Meat product freshness detection device

Abstract

The utility model relates to the technical field of food safety detection, and provides a meat product freshness detection device which comprises a shell, a detection element, a circuit board and a display screen, the circuit board is located in the shell, the display screen is fixed to the outer surface of the shell, and the detection element is fixed to the shell and used for collecting the content of basic nitrogen volatilized by meat products; the detection element is electrically connected with the circuit board which is electrically connected with the display screen. Wherein the circuit board can determine the freshness parameter of the meat product according to the volatile basic nitrogen content collected by the detection element, and feed back the freshness parameter to the display screen for display, so that a user can check the freshness parameter, the user can detect the freshness of the meat product in real time, and the meat product freshness detection device is extremely convenient and beneficial to popularization in actual life.

Description

Technical Field

[0001] The utility model relates to the technical field of food safety detection, in particular to a meat product freshness detection device. Background Art

[0002] During the storage process, meat products will emit basic nitrogen in the air. The content of volatile basic nitrogen in the air is one of the important indicators to measure the freshness of meat products.

[0003] Traditional methods for detecting volatile basic nitrogen content are mainly based on chemical analysis techniques such as distillation and Kjeldahl method, and meat samples are analyzed in the laboratory. Alternatively, volatile basic nitrogen is detected using detection devices, such as gas chromatographs or electrochemical workstations. These devices are large in size and not easy to carry, making it difficult to achieve real-time detection of meat products. In addition, they are costly and are not conducive to promotion in real life. Utility Model Content

[0004] The utility model provides a meat product freshness detection device, which at least solves the problem that the current volatile basic nitrogen detection device cannot perform real-time detection on meat products and is not convenient.

[0005] The utility model provides a meat product freshness detection device, comprising: a shell, a detection element, a circuit board and a display screen; the circuit board is located inside the shell, the display screen is fixed to the outer surface of the shell, and the detection element is fixed to the shell, and is used to collect the basic nitrogen content volatilized by the meat product;

[0006] The detection element is electrically connected to the circuit board, and the circuit board is electrically connected to the display screen.

[0007] According to a meat product freshness detection device provided by the utility model, the detection element is an electrochemical gas sensor.

[0008] According to a meat product freshness detection device provided by the utility model, the shell is provided with an air hole communicating with the outside, and the probe of the electrochemical gas sensor is located in the air hole.

[0009] According to a meat product freshness detection device provided by the utility model, it also includes a temperature and humidity sensor, the shell is provided with a ventilation hole connected to the outside, the probe of the temperature and humidity sensor is located in the ventilation hole, and the temperature and humidity sensor is electrically connected to the circuit board.

[0010] According to a meat product freshness detection device provided by the utility model, the shell is provided with a plurality of heat dissipation holes, and the plurality of heat dissipation holes and the ventilation holes are all located on the same side of the shell.

[0011] According to the meat product freshness detection device provided by the utility model, it also includes an indicator light, which is fixed to the outer surface of the shell and is electrically connected to the circuit board.

[0012] According to the meat product freshness detection device provided by the utility model, it also includes a plurality of function keys, the plurality of function keys are located on the outer surface of the housing, the function keys are electrically connected to the circuit board, and are used to input control parameters to the circuit board;

[0013] And / or, the display screen is a touch control screen for inputting control parameters into the circuit board.

[0014] According to a meat product freshness detection device provided by the utility model, it also includes a wireless communication module. The shell is provided with a mounting hole connected to the outside world. The wireless communication module is located in the mounting hole. The communication interface of the wireless communication module is electrically connected to the circuit board.

[0015] According to a meat product freshness detection device provided by the utility model, it also includes a power supply, which is located in the shell. The shell is provided with a charging interface, the charging interface is electrically connected to the power supply, and the power supply is connected to the power supply interface of the circuit board.

[0016] According to a meat product freshness detection device provided by the utility model, the shell is an acrylonitrile-butadiene-styrene resin shell.

[0017] The utility model provides a meat product freshness detection device, wherein a circuit board is located inside a shell, a display screen is fixed on the outer surface of the shell, and a detection element is fixed on the shell for collecting the basic nitrogen content volatilized by the meat product; the circuit board is electrically connected to the detection element, and the freshness parameter of the meat product can be determined according to the volatile basic nitrogen content collected by the detection element; the display screen is electrically connected to the circuit board, and is used to display the freshness parameter of the meat product for viewing by a user, so that the user can detect the freshness of the meat product in real time, which is extremely convenient and is conducive to promotion in real life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the meat product freshness detection device provided by the utility model;

[0020] Figure 2 It is a top view of the meat product freshness detection device provided by the utility model;

[0021] Figure 3 This is a rear view of the meat product freshness detection device provided by the utility model;

[0022] Figure 4 It is a left view of the meat product freshness detection device provided by the utility model.

[0023] Reference numerals:

[0024] 1. Shell; 2. Detection element; 3. Display screen; 4. Temperature and humidity sensor; 5. Indicator light; 6. Function key; 7. Wireless communication module; 11. Ventilation hole; 12. Charging port. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The term "first" or "second" in the specification and claims of the utility model may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, "multiple" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the related objects are in an "or" relationship.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Combine the following Figures 1 to 4 , through specific embodiments and application scenarios, a meat product freshness detection device provided by the embodiment of the utility model is described in detail.

[0030] like Figure 1 As shown, the utility model provides a meat product freshness detection device, comprising: a housing 1, a detection element 2, a circuit board and a display screen 3. The circuit board is located inside the housing 1, the display screen 3 is fixed to the outer surface of the housing 1, and the detection element 2 is fixed to the housing 1, and is used to collect the basic nitrogen content volatilized by the meat product. The detection element 2 is electrically connected to the circuit board, and the circuit board is electrically connected to the display screen 3.

[0031] It is understandable that the traditional method of testing the freshness of meat products is the sensory evaluation method, which mainly requires inspectors to judge the freshness of meat products from the perspectives of vision, smell, touch and taste. This method is simple and convenient, and does not require the use of other tools and indicators, but it has relatively high requirements for the experience of inspectors. In addition, factors such as the age and physical condition of the staff will also affect the inspection results. It is highly subjective and cannot objectively monitor the freshness of meat products.

[0032] It is understandable that meat products will volatilize basic nitrogen during storage. The meat product freshness detection device provided by the utility model mainly determines the freshness of meat products by collecting the basic nitrogen concentration volatilized by meat products. Figure 1 As shown, the housing 1 is rectangular and has a small size, so it is easy to carry.

[0033] Furthermore, if Figure 1 As shown, the detection element 2 is arranged on the housing 1, and is used to detect the basic nitrogen content of the meat product volatilization. When in use, the meat product freshness detection device and the meat product can be placed in a closed space together, such as a refrigerator or a cabinet. The detection element 2 can be arranged inside the housing 1. A plurality of air inlet holes are arranged on the housing 1 so that the volatile basic nitrogen can enter the interior of the housing 1, so that the detection element 2 can detect the volatile basic nitrogen. The detection element 2 can also be arranged outside the housing 1, and the volatile basic nitrogen does not need to enter the housing 1. The detection element 2 can quickly detect the volatile basic nitrogen in the air.

[0034] The circuit board is electrically connected to the detection element 2, and can determine the freshness parameter of the meat product based on the basic nitrogen content of the meat product volatilized by the detection element 2. Figure 1 and Figure 2 As shown, the display screen 3 is mounted on the outer surface of the housing 1 and is electrically connected to the circuit board. The display screen 3 is used to display the freshness parameters of the meat product for the user to view. Optionally, the display screen 3 can be a liquid crystal display screen.

[0035] The utility model provides a meat product freshness detection device, wherein a circuit board is located inside a shell 1, a display screen 3 is fixed to the outer surface of the shell 1, and a detection element 2 is fixed to the shell 1 and is used for collecting the basic nitrogen content volatilized by the meat product; the circuit board is electrically connected to the detection element 2, and can determine the freshness parameter of the meat product according to the volatile basic nitrogen content collected by the detection element 2; the display screen 3 is electrically connected to the circuit board and is used for displaying the freshness parameter of the meat product for a user to view; the user can detect the freshness of the meat product in real time, which is extremely convenient and is conducive to promotion in real life.

[0036] Optionally, the detection element 2 is an electrochemical gas sensor. An electrochemical gas sensor is a sensor that detects gas concentration by measuring the electrochemical reaction between gas and electrodes. When volatile basic nitrogen contacts the electrode surface of the electrochemical sensor, the volatile basic nitrogen reacts with the substance on the electrode surface to generate a current or voltage signal. This signal is proportional to the gas concentration and can therefore be used to determine the content of volatile basic nitrogen. The electrochemical gas sensor can detect changes in the concentration of volatile basic nitrogen in a short period of time and has the characteristics of high sensitivity and high stability.

[0037] like Figure 1 and Figure 2 As shown, the housing 1 is provided with an air hole 11 connected to the outside. The probe of the electrochemical gas sensor is located in the air hole 11, and there is no need to wait for the volatile basic nitrogen to enter the housing 1, so that the real-time monitoring of the volatile basic nitrogen is achieved. Exposing the probe of the electrochemical gas sensor directly to the outside air can make it easier for the electrochemical gas sensor to detect the presence of volatile basic nitrogen, which can improve the sensitivity and response speed of the electrochemical gas sensor, so that it can more accurately detect the concentration change of volatile basic nitrogen.

[0038] At the same time, the air holes 11 can play a certain protective role on the electrochemical gas sensor, and can prevent large particles from entering the electrochemical gas sensor, thereby extending the service life of the electrochemical gas sensor and maintaining its stable performance. The electrochemical gas sensor is hidden in the air holes 11, and the probe of the electrochemical gas sensor is prevented from being directly exposed to the outer surface of the housing 1, thereby ensuring the aesthetics of the meat product freshness detection device.

[0039] The temperature and humidity environment of meat products has a great influence on the preservation of their freshness. Figure 3 As shown, the meat product freshness detection device further includes a temperature and humidity sensor 4. The housing 1 is provided with a ventilation hole communicating with the outside, a probe of the temperature and humidity sensor 4 is located in the ventilation hole, and the temperature and humidity sensor 4 is electrically connected to the circuit board.

[0040] It is understandable that the temperature and humidity sensor 4 is used to collect the temperature and humidity information of the environment where the meat product is located. When in use, various components in the housing 1 will emit a certain amount of heat. The probe of the temperature and humidity sensor 4 is arranged in the ventilation hole to ensure that the temperature and humidity sensor 4 is in a good ventilation environment, to avoid affecting the detection effect of the temperature and humidity sensor 4 due to the heating of the components, and to ensure the accuracy of the collected temperature and humidity of the environment where the meat product is located.

[0041] The temperature and humidity sensor 4 is electrically connected to the circuit board and can send temperature and humidity information to the circuit board. The circuit board is electrically connected to the display screen 3 and can feed back the temperature and humidity information to the display screen 3 for display. Thus, the temperature and humidity information of the environment where the meat product is located and its freshness parameters can be displayed on the display screen 3 accordingly. The user can understand the freshness changes of the meat product under different temperatures and humidities.

[0042] In some embodiments, the housing 1 is provided with a plurality of heat dissipation holes, and the plurality of heat dissipation holes and the ventilation holes are all located on the same side of the housing 1 .

[0043] It is understandable that a plurality of heat dissipation holes are provided on the housing 1, so that the heat emitted by various components can be quickly discharged from the housing 1, which helps to improve the heat dissipation efficiency. When in use, the heat in the housing 1 is discharged through the heat dissipation holes, which reduces the heat retention inside the device, reduces the internal temperature of the entire device, and improves the stability and reliability of the device. At the same time, arranging the heat dissipation holes and the ventilation holes on the same side of the housing 1 can provide a better ventilation environment for the temperature and humidity sensor 4, ensuring the accuracy of the detection of the temperature and humidity sensor 4.

[0044] In some embodiments, Figure 1 and Figure 2 As shown, the meat product freshness detection device further includes an indicator light 5. The indicator light 5 is fixed to the outer surface of the housing 1, and the indicator light 5 is electrically connected to the circuit board.

[0045] It is understandable that the indicator light 5 can be an LED indicator light. There are three LED indicator lights, which are blue, green and red respectively when powered on. The circuit board is connected to the three LED indicator lights respectively, and can control the working state of each LED indicator light.

[0046] When the device is turned on, the circuit board controls the blue LED indicator to be always on; when the circuit board determines that the currently detected volatile basic nitrogen content is less than the threshold value, the circuit board controls the green LED indicator to be always on; when the circuit board determines that the currently detected volatile basic nitrogen content exceeds the threshold value, the circuit board controls the red LED indicator to be always on.

[0047] Furthermore, the meat product freshness detection device also includes an alarm. The alarm is fixed to the outer surface of the housing 1, and the alarm is electrically connected to the circuit board. The circuit board determines whether the current freshness parameter exceeds the threshold value based on the volatile basic nitrogen content collected by the detection element 2. When the freshness parameter exceeds the threshold value, the circuit board controls the red LED indicator to be always on and controls the alarm to sound an alarm to remind the user that the freshness of the meat product does not meet the standard.

[0048] Optionally, the alarm device is a buzzer.

[0049] In some embodiments, Figure 1 and Figure 2 As shown, the meat product freshness detection device further includes a plurality of function keys 6, which are all located on the outer surface of the housing 1. The function keys 6 are electrically connected to the circuit board and are used to input control parameters to the circuit board.

[0050] It is understandable that the multiple function keys 6 are all located on the same side of the housing 1 to facilitate user operation. The multiple function keys 6 are arranged side by side. Each function key 6 is electrically connected to the circuit board and is used to input control parameters to the circuit board.

[0051] For example, the function key 6 may be a timing key, and the user presses the timing key to set the acquisition time of the detection element 2 and the temperature and humidity sensor 4. Alternatively, the function key 6 may be a threshold key, and the user adjusts the standard freshness parameter of the meat product by operating the threshold key.

[0052] Function key 6 can also be a power on key and a power off key to control the power on and off of the circuit board and various components. Function key 6 can also be a detection key. When the user presses the detection key, the circuit board can control the detection element 2 and the temperature and humidity sensor 4 to start collecting volatile basic nitrogen content and temperature and humidity information. Alternatively, function key 6 is a restart key. When the user presses the restart key, the entire device can be reset and the previously collected data in the device can be cleared.

[0053] In other embodiments, the display screen 3 is a touch control screen for inputting control parameters to the circuit board. The user can implement the above control operations on the circuit board and various components by sequentially touching the relevant instructions on the touch control screen, which is convenient and fast, and enhances the user's sense of human-computer interaction.

[0054] In some embodiments, Figure 3As shown, the meat product freshness detection device provided by the utility model also includes a wireless communication module 7. The communication interface of the wireless communication module 7 is electrically connected to the circuit board for communication with an external electronic device or computer. The circuit board can send the freshness parameters of the meat product to an external electronic device or computer through the wireless communication module 7, which is convenient for users to check. When the freshness parameters need to be transmitted to an external computer or mobile phone APP, the user only needs to press the upload button in the multi-function button 6, and the circuit board can send the freshness parameters to an external computer or mobile phone APP through the wireless communication module 7.

[0055] Optionally, the wireless communication module 7 may be a Bluetooth module, a WIFI module, a 5G module, etc. The wireless communication module 7 is configured with an antenna, through which a radio frequency signal is sent to a base station antenna and an electromagnetic wave signal is received from the base station antenna, thereby realizing the connection between the meat product freshness detection device and an external communication network.

[0056] The housing 1 is provided with a mounting hole communicating with the outside world. The wireless communication module 7 is located in the mounting hole to ensure the communication quality of the antenna. In a specific embodiment, the wireless communication module 7 is a wifi serial port module of the esp8266 model.

[0057] When the wireless communication module 7 is a Bluetooth module, the Bluetooth module is connected to the circuit board. The Bluetooth module is adapted to the Bluetooth component on the external electronic device. Data is transmitted between the Bluetooth module and the Bluetooth component through wireless Bluetooth technology, so that the circuit board sends the freshness parameter to the electronic device, and the external electronic device remotely controls the meat product freshness detection device.

[0058] Furthermore, the meat product freshness detection device provided by the utility model also includes a power supply. The power supply is located in the housing 1. Optionally, the power supply can be a rechargeable battery such as a lithium battery. Figure 4 As shown, the housing 1 is provided with a charging interface 12, which is electrically connected to the power supply for charging the power supply. The power supply is connected to the power supply interface of the circuit board to power the circuit board and various components. Optionally, the charging interface 12 can be a USB interface, a Type-C interface or a Light interface.

[0059] Optionally, the shell 1 is an acrylonitrile-butadiene-styrene resin shell. The shell 1 can be prepared and formed using acrylonitrile-butadiene-styrene stereolithography resin. The acrylonitrile-butadiene-styrene resin shell has excellent physical and chemical properties, has high strength and rigidity, and has good corrosion resistance. It can provide good mechanical support and protection for the entire meat product freshness detection device, and is not easily corroded by chemicals. The acrylonitrile-butadiene-styrene resin shell also has good impact resistance, and can buffer and protect its internal components when subjected to external impact. In addition, the acrylonitrile-butadiene-styrene resin shell is easy to process and can be manufactured into a variety of shapes by injection molding and other methods, and has good applicability.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A meat product freshness detection device, characterized in that: include: A housing, a detection element, a circuit board and a display screen; the circuit board is located inside the housing, the display screen is fixed to the outer surface of the housing, and the detection element is fixed to the housing, and is used to collect the basic nitrogen content volatilized by meat products; The detection element is electrically connected to the circuit board, and the circuit board is electrically connected to the display screen.

2. The meat product freshness detection device according to claim 1, characterized in that: The detection element is an electrochemical gas sensor.

3. The meat product freshness detection device according to claim 2, characterized in that: The shell is provided with a vent hole communicating with the outside, and the probe of the electrochemical gas sensor is located in the vent hole.

4. The meat product freshness detection device according to claim 1, characterized in that: It also includes a temperature and humidity sensor. The shell is provided with a ventilation hole connected to the outside. The probe of the temperature and humidity sensor is located in the ventilation hole. The temperature and humidity sensor is electrically connected to the circuit board.

5. The meat product freshness detection device according to claim 4, characterized in that: The shell is provided with a plurality of heat dissipation holes, and the plurality of heat dissipation holes and the ventilation holes are all located on the same side of the shell.

6. The meat product freshness detection device according to claim 1, characterized in that: It also includes an indicator light, which is fixed to the outer surface of the shell and is electrically connected to the circuit board.

7. The meat product freshness detection device according to claim 1, characterized in that: It also includes a plurality of function keys, which are all located on the outer surface of the housing, and are electrically connected to the circuit board and are used to input control parameters to the circuit board; And / or, the display screen is a touch control screen for inputting control parameters into the circuit board.

8. The meat product freshness detection device according to claim 1, characterized in that: It also includes a wireless communication module. The shell is provided with a mounting hole communicating with the outside. The wireless communication module is located in the mounting hole. The communication interface of the wireless communication module is electrically connected to the circuit board.

9. The meat product freshness detection device according to claim 1, characterized in that: It also includes a power supply, which is located in the shell. The shell is provided with a charging interface, the charging interface is electrically connected to the power supply, and the power supply is connected to the power supply interface of the circuit board.

10. The meat product freshness detection device according to claim 1, characterized in that: The shell is an acrylonitrile-butadiene-styrene resin shell.

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