Portable meat moisture detection device and detection method thereof
A detection device and portable technology, applied in the field of fresh meat moisture detection, can solve the problems of errors, systematic errors, accuracy effects, etc., achieve the effects of fast and convenient detection, improve detection accuracy, and overcome anisotropy
Inactive Publication Date: 2019-06-21
JILIN UNIV
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However, due to factors such as different regions, different varieties, and different slaughtering times, the pH value of water in fresh meat is different, which directly affects the number of ions in fresh meat, resulting in the collection of fresh meat. The moisture content values obtained from the resistance of meat products are different, which is one of the systematic errors that lead to the measurement process of moisture content; and the temperature also has a greater impact on the accuracy of resistance measurement, which is the cause of the water content measurement process. Another systematic error of
Therefore, if the pH value and temperature of the sample are not corrected, the moisture content value obtained by the resistance method will have a large error, which will have a great impact on the storage and transportation of fresh meat.
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[0043] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0044] Such as figure 1 As shown, the portable meat moisture detection device of the present invention includes: a sampling system 1 and a detector 2 .
[0045] Such as figure 2 , 3As shown, the sampling system 1 includes a sampling disc 11 and a cross probe electrode fixed on the sampling disc 11, a temperature sensor 16 and an acid-base sensor 17; the sampling disc 11 adopts a circular disc; the cross probe electrode consists of an A electrode 12. Composed of B electrode 13, C electrode 14, and D electrode 15, the four electrodes are arranged at both ends of the diameters of two mutually perpendicular discs, wherein A electrode 12 and B electrode 13 form a pair of sampling electrodes, and C electrode 14 Form a pair of sampling electrodes with D electrode 15; Temperature sensor 16 adopts K-type thermocouple, and this K-type thermocouple is...
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The invention relates to a portable meat moisture detection device and a detection method thereof. The device comprises a sampling system and a detector. The sampling system comprises a sampling disc,and a cross probe electrode and an acid-base sensor which are fixed to the sampling disc and vertical to each other. A constant-current source is connected with the cross probe electrode, and outputscurrent with constant magnitude and periodically changed directions. A voltage signal acquired by the cross probe electrode is transmitted to the detector. In the detector, the voltage signal is amplified by a voltage amplification circuit, then is subjected to analog-to-digital conversion by an AD converter, and is finally transmitted to the microcontroller. A PH value acquired by the acid-basesensor is directly transmitted to the microcontroller. The microcontroller looks up in a comparison table to obtain the moisture content of the fresh meat according to the voltage signal and the PH value acquired by the acid-base sensor. The portable meat moisture detection device can detect the moisture of the fresh meat accurately, reliably, quickly and conveniently.
Description
technical field [0001] The invention belongs to the technical field of moisture detection of fresh meat, and in particular relates to a device and a detection method for detecting moisture of fresh meat using the principle of correlation between resistance and moisture content. Background technique [0002] At present, the methods for moisture testing of fresh meat at home and abroad mainly include drying method, capacitance method and resistance method and so on. The resistance method is a measurement method that is widely used. Its principle is to apply Ohm's law resistance method to measure the moisture content of meat. The sampling of fresh meat is like a resistor. When the moisture is high, the resistance is small, and when the moisture is low, the resistance is large. By detecting the resistance of fresh meat, the moisture value of fresh meat can be detected. However, due to factors such as different regions, different varieties, and different slaughtering times, the...
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IPC IPC(8): G01N27/00G01N33/12
Inventor 张涛孙百爽孙娜
Owner JILIN UNIV