A temperature over-limit indicator and method for controlling the quality of delivered products

Abstract

The present application provides a temperature over-limit indicator and a method for controlling the quality of delivered products. The temperature over-limit indicator provided by the present application is used to indicate whether the product bound to the temperature over-limit indicator has experienced an environment exceeding a preset temperature threshold during the delivery process; the temperature over-limit indicator includes a shell, a metal strip, a first contact pad and a second contact pad; the metal strip is arranged inside the shell; the first contact pad and the second contact pad are arranged at both ends of the metal strip in a manner of being electrically connected to the metal strip, and the first contact pad and the second contact pad are exposed on the outer surface of the shell; the melting temperature of the metal strip is less than or equal to the preset temperature threshold; when the product experiences an environment exceeding the preset temperature threshold during the delivery process, the metal strip undergoes an irreversible change, and then melts and breaks; the temperature over-limit indicator provides an indication of whether the product has experienced an environment exceeding the preset temperature threshold during the delivery process through the state of the metal strip when the delivery is completed.

Description

Technical Field

[0001] The present application relates to the technical field of temperature monitoring, and in particular to a temperature over-limit indicator and a method for controlling the quality of delivered products. Background Art

[0002] In industries that are highly sensitive to temperature, such as pharmaceuticals, biotechnology, and semiconductors, it is critical to ensure that products are delivered under low temperature conditions. This requirement is particularly applicable to high-value, highly sensitive products such as vaccines, experimental samples, and semiconductor components. For example, vaccines may lose their activity at higher temperatures, thereby reducing the immune effect; once experimental samples are heated, their composition may change, resulting in inaccurate experimental results; and semiconductor products are more sensitive to temperature, and high temperatures may cause their performance to deteriorate or even fail. Therefore, in order to ensure the stability and reliability of the product, how to monitor the temperature of the product to determine whether the product is exposed to an environment with excessive temperatures during delivery, and then ensure its quality and quality, has become a hot topic of current research. Summary of the invention

[0003] In view of this, the present application provides a temperature over-limit indicator and a method for controlling the quality of delivered products, which are used to accurately and reliably indicate whether the product has experienced an over-temperature environment during the delivery process through the temperature over-limit indicator, so as to ensure the quality of the product.

[0004] Specifically, the present application is implemented through the following technical solutions:

[0005] In a first aspect, the present application provides a temperature over-limit indicator, which is used to indicate whether a product bound to the temperature over-limit indicator has experienced an environment exceeding a preset temperature threshold during delivery; the temperature over-limit indicator includes a housing, a metal strip, a first contact pad and a second contact pad;

[0006] The metal strip is arranged inside the housing; the first contact pad and the second contact pad are arranged at two ends of the metal strip in a manner of being electrically connected to the metal strip, and the first contact pad and the second contact pad are exposed on the outer surface of the housing to constitute a detection port of the temperature over-limit indicator;

[0007] The melting point of the metal strip is less than or equal to the preset temperature threshold; when the product experiences an environment exceeding the preset temperature threshold during the delivery process, the metal strip undergoes an irreversible change, thereby melting and breaking; the temperature over-limit indicator provides an indication of whether the product has experienced an environment exceeding the preset temperature threshold during the delivery process through the state of the metal strip at the time of completion of delivery; the state of the metal strip at the time of completion of delivery is obtained by detection of an external detection device electrically connected to the detection port, and when the external detection device reads the electrical signal, it determines that the state of the metal strip is an unbroken state, and when the electrical signal is not read, it determines that the state of the metal strip is a broken state.

[0008] A second aspect of the present application provides a method for controlling the quality of a delivered product, the method being used to control the quality of a delivered product; the method comprising:

[0009] Bind a temperature over-limit indicator to each product; wherein the temperature over-limit indicator is the temperature over-limit indicator provided in the first aspect of the present application;

[0010] Obtaining the delivery status of the metal strip in the temperature over-limit indicator bound to each product at the time of delivery; wherein the delivery status includes an unbroken state or a broken state;

[0011] For each product, when the delivery status of the metal strip in the temperature over-limit indicator bound to the product is not broken, it is determined that the quality of the product meets the requirements; otherwise, it is determined that the product has experienced an environment exceeding the preset temperature threshold during the delivery process and the quality does not meet the requirements.

[0012] The temperature over-limit indicator provided by the present application is provided by providing a shell, a metal strip, a first contact pad and a second contact pad, and the metal strip is provided inside the shell, the first contact pad and the second contact pad are provided at both ends of the metal strip in a manner of being electrically connected to the metal strip, and the first contact pad and the second contact pad are exposed on the outer surface of the shell to constitute a detection port of the temperature over-limit indicator, and the melting temperature of the metal strip is less than or equal to a preset temperature threshold; thus, on the first hand, by making the melting temperature of the metal strip consistent with the preset temperature threshold of the product, it can be ensured that when the ambient temperature exceeds the preset temperature threshold, the metal strip will undergo irreversible fracture, so as to make a temperature over-limit judgment based on this, and in addition, this irreversible change has high reliability and consistency, which can not only avoid misjudgment , so that the temperature over-limit situation can be accurately recorded, and the possibility of human tampering or restoration of the status can be avoided, ensuring the authenticity and reliability of the temperature control data during the delivery process, which is helpful to improve the quality traceability and regulatory safety of the product; secondly, the key temperature detection function of the temperature over-limit indicator relies on the change of the physical properties of the metal strip, and no independent power supply is required. This passive design reduces the demand for batteries or external power supplies, which not only reduces the overall cost, but also makes it suitable for continuous use in long-term or logistics transportation environments, which can improve durability and applicability; thirdly, the temperature over-limit indicator provided in this embodiment can meet the temperature requirements of different products and industries by selecting metal strips with different melting points, and has a wide range of applications; fourthly, the temperature over-limit indicator has a relatively simple structure, low cost, and is suitable for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of a first embodiment of a temperature over-limit indicator provided by the present application;

[0014] Figure 2 A diagram showing the relationship between a temperature over-limit indicator and a product according to an exemplary embodiment of the present application;

[0015] Figure 3 A schematic diagram showing a metal strip in a temperature over-limit indicator in a broken state according to an exemplary embodiment of the present application;

[0016] Figure 4 A diagram showing the coordination relationship between an external detection device and an over-temperature indicator according to an exemplary embodiment of the present application;

[0017] Figure 5 A schematic diagram of a temperature over-limit indicator shown in an exemplary embodiment of the present application;

[0018] Figure 6 A schematic diagram of a temperature over-limit indicator shown as another exemplary embodiment of the present application;

[0019] Figure 7 This is a flowchart of a first embodiment of a method for controlling the quality of delivered products provided in the present application.

[0020] Description of reference numerals:

[0021] 1: Shell;

[0022] 2: Metal strip;

[0023] 3: first contact pad;

[0024] 4: second contact pad;

[0025] 5: internal detector;

[0026] 6: Indicator light. DETAILED DESCRIPTION

[0027] Here, exemplary embodiments are described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application.

[0028] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used in this article refers to and includes any or all possible combinations of one or more associated listed items.

[0029] It should be understood that although the terms first, second, third, etc. may be used in the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0030] Specific embodiments are given below to introduce the technical solution of the present application in detail.

[0031] Figure 1 This is a schematic diagram of Example 1 of the temperature over-limit indicator provided in this application. Figure 2 This is a diagram showing the relationship between the temperature over-limit indicator and the product according to an exemplary embodiment of the present application. Figure 1 and Figure 2The temperature over-limit indicator provided in this embodiment is used to indicate whether the product bound to the temperature over-limit indicator has experienced an environment exceeding a preset temperature threshold during the delivery process; the temperature over-limit indicator includes a housing 1, a metal strip 2, a first contact pad 3 and a second contact pad 4;

[0032] The metal strip 2 is arranged inside the housing 1; the first contact pad 3 and the second contact pad 4 are arranged at both ends of the metal strip 2 in a manner of being electrically connected to the metal strip 2, and the first contact pad 3 and the second contact pad 4 are exposed on the outer surface of the housing 1 to constitute a detection port of the over-temperature indicator;

[0033] The melting temperature of the metal strip 2 is less than or equal to the preset temperature threshold; when the product experiences an environment exceeding the preset temperature threshold during the delivery process, the metal strip 2 undergoes an irreversible change, thereby melting and breaking; the temperature over-limit indicator provides an indication of whether the product has experienced an environment exceeding the preset temperature threshold during the delivery process through the state of the metal strip 2 at the time of completion of delivery; the state of the metal strip 2 at the time of completion of delivery is obtained by detection of an external detection device electrically connected to the detection port, and when the external detection device reads the electrical signal, it determines that the state of the metal strip 2 is an unbroken state, and when the electrical signal is not read, it determines that the state of the metal strip 2 is a broken state.

[0034] Specifically, in the fields of chemical industry, electronics (such as semiconductors, etc.), pharmaceuticals, biology (such as biologics, vaccines, etc.), food, etc., products are very sensitive to temperature and need to be delivered at low temperatures. For example, for life-saving vaccines, sensitive laboratory samples, and precision electronic components, these products are often extremely sensitive to temperature. If they are exposed to an environment above a certain temperature during transportation or storage, physical or chemical properties may change, and even cause product failure or damage. For example, vaccines may lose their active ingredients at higher temperatures, thereby reducing the immune effect; once the temperature of laboratory samples changes, the data will be inaccurate, affecting the reliability of the research. Similarly, semiconductor components will degrade or be permanently damaged at excessively high temperatures. Therefore, the application of temperature overlimit indicators in these industries is not only related to product quality, but also directly related to human health, safety, and the reliability of scientific and technological innovation.

[0035] When transporting or storing products, it is necessary to monitor the temperature in real time to prevent temperature changes during transportation or storage from affecting product quality. Figure 2The present application provides a temperature over-limit indicator, which is used to be bound to a product during transportation to monitor the temperature changes of the product during transportation and indicate whether the product has experienced an environment exceeding a preset temperature threshold during the delivery process.

[0036] It should be noted that the binding method between the temperature over-limit indicator and the product is set according to actual needs and is not limited in this embodiment. For example, in one embodiment, the binding method between the temperature over-limit indicator and the product can be adhesive, binding with a strap, buckle, etc. Of course, in a possible implementation, the temperature over-limit indicator and the product can also be placed together (closely placed) to achieve binding between the two.

[0037] Referring to the above description, it can be understood that by indicating whether the product has been in an environment exceeding the preset temperature threshold during the delivery process through the temperature indicator, the customer's trust can be improved and the quality and safety of the product can be guaranteed. The preset temperature threshold is the maximum temperature of the product to be delivered in its storage environment that can ensure the product quality.

[0038] It is understood that the temperature over-limit indicator is small in size and low in cost to manufacture, therefore, see Figure 2 When transporting products, a temperature over-limit indicator may be bound to each product so that the temperature of the product can be monitored using the temperature over-limit indicator.

[0039] For details, please refer to Figure 1 The temperature over-limit indicator provided in this embodiment includes a housing 1, a metal strip 2, a first contact pad 3 and a second contact pad 4.

[0040] The specific shape of the housing 1 is set according to actual needs, and is not limited in this embodiment. For example, in a possible implementation, the housing 1 can be a rectangular parallelepiped, a cylindrical shape, etc. In addition, the material of the housing 1 is also set according to actual needs, and is not limited in this embodiment. It should be noted that the material of the housing 1 is a non-conductive material. For example, in a possible implementation, the housing 1 can be made of plastic, ceramic, rubber, silicone, composite material, etc.

[0041] Optionally, in a possible implementation, the housing 1 further has a visual window to allow a user to visually observe the state of the metal strip 2 through the visual window.

[0042] It should be noted that, in one embodiment, the housing 1 may be made of a transparent or translucent material so that the entire housing 1 is visible, and the entire housing 1 constitutes a visible window, allowing the state of the metal strip 2 to be observed through the entire housing 1. In addition, in another embodiment, a hole may be opened at the position of the housing 1 corresponding to the metal strip 2, and then a transparent or translucent material may be covered at the position of the hole to form a visible window at the position of the hole, allowing the user to directly observe the state of the metal strip 2 from the position of the hole.

[0043] Specifically, the metal strip 2 is disposed inside the housing 1. For example, in a specific implementation, the metal strip 2 can be fixed on the inner wall of the housing 1.

[0044] Optionally, in a possible implementation, the material of the metal strip 2 may be a gallium alloy metal strip or a gallium-indium alloy metal strip.

[0045] It should be noted that the material selected for the metal strip 2 is temperature sensitive, and its melting temperature matches the preset temperature threshold that the temperature over-limit indicator needs to monitor. In actual application scenarios, if the ambient temperature exceeds the preset temperature threshold during the transportation of the product, the metal strip 2 will melt and break due to the increase in temperature. This kind of breakage is an irreversible change, so once the ambient temperature exceeds the preset temperature threshold, the metal strip 2 will not be able to return to its original state, which can ensure the reliability and immutability of the detection results.

[0046] In addition, the specific shape of the metal strip 2 is set according to actual needs, and is not limited in this embodiment. For example, in one embodiment, the shape of the metal strip 2 is a flat rectangular parallelepiped. It should be noted that the fixing method of the metal strip 2 and the housing 1 can be an adhesive connection, a nested connection, a snap connection, etc., which is not limited in this embodiment.

[0047] Furthermore, the two ends of the metal strip 2 are electrically connected to the first contact pad 3 and the second contact pad 4 respectively. In addition, the first contact pad 3 and the second contact pad 4 are exposed on the outer surface of the housing 1, and the first contact pad 3 and the second contact pad 4 constitute a detection port of the temperature over-limit indicator.

[0048] Specifically, the specific morphology of the first contact pad 3 and the second contact pad 4 is set according to actual needs, and is not limited in this embodiment. In addition, it can be understood that the first contact pad 3 and the second contact pad 4 are made of conductive materials. For example, in a possible implementation, the first contact pad 3 and the second contact pad 4 are made of platinum, gold, titanium, stainless steel, silver, nickel, etc.

[0049] Please refer to Figure 1It can be understood that one end of the contact pad (the contact pad refers to the first contact pad 3 or the second contact pad 4) is electrically connected to the metal strip 2, and the other end is exposed outside the shell 1. For example, in one possible implementation, an opening matching the contact pad is provided on the shell 1, and the other end of the contact pad passes through the opening and is fixed to the outer surface of the shell 1. It should be noted that the fixing method of the contact pad and the shell 1 is set according to actual needs and is not limited in this embodiment. For example, in one possible implementation, the contact pad can be fixed to the shell 1 by bonding, snapping, etc.

[0050] The working principle of the temperature over-limit indicator provided by this embodiment is introduced below:

[0051] It should be noted that the melting temperature of the metal strip 2 is less than or equal to the preset temperature threshold. In other words, referring to the previous description, the quality of the product will be damaged after the product has been exposed to an environment exceeding the preset temperature threshold. In order to ensure that the temperature of the product can be monitored, the melting temperature of the metal strip 2 in the temperature over-limit indicator is less than or equal to the maximum temperature of the storage environment required for the product (that is, the melting temperature of the metal strip 2 is less than or equal to the preset temperature threshold).

[0052] Referring to the above description, it can be understood that different products have different temperature requirements. Therefore, when using temperature overlimit indicators on different products, different types of temperature overlimit indicators need to be used (it should be noted that the melting temperatures of the metal strip 2 are different, and the types of temperature overlimit indicators are different, that is, the melting temperatures of the metal strip 2 in different types of temperature overlimit indicators are different). For example, in one embodiment, it is necessary to use a temperature overlimit indicator on a vaccine, and the vaccine needs to be stored in an environment of -20°C or below. Therefore, at this time, a first type of temperature overlimit indicator needs to be used, and the melting temperature of the metal strip 2 in the first type of temperature overlimit indicator is less than or equal to -20°C; for another example, in another embodiment, it is necessary to use a temperature overlimit indicator on yogurt, and the yogurt needs to be stored in an environment of 20°C or below. At this time, a second type of temperature overlimit indicator needs to be used, and the melting temperature of the metal strip 2 in the second type of temperature overlimit indicator is less than or equal to 20°C.

[0053] Referring to the above description, it can be understood that the metal strip 2 is a gallium alloy metal strip or a gallium-indium alloy metal strip. Optionally, when the metal strip 2 is a gallium alloy metal strip, the melting temperature of the metal strip 2 is equal to a specified value, and the range of the specified value is [-19°C 200°C]. Optionally, when the metal strip 2 is a gallium-indium alloy metal strip, the melting temperature of the metal strip 2 is equal to a specified value, and the range of the specified value is [15°C 156°C].

[0054] It should be noted that the temperature over-limit indicator provided in this embodiment can meet various temperature monitoring requirements. For example, a lower temperature range (such as about -20°C) may be required in cold chain transportation, while a higher temperature range (such as about 80°C) may be required for electronic product transportation.

[0055] Referring to the previous description, different products correspond to different types of temperature overlimit indicators, and the melting temperatures of the metal strips 2 in different types of temperature overlimit indicators are different. By selecting different materials and adjusting the components in the materials, the metal strips 2 can have a specific melting point. In combination with the above example, for example, when delivering vaccines, the first type of temperature overlimit indicator should be used. The melting point of the metal strip 2 in the first type of temperature overlimit indicator is less than or equal to -20°C. At this time, for example, a gallium alloy metal strip can be selected, and the melting temperature of the gallium alloy metal strip can be set at -20°C by changing the ratio of the gallium alloy metal strip. For another example, when delivering yogurt, the second type of temperature overlimit indicator should be used. The melting temperature of the metal strip 2 in the second type of temperature overlimit indicator is less than or equal to 20°C. At this time, a gallium-indium alloy metal strip can be selected, and the melting temperature of the gallium-indium alloy metal strip can be set at 20°C by changing the ratio of the gallium-indium alloy metal strip.

[0056] Referring to the above description, it can be understood that the melting temperature of the metal strip 2 is less than or equal to the preset temperature threshold. When the temperature in the environment exceeds the preset temperature threshold, the metal strip 2 melts. Further, after the metal strip 2 melts, the metal strip 2 is converted into a liquid state, and the metal strip 2 breaks. That is, when the ambient temperature exceeds the preset temperature threshold, the metal strip 2 will be converted from an unbroken state to a broken state, and this conversion process is irreversible. In this way, it can be judged by observing the state of the metal strip 2 whether the product has experienced an environment exceeding the preset temperature threshold. In other words, the temperature over-limit indicator provides an indication of whether the product has experienced an environment exceeding the preset temperature threshold during the delivery process through the state of the metal strip 2 when the delivery is completed. When the metal strip 2 is not broken, it indicates that the product has not experienced an environment exceeding the preset temperature threshold during the delivery process. When the metal strip 2 is broken, it indicates that the product has experienced an environment exceeding the preset temperature threshold during the delivery process.

[0057] Specifically, Figure 3 This is a schematic diagram showing a metal strip in a temperature over-limit indicator in a broken state according to an exemplary embodiment of the present application. Figure 3 If the product experiences an environment exceeding the preset temperature threshold during the delivery process, the metal strip 2 undergoes irreversible changes and melts and breaks.

[0058] In a specific implementation, in a possible implementation method, the state of the metal strip 2 when the delivery is completed is obtained by detecting an external detection device electrically connected to the detection port, and when the external detection device reads the electrical signal, it determines that the state of the metal strip 2 is an unbroken state, and when the electrical signal is not read, it determines that the state of the metal strip 2 is a broken state.

[0059] Figure 4 This is a diagram showing the coordination relationship between the external detection device and the temperature over-limit indicator according to an exemplary embodiment of the present application. Figure 4 When using an external detection device to check the state of the metal strip 2, the external detection device is electrically connected to the detection port. For example, in one embodiment, the external detection device can be a multimeter, and at this time, the two terminals of the multimeter are electrically connected to the first contact pad 3 and the second contact pad 4 respectively.

[0060] Referring to the previous description, it can be understood that when the metal strip 2 is not broken, due to its conductive properties, the external detection equipment can detect the electrical signal. At this time, it can be determined that the metal strip 2 is in an unbroken state; similarly, after the metal strip 2 melts and breaks, the temperature over-limit indicator is no longer conductive inside because the metal strip 2 is broken, and the external detection equipment cannot detect the electrical signal. At this time, it is determined that the metal strip 2 is in a broken state.

[0061] As described above, the temperature over-limit indicator provided by this embodiment is durable and will not easily fail due to power failure, environmental conditions (will not be affected by environmental conditions such as humidity, ultraviolet rays, air exposure, etc.) or wear. In this way, even under harsh transportation conditions, the temperature over-limit indicator can reliably indicate whether the preset temperature threshold is exceeded. The temperature over-limit indicator is very suitable for scenarios where environmental conditions may change during long-distance transportation or multi-modal transportation.

[0062] The temperature over-limit indicator provided in this embodiment is provided by providing a shell, a metal strip, a first contact pad and a second contact pad, and the metal strip is provided inside the shell, the first contact pad and the second contact pad are provided at both ends of the metal strip in a manner of being electrically connected to the metal strip, and the first contact pad and the second contact pad are exposed on the outer surface of the shell to constitute a detection port of the temperature over-limit indicator, and the melting temperature of the metal strip is less than or equal to a preset temperature threshold; thus, on the first hand, by making the melting temperature of the metal strip consistent with the preset temperature threshold of the product, it can be ensured that when the ambient temperature exceeds the preset temperature threshold, the metal strip will undergo irreversible fracture, so as to make a temperature over-limit judgment based on this, and in addition, this irreversible change has high reliability and consistency, which can not only avoid misjudgment, but also can prevent misjudgment. , so that the temperature over-limit situation can be accurately recorded, and the possibility of human tampering or restoration of the status can be avoided, ensuring the authenticity and reliability of the temperature control data during the delivery process, and helping to improve the quality traceability and regulatory safety of the product; secondly, the key temperature detection function in the temperature over-limit indicator relies on the change of the physical properties of the metal strip, and no independent power supply is required. This passive design reduces the demand for batteries or external power supplies, which not only reduces the overall cost, but also makes it suitable for continuous use for a long time or in environments such as logistics and transportation, which can improve durability and applicability; thirdly, the temperature over-limit indicator provided in this embodiment can meet the temperature requirements of different products and industries by selecting metal strips with different melting points, and has a wide range of applications; fourthly, the temperature over-limit indicator has a relatively simple structure, low cost, and is suitable for mass production.

[0063] Optional, Figure 5 This is a schematic diagram of a temperature over-limit indicator shown in an exemplary embodiment of the present application. Please refer to Figure 5 , the temperature over-limit indicator further comprises an internal detector 5, the internal detector 5 is electrically connected to the first contact pad 3 and the second contact pad 4 respectively; wherein,

[0064] The internal detector 5 is used to detect and display the real-time state of the metal strip 2 in real time; the real-time state of the metal strip 2 includes an unbroken state and a broken state.

[0065] For details, please refer to Figure 5 The internal detector 5 may be installed outside the housing 1 . For example, in one embodiment, the internal detector 5 is installed on the outer surface of the housing 1 .

[0066] It can be understood that the internal detector 5 is always electrically connected to the first contact pad 3 and the second contact pad 4 , and can monitor the real-time status of the metal strip 2 in real time.

[0067] Specifically, in the unbroken state, the metal strip 2 maintains continuity, and the internal detector 5 can detect electrical signals, which means that during transportation or storage, the temperature does not exceed the set safety threshold, and the product maintains an appropriate temperature in a safe environment. Furthermore, in the broken state, since the temperature exceeds the preset temperature threshold, the metal strip 2 breaks due to melting, and the internal detector 5 cannot detect electrical signals. This state indicates that the product may have been exposed to an unsafe high temperature environment, warning that the temperature of the product may have exceeded the limit, affecting its quality or performance.

[0068] Furthermore, the internal detector 5 may be provided with a display screen, which can display the real-time status of the metal strip 2 on the display screen.

[0069] The temperature over-limit indicator provided in this embodiment has a self-detection function by setting an internal detector. The state of the metal bar can be directly confirmed without external detection equipment, which can simplify the detection process and improve the independence of the equipment. In addition, by setting an internal detector, real-time monitoring capability can be further provided to reduce the user's dependence on external detection equipment, so that the user can check the product status at any time and discover temperature anomalies in time, which helps to respond quickly and avoid product damage. Furthermore, in different links of the transportation, storage and delivery process, the staff can check the status of the temperature over-limit indicator at any time through the internal detector to ensure that the product meets the temperature control requirements in the entire supply chain, effectively improving the efficiency of logistics and quality control.

[0070] Optional, Figure 6 This is a schematic diagram of a temperature over-limit indicator shown in another exemplary embodiment of the present application. Figure 6 , the temperature over-limit indicator also includes an indicator light 6, and the indicator light 6 is electrically connected to the internal detector 5; wherein,

[0071] The internal detector 5 is further used to instruct the indicator light 6 to work in a mode corresponding to the real-time state according to the real-time state of the metal strip 2; different real-time states correspond to different working modes.

[0072] For details, please refer to Figure 6 The temperature over-limit indicator also includes an indicator light 6, which is electrically connected to the internal detector 5 and is installed on the outside of the housing 1. The staff can directly observe the working mode of the indicator light 6 to determine the real-time status of the metal strip 2 in the temperature over-limit indicator.

[0073] It should be noted that the indicator light 6 works according to the instruction of the internal detector 5 and in a mode corresponding to the instruction. The instruction of the internal detector 5 corresponds to the real-time state of the metal strip 2, and different real-time states correspond to different working modes.

[0074] In specific implementation, for example, when the metal strip 2 is in an unbroken state, the internal detector 5 instructs the indicator light 6 to work in working mode 1; when the metal strip 2 is in a broken state, the internal detector 5 instructs the indicator light 6 to work in working mode 2.

[0075] It should be noted that the specific content of the working mode of the indicator light 6 is set according to actual needs, and is not limited in this embodiment. For example, in one embodiment, working mode 1 is to turn on the green light, and working mode 2 is to turn on the red light. When the metal strip 2 is in an unbroken state, the internal detector 5 instructs the indicator light 6 to work according to working mode 1, and the indicator light 6 turns on the green light; when the metal strip 2 is in a broken state, the internal detector 5 instructs the indicator light 6 to work according to working mode 2, and the indicator light 6 turns on the red light. In this way, the state of the metal strip 2 can be intuitively determined through the indicator light 6, so as to quickly and accurately determine whether the product has experienced an environment where the temperature exceeds the limit.

[0076] The temperature over-limit indicator provided in this embodiment is provided with an internal detector and an indicator light on the temperature over-limit indicator at the same time. In this way, the indicator light can provide the user with simple and intuitive visual feedback, so that the temperature over-limit status is clear at a glance. Through different working modes (such as on and off status, different colors, and flashing frequency), the real-time status of the metal bar can be directly reflected, and complex equipment connection and operation steps are omitted, which is convenient for users to understand whether the temperature is over-limit at the first time; in addition, through the indication of the indicator light, there is no need to use external detection equipment to read the status of the metal bar. The transport personnel or consignee can directly read the temperature status of the product without professional instruments, which can simplify the operation process and make the detection process more convenient; further, the indicator light can indicate the product status in real time, which is convenient for efficient management in scenarios such as laboratories, pharmaceutical cold chains, and electronic product transportation, and is also convenient for transport personnel or technicians to check at any time; further, the indicator light can provide an instant reminder function, which can significantly improve the safety monitoring of the transportation process, and can enable users to discover temperature abnormalities in time, and then take remedial measures to reduce the risk of product damage, improve the safety of transportation, and avoid product failure or performance degradation due to the failure to discover temperature abnormalities in time.

[0077] Optionally, the internal detector 5 is also used to record the moment when the real-time state of the metal strip 2 changes.

[0078] Specifically, when the real-time state of the metal strip 2 changes, the time when the state changes is recorded, so as to help the staff quickly determine the specific time when the problem occurs based on the record, trace the source of the problem, and then more accurately check the situation when the metal strip 2 breaks, find the cause of the problem, and avoid similar problems from happening again in the future.

[0079] Corresponding to the aforementioned embodiment of a temperature over-limit indicator, the present application also provides an embodiment of a method for controlling the quality of delivered products.

[0080] Figure 7 This is a flowchart of the first embodiment of the method for controlling the quality of delivered products provided by this application. Figure 7 , the method provided in this embodiment includes:

[0081] S101. Bind a temperature-exceeding indicator to each product.

[0082] Specifically, for example, in storage, transportation, etc., a temperature over-limit indicator may be bound to each product. It should be noted that in this step, the temperature over-limit indicator bound to each product is the temperature over-limit indicator provided in the first aspect of the present application.

[0083] Further, optionally, in a possible implementation, binding a temperature over-limit indicator to each product includes:

[0084] For each product in the same batch of products, a temperature-exceeding indicator is bound to the product; wherein the melting temperatures of the metal strips of the temperature-exceeding indicators bound to at least two products in the same batch of products are different.

[0085] For example, multiple types of temperature out-of-limit indicators can be used in the same batch of products to monitor different preset temperature thresholds (e.g., -20°C, 0°C, 4°C), providing flexibility for products that need to be monitored in multiple temperature ranges.

[0086] For example, in the same batch of products, there may be products with different preset temperature thresholds. In this case, the melting temperatures of the metal strips in the temperature over-limit indicators bound to at least two products are different, so as to monitor the temperatures of products with different preset temperature thresholds in the same batch of products.

[0087] S102: Obtain the delivery status of the metal strip in the temperature over-limit indicator bound to each product at the time of delivery; wherein the delivery status includes an unbroken state or a broken state.

[0088] At the time of delivery, the delivery status of the metal strip in the temperature overlimit indicator bound to each product can be obtained. For example, the delivery status can be obtained through an external detection device, an internal detector or an indicator light.

[0089] S103. For each product, when the delivery status of the metal strip in the temperature over-limit indicator bound to the product is not broken, it is determined that the quality of the product meets the requirements; otherwise, it is determined that the product has experienced an environment exceeding a preset temperature threshold during the delivery process and the quality does not meet the requirements.

[0090] Referring to the previous description, it can be understood that when the delivery status is a broken state, it means that the product has experienced an environment exceeding the preset temperature threshold during the delivery process and the quality does not meet the requirements. The method provided in this implementation, by binding a temperature over-limit indicator to each product, can accurately indicate the status of the product through the temperature over-limit indicator when the product is delivered to ensure the quality of the delivered product. The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A temperature over-limit indicator, characterized in that: The temperature over-limit indicator is used to indicate whether the product bound to the temperature over-limit indicator has experienced an environment exceeding a preset temperature threshold during the delivery process; the temperature over-limit indicator includes a housing, a metal strip, a first contact pad and a second contact pad; The metal strip is arranged inside the housing; the first contact pad and the second contact pad are arranged at two ends of the metal strip in a manner of being electrically connected to the metal strip, and the first contact pad and the second contact pad are exposed on the outer surface of the housing to constitute a detection port of the temperature over-limit indicator; The melting temperature of the metal strip is less than or equal to the preset temperature threshold; when the product experiences an environment exceeding the preset temperature threshold during the delivery process, the metal strip undergoes an irreversible change, thereby melting and breaking; the temperature over-limit indicator provides an indication of whether the product has experienced an environment exceeding the preset temperature threshold during the delivery process through the state of the metal strip at the time of completion of delivery; the state of the metal strip at the time of completion of delivery is obtained by detection of an external detection device electrically connected to the detection port, and when the external detection device reads the electrical signal, it determines that the state of the metal strip is an unbroken state, and when the electrical signal is not read, it determines that the state of the metal strip is a broken state.

2. The temperature over-limit indicator according to claim 1, characterized in that: The temperature over-limit indicator further comprises an internal detector, wherein the internal detector is electrically connected to the first contact pad and the second contact pad respectively; wherein, The internal detector is used to detect and display the real-time state of the metal strip in real time; the real-time state of the metal strip includes an unbroken state and a broken state.

3. The temperature over-limit indicator according to claim 2, characterized in that: The temperature over-limit indicator also includes an indicator light, which is electrically connected to the internal detector; wherein, The internal detector is further used to instruct the indicator light to work in a mode corresponding to the real-time state according to the real-time state of the metal strip; wherein different real-time states correspond to different working modes.

4. The temperature over-limit indicator according to claim 2 or 3, characterized in that: The internal detector is also used to record the moment when the real-time state of the metal strip changes.

5. The temperature over-limit indicator according to claim 1, characterized in that: The metal strip is a gallium alloy metal strip or a gallium-indium alloy metal strip.

6. The temperature over-limit indicator according to claim 5, characterized in that: When the metal strip is a gallium alloy metal strip, the melting temperature of the metal strip is equal to a specified value, and the range of the specified value is [-19° C. 200° C.].

7. The temperature over-limit indicator according to claim 5, characterized in that: When the metal strip is a gallium-indium alloy metal strip, the melting temperature of the metal strip is equal to a specified value, and the range of the specified value is [15° C. 156° C.].

8. The temperature over-limit indicator according to claim 5, characterized in that: The metal strips in different types of overtemperature indicators have different melting temperatures.

9. A method for controlling the quality of a delivered product, characterized in that The method is used to control the quality of delivered products; the method comprises: Bind a temperature over-limit indicator to each product; wherein the temperature over-limit indicator is the temperature over-limit indicator according to any one of claims 1 to 8; Obtaining the delivery status of the metal strip in the temperature over-limit indicator bound to each product at the time of delivery; wherein the delivery status includes an unbroken state or a broken state; For each product, when the delivery status of the metal strip in the temperature over-limit indicator bound to the product is not broken, it is determined that the quality of the product meets the requirements; otherwise, it is determined that the product has experienced an environment exceeding the preset temperature threshold during the delivery process and the quality does not meet the requirements.

10. The method according to claim 9, characterized in that The method of binding a temperature over-limit indicator to each product includes: For each product in the same batch of products, a temperature-exceeding indicator is bound to the product; wherein the melting temperatures of the metal strips of the temperature-exceeding indicators bound to at least two products in the same batch of products are different.

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