CN202939148U - Sensor for detecting concentration of milk - Google Patents
Sensor for detecting concentration of milk Download PDFInfo
- Publication number
- CN202939148U CN202939148U CN 201220659293 CN201220659293U CN202939148U CN 202939148 U CN202939148 U CN 202939148U CN 201220659293 CN201220659293 CN 201220659293 CN 201220659293 U CN201220659293 U CN 201220659293U CN 202939148 U CN202939148 U CN 202939148U
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- metal outer
- barrel
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Abstract
The utility model discloses a sensor for detecting concentration of milk. The sensor is a capacitor sensor with a tubular structure; the pole plate of the sensor is arranged at the center part of a barrel; an insulating layer is arranged outside the pole plate of an electrode at the center part; another pole plate is a metal outer barrel; an insulating layer is also arranged outside the metal outer barrel; the metal outer barrel is separated from a shielding cover; a temperature sensor is arranged at the bottom side part inside the barrel between two pole plates; a pair of ultrasonic transducers is arranged at the upper and lower sides of the barrel; and a heater is arranged at the upper part of the barrel. The sensor has the advantages that the transmission characteristics and capacitance characteristics of the ultrasonic wave in the milk are applied; indirect measurement of the concentration of primary ingredients of the milk is feasible; and the requirements on the detection accuracy of the concentration of primary ingredients of the milk in dairy industry at present can be completely met. A sensor which is low in cost, nondestructive and rapid to detect is provided for detection of dairy products.
Description
Technical field:
The utility model relates to a kind of sensor, especially relates to a kind of sensor for the milk concn detection.
Background technology:
Milk and dairy produce are nutraceutical essential in our daily life, and its quality good or not is directly connected to consumer's health.Be to guarantee the quality of milk and dairy produce, from the science of milk cow raise, purchase, milk and the quality control of dairy produce process of raw material milk be to the whole process of the acceptance test of finished product milk, all need milk constituents concentration is carried out analytical control.The analytical chemistry method is mostly adopted in the measurement of traditional milk constituents content, usually adopts bar cloth cock method as the fats measurement in milk, and Kjeldahls method is adopted in the measurement of protein content, and iodimetric titration is adopted in the measurement of lactose content.These method complicated operations, technical requirement are high, need chemical reagent, the test duration is long, and measuring accuracy be subjected to human factor and such environmental effects large, more and more can not satisfy the needs, the particularly online needs that detect of actual detection.In the last few years, obtain the infrared spectrum detection method of very fast development in the analysis of milk composition field, and because sample need not pre-service, and be not destroyed, consumption is few; Need not chemical reagent, do not pollute; The advantages such as analysis speed is fast obtain practical application.But due to expensive, disposable having high input restricts its widespread use.
Present useful ultrasound wave time difference method has been explored the detection method of concentration of emulsion used.The problem that exists is: milk is a kind of colloidal dispersion system of complexity, and in this dispersed system, water is dispersion medium, and quality accounts for 88% left and right; Lactose, salt and mineral matter, vitamin etc. exist with the lewis' acid form, form aqueous solution; Protein and insoluble salt form colloidal suspension in water, form suspension; Fat is dispersed in water with little fat ball, forms emulsion.So milk is the complicated dispersed system that solution, suspension and emulsion consist of.For such complex fluid, alone its concentration of velocity of ultrasonic sound measure of the change is difficult to accurately.And the measuring method by sonic velocity change, change during sound minimum during due to concentration or temperature variation, in general, when 0.1 ℃ of concentration change 0.1% or temperature variation, change during sound and only had for tens nanoseconds, therefore, during for sound, during the survey of the measurement mechanism of temperature, temperature measurement accuracy requires highly, is difficult to reach measuring accuracy.
Summary of the invention:
The purpose of this utility model is to provide a kind of have enough sensitivity and accuracy, is convenient to install, and guarantees that the monitoring result real-time is good, and can guarantee to make the sensor for the milk concn detection of the fast detecting of milk constituents, concentration.
the purpose of this utility model is implemented by following technical scheme: a kind of sensor for the milk concn detection, it is the capacitive transducer of tubular structure, a central part electrode pad of described sensor is at its central part, be insulation course in the outside of described central part electrode pad, another pole plate is metal outer cylinder, also has a layer insulating outside described metal outer cylinder, described metal outer cylinder and radome are separated, bottom side in cylinder between described two pole plates is equipped with temperature sensor, upper and lower surface at described cylinder fills a pair of ultrasonic transducer, top at cylinder is equipped with well heater.
Should be used for the sensor that milk concn detects, described central part electrode pad is copper conductor.
Should be used for the sensor that milk concn detects, the insulation course of described central part electrode pad outside is the teflon insulation crust.
The utility model has the advantage of: use hyperacoustic transport property and capacitance characteristic in milk, it is feasible that Principal Milk Constituents concentration is measured indirectly, can satisfy current dairy industry fully to the requirement of Principal Milk Constituents concentration accuracy of detection.The utility model provides the sensor of a kind of low cost, harmless, fast detecting for dairy products detect.
Description of drawings:
Fig. 1 is structural representation of the present utility model.
Fig. 2 is vertical view of the present utility model.
Reference numeral: capacitive transducer 1, central part electrode pad 2, central part electrode dielectric layer 3, metal outer cylinder 4, metal outer cylinder insulation course 5, radome 6, temperature sensor 7, ultrasonic transducer 8, well heater 9.
Embodiment:
A kind of sensor for the milk concn detection, it is the capacitive transducer 1 of tubular structure, a central part electrode pad 2 of sensor 1 is at its central part, be insulation course 3 in the outside of central part electrode pad 2, another pole plate is metal outer cylinder 4, also has a layer insulating 5 outside metal outer cylinder 4, metal outer cylinder 4 and radome 6 are separated, bottom side in cylinder between two pole plates is equipped with temperature sensor 7, upper and lower surface at cylinder fills a pair of ultrasonic transducer 8, on the top of cylinder, well heater 9 is installed.Central part electrode pad 2 is copper conductor.The insulation course 3 of central part electrode pad 2 outsides is the teflon insulation crust.The interior external radius of the length of this sensor and cylinder is fixed, and namely volume is fixed.After in milk pours into the sensor cylinder, first by the heating of Single-chip Controlling well heater, when temperature sensor recorded milk temperature and reaches setting value, under fixing milk temperature condition, Single-chip Controlling ultrasonic sensor and capacitive transducer were measured.
Claims (3)
1. one kind is used for the sensor that milk concn detects, it is characterized in that, it is the capacitive transducer (1) of tubular structure, a central part electrode pad (2) of described sensor (1) is at its central part, be insulation course (3) in the outside of described central part electrode pad (2), another pole plate is metal outer cylinder (4), also has a layer insulating (5) outside described metal outer cylinder (4), described metal outer cylinder (4) and radome (6) are separated, bottom side in cylinder between described two pole plates is equipped with temperature sensor (7), upper and lower surface at described cylinder fills a pair of ultrasonic transducer (8), well heater (9) is installed on the top of cylinder.
2. a kind of sensor for the milk concn detection according to claim 1, is characterized in that, described central part electrode pad (2) is copper conductor.
3. a kind of sensor for the milk concn detection according to claim 1, is characterized in that, the outside insulation course (3) of described central part electrode pad (2) is the teflon insulation crust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220659293 CN202939148U (en) | 2012-11-21 | 2012-11-21 | Sensor for detecting concentration of milk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220659293 CN202939148U (en) | 2012-11-21 | 2012-11-21 | Sensor for detecting concentration of milk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202939148U true CN202939148U (en) | 2013-05-15 |
Family
ID=48323379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220659293 Expired - Fee Related CN202939148U (en) | 2012-11-21 | 2012-11-21 | Sensor for detecting concentration of milk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202939148U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049003A (en) * | 2014-06-10 | 2014-09-17 | 中国人民银行印制科学技术研究所 | Array-capacitor inductive sensor and negotiable-securities anti-counterfeit detection method |
| CN112014461A (en) * | 2019-05-28 | 2020-12-01 | 滁州市康普检测设备有限公司 | Detection system and method for multi-index analysis of milk |
-
2012
- 2012-11-21 CN CN 201220659293 patent/CN202939148U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049003A (en) * | 2014-06-10 | 2014-09-17 | 中国人民银行印制科学技术研究所 | Array-capacitor inductive sensor and negotiable-securities anti-counterfeit detection method |
| CN112014461A (en) * | 2019-05-28 | 2020-12-01 | 滁州市康普检测设备有限公司 | Detection system and method for multi-index analysis of milk |
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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: 20130515 Termination date: 20131121 |