CN202886317U - Grain water content measuring instrument adopting temperature control capacitance method - Google Patents
Grain water content measuring instrument adopting temperature control capacitance method Download PDFInfo
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- CN202886317U CN202886317U CN 201220630871 CN201220630871U CN202886317U CN 202886317 U CN202886317 U CN 202886317U CN 201220630871 CN201220630871 CN 201220630871 CN 201220630871 U CN201220630871 U CN 201220630871U CN 202886317 U CN202886317 U CN 202886317U
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Abstract
The utility model relates to a grain water content measuring instrument adopting a temperature control capacitance method. The instrument consists of an outer cylinder (1), an inner cylinder (2), a heating net (3), a water content sensor (4), a temperature sensor (5) and a temperature controller (6). The inner cylinder (2) is installed in the outer cylinder (1), air separates the inner and outer cylinders (2 and 1), the heating net (3) is installed on the outer wall of the inner cylinder (2), the water content sensor (4) is installed in the middle of the inner cylinder (2), the temperature sensor (5) is installed between interlayers of the inner and outer cylinders (2 and 1), the heating net (3), the water content sensor (4) and the temperature sensor (5) are respectively connected to the temperature controller (6). Grains to be measured are placed in the inner cylinder (2) and the inner and outer cylinders (2 and 1) can be sealed through an upper cover plate. Temperature of the inner cylinder (2) is controlled by the temperature controller (6), and water content of grains is detected by the water content sensor (4) and displayed by the temperature controller (6).
Description
Technical field
This grain moisture content pick-up unit belongs to the fields such as sensing technology, electronic technology, singlechip technology and mechanical ﹠ electrical technology.
Background technology
The water percentage of cereal detects great to transportation, storage and the process meaning of cereal, and the height of water percentage is very big on storage time and grain quality impact.The method that detects at present grain moisture content has infrared method, microwave method, NEUTRON METHOD, nuclear magnetic resonance method etc., and above method and technology difficulty is high, and measuring speed is slow, is difficult for promoting.Electric-resistivity method, radio-frequency (RF) impedance method and capacitance method principle are simpler, but temperature influence.The utility model mainly designs a kind of condenser type grain moisture content pick-up unit of energy temperature control, is used for demarcating condenser type grain moisture content sensor at the different temperatures environment.
Summary of the invention
For energy accurate calibration condenser type grain moisture content sensor, design a kind of temperature control capacitance method grain moisture content measuring instrument, this device comprises urceolus (1), inner core (2), heating net (3), water content sensor (4), temperature sensor (5) and thermostat (6); Inner core (2) is installed in the urceolus (1), inner core (2) is separated with air with urceolus (1) wall, inner core (2) outer wall is equipped with heating net (3), inner core (2) center bottom is equipped with water content sensor (4), between inner core (2) and urceolus (1) interlayer temperature sensor (5) is installed, heating net (3), water content sensor (4) and temperature sensor (5) are connected respectively to thermostat (6).Urceolus (1) and inner core (2) are cylindrical, the sealing of going to the bottom, and the above adds a cover and is salable; Inner core (2) is nested in the urceolus (1), between be separated with air layer.Water content sensor (4) is formed by capacitive transducer and temperature sensor combination, is fixed on inner core (2) center bottom, and connecting line is drawn by urceolus (1) bottom, for detection of water cut and the temperature of cereal.Heating net (3) be installed in inner core (2) around, be used for the cereal of energising heating inner core (2).Thermostat (6) can be controlled the temperature of cereal as required, and measures water cut and the temperature of cereal, and shows.
The beneficial effect of this utility model is that structure is simpler, can demarcate the grain moisture content sensor under different temperatures.
Description of drawings
Fig. 1 device for detecting water content structural representation, 1 is that urceolus, 2 is that inner core, 3 is that heating net, 4 is that water content sensor, 5 is that temperature sensor, 6 is thermostat among the figure.
Embodiment
This device comprises urceolus (1), inner core (2), heating net (3), water content sensor (4), temperature sensor (5) and thermostat (6); Inner core (2) is installed in the urceolus (1), inner core (2) is separated with air with urceolus (1) wall, inner core (2) outer wall is equipped with heating net (3), inner core (2) center bottom is equipped with water content sensor (4), between inner core (2) and urceolus (1) interlayer temperature sensor (5) is installed, heating net (3), water content sensor (4) and temperature sensor (5) are connected respectively to thermostat (6).Urceolus (1) and inner core (2) are cylindrical, the sealing of going to the bottom, and the above adds a cover and is salable; Inner core (2) is nested in the urceolus (1), between be separated with air layer.Water content sensor (4) is formed by capacitive transducer and temperature sensor combination, is fixed on inner core (2) center bottom, and connecting line is drawn by urceolus (1) bottom, for detection of water cut and the temperature of cereal.Heating net (3) be installed in inner core (2) around, be used for the cereal of energising heating inner core (2).Thermostat (6) can be controlled the temperature of cereal as required, and measures water cut and the temperature of cereal, and shows.
In the present embodiment, urceolus (1) interior diameter is 14cm, and height is 13cm, wall thickness 1.5mm; Inner core (2) interior diameter is 11cm, and height also is 11cm, and wall thickness 1mm, inner core (2) are installed in the urceolus (1), and going to the bottom of urceolus is fixed in going to the bottom of inner core, adopts colourless transparent plastic or organic glass to make.Whole inner core and urceolus all can seal by loam cake, and be constant in the process water cut of heating with the weight and the water cut that guarantee cereal.
In the present embodiment, heating net (3) adopts heating wire to make, and on the outer wall of inner core, power is 30W, adopts the DC12V power supply.
In the present embodiment, water content sensor (4) is that capacitance type sensor and temperature sensor combination form, capacitive transducer can adopt existing capacitive transducer probe (patent No. 201120563192.9) and electric capacity digital conversion circuit AD7150 to make, and temperature sensor adopts the DS18B20 digital temperature sensor.
In the present embodiment, temperature sensor (5) adopts the DS18B20 digital temperature sensor.
In the present embodiment, thermostat (6) comprises single-chip microcomputer, display, button, control output circuit etc., be mainly used in finishing water cut collection and temperature acquisition, and control heating net (3) to reach the temperature of cereal in the control inner core (2) according to design temperature.
Claims (5)
1. a temperature control capacitance method grain moisture content measuring instrument is characterized in that this device comprises urceolus (1), inner core (2), heating net (3), water content sensor (4), temperature sensor (5) and thermostat (6); Inner core (2) is installed in the urceolus (1), inner core (2) is separated with air with urceolus (1) wall, inner core (2) outer wall is equipped with heating net (3), inner core (2) center bottom is equipped with water content sensor (4), between inner core (2) and urceolus (1) interlayer temperature sensor (5) is installed, heating net (3), water content sensor (4) and temperature sensor (5) are connected respectively to thermostat (6).
2. a kind of temperature control capacitance method grain moisture content measuring instrument according to claim 1, it is cylindrical to it is characterized in that urceolus (1) and inner core (2) are, the sealing of going to the bottom, the above adds a cover and is salable; Inner core (2) is nested in the urceolus (1), between be separated with air layer.
3. a kind of temperature control capacitance method grain moisture content measuring instrument according to claim 1, it is characterized in that water content sensor (4) is formed by capacitive transducer and temperature sensor combination, be fixed on inner core (2) center bottom, connecting line is drawn by urceolus (1) bottom, for detection of water cut and the temperature of cereal.
4. a kind of temperature control capacitance method grain moisture content measuring instrument according to claim 1, it is characterized in that heating net (3) be installed in inner core (2) around, be used for the cereal of energising heating inner core (2).
5. a kind of temperature control capacitance method grain moisture content measuring instrument according to claim 1 is characterized in that thermostat (6) can control the temperature of cereal as required, and measures water cut and the temperature of cereal, and shows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220630871 CN202886317U (en) | 2012-11-26 | 2012-11-26 | Grain water content measuring instrument adopting temperature control capacitance method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220630871 CN202886317U (en) | 2012-11-26 | 2012-11-26 | Grain water content measuring instrument adopting temperature control capacitance method |
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| Publication Number | Publication Date |
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| CN202886317U true CN202886317U (en) | 2013-04-17 |
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| CN 201220630871 Expired - Fee Related CN202886317U (en) | 2012-11-26 | 2012-11-26 | Grain water content measuring instrument adopting temperature control capacitance method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944589A (en) * | 2012-11-26 | 2013-02-27 | 湖南科技学院 | Temperature control type device for detecting grain water contents |
| CN107490442A (en) * | 2016-09-14 | 2017-12-19 | 北京卫星环境工程研究所 | Fibre optic temperature sensor automatic calibration system and scaling method under thermal vacuum environment |
| CN107515058A (en) * | 2016-09-14 | 2017-12-26 | 北京卫星环境工程研究所 | Fiber-optical grating temperature sensor temperature calibration thermostat under thermal vacuum environment |
| CN108279261A (en) * | 2018-01-25 | 2018-07-13 | 天津现代职业技术学院 | A kind of online device for detecting water content of cereal and method based on radio frequency resistance method |
| CN113865910A (en) * | 2021-09-06 | 2021-12-31 | 神华准格尔能源有限责任公司 | Fine coal sampling device of jigger |
-
2012
- 2012-11-26 CN CN 201220630871 patent/CN202886317U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944589A (en) * | 2012-11-26 | 2013-02-27 | 湖南科技学院 | Temperature control type device for detecting grain water contents |
| CN107490442A (en) * | 2016-09-14 | 2017-12-19 | 北京卫星环境工程研究所 | Fibre optic temperature sensor automatic calibration system and scaling method under thermal vacuum environment |
| CN107515058A (en) * | 2016-09-14 | 2017-12-26 | 北京卫星环境工程研究所 | Fiber-optical grating temperature sensor temperature calibration thermostat under thermal vacuum environment |
| CN107515058B (en) * | 2016-09-14 | 2018-04-27 | 北京卫星环境工程研究所 | Fiber-optical grating temperature sensor temperature calibration thermostat under thermal vacuum environment |
| CN107490442B (en) * | 2016-09-14 | 2018-06-29 | 北京卫星环境工程研究所 | Fibre optic temperature sensor automatic calibration system and scaling method under thermal vacuum environment |
| CN108279261A (en) * | 2018-01-25 | 2018-07-13 | 天津现代职业技术学院 | A kind of online device for detecting water content of cereal and method based on radio frequency resistance method |
| CN113865910A (en) * | 2021-09-06 | 2021-12-31 | 神华准格尔能源有限责任公司 | Fine coal sampling device of jigger |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20131126 |