CN110455830A - A kind of online microwave moisture monitor - Google Patents
A kind of online microwave moisture monitor Download PDFInfo
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- CN110455830A CN110455830A CN201910692442.XA CN201910692442A CN110455830A CN 110455830 A CN110455830 A CN 110455830A CN 201910692442 A CN201910692442 A CN 201910692442A CN 110455830 A CN110455830 A CN 110455830A
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- Prior art keywords
- microwave
- shell
- online
- moisture content
- measured medium
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
- G01N22/04—Investigating moisture content
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a kind of online microwave moisture monitor, including shell, it is provided with Microwave emission end in the one side wall of shell, microwave receiving end is provided on the side wall of opposite side, the hollow cavity of shell passes through for cereal.The present invention detects cereal moisture content using microwave principle, emit microwave signal to measured medium by Microwave emission-reception system, the signal is constantly transmitted and is reflected to form propagation circuit in the surrounding of measured medium, by calculating the time difference come back propagation, that is picosecond time difference method, calculate the moisture content of measured medium through the processing unit again, detection accuracy is high.
Description
Technical field
The present invention relates to grain-drying technical fields, and in particular to a kind of online microwave moisture content monitoring of grain drier
Instrument.
Background technique
As grain-production and consumption big country, the production and preservation of crops are particularly important for China.By 2017
Year, China's grain drying device mechanization degree is still less than 20%, loss caused by drying not in time after receiving every year because of grain
Up to hundred million yuan of 300-400.With economic development, market awakening and the promotion of government, especially grain drying device in 2011
Since being put into national the allowance for purchasing agricultural machinery register and enjoying emphasis subsidy, grain drying device industry obtains quick development
Progress.
During grain heat-drying, a most important ring is exactly the moisture content for detecting grain, by constantly to the water of grain
Part is detected, to remove the hot blast temperature and degree of drying of determining drying machine.In the prior art, generally pacify on drying machine
Equipped with moisture teller, with the moisture content situation of grain in real-time detection drying machine, but moisture teller currently on the market is mostly resistance-type water
Part instrument, the precision of moisture content detection is not high after being applied on drying machine, this causes to the intelligent control of drying machine and seriously affects.
Summary of the invention
The present invention provides a kind of online microwave moisture monitor, carries out moisture content real-time monitoring, raising pair using microwave principle
The precision of grain moisture content detection.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of online microwave moisture monitor, including shell
Body is provided with Microwave emission end in the one side wall of shell, microwave receiving end, the hollow cavity of shell is provided on the side wall of opposite side
Pass through for cereal.
Further, the Microwave emission end is connected with Microwave emission unit, and microwave receiving end is connected with processing unit.
Further, the Microwave emission unit and processing unit are integrated in control cabinet.
Further, display panel is additionally provided on a side surface of the control cabinet, processing unit will be from microwave receiving
Moisture content signal is converted into after the signal processing that end receives to show on a display panel.
Beneficial effect by adopting the above technical scheme is:
1, the present invention detects cereal moisture content using microwave principle, by Microwave emission-reception system to tested Jie
Matter emits microwave signal, which is constantly transmitted and reflected to form propagation circuit in the surrounding of measured medium, pass through meter
The time difference for carrying out back propagation, i.e. picosecond time difference method are calculated, then calculates the moisture content of measured medium through the processing unit, detection essence
Degree is high.
2, it using microwave measurement medium moisture content, is not limited by factors such as measured medium type and density, with measured medium
Whether it is that dielectric constant and density are unrelated, is influenced by extraneous factor smaller.
3, in online microwave moisture teller of the invention, cereal slow transits through in the hollow cavity of shell, can supervise in real time
Survey the water fraction data of cereal in drying machine operation process.
Detailed description of the invention
Fig. 1 is structure principle chart of the invention.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing.
A kind of online microwave moisture monitor, including shell 10 are provided with Microwave emission end 11 in the one side wall of shell 10,
Microwave receiving end 12 is provided on the side wall of opposite side, the hollow cavity 13 of shell 10 passes through for cereal.Core of the invention is to adopt
Cereal moisture content is detected with microwave principle, microwave signal, the letter are emitted to measured medium by Microwave emission-reception system
Number propagation circuit is constantly transmitted and is reflected to form in the surrounding of measured medium, by calculating the time difference come back propagation
Value, i.e. picosecond time difference method, then the moisture content of measured medium is calculated through the processing unit, detection accuracy is high.
Further, the Microwave emission end 11 is connected with Microwave emission unit, microwave receiving end 12 and processing unit phase
Even；The Microwave emission unit and processing unit are integrated in control cabinet 20.
Further, display panel 21 is additionally provided on a side surface of the control cabinet 20, processing unit will be from microwave
Moisture content signal is converted into after the signal processing that receiving end 12 receives to be shown on display panel 21.Receive detection by control cabinet 20
To signal and be processed into digital signal and be shown in display panel 21, allow user to be capable of the water of the more understanding cereal of intuitive and convenient
Part data.When it is implemented, the data-signal of the microwave moisture teller can be connected in dry machine control system, to dry
Machine is according to the real-time conditioning hot blast temperature of cereal, to reach best drying effect.
Claims (4)
1. a kind of online microwave moisture monitor, it is characterised in that: including shell (10), be provided in the one side wall of shell (10)
Microwave emission end (11) is provided with microwave receiving end (12) on the side wall of opposite side, and the hollow cavity (13) of shell (10) is for cereal
Pass through.
2. a kind of online microwave moisture monitor according to claim 1, it is characterised in that: the Microwave emission end (11)
It is connected with Microwave emission unit, microwave receiving end (12) are connected with processing unit.
3. a kind of online microwave moisture monitor according to claim 2, it is characterised in that: the Microwave emission unit and
Processing unit is integrated in control cabinet (20).
4. a kind of online microwave moisture monitor according to claim 3, it is characterised in that: the one of the control cabinet (20)
It is additionally provided on side surface display panel (21), processing unit will be converted into after the signal processing that microwave receiving end (12) receive
Moisture content signal is shown on display panel (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910692442.XA CN110455830A (en) | 2019-07-30 | 2019-07-30 | A kind of online microwave moisture monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910692442.XA CN110455830A (en) | 2019-07-30 | 2019-07-30 | A kind of online microwave moisture monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110455830A true CN110455830A (en) | 2019-11-15 |
Family
ID=68483918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910692442.XA Pending CN110455830A (en) | 2019-07-30 | 2019-07-30 | A kind of online microwave moisture monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110455830A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2844909Y (en) * | 2005-06-05 | 2006-12-06 | 李国文 | Grain moisture content fast detecting instrument |
| CN205449832U (en) * | 2015-12-25 | 2016-08-10 | 安徽苜邦农业装备有限公司 | Online moisture monitoring mechanism of grain drying-machine |
| CN109632834A (en) * | 2019-01-23 | 2019-04-16 | 浙江大学 | A kind of cereal moisture percentage measurement method based on microwave swept frequency technology |
-
2019
- 2019-07-30 CN CN201910692442.XA patent/CN110455830A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2844909Y (en) * | 2005-06-05 | 2006-12-06 | 李国文 | Grain moisture content fast detecting instrument |
| CN205449832U (en) * | 2015-12-25 | 2016-08-10 | 安徽苜邦农业装备有限公司 | Online moisture monitoring mechanism of grain drying-machine |
| CN109632834A (en) * | 2019-01-23 | 2019-04-16 | 浙江大学 | A kind of cereal moisture percentage measurement method based on microwave swept frequency technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191115 |
|
| WD01 | Invention patent application deemed withdrawn after publication |