CN202886316U - Device for sampling and testing moisture content of grain - Google Patents
Device for sampling and testing moisture content of grain Download PDFInfo
- Publication number
- CN202886316U CN202886316U CN 201220600266 CN201220600266U CN202886316U CN 202886316 U CN202886316 U CN 202886316U CN 201220600266 CN201220600266 CN 201220600266 CN 201220600266 U CN201220600266 U CN 201220600266U CN 202886316 U CN202886316 U CN 202886316U
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- type capacitive
- cereal
- capacitive transducer
- pin type
- tested
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Abstract
The utility model relates to a device for sampling and testing moisture content of a grain. The device comprises a seal cover 1, a grain container 2, a display module 4, a button module 6 and a tested grain 7 and further comprises a needle-type capacitive sensor 3 and a measuring circuit 5. The needle-type capacitive sensor 3 comprises a stainless steel metal wire 8, a copper circular tube 9, a shielding casing tube 10, a connection head 11 and a high frequency insulating material 12. The measuring circuit 5 comprises an oscillating circuit and a frequency measurement instrument, wherein the oscillating circuit consists of an IC (integrated circuit) 555, and the frequency measurement instrument consists of a single chip microcomputer. The connecting head 11 of the needle-type capacitive sensor 3 is connected with the input end of the measuring circuit 5. The output end of the IC555 is connected with a frequency measurement pin of the single chip microcomputer. A data pin of the single chip microcomputer is connected with the display module 4. The moisture content of the tested grain 7 is displayed by the display module 4. The button module 6 comprises a measurement button and a zero clearing button. The device is wide in measuring range, simple in measurement principle, high in sensitivity, convenient to use, demarcate, and sample-test, and low in measuring cost, and can not damage the tested grain.
Description
Technical field
The utility model relates to a kind of grain moisture content measurement mechanism, especially a kind of device of taking a sample test cereal moisture percentage.
Background technology
The water cut of cereal is the key factor of quality assurance in cereal storage and the process, detecting cereal moisture percentage is the important means that guarantees correct water cut, the detection of existing cereal moisture percentage mainly is oven dry weight method, Microwave Water sorting-detecting instrument, infrared ray moisture detector, nuclear magnetic resonance method and neutron degradation method, resistance or condenser type moisture detector are also arranged, said method all exists measures that cost is high, measurement range is limited, is unsuitable for peasant household and uses; What existing capacitance method was used is board-like capacitive transducer, because the design feature of itself causes its application to have certain limitation, is that pin type and metering circuit can effectively address the above problem by improving existing capacitive transducer.
Summary of the invention
The utility model provides a kind of device of taking a sample test cereal moisture percentage, and measurement range is wide, highly sensitive, be convenient to take a sample test cereal, do not damage and takes a sample test cereal.
The technical scheme that solves the utility model technical matters is: a kind of device of taking a sample test cereal moisture percentage, comprise gland bonnet 1, cereal container 2, display module 4, key-press module 6, tested cereal 7, gland bonnet 1 and the cereal container 2 common containers that are used for the tested cereal 7 of device that form, gland bonnet 1 has constant weight, to guarantee the density of tested cereal 7 in the cereal container 2, it is characterized in that: also comprise pin type capacitive transducer 3, metering circuit 5, pin type capacitive transducer 3 is by stainless steel metal wire 8, copper pipe 9, shielded tube 10, connector 11, high-frequency insulation material 12 forms, the frequency measurement that the oscillatory circuit that metering circuit 5 is comprised of IC555 and single-chip microcomputer form forms, the connector 11 of pin type capacitive transducer 3 connects the input end of metering circuit 5, the output terminal of IC555 connects the frequency measurement pin of single-chip microcomputer, data pin by single-chip microcomputer connects display module 4, the water percentage that is shown tested cereal 7 by display module 4, the normal pins of single-chip microcomputer connects two independent 6, one of key-press modules of buttons formation and begins to measure button and a zero clearing button;
The center of pin type capacitive transducer 3 is a stainless steel metal wire 8, the head of pin type capacitive transducer 3 arranges the copper pipe 9 of a circle, with high-frequency insulation material 12 the two is separated, fix with glue, copper pipe 9 and stainless steel metal wire 8 consist of two electrodes of pin type capacitive transducer, stainless steel metal wire 8 parts are exposed high-frequency insulation material 12, copper pipe 9 links to each other with the screen layer earth polar of shielded tube 10, the head of pin type capacitive transducer 3 only arranges shielded tube 10 with the rear section on stainless steel metal wire 8, the afterbody of pin type capacitive transducer 3 is provided with connector 11;
The variation of tested cereal 7 water percentage causes that the electric capacity of pin type capacitive transducer 3 changes, the change of pin type capacitive transducer 3 electric capacitys causes the change of IC555 output terminal output frequency, by the demarcation to the tested cereal of different humidity, the output frequency variation that causes by measuring tested cereal (7) reaches the purpose of measuring water percentage.
The utility model has the advantages that: measuring principle is simple, and is highly sensitive, uses, demarcates and take a sample test conveniently, do not destroy tested cereal, and it is low to measure cost.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the utility model pin type capacitor sensor structure synoptic diagram;
Fig. 3 is the utility model pin type capacitive transducer head construction synoptic diagram;
Fig. 4 is the utility model metering circuit schematic diagram;
Among the figure: 1 is gland bonnet; 2 is the cereal container; 3 is pin type capacitive transducer; 4 is display module; 5 is metering circuit; 6 is key-press module; 7 is tested cereal; 8 is stainless steel metal wire;
9 is copper pipe; 10 is shielded tube; 11 is connector; 12 is the high-frequency insulation material.
Embodiment
With reference to accompanying drawing 1 ~ 4, specify implementation of the present utility model: a kind of device of taking a sample test cereal moisture percentage, comprise gland bonnet 1, cereal container 2, display module 4, key-press module 6, tested cereal 7, gland bonnet 1 and the cereal container 2 common containers that are used for the tested cereal 7 of device that form, gland bonnet 1 has constant weight, to guarantee the density of tested cereal 7 in the cereal container 2, also comprise pin type capacitive transducer 3, metering circuit 5, pin type capacitive transducer 3 is by stainless steel metal wire 8, copper pipe 9, shielded tube 10, connector 11, high-frequency insulation material 12 forms, the frequency measurement that the oscillatory circuit that metering circuit 5 is comprised of IC555 and single-chip microcomputer form forms, the connector 11 of pin type capacitive transducer 3 connects the input end of metering circuit 5, the output terminal of IC555 connects the frequency measurement pin of single-chip microcomputer, data pin by single-chip microcomputer connects display module 4, the water percentage that is shown tested cereal 7 by display module 4, the normal pins of single-chip microcomputer connects two independent 6, one of key-press modules of buttons formation and begins to measure button and a zero clearing button.
The center of pin type capacitive transducer 3 is a stainless steel metal wire 8, the head of pin type capacitive transducer 3 arranges the copper pipe 9 of a circle, with high-frequency insulation material 12 the two is separated, fix with glue, copper pipe 9 and stainless steel metal wire 8 consist of two electrodes of pin type capacitive transducer, stainless steel metal wire 8 parts are exposed high-frequency insulation material 12, copper pipe 9 links to each other with the screen layer earth polar of shielded tube 10, the head of pin type capacitive transducer 3 only arranges shielded tube 10 with the rear section on stainless steel metal wire 8, the afterbody of pin type capacitive transducer 3 is provided with connector 11.
In the present embodiment, the single-chip microcomputer in the metering circuit 5 adopts STC11F08, and IC555 adopts NE555, and display module 4 adopts liquid crystal 1602.
Claims (1)
1. device of taking a sample test cereal moisture percentage, comprise gland bonnet (1), cereal container (2), display module (4), key-press module (6), tested cereal (7), the common container that is used for the tested cereal of device (7) that forms of gland bonnet (1) and cereal container (2), gland bonnet (1) has constant weight, to guarantee the density of tested cereal (7) in the cereal container (2), it is characterized in that: also comprise pin type capacitive transducer (3), metering circuit (5), pin type capacitive transducer (3) is by stainless steel metal wire (8), copper pipe (9), shielded tube (10), connector (11), high-frequency insulation material (12) forms, the frequency measurement that the oscillatory circuit that metering circuit (5) is comprised of IC555 and single-chip microcomputer form forms, the connector (11) of pin type capacitive transducer (3) connects the input end of metering circuit (5), the output terminal of IC555 connects the frequency measurement pin of single-chip microcomputer, data pin by single-chip microcomputer connects display module (4), the water percentage that is shown tested cereal (7) by display module (4), the normal pins of single-chip microcomputer connects two independent buttons and consists of key-press module (6), and one begins to measure button and a zero clearing button;
The center of pin type capacitive transducer (3) is a stainless steel metal wire (8), the head of pin type capacitive transducer (3) arranges a circle copper pipe (9), with high-frequency insulation material (12) the two is separated, fix with glue, copper pipe (9) and stainless steel metal wire (8) consist of two electrodes of pin type capacitive transducer, stainless steel metal wire (8) part is exposed high-frequency insulation material (12), copper pipe (9) links to each other with the screen layer earth polar of shielded tube (10), the head of pin type capacitive transducer (3) only arranges shielded tube (10) with the rear section on stainless steel metal wire (8), the afterbody of pin type capacitive transducer (3) is provided with connector (11);
The variation of tested cereal (7) water percentage causes that the electric capacity of pin type capacitive transducer (3) changes, the change of pin type capacitive transducer (3) electric capacity causes the change of IC555 output terminal output frequency, by the demarcation to the tested cereal of different humidity (7), the output frequency variation that causes by measuring tested cereal (7) reaches the purpose of measuring water percentage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220600266 CN202886316U (en) | 2012-11-15 | 2012-11-15 | Device for sampling and testing moisture content of grain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220600266 CN202886316U (en) | 2012-11-15 | 2012-11-15 | Device for sampling and testing moisture content of grain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202886316U true CN202886316U (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220600266 Expired - Fee Related CN202886316U (en) | 2012-11-15 | 2012-11-15 | Device for sampling and testing moisture content of grain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202886316U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977331A (en) * | 2015-06-28 | 2015-10-14 | 黄宇嵩 | Cereal moisture detector |
| CN108369064A (en) * | 2016-01-18 | 2018-08-03 | 株式会社久保田 | Drying machine and drying machine measuring device |
| CN108732208A (en) * | 2018-05-22 | 2018-11-02 | 上海交通大学 | A kind of Crop moisture sensor and the method for measuring grain moisture |
| TWI707140B (en) * | 2019-10-02 | 2020-10-11 | 國立中興大學 | Device for detecting moisture content of cereals |
-
2012
- 2012-11-15 CN CN 201220600266 patent/CN202886316U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977331A (en) * | 2015-06-28 | 2015-10-14 | 黄宇嵩 | Cereal moisture detector |
| CN108369064A (en) * | 2016-01-18 | 2018-08-03 | 株式会社久保田 | Drying machine and drying machine measuring device |
| CN108732208A (en) * | 2018-05-22 | 2018-11-02 | 上海交通大学 | A kind of Crop moisture sensor and the method for measuring grain moisture |
| CN108732208B (en) * | 2018-05-22 | 2020-11-06 | 上海交通大学 | Grain moisture sensor and method for measuring grain moisture |
| TWI707140B (en) * | 2019-10-02 | 2020-10-11 | 國立中興大學 | Device for detecting moisture content of cereals |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20131115 |