBenchmark, wherein MBenchmarkFor the transmission object set in counting control unit
The datum length of body, MIt surveysFor the actually detected length value of conveying objects；η is integer, and it is as follows to be rounded rule:
1) when the integer part of fractional part >=0.43, η of η adds 1, fractions omitted part；
2) as the fractional part < 0.43 of η, the integer part of η is constant, fractions omitted part.
The foregoing is merely preferred embodiments of the invention, are not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of count detection method of belt conveyor, it is characterised in that: in the upper of the transmission belt two sides of belt conveyor
Two pairs of correlation type optoelectronic switches of interval setting, each pair of optoelectronic switch are in penetrating position, optoelectronic switch and tally control on frame
Unit connection, two pairs of optoelectronic switches are detected to by the conveying objects of detection zone simultaneously, according to two detection location points
The distance between and conveying objects the average transmission speed of transmission belt is measured by the time of corresponding test point, according to conveying objects
The actually detected length M of conveying objects is calculated in the runing time of each test pointIt surveys, the above conveying objects are multiple single-piece objects
Body, according to η=MIt surveys/MBenchmark, obtain the quantity η of single object, in which: the MIt surveys=L+(L/t0) * t1 0, in which:
t0Transmission time for the single object in each counting operation from first pair of optoelectronic switch to second pair of optoelectronic switch；
t1 0When passing through for single object, before first pair of optoelectronic switch generates second of level jump, single object passes through second
To the transmission time of optoelectronic switch；
t1 0 And t0It detects to obtain according to the time of optoelectronic switch level jump by counting control unit；
MBenchmarkFor first five single object measured in each counting operation detection length average value as datum length,
It is set in counting control unit；
L is the distance between two pairs of correlation type optoelectronic switches.
2. the count detection method of belt conveyor according to claim 1, it is characterised in that: two pairs of correlation type light
The length of minimum gauge conveying objects × (1- γ) in the distance between electric switch L≤detection zone, γ is penalty coefficient, is taken
Value range is 0.15-0.3.
3. the count detection method of belt conveyor according to claim 1, it is characterised in that: the number of the conveying objects
Measure η=MIt surveys/MBenchmark, η is integer, it is as follows to be rounded rule:
1) when the integer part of fractional part >=0.43, η of η adds 1, fractions omitted part；
2) as the fractional part < 0.43 of η, the integer part of η is constant, fractions omitted part.
4. the count detection method of belt conveyor according to claim 1, it is characterised in that: in counting control unit
In, corresponding interference time length is set and is ignored, with exclusive PCR because prime implicant is to the shadow of detection and the identification of conveying objects
It rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610813722.8A CN106250977B (en) | 2016-09-09 | 2016-09-09 | A kind of count detection method of belt conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610813722.8A CN106250977B (en) | 2016-09-09 | 2016-09-09 | A kind of count detection method of belt conveyor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106250977A CN106250977A (en) | 2016-12-21 |
| CN106250977B true CN106250977B (en) | 2019-01-08 |
Family
ID=57599884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610813722.8A Active CN106250977B (en) | 2016-09-09 | 2016-09-09 | A kind of count detection method of belt conveyor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106250977B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107220701B (en) * | 2017-06-19 | 2020-12-08 | 上海风偃自动化科技有限公司 | Accurate counting detection method for belt conveying bagged objects |
| CN107434076B (en) * | 2017-09-12 | 2019-07-26 | 江苏牧羊控股有限公司 | A kind of packet number statistical method of quantitative bag type package material |
| KR20210025404A (en) * | 2019-08-27 | 2021-03-09 | 주식회사 엘지화학 | Thickness measurement apparatus and thickness measurement apparatus for unit cell |
| CN111438070A (en) * | 2020-04-16 | 2020-07-24 | 扬州大学 | Fruit grain size classification equipment |
| CN112906851B (en) * | 2021-03-24 | 2023-09-19 | 中国兵器装备集团自动化研究所有限公司 | Counting method based on segment proportion jump threshold judgment |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381547A (en) * | 2011-09-15 | 2012-03-21 | 武汉武大卓越科技有限责任公司 | Online conveyor belt monitoring system and application method thereof |
| CN202693600U (en) * | 2012-07-02 | 2013-01-23 | 江汉大学 | Photoelectric counter |
| US20130313169A1 (en) * | 2011-02-02 | 2013-11-28 | Laitram, L.L.C. | System and method for grading articles and selectively mixing graded articles |
| CN204085484U (en) * | 2014-09-30 | 2015-01-07 | 武汉钢铁(集团)公司 | Belt of belt conveyor length-measuring appliance |
| US20150008097A1 (en) * | 2012-01-31 | 2015-01-08 | Andrea Andreoli | Monitoring system for measuring speed and elongation of transport chains |
| CN105825266A (en) * | 2016-05-22 | 2016-08-03 | 福建福贞金属包装有限公司 | Aluminum product two-piece can quantitative line control method |
| CN205418225U (en) * | 2015-12-15 | 2016-08-03 | 上海小松包装机械有限公司 | Automatics is separated to count |
| CN105911607A (en) * | 2016-06-08 | 2016-08-31 | 兰州兰石集团有限公司 | Object moving and moving direction sensor |
| CN205526182U (en) * | 2016-02-26 | 2016-08-31 | 佛山市高明鸿源纸业有限公司 | Dull and stereotyped wrapper conveyor of modified |
-
2016
- 2016-09-09 CN CN201610813722.8A patent/CN106250977B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130313169A1 (en) * | 2011-02-02 | 2013-11-28 | Laitram, L.L.C. | System and method for grading articles and selectively mixing graded articles |
| CN102381547A (en) * | 2011-09-15 | 2012-03-21 | 武汉武大卓越科技有限责任公司 | Online conveyor belt monitoring system and application method thereof |
| US20150008097A1 (en) * | 2012-01-31 | 2015-01-08 | Andrea Andreoli | Monitoring system for measuring speed and elongation of transport chains |
| CN202693600U (en) * | 2012-07-02 | 2013-01-23 | 江汉大学 | Photoelectric counter |
| CN204085484U (en) * | 2014-09-30 | 2015-01-07 | 武汉钢铁(集团)公司 | Belt of belt conveyor length-measuring appliance |
| CN205418225U (en) * | 2015-12-15 | 2016-08-03 | 上海小松包装机械有限公司 | Automatics is separated to count |
| CN205526182U (en) * | 2016-02-26 | 2016-08-31 | 佛山市高明鸿源纸业有限公司 | Dull and stereotyped wrapper conveyor of modified |
| CN105825266A (en) * | 2016-05-22 | 2016-08-03 | 福建福贞金属包装有限公司 | Aluminum product two-piece can quantitative line control method |
| CN105911607A (en) * | 2016-06-08 | 2016-08-31 | 兰州兰石集团有限公司 | Object moving and moving direction sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106250977A (en) | 2016-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106250977B (en) | A kind of count detection method of belt conveyor | |
| CN107220701A (en) | The accurate metering detection method of the packed object of belt transport | |
| CA2990979C (en) | Method and apparatus for determining a specific energy consumption of belt conveyors | |
| KR101351494B1 (en) | Conveyor device | |
| Karimi et al. | A practical approach to comparative design of non-contact sensing techniques for seed flow rate detection | |
| CN106000893A (en) | Weighing, scanning and body measuring trinity machine | |
| EP1956335A3 (en) | Velocity measurement using manetoresistive sensors | |
| US20170115145A1 (en) | Milk meter | |
| CN108254281B (en) | Online detection method and device for material moisture rate of belt conveyor | |
| CN206955127U (en) | One kind can accurate proportioner | |
| CN106228231B (en) | Belt conveyor different size object batch loads in mixture the count detection method of transmission | |
| CN108426806A (en) | particulate matter measuring apparatus and its operating method | |
| CN112833983B (en) | Coal quantity detection method based on laser scanning | |
| CN106605614A (en) | Automatic hatching egg sorting machine | |
| CN104880242B (en) | The caliberating device and method of double carrier belted electronic balances | |
| CN105789076B (en) | Point measurement machine fault distinguishing method | |
| FI20166015L (en) | APPARATUS AND METHOD OF MEASURING AIR FLOW | |
| CN106940176B (en) | A kind of thickness of feed layer detection device and method | |
| CN209085745U (en) | Burden balance inspection platform | |
| CN207512465U (en) | Leader's length monitoring device | |
| CN110146707A (en) | Online material moisture measuring system and method | |
| CN206421437U (en) | The counting and detecting device of belt conveyor | |
| CN107881750B (en) | Collar and sleeve length monitoring method and device | |
| CN106334673B (en) | The online pipe tobacco of X-ray or smoke box impurity identify, reject and its count weight detection device | |
| JP2007014848A (en) | Weight type sorting apparatus and its sorting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |