CN205607982U - Meat quality detection device based on smell and impedance - Google Patents
Meat quality detection device based on smell and impedance Download PDFInfo
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- CN205607982U CN205607982U CN201620325422.0U CN201620325422U CN205607982U CN 205607982 U CN205607982 U CN 205607982U CN 201620325422 U CN201620325422 U CN 201620325422U CN 205607982 U CN205607982 U CN 205607982U
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- 235000013372 meat Nutrition 0.000 title claims abstract description 90
- 238000001514 detection method Methods 0.000 title claims abstract description 70
- 239000000523 sample Substances 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000000691 measurement method Methods 0.000 claims description 17
- 230000002159 abnormal effect Effects 0.000 claims description 9
- 230000035943 smell Effects 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 6
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 38
- 238000000034 method Methods 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 235000013622 meat product Nutrition 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002847 impedance measurement Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000009659 non-destructive testing Methods 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 235000001014 amino acid Nutrition 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012009 microbiological test Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000011896 sensitive detection Methods 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
The utility model relates to a meat quality detection device based on smell and impedance, which comprises a meat quality detector, a meat freshness detection part and a meat water content detection part; the meat quality detector comprises a controller, a liquid crystal display module, a mode switching key, a power supply system and a switch; the freshness detection part of the meat quality comprises H2S gas-sensitive probe and gas-sensitive element; the meat moisture content detection part comprises an impedance detection probe and an impedance chip. The utility model discloses only need 10 seconds can judge the fresh degree of meat and water content fast. And the structure is simplified, the cost is low, the processing is convenient, and the operation is convenient.
Description
Technical field
This utility model relates to measurement techniques for quality detection of meat field of non destructive testing, particularly relates to a kind of Portable meat quality nondestructive testing device.
Technical background
Food-safety problem is a big problem of puzzlement people all the time.Meat products is very usually the most indispensable food materials, but outmoded meat and water-injected meat cause bigger harm in meat products safety.There is varieties of food items sanitary standard and the Safety Examination of comparatively perfect in country at present, also has diversified detection methods, traditional meat quality detection method mainly to have organoleptic examination, physical and chemical experiment inspection, Micro biological Tests etc..Organoleptic detection method is difficult to quantify test rating and higher to reviewer's Capability Requirement, it is necessary to be through systematically cultivating and the people of long-term practice could be competent at.Physical and chemical inspection needs a series of equipment and device to complete, and needs that meat sample carries out the early stages such as destruction and processes, and detection process is complicated, detection cycle length, inspection cost are high.China's food hygienic standard GB/T 5009.44 2003 " meat analyzes method with meat products sanitary standard " measures as meat freshness index using total volatile basic nitrogen (TVB-N), but the detection of TVB-N is sufficiently complex, in addition the process time being sent to test in laboratory is longer, meat freshness will change, and during this, moisture easily runs off also can affect the judgement of water-injected meat.Therefore, design a portable, quick, accurate, the freshness of detection meat of science and the device of water content is necessary.
Utility model content
For the deficiencies in the prior art, technical problem to be solved in the utility model is: providing a kind of measurement techniques for quality detection of meat checking device based on abnormal smells from the patient and impedance, this device passes through H2S air-sensitive detecting head, controller, gas sensor and the use of impedance chip, can detect meat freshness, detection meat moisture determine whether water-injected meat；This utility model is not on the premise of destroying meat original state to be measured, by the detection abnormal smells from the patient of meat and resistance value, realizes new breakthrough in the freshness of detection meat with in terms of judging meat whether water filling.
This utility model solves described technical problem and be the technical scheme is that
A kind of measurement techniques for quality detection of meat based on abnormal smells from the patient and impedance detection device, this device includes measurement techniques for quality detection of meat detector, meat freshness detection part and meat water content detection part；
Described measurement techniques for quality detection of meat detector includes controller, LCD MODULE, mode switching key, electric power system and switch；
Described LCD MODULE, mode switching key, electric power system are connected with controller respectively, and switch is connected with electric power system；
Described meat freshness test section divides and includes H2S air-sensitive detecting head and gas sensor, described H2S air-sensitive detecting head is connected with gas sensor, and gas sensor is connected with controller；Described meat water content test section divides and includes impedance probes, impedance chip, and described impedance probes is connected with impedance chip, and described impedance chip is connected with controller；
Described mode switching key is non-self-lock-ing button；Described electric power system is rechargeable battery；Described switch is self-lock switch；
Described H2S air-sensitive detecting head is replaceable H2S air-sensitive detecting head；Gas sensor is H2S gas sensor；
Described controller is STM32 chip.
Described impedance chip is AD5933 chip.
The beneficial effects of the utility model are: measurement techniques for quality detection of meat detector based on abnormal smells from the patient and impedance, it is the concentration carrying out the specific gas that measuring samples meat is discharged based on gas sensor, the temperature recorded in conjunction with the temperature sensor that impedance chip is embedded carries out reduction to speed, and then judges the freshness of meat sample；Whether sample meat is measured by water filling and water filling degree based on the temperature sensor that impedance chip and impedance chip are embedded.Measurement techniques for quality detection of meat detector based on abnormal smells from the patient and impedance, based on embedded microcontroller on its hardware, with gas sensor, impedance measurement chip as core, with the experimental data of the actual demarcation that is built into program for relying on, erect only need and within more than 10 second, can quickly judge the portable detector of meat freshness and water content.And its structure simplify, with low cost, easy to process, easy to operate.
The experimental principle of detection meat freshness: in the aminoacid that meat contains, have some to contain sulfydryl, in meat corruption catabolic process, H can be discharged2S and NH3And other escaping gases.Therefore the speed of gas release can be produced at a temperature of different times according to meat, for the detection of meat freshness.This scheme has good dependency with the mensuration (TVB-N method) of the standard detection way total volatile basic nitrogen of national Specification, portable lossless, can detect great amount of samples simultaneously.Owing to concentration is relevant with spatial volume, therefore final effective measurement is under uniform temperature, unit interval unit volume meat release gas speed.
Detect whether the experimental principle for water-injected meat: meat moisture and meat impedance operator exist obvious logarithmic relationship, combined impedance chip and the data of temperature sensor, record and be built into the physical relationship table of " the impedance water content " at each temperature of program according to experiment, i.e. can get the water content of sample.
Accompanying drawing explanation
With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of embodiment of the present utility model.
Fig. 2 is the system block diagram of meat freshness detection part of the present utility model.
Fig. 3 is the system block diagram of meat water content detection part of the present utility model.
In figure, 1. measurement techniques for quality detection of meat detector, 2. meat freshness detection part, 3. meat water content detection part, 11. controllers, 12. LCD MODULE, 13. mode switching key, 14. electric power systems, 15. switches, 21.H2S air-sensitive detecting head, 22. gas sensors, 31. detection impedance probe, 32. impedance chips.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, detailed description of the invention of the present utility model is described in further detail.Following example are used for illustrating this utility model, but are not limited to protection domain of the present utility model.
This utility model is a kind of measurement techniques for quality detection of meat based on abnormal smells from the patient and impedance detection device (seeing Fig. 1), and this device includes measurement techniques for quality detection of meat detector 1, meat freshness detection part 2 and meat water content detection part 3；
Described measurement techniques for quality detection of meat detector 1 includes controller 11, LCD MODULE 12, mode switching key 13, electric power system 14 and switch 15；
Described LCD MODULE 12, mode switching key 13, electric power system 14 I/O with controller 11 respectively is connected, and switch 15 is connected with electric power system 14；Described LCD MODULE 12, mode switching key 13 are positioned at front of the present utility model；
Described meat freshness detection part 2 is an air-sensitive detection module, by H2S air-sensitive detecting head 21, gas sensor 22 form.Described H2S air-sensitive detecting head 21 is connected with gas sensor 22, and gas sensor 22 is connected with the I/O of controller 11；Described H2S air-sensitive detecting head 21 and gas sensor 22 are positioned at side of the present utility model, and described controller 11 is positioned at inside this utility model；
Described meat water content detection part 3, including a pair impedance probes 31, impedance chip 32, the pair of impedance probes 31 is connected with impedance chip 32, described impedance chip 32 is connected with the IIC communication interface of controller 11, described impedance probes 31 is distributed in side of the present utility model, and described impedance chip 32 is positioned at inside of the present utility model；
Described measurement techniques for quality detection of meat detector 1 be shaped as patty or cuboid.
Described controller 11 is STM32 chip, and quantity is one.
Described LCD MODULE 12 is OLED display screen, and quantity is one.
Described mode switching key 13 is non-self-lock-ing button, and quantity is one.
Described electric power system 14 is rechargeable battery.
Described switch 15 is self-lock switch, and quantity is one.
Described air-sensitive detecting head 21 uses replaceable H2S air-sensitive detecting head, quantity is one.
Described gas sensor 22 uses H2S gas sensor, quantity is one.
Described detection impedance probe 31 is a pair metal probe；
Described impedance chip 32 is AD5933 chip, and quantity is one.
The meat freshness detection part 2 of this utility model is by H2S air-sensitive detecting head 21 and gas sensor 22 form；Meat water content detection part 3 is made up of detection impedance probe 31 and impedance chip 32.Air-sensitive detecting head 21 is connected with gas sensor 22, is positioned at the top of detector, is used for measuring the concentration of meat to be measured release specific gas.The embedded temperature sensor of impedance chip 32 is for measuring the temperature of current environment.Detection impedance probe 31 is connected with impedance chip 32, for providing sample resistance value.Meat freshness detection part 2, impedance chip 32 is connected with controller 11, the H that controller 11 receives meat freshness detection part 2, impedance chip 32 is measured respectively2S gas concentration, current environmental temperature value and sample resistance value data, and carry out comprehensive analysis processing, and then obtain freshness and the water filling degree of meat sample.LCD MODULE 12 is connected with controller 11, for showing freshness and the water filling degree of meat sample.Mode switching key 13 is connected with controller 11, for the switching between " water content detection " and " freshness detection ".Electric power system 14 is connected with controller 11, for the voltage stable for whole system offer.Switch 15 is connected with electric power system 14, for controlling the open and close of detector.
Program or agreement that this utility model relates to are that device carries or known technology.
The specific works flow process (seeing Fig. 2) of this utility model freshness detection part is:
(1) air-sensitive detecting head is placed in air 5 seconds, obtains gas relative concentration numerical value to be measured in air；
(2) after controller algorithm removes invalid data, the reference value as this measurement of averaging；
(3) air-sensitive detecting head is placed in the small plastic bag equipped with meat sample to be measured；
(4) temperature sensor that impedance chip is embedded records current environmental temperature and is stored in controller；
(5) air-sensitive module is to current sample release gas concentration sampling, and incoming controller, and controller judges whether sample magnitude occurs cataclysm, the most then enter step (6), otherwise repeat this step；
(6) controller starts to store the concentration data that gas sensor collects, it may be judged whether reach predetermined data capacity, the most then enter step (7), otherwise repeat this step；
(7) controller carries out least square fitting to the data collected in step (6), obtains slope, the rate of release of release gas the most to be measured；
(8) controller according to built-in by " temperature rate of release relation " form of experimental calibration, and the ambient temperature that step (4) records, the rate of release that will obtain in step (7), is converted into the rate of release under certain standard temperature；
(9) " bay during meat exposure air at a temperature of rate of release " form step (8) gained rate of release and calibration experiment recorded compares, and obtains this sample and " is equivalent to the meat exposure air time at a temperature of certain "；
(10) result in step (9) is exported LCD MODULE and shows by controller.
The specific works flow process (seeing Fig. 3) of this utility model water content detection part is:
(1) mode switching key is pressed, hardware initialization；
(2) the temperature sensor measurement ambient temperature that impedance chip is embedded；
(3) a pair detection impedance probe is placed in sample both sides；
(4) impedance chip measuring samples resistance value the storage of incoming controller；
(5) according to temperature and the resistance value recorded, compare with " impedance, temperature water content " form of experimental calibration gained, obtain sample moisture content；
(6) result is exported LCD MODULE.
Embodiment 1
The present embodiment uses above-mentioned connected mode, and each device uses the device of the respective model of each producer offer of embodiment 1, and detector is cuboid.Controller 11 is STM32 microcontroller, and quantity is 1；LCD MODULE 12 is OLED Liquid Crystal Module, and quantity is 1；Mode switching key 13 is non-self-lock-ing touch key, and quantity is 1；Switch 15 switchs for ship type, and quantity is 1；Gas sensor 22 is H2S gas sensor, quantity is 1；Detection impedance probe 31 be metal probe, and quantity is 1 to be AD5933 chip to, impedance chip 32, and quantity is 1；Use this high-precision impedance measurement chip of AD5933, measured ambient temperature by its built-in temperature detecting function simultaneously.By IIC agreement and controller communication.
This device and H2S air-sensitive detecting head is connected with gas sensor, it is possible to record H in air2The real-time content of S gas.By great many of experiments, obtain the H that meat is the most corrupt2S gas concentration data, and simulate curve, utilize method of least square to try to achieve its slope of curve, be used for representing rate of gas release.Controller reads a numerical value passing back of gas sensor by AD conversion per certain time and stores. and give up 30% minimum data after sequence and (find that sensor values fluctuates near true value by graphical analysis, but have small part to be distributed in relatively low level), record the average of the readings of sensor in ambient temperature and air after doing average and discharge H as meat2The value standard of S gas velocity.
Experiment finds the different resting periods, and rate of gas release is different, by analyzing the image of meat release gas under different time points, uses least square fitting to go out its slope (i.e. rate of gas release), i.e. can be used for screening the resting period of meat.
In terms of detection meat water filling degree, there is obvious logarithmic relationship in meat moisture and meat impedance operator.This device embedded AD5933 impedance chip, utilizes impedance chip can record meat resistance value, with controller with IIC protocol communication, by the calibration scale being built in program, exports its sample per cent moisture recorded, and then judges meat whether water filling.
This utility model unaccomplished matter is known technology.
Claims (2)
1. measurement techniques for quality detection of meat based on an abnormal smells from the patient and impedance detection device, is characterized by that this device includes measurement techniques for quality detection of meat detector, meat freshness detection part and meat water content detection part；
Described measurement techniques for quality detection of meat detector includes controller, LCD MODULE, mode switching key, electric power system and switch；
Described LCD MODULE, mode switching key, electric power system are connected with controller respectively, and switch is connected with electric power system；
Described meat freshness test section divides and includes H2S air-sensitive detecting head and gas sensor, described H2S air-sensitive detecting head is connected with gas sensor, and gas sensor is connected with controller；Described meat water content test section divides and includes impedance probes, impedance chip, and described impedance probes is connected with impedance chip, and described impedance chip is connected with controller；
Described mode switching key is non-self-lock-ing button；Described electric power system is rechargeable battery；Described switch is self-lock switch；
Described H2S air-sensitive detecting head is replaceable H2S air-sensitive detecting head；Air-sensitive module is H2S gas sensor；
Described controller is STM32 chip.
2. measurement techniques for quality detection of meat based on abnormal smells from the patient and impedance detection device as claimed in claim 1, is characterized by that described impedance detection chip is AD5933 chip.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620325422.0U CN205607982U (en) | 2016-04-18 | 2016-04-18 | Meat quality detection device based on smell and impedance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620325422.0U CN205607982U (en) | 2016-04-18 | 2016-04-18 | Meat quality detection device based on smell and impedance |
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| CN205607982U true CN205607982U (en) | 2016-09-28 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226408A (en) * | 2017-12-28 | 2018-06-29 | 青岛三统万福食品科技股份有限公司 | A kind of measurement techniques for quality detection of meat detection device |
| CN108982636A (en) * | 2018-07-26 | 2018-12-11 | 江苏大学 | Quickly identify the method for cold fresh beef reconciliation chilled beef based on electrochemistry phase spectrum |
| CN110231369A (en) * | 2019-07-15 | 2019-09-13 | 南通科技职业学院 | A kind of detection device and detection method of chicken meat |
| CN111175230A (en) * | 2020-02-11 | 2020-05-19 | 山东省产品质量检验研究院 | Pork detection equipment |
| CN114965560A (en) * | 2022-04-14 | 2022-08-30 | 北京市农林科学院信息技术研究中心 | Meat water loss sensing method and device |
-
2016
- 2016-04-18 CN CN201620325422.0U patent/CN205607982U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226408A (en) * | 2017-12-28 | 2018-06-29 | 青岛三统万福食品科技股份有限公司 | A kind of measurement techniques for quality detection of meat detection device |
| CN108982636A (en) * | 2018-07-26 | 2018-12-11 | 江苏大学 | Quickly identify the method for cold fresh beef reconciliation chilled beef based on electrochemistry phase spectrum |
| CN110231369A (en) * | 2019-07-15 | 2019-09-13 | 南通科技职业学院 | A kind of detection device and detection method of chicken meat |
| CN110231369B (en) * | 2019-07-15 | 2021-09-10 | 南通科技职业学院 | Detection device and detection method for meat quality of chicken |
| CN111175230A (en) * | 2020-02-11 | 2020-05-19 | 山东省产品质量检验研究院 | Pork detection equipment |
| CN111175230B (en) * | 2020-02-11 | 2023-03-31 | 陕西铜川润民达康食品有限公司 | Pork detection equipment |
| CN114965560A (en) * | 2022-04-14 | 2022-08-30 | 北京市农林科学院信息技术研究中心 | Meat water loss sensing method and device |
| CN114965560B (en) * | 2022-04-14 | 2023-10-20 | 北京市农林科学院信息技术研究中心 | Meat water loss sensing method and device |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160928 Termination date: 20170418 |