CN103472126B - A kind of detection method of the tubers Pickle salinity based on mutual inductance principle - Google Patents
A kind of detection method of the tubers Pickle salinity based on mutual inductance principle Download PDFInfo
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- CN103472126B CN103472126B CN201310411984.8A CN201310411984A CN103472126B CN 103472126 B CN103472126 B CN 103472126B CN 201310411984 A CN201310411984 A CN 201310411984A CN 103472126 B CN103472126 B CN 103472126B
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Abstract
Based on a detection method for the tubers Pickle salinity of mutual inductance principle, belong to Food Science and electromagnetic cross-application field.The present invention squeezes pickling rhizome vegetable making beating the liquid that obtains, and being filled in glass Communicating device and forming closed-loop path, wherein glass Communicating device is containing one section of glass spring.Variable-frequency power sources is adopted to send the Low Frequency Sine Signals of certain frequency and driving voltage, encourage the coil winding of annular silicon steel core one end, with the magnetic flux changed, owing to being full of a large amount of strong electrolyte negative ions in Pickle juice, therefore alternating ion electric current is detected in the other end is by the winding loop that glass spring is formed, its current value and salt content present linear relationship, can convert its current value to salt content, the salinity sensing range 0 ~ 22% of this method.The inventive method and traditional fruits and vegetables salinity measure compared with the silver nitrate chemical titration that adopts, and easy and simple to handle, the test duration is short, and does not adopt any chemical reagent, and degree of accuracy is high, repeatable strong.
Description
Technical field
Based on a detection method for the tubers Pickle salinity of mutual inductance principle, relate to a kind of food electricity physical detection technology, belong to Food Science and electromagnetic cross-application neck city.
Background technology
Curing food can be divided into vegetable raw material and animal raw materials by raw material sources, and in vegetable raw material, divides again fruit class, leaf vegetables, tubers.Tubers moisture content of raw material is relatively high, and rhizome vegetable of pickling popular on the market comprises: hot pickled mustard tube, pickled lettuce, bubble ternip, salt marsh carrot, salt down the head of garlic and Chinese celery etc., deeply likes by the common people.Pickling of vegetables, essence is natural diffuseness under irregular thermal motion of chlorion and sodion and process of osmosis, and comprise the minimizing of vegetable plant cells moisture, cell death, permeability of cell membrane increases.The method adopted the detection of Pickle salinity is at present all silver nitrate chemical titration.Operate comparatively loaded down with trivial details, preliminary procedure is longer, and chemical reagent consumption is comparatively large, is unfavorable for quick detection.
Summary of the invention
The object of the invention is to provide a kind of detection method of the tubers Pickle salinity based on mutual inductance principle.
Technical scheme of the present invention: a kind of detection method of the tubers Pickle salinity based on mutual inductance principle, equipment therefor of the present invention is made up of variable-frequency power sources 1, coil winding 2, annular silicon steel iron core 3, glass Communicating device 4, clamp on amperemeter 5, multimeter 6, as shown in Figure 1; Glass Communicating device contains one section of glass spring 8, glass spring as winding around on annular silicon steel iron core one end, variable-frequency power sources and coil winding are connected, coil winding is around on the annular silicon steel iron core other end, produce magnetic circuit 9 in annular silicon steel iron core, detect sample 7 and be placed in glass Communicating device, clamp on amperemeter measures the alternation induction gas current produced in liquid winding loop in glass Communicating device, multimeter connects with clamp on amperemeter, shows the current value surveyed;
Squeeze pickling rhizome vegetable making beating the liquid that obtains, being filled in glass Communicating device and forming closed-loop path, wherein glass Communicating device is containing one section of glass spring; Variable-frequency power sources is adopted to send the Low Frequency Sine Signals of certain frequency and driving voltage, encourage the coil winding of annular silicon steel core one end, with the magnetic flux changed, owing to being full of a large amount of strong electrolyte negative ions in Pickle juice, therefore alternating ion electric current is detected in the other end is by the winding loop that glass spring is formed, its current value and Pickle salt content present linear relationship;
Variable-frequency power sources sends frequency 50Hz, the sinusoidal ac signal of driving voltage effective value 40 ~ 60V;
Coil winding is 200 circles;
Annular silicon steel iron core height 2cm, the length of magnetic path 50 ~ 60cm;
Material containing the glass Communicating device of glass spring is silicate material, not metal ion, the one section of glass spring comprised, its number of turn 12 circle, internal diameter 3mm, external diameter 5mm, length 12cm, sectional area 8cm
2;
The measuring accuracy scope of clamp on amperemeter is interchange value 0 ~ 88mA, and the rhizome vegetable salt content pickled is converted by the current value detected,
Wherein:
---the exchange current value of detection, unit mA, salinity sensing range 0 ~ 22%.
Beneficial effect of the present invention: the present invention can complete in the extremely short time and pickle quality control to what pickle rhizome vegetable, the inventive method and traditional fruits and vegetables salinity measure compared with the silver nitrate chemical titration that adopts, easy and simple to handle, test duration is short, and do not adopt any chemical reagent, degree of accuracy is high, repeatable strong.
Accompanying drawing explanation
A kind of tubers Pickle salinity detection method principle schematic based on mutual inductance principle of Fig. 1.1, variable-frequency power sources; 2, coil winding; 3, annular silicon steel iron core; 4, glass Communicating device; 5, clamp on amperemeter; 6, multimeter; 7, sample is detected; 8, glass spring; 9, magnetic circuit.
Embodiment
Embodiment 1
Get the salt summer radish of pickling 5 days, blend, squeeze out juice, after filtering, the slow implantation glass Communicating device of juice forms closed-loop path state, its glass Communicating device is made up of the silicate of not metal ion, comprise one section of glass spring, the number of turn is 12 circles and internal diameter is 3mm, and external diameter is 5mm, length 12cm, sectional area 8cm
2.Glass spring is wrapped in annular silicon steel iron core one end as winding, its iron core height 2cm, the long 52cm of magnetic circuit.Coil winding wound is at the other end of silicon steel core, and its number of turn is 200 circles, and is connected in variable-frequency power sources, and variable-frequency power sources sends frequency 50Hz, 55V(effective value) pumping signal.The alternating flux now produced is passed through in closed annular silicon steel iron core, produces induction gas current in the sample juice closed-loop path being full of strong electrolyte.Detect that current value is 21.2mA by the interchange gear of clamp on amperemeter, and be 5.3% by the salt content that following formula calculates salt summer radish.
Wherein clamp on amperemeter is high-precision Taiwan safe bodyguard PROVA-15 alternating current-direct current clamp on amperemeter, need connect multimeter to show detected value.Now, adopt silver nitrate chemical titration to detect, the salt content obtained is 5.2% simultaneously.
Claims (1)
1., based on a detection method for the tubers Pickle salinity of mutual inductance principle, it is characterized in that equipment therefor is made up of variable-frequency power sources (1), coil winding (2), annular silicon steel iron core (3), glass Communicating device (4), clamp on amperemeter (5), multimeter (6); Glass Communicating device contains one section of glass spring (8), glass spring as winding around on annular silicon steel iron core one end, variable-frequency power sources and coil winding are connected, coil winding is around on the annular silicon steel iron core other end, produce magnetic circuit (9) in annular silicon steel iron core, detect sample (7) and be placed in glass Communicating device, clamp on amperemeter measures the alternation induction gas current produced in liquid winding loop in glass Communicating device, multimeter connects with clamp on amperemeter, shows the current value surveyed;
Squeeze pickling rhizome vegetable making beating the liquid that obtains, being filled in glass Communicating device and forming closed-loop path, wherein glass Communicating device is containing one section of glass spring; Variable-frequency power sources is adopted to send the Low Frequency Sine Signals of certain frequency and driving voltage, encourage the coil winding of annular silicon steel core one end, with the magnetic flux changed, owing to being full of a large amount of strong electrolyte negative ions in Pickle juice, therefore alternating ion electric current is detected in the other end is by the winding loop that glass spring is formed, its current value and Pickle salt content present linear relationship;
Variable-frequency power sources sends frequency 50Hz, the sinusoidal ac signal of driving voltage effective value 40 ~ 60V;
Coil winding is 200 circles;
Annular silicon steel iron core height 2cm, the length of magnetic path 50 ~ 60cm;
Material containing the glass Communicating device of glass spring is silicate material, not metal ion, the one section of glass spring comprised, its number of turn 12 circle, internal diameter 3mm, external diameter 5mm, length 12cm, sectional area 8cm
2;
The measuring accuracy scope of clamp on amperemeter is interchange value 0 ~ 88mA, and the rhizome vegetable salt content pickled is converted by the current value detected,
Wherein:
---the exchange current value of detection, unit mA, salinity sensing range 0 ~ 22%.
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| CN201310411984.8A CN103472126B (en) | 2013-09-11 | 2013-09-11 | A kind of detection method of the tubers Pickle salinity based on mutual inductance principle |
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| CN201310411984.8A CN103472126B (en) | 2013-09-11 | 2013-09-11 | A kind of detection method of the tubers Pickle salinity based on mutual inductance principle |
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| CN107997032B (en) * | 2017-12-25 | 2023-07-28 | 吉林大学 | Magnetic-electric-thermal multi-physical field coupling auxiliary pickling fermentation automation device |
| TWI672499B (en) * | 2018-07-26 | 2019-09-21 | 劉茂誠 | Non-invasive nitrate detection apparatus and method for fruits/vegetables |
| CN111721898B (en) * | 2020-06-28 | 2023-03-28 | 重庆工业自动化仪表研究所 | Online salinity detection device for pickled foods |
| CN111965244B (en) * | 2020-08-30 | 2022-04-05 | 广东利诚检测技术有限公司 | Method for detecting sodium metabisulfite in rice flour based on excitation equipotential equipment |
| CN111982976B (en) * | 2020-08-30 | 2022-04-08 | 广东利诚检测技术有限公司 | Method for detecting alum content in sweet potato powder based on heterogeneous equal-difference induced potential |
| CN111983012B (en) * | 2020-08-30 | 2022-04-08 | 广东利诚检测技术有限公司 | Method for detecting potassium sorbate in steamed bread by using out-of-phase equal-difference three-way induced potential |
| CN111983011B (en) * | 2020-08-30 | 2022-04-08 | 广东利诚检测技术有限公司 | Method for detecting sodium cyclamate in steamed bread based on four-way equal-difference induced potentials with different phases |
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| CN102680499A (en) * | 2012-05-03 | 2012-09-19 | 东南大学 | Sensor and method for detecting salinity based on micro-electromechanical system (MEMS) technology |
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| JP2986099B1 (en) * | 1998-11-25 | 1999-12-06 | 株式会社エレクトロンチャージャー研究所 | Value-added processing of shell eggs |
| CN102578597A (en) * | 2012-03-06 | 2012-07-18 | 江南大学 | Induction-ion-current-based method for fast curing food |
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