CN109239285B - Detector for measuring meat corruption degree - Google Patents

Abstract

The invention discloses a detector for measuring the decay degree of meat, wherein a closed box body is made of transparent material, and the bottom of the closed box body is provided with an opening; sensor detection mechanism is including fixed sensor array, portable sensor probe subassembly and data acquisition module, and fixed sensor array and data acquisition module are all fixed to be set up at the top of airtight box, and portable sensor probe subassembly is including rectangular coordinate robot and sensor probe, and rectangular coordinate robot's installation base fixed connection is top in airtight box, and sensor probe is fixed to be set up on rectangular coordinate robot's three-dimensional removal output. The invention can carry out contact detection on the surface of the sample by the movable sensor probe, and can judge the corruption degree of the sample more accurately by matching with the electronic nose system and the temperature and humidity sensor.

Description

A detector for measuring the degree of corruption of meat

technical field

The invention belongs to the technical field of food detection, and particularly relates to a detector for measuring the degree of corruption of meat.

Background technique

In the process of meat processing, transportation, storage and shelf sales, sellers, management departments and buyers all need to test its freshness. Because of the external environment and microorganisms, meat products will be spoiled and deteriorated, resulting in unpleasant flavors. Quality declines. At present, the main methods for detecting the freshness of meat products are artificial evaluation and biochemical methods. Artificial sensory evaluation is greatly affected by the physical condition, mood and environmental changes of the discriminator, while biochemical methods are time-consuming, labor-intensive and expensive. Electronic nose is a new type of instrument that imitates the nose of humans and animals and is used to analyze, identify and detect complex odors and volatile components. Compared with commonly used analytical instruments (such as chromatograph, spectrometer, etc.) Evaluate odor quickly and reproducibly. At present, electronic nose technology has been widely used in the research of food, agricultural products, medicine and other fields.

However, the electronic nose can only detect the gas volatilized from the sample, but cannot perform contact detection on the surface of the sample, and the judgment of the degree of corrosion of the sample is not accurate; at the same time, due to the existence of interfering gases in the air, the detection of the electronic nose will also affected.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a detector for measuring the degree of corruption of meat, so as to solve the problems raised in the above-mentioned background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: a detector for measuring the degree of corruption of meat, comprising a closed box, a controller, a display and a sensor detection mechanism, and the sensor detection mechanism is arranged on the closed box, the controller is electrically connected to the display;

The airtight box is made of transparent material, the bottom of which is open, the sample to be tested can be placed in the airtight case, and the user can observe the condition of the sample from the outside of the airtight case;

The sensor detection mechanism includes a fixed sensor array, a mobile sensor probe assembly, and a data acquisition module. Both the fixed sensor array and the data acquisition module are fixedly arranged on the top of the airtight box. The mobile sensor probe assembly includes There are a Cartesian coordinate robot and a sensor probe. The installation base of the Cartesian coordinate robot is fixedly connected to the top of the airtight box. The sensor probe is fixedly arranged on the three-dimensional mobile output end of the Cartesian coordinate robot. The fixed sensor array and sensor probe The data acquisition module is electrically connected to the data acquisition module, and the data acquisition module and the rectangular coordinate robot are electrically connected to the controller; the response signal of the sample in the closed box is obtained through the fixed sensor array and the sensor probe, and then converted into a digital signal through the data acquisition module And transmitted to the controller, the controller processes the digital signal and classifies the degree of corruption, and the display is used for human-computer interaction.

Preferably, the mobile sensor probe assembly further includes a sensor probe guide block, the sensor probe guide block is fixedly connected to the three-dimensional mobile output end of the Cartesian coordinate robot, and a limit slot is provided on the top of the sensor probe guide block, A guide hole is opened at the bottom of the limit groove, and the bottom of the guide hole penetrates the bottom of the sensor probe guide block;

The top of the sensor probe penetrates the guide hole and extends into the limit slot, the top of the sensor probe is fixedly connected to the limit block, the top of the sensor probe guide block is fixedly connected with an upper cover by bolts, and the upper cover is A spring is fixedly connected with the top of the limit block.

Preferably, the bottom of the spring is welded and fixed to the top of the limiting block.

Preferably, it also includes a ventilation mechanism, the ventilation mechanism includes an air intake pipe and an air extraction pipe, the air intake pipe is provided with a first electric valve, and the air extraction pipe is provided with a second electric valve and an air pump, so The first electric valve, the second electric valve and the air pump are all electrically connected to the controller;

An air inlet is opened on the side wall of the airtight box, and one end of the air inlet pipe is fixedly connected to the air inlet;

The top of the airtight box is provided with an air suction port, and one end of the air suction pipe is fixedly connected to the air suction port.

Preferably, an air purification device is also fixedly arranged on the air intake pipe, which can filter the air entering the airtight box.

Preferably, the air purification device is activated carbon.

Preferably, the fixed sensor array includes an electronic nose system and a temperature and humidity sensor.

Preferably, the electronic nose system includes several gas sensors.

Preferably, the gas sensors include alcohol and organic solvent sensors, hydrogen sulfide sensors, ammonia and amine sensors, and halogenated hydrocarbon sensors.

Preferably, the transparent material for making the airtight box is acrylic.

Beneficial effects:

(1) A detector of the present invention for measuring the degree of corruption of meat can perform contact detection on the surface of the sample through a mobile sensor probe, and cooperate with an electronic nose system and a temperature and humidity sensor to make a more accurate determination of the degree of corruption of the sample. Among them, the design of the inner spring of the sensor probe guide block can make the sensor probe have a certain telescopic performance and avoid damage to the bottom end of the sensor probe.

(2) A detector of the present invention for measuring the degree of corruption of meat can filter out the interfering gas through the design of the ventilation mechanism, so as to ensure the normal detection of the electronic nose system.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention.

FIG. 2 is a schematic diagram of a mobile sensor probe assembly in the present invention.

FIG. 3 is a schematic diagram of the cooperation of the sensor probe and the sensor probe guide block in the present invention.

FIG. 4 is a schematic structural diagram of the ventilation mechanism in the present invention.

FIG. 5 is a flow chart of the working principle of the present invention.

In the picture: 1- airtight box, 2- controller, 3- display, 4- fixed sensor array, 41- electronic nose system, 42- temperature and humidity sensor, 5- mobile sensor probe assembly, 51- Cartesian coordinate robot , 52-Sensor probe, 53-Sensor probe guide block, 531-Limit slot, 532-Guide hole, 54-Limit block, 55-Top cover, 56-Spring, 6-Ventilation mechanism, 61-Intake pipe, 62-exhaust pipe, 63-air pump, 64-air purification device, 7-sample dish.

Detailed ways

Embodiments of the present invention are further described below with reference to the accompanying drawings.

As shown in Figures 1-5, a detector for measuring the degree of corruption of meat includes a closed box 1, a controller 2, a display 3 and a sensor detection mechanism, and the sensor detection mechanism is arranged on the closed box 1, The controller 2 is electrically connected to the display 3;

The airtight case 1 is made of transparent material, the bottom of which is open, the sample to be tested can be placed in the airtight case 1, and the user can observe the condition of the sample from the outside of the airtight case 1;

The sensor detection mechanism includes a fixed sensor array 4, a mobile sensor probe assembly 5 and a data acquisition module. The fixed sensor array 4 and the data acquisition module are fixedly arranged on the top of the airtight box 1. The sensor probe assembly 5 includes a Cartesian coordinate robot 51 and a sensor probe 52. The installation base of the Cartesian coordinate robot 51 is fixedly connected to the top of the airtight box 1, and the sensor probe 52 is fixedly arranged on the three-dimensional movement output of the Cartesian coordinate robot 51. On the end, the fixed sensor array 4 and the sensor probe 52 are both electrically connected to the data acquisition module, and the data acquisition module and the Cartesian coordinate robot 51 are both electrically connected to the controller 2; through the fixed sensor array 4 and the sensor probe 52 The response signal of the sample in the closed box 1 is obtained, and then converted into a digital signal through the data acquisition module and transmitted to the controller 2. The controller 2 processes the digital signal and classifies the degree of corruption, and the display 3 is used for human-computer interaction.

The mobile sensor probe assembly 5 also includes a sensor probe guide block 53, the sensor probe guide block 53 is fixedly connected to the three-dimensional mobile output end of the Cartesian coordinate robot 51, and a limit position is provided on the top of the sensor probe guide block 53. A groove 531, the bottom of the limit groove 531 is provided with a guide hole 532, and the bottom of the guide hole 532 penetrates the bottom of the sensor probe guide block 53;

The top of the sensor probe 52 penetrates the guide hole 532 and extends into the limiting groove 531 , the top of the sensor probe 52 is fixedly connected to the limiting block 54 , and the top of the sensor probe guide block 53 is fixedly connected to the upper part by bolts. A cover 55, a spring 56 is fixedly connected between the upper cover 55 and the top of the limiting block 54.

The bottom of the spring 56 is welded and fixed to the top of the limiting block 54 .

It also includes a ventilation mechanism 6, the ventilation mechanism 6 includes an air intake pipe 61 and an air extraction pipe 62, the air intake pipe 61 is provided with a first electric valve, and the air extraction pipe 62 is provided with a second electric valve and The air pump 63, the first electric valve, the second electric valve and the air pump 63 are all electrically connected to the controller 2;

An air inlet is opened on the side wall of the airtight box 1, and one end of the air inlet pipe 61 is fixedly connected to the air inlet;

The top of the airtight box 1 is provided with an air suction port, and one end of the air suction pipe 62 is fixedly connected to the air suction port.

An air purifying device 64 is also fixedly arranged on the air intake pipe 61 , which can filter the air entering the airtight box 1 .

The air purification device 64 is activated carbon.

The fixed sensor array 4 includes an electronic nose system 41 and a temperature and humidity sensor 42 .

The electronic nose system 41 includes several gas sensors.

The gas sensors include ethanol and organic solvent sensors, hydrogen sulfide sensors, ammonia and amine sensors, and halogenated hydrocarbon sensors.

The transparent material for making the airtight box 1 is acrylic.

The working principle of this embodiment: the meat sample is placed on the sample pan 7 and placed inside the closed box 1, the first electric valve and the second electric valve are opened by the controller 2, and the closed box 1 is closed by the air pump 63. The air inside is drawn out, and the fresh air is filtered by the air purifying device 64 and then enters the interior of the airtight box 1, so as to eliminate the gas that may interfere with the detection. The sample is sealed at room temperature (about 25°C) for 5-10 minutes, and after the gas at the top of the sealed box 1 reaches a relatively saturated state, the gas parameters volatilized from the sample are collected by the electronic nose system 41 of the fixed sensor array 4 . Because the airtight case 1 is transparent, the internal sample can be observed from the outside of the airtight case 1, and the Cartesian coordinate robot 51 is controlled by the controller 2, so that the sensor probe 52 collects the chemical composition information such as the acidity and alkalinity of the sample surface. Then, the collected signal is converted into a digital signal through the data acquisition module and transmitted to the controller 2, and the controller 2 processes the digital signal and classifies the degree of corruption.

The present invention is a detector for measuring the degree of corruption of meat. The movable sensor probe 52 can perform contact detection on the surface of the sample, and in conjunction with the electronic nose system 41 and the temperature and humidity sensor 42, the degree of corruption of the sample can be more accurately determined. Among them, the design of the spring 56 in the sensor probe guide block 53 can make the sensor probe 52 have a certain telescopic performance and keep the sensor probe 52 in a vertical state to avoid damage to the bottom end of the sensor probe 52.

The present invention is a detector for measuring the degree of corruption of meat. Through the design of the ventilation mechanism 6, the disturbing gas can be filtered out, so as to ensure the normal detection of the electronic nose system 41.

The specific embodiments of the present invention have been described above in detail, but they are only used as examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions to the present invention are also within the scope of the present invention. Therefore, equivalent changes and modifications made without departing from the spirit and scope of the present invention are all included within the scope of the present invention.

Claims (9)

1. a detector for measuring the degree of corruption of meat is characterized in that: It includes a closed box (1), a controller (2), a display (3) and a sensor detection mechanism, the sensor detection mechanism is arranged on the closed box (1), and the controller (2) is electrically connected to the display (3); The airtight box (1) is made of a transparent material, the bottom of which is open, the sample to be tested can be placed in the airtight case (1), and the user can observe the condition of the sample from the outside of the airtight case (1); The sensor detection mechanism includes a fixed sensor array (4), a mobile sensor probe assembly (5) and a data acquisition module, and both the fixed sensor array (4) and the data acquisition module are fixedly arranged in a closed box (1). ), the mobile sensor probe assembly (5) includes a Cartesian coordinate robot (51) and a sensor probe (52), and the mounting base of the Cartesian coordinate robot (51) is fixedly connected in the airtight box (1) At the top, the sensor probe (52) is fixedly arranged on the three-dimensional mobile output end of the rectangular coordinate robot (51), the fixed sensor array (4) and the sensor probe (52) are electrically connected to the data acquisition module, and the The data acquisition module and the Cartesian coordinate robot (51) are both electrically connected to the controller (2); the response signal of the sample in the closed box (1) is obtained through the fixed sensor array (4) and the sensor probe (52), and then the response signal is obtained through the data The acquisition module is converted into a digital signal and transmitted to the controller (2), the controller (2) processes the digital signal and classifies the degree of corruption, and the display (3) is used for human-computer interaction; The mobile sensor probe assembly (5) further includes a sensor probe guide block (53), the sensor probe guide block (53) is fixedly connected to the three-dimensional mobile output end of the Cartesian coordinate robot (51), and the sensor probe The top of the guide block (53) is provided with a limit groove (531), the bottom of the limit groove (531) is provided with a guide hole (532), and the bottom of the guide hole (532) penetrates the sensor probe guide block (53) bottom of; The top end of the sensor probe (52) penetrates the guide hole (532) and extends into the limiting groove (531), the top end of the sensor probe (52) is fixedly connected to the limiting block (54), and the sensor probe guides An upper cover (55) is fixedly connected to the top of the block (53) by bolts, and a spring (56) is fixedly connected between the upper cover (55) and the top of the limiting block (54). 2. a kind of detector according to claim 1, it is characterized in that: The bottom of the spring (56) is welded and fixed to the top of the limiting block (54). 3. a kind of detector according to claim 1, it is characterized in that: It also includes a ventilation mechanism (6), the ventilation mechanism (6) includes an air intake pipe (61) and an air extraction pipe (62), the air intake pipe (61) is provided with a first electric valve, and the air intake pipe (61) is provided with a first electric valve. The air pipe (62) is provided with a second electric valve and an air pump (63), and the first electric valve, the second electric valve and the air pump (63) are all electrically connected to the controller (2); An air inlet is opened on the side wall of the airtight box (1), and one end of the air inlet pipe (61) is fixedly connected to the air inlet; An air suction port is opened on the top of the airtight box (1), and one end of the air suction pipe (62) is fixedly connected to the air suction port. 4. a kind of detector according to claim 3, it is characterized in that: An air purifying device (64) is also fixedly arranged on the air inlet pipe (61), which can filter the air entering the airtight box (1). 5. a kind of detector according to claim 4, it is characterized in that: The air purification device (64) is activated carbon. 6. a kind of detector for measuring the degree of meat corruption according to claim 1, is characterized in that: The fixed sensor array (4) includes an electronic nose system (41) and a temperature and humidity sensor (42). 7. a kind of detector for measuring the degree of corruption of meat according to claim 6, is characterized in that: The electronic nose system (41) includes several gas sensors. 8. a kind of detector for measuring the degree of meat corruption according to claim 7, is characterized in that: The gas sensors include organic solvent sensors, hydrogen sulfide sensors, amine sensors, and halogenated hydrocarbon sensors. 9. a kind of detector according to claim 1, it is characterized in that: The transparent material for making the airtight box (1) is acrylic.

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