CN103954655A - Apparatus for online automatic detection of water content of dried rice through resistivity method - Google Patents
Apparatus for online automatic detection of water content of dried rice through resistivity method Download PDFInfo
- Publication number
- CN103954655A CN103954655A CN201410124115.1A CN201410124115A CN103954655A CN 103954655 A CN103954655 A CN 103954655A CN 201410124115 A CN201410124115 A CN 201410124115A CN 103954655 A CN103954655 A CN 103954655A
- Authority
- CN
- China
- Prior art keywords
- chip microcomputer
- paddy rice
- circuit
- signal output
- connects
- 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.)
- Pending
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses an apparatus for the online automatic detection of the water content of dried rice through a resistivity method. The apparatus comprises a one-chip microcomputer, a rice crushing mechanism and a temperature sensor, the rice crushing mechanism is connected with a precise micromotor, the precise micromotor is connected with the signal output end of a control circuit, the signal input end of the control circuit is connected with the one-chip microcomputer, an resistance value detection circuit is arranged at one side of the rice crushing mechanism, the signal output end of the resistance value detection circuit is connected with a comparison operation circuit, the signal output end of the comparison operation circuit is connected with an A/D conversion circuit, the signal output end of the A/D conversion circuit is connected with the one-chip microcomputer, the temperature sensor is connected with the one-chip microcomputer through a temperature compensation circuit, and the one-chip microcomputer is connected with a button and a super bright nixie tube. The apparatus has the advantages of high precision, small size, simple debugging and convenient maintenance.
Description
technical field
The present invention relates to on-line measuring device field, be specifically related to one and utilize paddy rice internal moisture information to there is obvious resistance characteristic, realize paddy rice and dry moisture electric-resistivity method on-line automatic detection device.
Background technology
It is most important link in machine drying course that paddy rice moisture on-line detects automatically, it is the important indicator that must detect in grain storage, purchase, processing link, as met overcast and rainy intermittent drizzles in the rainy season weather harvest time, cause wet paddy to have little time to dry and maybe cannot reach safe moisture content, thereby produce the germination of going mouldy, cause heavy losses can to peasant household and national food safety margin.
Paddy rice moisture detecting method can be divided into Non-Destructive Testing and damage detection.Non-Destructive Testing does not destroy cereal self proterties, measures moisture by its physics, optics and chemical characteristic; Damaging detection needs cereal to carry out physical crushing or make it that chemical change and can not keep original state occur.，
Lossless detection method mainly comprises following several: capacitance method, infrared dehydration method, microwave heating method, high-frequency resistance method, acoustic method, nuclear magnetic resonance method, rays method and NEUTRON METHOD etc.
Damaging detection method mainly comprises following several: Oven Method, rapid weight loss method, hypobaric drying method, DC resistance method, toluene distillation method, karl Fischer method etc.
From above method, capacitance method structure is relatively simple, low price.Shortcoming is that temperature influence is large, and cannot detect online high moisture grain.Except DC resistance method, other testing costs are high, and the online moisture that is difficult to applicable dryer detects automatically.
Summary of the invention
For existing technology Shortcomings, the invention provides a kind of paddy rice and dry moisture electric-resistivity method on-line automatic detection device, measuring accuracy is high, and volume is little, and debugging is simple, maintains easily and maintains.
Technical scheme of the present invention is achieved in that
Paddy rice is dried moisture electric-resistivity method on-line automatic detection device, it is characterized in that: include single-chip microcomputer, paddy rice is pulverized mechanism, temperature sensor, paddy rice is pulverized mechanism and connects accurate micromotor, accurate micromotor connects the signal output part of control circuit, the signal input part of control circuit connects single-chip microcomputer, the side that paddy rice is pulverized mechanism is provided with resistance value testing circuit, the signal output part of resistance value testing circuit connects comparison operation circuit, the signal output part of comparison operation circuit connects A/D change-over circuit, the signal output part of A/D change-over circuit connects single-chip microcomputer, temperature sensor connects single-chip microcomputer by temperature-compensation circuit, single-chip microcomputer connects button, superbright charactron.
Described paddy rice is dried moisture electric-resistivity method on-line automatic detection device, it is characterized in that: described paddy rice is pulverized mechanism and includes two mullers, wherein, the toothed gearing that initiatively muller top is connected with accurate micromotor is employing brass and nylon material is compound makes, there is precision high, wear-resisting strong and good insulating property, have improved stability and the reliability of muller.
Described paddy rice is dried moisture electric-resistivity method on-line automatic detection device, it is characterized in that: on two described mullers, be separately installed with an electrode, two electrodes are connected with the signal input part of resistance value testing circuit.
Principle of work of the present invention is:
Paddy rice of the present invention is dried moisture electric-resistivity method on-line automatic detection device, first the paddy rice falling by cycling mechanism is delivered to hoister bottom, the paddy rice that hoister winnowing pan feeding is splashed, falls in the material collecting box of Moisture Meter, utilizes method for designing timely to determine specimen sample scheme.Obtain paddy rice internal moisture information by pulverizing mechanism, deliver to comparison operation circuit analysis, present linear theory according to the logarithm of resistance and water cut are approximate, then carry out change-over circuit analog quantity is transferred to digital quantity, deliver to single-chip microcomputer and process and computing.In processing procedure, by the real-time measurement to environment temperature, once the impact of resistance being equivalent to its amount of moisture according to temperature liter increases by 0.11% theory, adds temperature compensation, improves measuring accuracy.Afterwards measured moisture figure is shown by superbright number, can select the moisture figure needing to operate by button, in addition, single-chip microcomputer sends instruction to control circuit, accurate micromotor is reversed or forward chronologically, or stop, to pulverizing the control of mechanism, thereby realize paddy rice and dry the device of moisture electric-resistivity method online automatic detection.
Advantage of the present invention is:
Measuring accuracy of the present invention is high, and volume is little, and debugging is simple, maintains easily and maintains.
Brief description of the drawings
Fig. 1 is structured flowchart of the present invention.
Fig. 2 is the one-piece construction schematic diagram that paddy rice is pulverized mechanism.
Fig. 3 is the planimetric map that paddy rice is pulverized the muller of mechanism.
Embodiment
As Fig. 1, 2, shown in 3, paddy rice is dried moisture electric-resistivity method on-line automatic detection device, include single-chip microcomputer 1, paddy rice is pulverized mechanism 2, temperature sensor 3, paddy rice is pulverized mechanism 2 and connects accurate micromotor 4, accurate micromotor 4 connects the signal output part of control circuit 5, the signal input part of control circuit 5 connects single-chip microcomputer 1, the side that paddy rice is pulverized mechanism 2 is provided with resistance value testing circuit 6, the signal output part of resistance value testing circuit 6 connects comparison operation circuit 7, the signal output part of comparison operation circuit 7 connects A/D change-over circuit 8, the signal output part of A/D change-over circuit 8 connects single-chip microcomputer 1, temperature sensor 3 connects single-chip microcomputer 1 by temperature-compensation circuit 9, single-chip microcomputer 1 connects button 10, superbright charactron 11.
Paddy rice is pulverized mechanism 2 and includes two mullers 12, the toothed gearing that initiatively muller 12 tops are connected with accurate micromotor 4 is employing brass and nylon material is compound makes, have precision high, wear-resisting strong and good insulating property, have improved stability and the reliability of muller.
On two mullers 12, being separately installed with 13, two electrodes 13 of an electrode is connected with the signal input part of resistance value testing circuit 6.
Utilize paddy rice internal moisture information, there is obvious resistance characteristic, realize paddy rice and dry moisture electric-resistivity method on-line automatic detection device, first the paddy rice falling by cycling mechanism is delivered to hoister bottom, the paddy rice that hoister winnowing pan feeding is splashed, fall in the material collecting box of Moisture Meter, utilize method for designing timely to determine specimen sample scheme.Obtain paddy rice internal moisture information by pulverizing mechanism, deliver to comparison operation circuit analysis, present linear theory according to the logarithm of resistance and water cut are approximate, then carry out change-over circuit analog quantity is transferred to digital quantity, deliver to single-chip microcomputer and process and computing.In processing procedure, by the real-time measurement to environment temperature, once the impact of resistance being equivalent to its amount of moisture according to temperature liter increases by 0.11% theory, adds temperature compensation, improves measuring accuracy.Afterwards measured moisture figure is shown by superbright number, can select the moisture figure needing to operate by key-press input, in addition, single-chip microcomputer sends instruction to control circuit, accurate micromotor is reversed or forward chronologically, or stop, to pulverizing the control of mechanism, dry moisture electric-resistivity method online automatic detection thereby realize paddy rice.
As Fig. 2,3, realize real-time detected resistance:
Single-chip microcomputer 1 is controlled accurate micromotor 4 by control circuit 5 and is started working, and altogether in 95 seconds, automatically completes and detects moisture content value.Concrete: 2 seconds start, and within 15 seconds, two mullers upwards turn round, and remove on muller and crack rice, within 2 seconds, shut down, within 7 seconds, two mullers turn round downwards, roll remnants and crack rice, and within 8 seconds, shut down, and starting resistance value testing circuit, electrifying electrodes on two mullers, in 62 seconds, two downward runnings of muller constantly roll paddy rice, and measure the resistance of cracking rice in real time, after countdown finishes for 62 seconds, system shows moisture value.
In the time that moisture content value is above higher than numerical value+1.1% of setting, each hour of system detected once.
In the time that moisture content value is following lower than numerical value+1.0% of setting, system detection in every ten minutes once.
In the time that moisture content value reaches the numerical value of setting, system detects secondary-confirmation, and drying procedure stops.
Claims (3)
1. paddy rice is dried moisture electric-resistivity method on-line automatic detection device, it is characterized in that: include single-chip microcomputer, paddy rice is pulverized mechanism, temperature sensor, paddy rice is pulverized mechanism and connects accurate micromotor, accurate micromotor connects the signal output part of control circuit, the signal input part of control circuit connects single-chip microcomputer, the side that paddy rice is pulverized mechanism is provided with resistance value testing circuit, the signal output part of resistance value testing circuit connects comparison operation circuit, the signal output part of comparison operation circuit connects A/D change-over circuit, the signal output part of A/D change-over circuit connects single-chip microcomputer, temperature sensor connects single-chip microcomputer by temperature-compensation circuit, single-chip microcomputer connects button, superbright charactron.
2. paddy rice according to claim 1 is dried moisture electric-resistivity method on-line automatic detection device, it is characterized in that: described paddy rice is pulverized mechanism and includes two mullers, wherein, the toothed gearing that initiatively muller top is connected with accurate micromotor is employing brass and nylon material is compound makes.
3. paddy rice according to claim 1 and 2 is dried moisture electric-resistivity method on-line automatic detection device, it is characterized in that: on two described mullers, be separately installed with an electrode, two electrodes are connected with the signal input part of resistance value testing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410124115.1A CN103954655A (en) | 2014-03-28 | 2014-03-28 | Apparatus for online automatic detection of water content of dried rice through resistivity method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410124115.1A CN103954655A (en) | 2014-03-28 | 2014-03-28 | Apparatus for online automatic detection of water content of dried rice through resistivity method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103954655A true CN103954655A (en) | 2014-07-30 |
Family
ID=51331959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410124115.1A Pending CN103954655A (en) | 2014-03-28 | 2014-03-28 | Apparatus for online automatic detection of water content of dried rice through resistivity method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103954655A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713910A (en) * | 2015-02-17 | 2015-06-17 | 合肥艾瑞德电气有限公司 | Resistive grain moisture measurement system |
| CN104833706A (en) * | 2015-05-26 | 2015-08-12 | 厦门理工学院 | Bamboo charcoal carburization degree testing device |
| CN105651950A (en) * | 2016-02-23 | 2016-06-08 | 南京三喜农机股份有限公司 | Grain moisture detecting device |
| CN107037086A (en) * | 2017-05-31 | 2017-08-11 | 合肥艾瑞德电气有限公司 | A kind of resistance-type moisture analyser |
| CN107171617A (en) * | 2017-05-31 | 2017-09-15 | 合肥艾瑞德电气有限公司 | Motor control method and system in a kind of moisture analyser |
| CN107238632A (en) * | 2017-05-31 | 2017-10-10 | 合肥艾瑞德电气有限公司 | A kind of detecting system of resistance-type moisture analyser |
| CN111102830A (en) * | 2019-12-23 | 2020-05-05 | 佛冈明阳机械有限公司 | Grain moisture drying method, system, device and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2052535U (en) * | 1988-03-26 | 1990-02-07 | 天津大学 | Detector for digit display humidity of grain |
| JPH09119908A (en) * | 1995-10-25 | 1997-05-06 | Kaneko Agricult Mach Co Ltd | Instrument for measuring water content of grains |
| CN102426177A (en) * | 2011-09-07 | 2012-04-25 | 郑宜金 | Cereal on-line moisture automatic tester |
| CN203908986U (en) * | 2014-03-28 | 2014-10-29 | 合肥麦稻之星机械科技股份有限公司 | Automatic on-line detection device for dried rice moisture content with resistance method |
-
2014
- 2014-03-28 CN CN201410124115.1A patent/CN103954655A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2052535U (en) * | 1988-03-26 | 1990-02-07 | 天津大学 | Detector for digit display humidity of grain |
| JPH09119908A (en) * | 1995-10-25 | 1997-05-06 | Kaneko Agricult Mach Co Ltd | Instrument for measuring water content of grains |
| CN102426177A (en) * | 2011-09-07 | 2012-04-25 | 郑宜金 | Cereal on-line moisture automatic tester |
| CN203908986U (en) * | 2014-03-28 | 2014-10-29 | 合肥麦稻之星机械科技股份有限公司 | Automatic on-line detection device for dried rice moisture content with resistance method |
Non-Patent Citations (2)
| Title |
|---|
| 万志强: "《基于ATmega128单片机的粮食水分测量仪控制***的硬件设计和研发》", 《粮食加工》 * |
| 刘哲: "粮食水分在线检测仪的研究", 《中国优秀硕士学位论文全文数据库 农业科技辑》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713910A (en) * | 2015-02-17 | 2015-06-17 | 合肥艾瑞德电气有限公司 | Resistive grain moisture measurement system |
| CN104833706A (en) * | 2015-05-26 | 2015-08-12 | 厦门理工学院 | Bamboo charcoal carburization degree testing device |
| CN104833706B (en) * | 2015-05-26 | 2018-02-02 | 厦门理工学院 | A kind of bamboo charcoal carbonizing degree test device |
| CN105651950A (en) * | 2016-02-23 | 2016-06-08 | 南京三喜农机股份有限公司 | Grain moisture detecting device |
| CN105651950B (en) * | 2016-02-23 | 2017-12-22 | 南京三喜农机股份有限公司 | A kind of device for detecting grain moisture |
| CN107037086A (en) * | 2017-05-31 | 2017-08-11 | 合肥艾瑞德电气有限公司 | A kind of resistance-type moisture analyser |
| CN107171617A (en) * | 2017-05-31 | 2017-09-15 | 合肥艾瑞德电气有限公司 | Motor control method and system in a kind of moisture analyser |
| CN107238632A (en) * | 2017-05-31 | 2017-10-10 | 合肥艾瑞德电气有限公司 | A kind of detecting system of resistance-type moisture analyser |
| CN111102830A (en) * | 2019-12-23 | 2020-05-05 | 佛冈明阳机械有限公司 | Grain moisture drying method, system, device and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103954655A (en) | Apparatus for online automatic detection of water content of dried rice through resistivity method | |
| CN104198537B (en) | A kind of soil moisture content and conductivity detection method and detection device | |
| CN103822935B (en) | The quick analytic instrument of heavy metal cadmium and analytical approach in a kind of non-destructive determination food | |
| CN203908986U (en) | Automatic on-line detection device for dried rice moisture content with resistance method | |
| CN104713910A (en) | Resistive grain moisture measurement system | |
| CN103808766A (en) | Online resistance type device and online resistance type method for measuring water of grain | |
| CN103424295A (en) | Tobacco leaf brittleness detection method | |
| CN102393408A (en) | Capacitive detector for moisture content of straw | |
| CN205484176U (en) | Portable grain water content measurement appearance | |
| CN103211008A (en) | On-line resistance-type grain moisture tester and control method thereof | |
| CN101571468B (en) | Automatic detector for textural properties of hardness and viscosity of cooked rice grains | |
| CN201653954U (en) | Lumber drying process parameter automatic detection device | |
| WO2020037877A1 (en) | Automatic sampling and analysis system for biomass fuel | |
| CN103698540B (en) | Rapid determination method and device for ash content in lignocellulosic biomass fuel | |
| CN204203025U (en) | A kind of solids content detector | |
| CN108225970A (en) | The detection device and detection method of solid content in high concentrated liquid | |
| Wang et al. | Design of moisture content detection system | |
| Liu et al. | Research on online moisture detector in grain drying process based on V/F conversion | |
| CN203101213U (en) | Rapid moisture detector | |
| CN205808983U (en) | Kiln on-line checking moisture content analyser | |
| CN203688395U (en) | Universal type aggregate density measuring device | |
| CN102650607B (en) | A kind of method and apparatus measuring moisture content of aerobic fermentation material | |
| CN203688393U (en) | Coal slurry concentration analysis meter | |
| CN107589083B (en) | Atomic absorption spectrometer for simultaneously detecting lead and cadmium elements in grains and detection method | |
| CN206740574U (en) | A kind of general cylinder head cover carbonated drink test machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160720 Address after: Shenyang road in Baohe District of Hefei city of Anhui Province, No. 17 233000 Applicant after: Hefei rice Star Machinery Co., Ltd. Address before: Three road 230051 in Anhui Province in Baohe District of Hefei City No. 17 weft Applicant before: HEFEI WHEAT AND RICE STAR MACHINERY CO., LTD. |
|
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140730 |
|
| RJ01 | Rejection of invention patent application after publication |