CN108382729B

CN108382729B - Packaging box with NFC chip and control method thereof

Info

Publication number: CN108382729B
Application number: CN201810059032.7A
Authority: CN
Inventors: 郭小军; 周浩宇; 李思莹; 朱璐瑶
Original assignee: Shanghai Jiaotong University
Current assignee: Shanghai Jiaotong University
Priority date: 2018-01-22
Filing date: 2018-01-22
Publication date: 2020-02-18
Anticipated expiration: 2038-01-22
Also published as: CN108382729A

Abstract

The invention relates to the technical field of product packaging, in particular to a packaging box with an NFC chip and a control method thereof. The packing carton that possesses NFC chip includes a sealed box body, still includes: a substrate adhered to an inner surface of the case; the sensing module is arranged in the substrate and comprises a gas sensor and a humidity sensor; the NFC chip is arranged in the substrate and is connected with the sensing module; the NFC chip comprises a detection module for detecting the temperature inside the box body, and the detection module calculates the temperature inside the box body through a temperature-sensitive resistor with a positive temperature coefficient and a first weight corresponding to the temperature-sensitive resistor, and a temperature-sensitive resistor with a negative temperature coefficient and a second weight corresponding to the temperature-sensitive resistor. The invention solves the problem of accurately knowing the product quality in the packaging box under the condition of not dismantling the packaging box, and improves the use experience of users.

Description

Packaging box with NFC chip and control method thereof

Technical Field

The invention relates to the technical field of product packaging, in particular to a packaging box with an NFC chip and a control method thereof.

Background

The intelligent packaging technology is an emerging technology branch integrating the field of multivariate knowledge. The packaging box is added with technologies in the fields of machinery, electricity, electronics, chemistry and the like, so that the packaging box not only has the traditional product packaging function, but also has some special functions, such as anti-counterfeiting function, according to the characteristics of the packaged product and/or the needs of users. The addition of the NFC (Near Field Communication) chip enables the packaging box to be more user-friendly, enables human-computer interaction to be more convenient and fast, and also enables intelligent packaging to be gradually applied to the Field of Internet of things.

However, most of the packaging boxes with the NFC chips in the market have single functions, and only the anti-counterfeiting function of the product can be realized, so that the application range is limited. However, before purchasing the goods, the user needs to know the authenticity of the goods and also needs to know the quality of the products in the packing box without removing the packing box so as to avoid purchasing the overdue deteriorated products. Particularly in the field of food, people generally judge whether products in a box are overdue or not by looking at the quality guarantee period on the packaging box, but due to improper storage modes, the food in the quality guarantee period may deteriorate and cannot be eaten. The quality of the food in the packaging box is judged to be too flat only by depending on the product parameters on the packaging box, and sometimes even the user wrongly judges the quality of the product in the packaging box and eats deteriorated food by mistake, so that the health of the user is damaged.

Therefore, how to accurately know the quality of the product in the packaging box without dismantling the packaging box is a technical problem to be solved urgently at present.

Disclosure of Invention

The invention provides a packaging box with an NFC chip and a control method thereof, which are used for solving the problem that the product quality in the packaging box cannot be accurately known under the condition that the packaging box is not dismounted in the prior art and improving the use experience of a user.

In order to solve the above problem, the present invention provides a package with an NFC chip, including a sealed case, further including: a substrate adhered to an inner surface of the case; the sensing module is arranged in the substrate and comprises a gas sensor and a humidity sensor, the gas sensor is used for detecting the gas concentration inside the box body and transmitting the gas concentration to the NFC chip, and the humidity sensor is used for detecting the humidity inside the box body and transmitting the humidity to the NFC chip; the NFC chip is arranged in the substrate and is connected with the sensing module; the NFC chip comprises a detection module for detecting the temperature inside the box body, and the detection module calculates the temperature inside the box body through a temperature-sensitive resistor with a positive temperature coefficient and a first weight corresponding to the temperature-sensitive resistor, and a temperature-sensitive resistor with a negative temperature coefficient and a second weight corresponding to the temperature-sensitive resistor.

Preferably, the NFC chip further includes a control module and a storage module; the control module is connected with the storage module, the sensing module and the detection module and used for transmitting the received gas concentration information, the received humidity information and the received temperature information to the storage module for storage.

Preferably, the anti-counterfeiting label is coated on the outer surface of the box body; the NFC chip is connected with the anti-counterfeiting label and used for acquiring the current anti-counterfeiting information of the anti-counterfeiting label and transmitting the current anti-counterfeiting information to the storage module for storage, and the initial anti-counterfeiting information of the anti-counterfeiting label is also stored in the storage module.

Preferably, the anti-counterfeit label further comprises a strip tearing opening located on the box body, the strip tearing opening is used for disassembling the box body, and the anti-counterfeit label is coated on the strip tearing opening.

Preferably, the NFC chip further includes a radio frequency module; the radio frequency module is connected with the control module and used for transmitting the information stored in the storage module to a mobile terminal.

Preferably, the gas sensor, the humidity sensor and the anti-counterfeit label all comprise series voltage division circuits formed by variable resistors and constant resistors.

Preferably, the device further comprises a flexible battery mounted in the substrate; the flexible battery is connected with the NFC chip and used for supplying power to the NFC chip.

Preferably, the device further comprises a flexible switch; the first end of flexible switch is connected NFC chip, second end are connected flexible battery, control end follow the box body is inside to be extended to the box body is outside, be used for control flexible battery with whether the NFC chip switches on.

In order to solve the above problem, the present invention further provides a method for controlling a packaging box with an NFC chip, including any one of the above packaging boxes with an NFC chip, including the steps of: the NFC chip receives an instruction sent by a mobile terminal for acquiring the internal parameters of the box body; the NFC chip controls the sensing module to acquire gas concentration information and relative humidity information inside the box body and transmit the information to the mobile terminal, and controls the detection module to acquire temperature information inside the box body and transmit the information to the mobile terminal.

Preferably, the specific step of the NFC chip controlling the detection module to acquire the temperature information inside the cartridge includes:

providing a temperature-sensitive resistor with a positive temperature coefficient and a temperature-sensitive resistor with a negative temperature coefficient, wherein the temperature-sensitive resistor with the positive temperature coefficient and the temperature-sensitive resistor with the negative temperature coefficient are both used for detecting the temperature in the box body;

performing linear regression processing on a plurality of standard first temperature data which are directly stored in the NFC chip and correspond to the temperature sensitive resistor with the positive temperature coefficient and a plurality of temperature values inside the box body which correspond to the standard first temperature data one by one to obtain a first straight line; performing linear regression processing on a plurality of standard second temperature data which are directly stored in the NFC chip and correspond to the temperature sensitive resistors with negative temperature coefficients and a plurality of temperature values inside the box bodies which correspond to the standard second temperature data one by one to obtain a second straight line;

taking an intersection point of the first straight line and the second straight line as a reference point;

acquiring current first temperature data which are directly stored in the NFC chip and correspond to the temperature-sensitive resistor with the positive temperature coefficient, and current second temperature data which correspond to the temperature-sensitive resistor with the negative temperature coefficient;

substituting the current first temperature data into the first straight line to obtain a first coordinate point, and substituting the current second temperature data into the second straight line to obtain a second coordinate point;

connecting the reference point and the first coordinate point to obtain a third straight line, and connecting the reference point and the second coordinate point to obtain a fourth straight line;

obtaining a first weight corresponding to the temperature-sensitive resistor with the positive temperature coefficient and a second weight corresponding to the temperature-sensitive resistor with the negative temperature coefficient according to the difference between the first straight line and the third straight line and the difference between the second straight line and the fourth straight line;

and calculating according to the first weight, the second weight, the first coordinate point and the second coordinate point to obtain the temperature serving as the temperature inside the box body.

According to the packing box with the NFC chip and the control method thereof, the detection module for detecting the temperature inside the box body is integrated in the NFC chip, and the sensing module connected with the NFC chip is arranged to detect the gas concentration and the humidity inside the box body, so that the real-time detection of various parameters inside the box body is realized, the quality of products inside the box body can be judged through the comprehensive analysis of various parameters, the problem that the quality of the products inside the packing box can be accurately known under the condition that the packing box is not dismounted is solved, the users are prevented from buying inferior or deteriorated products, and the use experience of the users is improved.

Drawings

Fig. 1 is a schematic structural diagram of a first angle of a package box with an NFC chip according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a second angle of the packaging box with the NFC chip according to the embodiment of the present invention;

fig. 3 is a block diagram of a package box having an NFC chip according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of the connection between the package box with the NFC chip and the flexible battery according to the embodiment of the present invention;

fig. 5 is a schematic structural diagram of connection between a sensing module, an anti-counterfeit tag, and an NFC chip in a package box with an NFC chip according to an embodiment of the present invention;

fig. 6 is a flowchart of a method for controlling a package having an NFC chip according to an embodiment of the present invention.

Detailed Description

The following describes in detail a specific embodiment of a package with an NFC chip and a control method thereof according to the present invention with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a first angle of a packaging box with an NFC chip according to an embodiment of the present invention, fig. 2 is a schematic structural diagram of a second angle of a packaging box with an NFC chip according to an embodiment of the present invention, and fig. 3 is a block structural diagram of a packaging box with an NFC chip according to an embodiment of the present invention.

As shown in fig. 1 to 3, the package with an NFC chip provided in this embodiment includes a sealed case 11, a substrate 12, a sensing module 13, and an NFC chip 14. Wherein the box body 11 forms a receiving cavity for receiving a product, such as food, etc. The specific shape of the box body 11 can be set by those skilled in the art according to actual needs, and can be, but is not limited to, any polyhedron or sphere. The package 11 in this embodiment is preferably a package for packaging food products, since the deterioration or decay of the food product may cause changes in various parameters of the surrounding environment, such as changes in the concentration of certain sensitive gases.

In order to realize that the quality of the product in the box can be accurately known under the condition that the packaging box is not detached, the packaging box with the NFC chip provided by the specific embodiment further comprises: a substrate 12 adhered to an inner surface of the case 11; a sensing module 13 installed in the substrate 12, and including a gas sensor 131 and a humidity sensor 132, wherein the gas sensor 131 is configured to detect a gas concentration inside the cartridge 11 and transmit the gas concentration to the NFC chip 14, and the humidity sensor 132 is configured to detect a humidity inside the cartridge 11 and transmit the humidity to the NFC chip 14; an NFC chip 14 mounted in the substrate 12 and connected to the sensing module 13; the NFC chip 14 includes a detection module 142 for detecting the temperature inside the case 11, and the detection module 142 obtains the temperature inside the case 11 through calculation by using a temperature sensitive resistor with a positive temperature coefficient and a first weight corresponding thereto, and a temperature sensitive resistor with a negative temperature coefficient and a second weight corresponding thereto. That is, in the present embodiment, the sensing module 13 and the NFC chip connected to the substrate 12 are both located inside the case 11, so as to measure various parameters inside the case 11. And the temperature-sensitive resistor with the positive temperature coefficient is matched with the temperature-sensitive resistor with the negative temperature coefficient to realize the calibration and detection of the internal temperature of the box body 11, so that the accuracy and the reliability of temperature detection are improved. The specific types of the gas sensor 131 and the humidity sensor 132 can be selected by those skilled in the art according to actual needs, for example, according to the properties of the product stored inside the box 11, which is not limited in this embodiment. The NFC chip 14 is preferably provided with a silicon-based substrate. In order to adhere the substrate 12 tightly to the inner surface of the case 11 and allow the substrate 12 to withstand a certain degree of bending, it is preferable that the substrate 12 is a flexible substrate, such as a PCB (Printed Circuit Board) flexible substrate.

Preferably, the NFC chip 14 further includes a control module 141 and a storage module 143; the control module 141 is connected to the storage module 143, the sensing module 13, and the detection module 142, and configured to transmit the received gas concentration information, humidity information, and temperature information to the storage module 143 for storage. So that the user can check the gas concentration information, the humidity information and the temperature information in the box body 11 in the following process, and analyze the product quality in the box body 11 according to the parameter information.

As shown in fig. 3, the NFC chip 14 in this embodiment further includes a power supply unit 146 and a clock unit 147; the power supply unit 146 is configured to provide power for each electronic component in the NFC chip 14; the clock unit 147 serves as a system clock of the NFC chip 14.

Preferably, the package box with the NFC chip provided in this embodiment further includes an anti-counterfeit label 15 wrapped on the outer surface of the box body 11; the NFC chip 14 is connected to the anti-counterfeit label 15, and is configured to acquire current anti-counterfeit information of the anti-counterfeit label 15 and transmit the current anti-counterfeit information to the storage module 143 for storage, where the initial anti-counterfeit information of the anti-counterfeit label 15 is further stored in the storage module 143. In this way, the user can determine whether the product inside the box 11 is true or false and whether the anti-counterfeit label 15 is damaged by comparing whether the current anti-counterfeit information of the anti-counterfeit label 15 is matched with the initial anti-counterfeit information stored in the storage module 143. More preferably, the package box with the NFC chip further includes a strip-shaped tear-off opening 16 located on the box body 11, where the strip-shaped tear-off opening 16 is used for detaching the box body 11, and the anti-counterfeit label 15 covers the strip-shaped tear-off opening 16. Thus, when the box body 11 is disassembled once, the anti-counterfeiting label 15 can be damaged, thereby further improving the anti-counterfeiting effect. The specific form of the anti-counterfeit label 15 can be set by those skilled in the art according to actual needs, such as a flexible printed encryption circuit.

Specifically, the NFC chip 14 further includes a signal acquisition module 145, and the signal acquisition module 145 includes an analog-to-digital conversion circuit unit and an interface unit for connecting with the sensing module 13 and the anti-counterfeit label 15. The interface unit receives the information transmitted by the sensing module 13 and the anti-counterfeit label 15, processes the information by the analog-to-digital conversion circuit unit, and transmits the processed information to the storage module 143 for storage. Through be in integrated in the NFC chip 14 signal acquisition module 145 can provide antifalsification label 15 gas sensor 131 with humidity transducer 132 with NFC chip 14 lug connection's interface has simplified holistic circuit structure in the packing carton that possesses the NFC chip for the packing carton overall structure who possesses the NFC chip tends to simplify.

In order to facilitate a user to visually, accurately and timely know information of various parameters inside the box body 11, preferably, the NFC chip 14 further includes a radio frequency module 144; the radio frequency module 144 is connected to the control module 141, and configured to transmit the information stored in the storage module 143 to a mobile terminal 31. The mobile terminal 31 may be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a desktop computer, and the like. The mobile terminal 31 is preferably a mobile terminal supporting full function NFC communication. By supporting full function NFC communication is meant support for NFC card reading, card writing, card emulation, and P2P modes. Specifically, the radio frequency module 144 includes an NFC analog front end unit and an instruction parsing unit; the NFC analog front end unit is configured to receive a data instruction sent by the mobile terminal 31 and send data to the mobile terminal 31; the command parsing unit is configured to parse a data command received from the mobile terminal 31 into a corresponding integrated circuit signal and transmit the integrated circuit signal to the control module 141 of the NFC chip 14, for example, a hexadecimal command "2 A1B" sent by the mobile terminal 31 is parsed into a "read and store" operation.

Fig. 5 is a schematic structural diagram of connection between a sensing module, an anti-counterfeit label, and an NFC chip in a package box with an NFC chip according to an embodiment of the present invention. The gas sensor 131 and the humidity sensor 132 may be, but not limited to, resistance type sensors, and those skilled in the art can select them according to actual needs. In order to accurately detect each parameter inside the box 11, it is preferable that the gas sensor 131, the humidity sensor 132, and the anti-counterfeit label 15 each include a series voltage-dividing circuit composed of a variable resistor and a constant resistor.

Specifically, as shown in fig. 5, the anti-counterfeit label 15 includes a series voltage dividing circuit composed of a first variable resistor R1 and a first constant resistor R2, and the series voltage dividing point of the first variable resistor R1 and the first constant resistor R2 is connected to the signal acquisition module 145 in the NFC chip 14 by a wire lead interface, that is, the voltage V at the series voltage dividing point is connected to the signal acquisition module 145_{out_1}To the signal acquisition module 145. For example: if the ratio of the initial resistance of the first variable resistor R1 to the resistance of the first fixed-value resistor R2 is R1: r2 ═ 4:1, then V_{out_1}R2/(R1+ R2) ═ 1/5 × Vcc, and the binary code is 00110011; if R1: r2 is 1:4, then V_{out_1}R2/(R1+ R2) 4/5 × Vcc, and the conversion to binary code is 11001100. Before the product in the packing box is sold, the binary code is set as initial anti-counterfeiting information and stored in the storage module 143, and when the current anti-counterfeiting information (namely, the current binary code) read by the user through the NFC chip 14 is inconsistent with the initial anti-counterfeiting information stored in the storage module 143, it can be confirmed that the anti-counterfeiting label 15 is damaged.

Similarly, the gas sensor 131 includes a series voltage-dividing circuit composed of a second variable resistor R3 and a second constant resistor R4, wherein the second variable resistor R3 is a resistor sensitive to gas concentration, and R4 is a constant resistor not affected by gas concentration; the serial partial voltage of the second variable resistor R3 and the second constant resistor R4 is connected with the signal acquisition module 145 in the NFC chip 14 by a lead-out interface, namely, the voltage V at the serial partial voltage is_{out_2}To the signal acquisition module 145. For example: before the product in the packaging box is sold, the ratio of the initial resistance value of the second variable resistor R3 to the resistance value of the second fixed resistor R4 is R3: r4 is 1:1, then V_{out_2}R4/(R3+ R4) ═ 1/2 × Vcc, the binary code converted to 01111111, which is also stored in the memory module 143; when the product is stored inside the box body 11After a period of time, the product inside the box body 11 releases the sensitive gas, so that the concentration of the sensitive gas inside the box body 11 increases, the corresponding resistance value of the second variable resistor R3 changes, and finally the resulting V is_{out_2}If so, the binary code corresponding to the gas sensor 131 will change accordingly. Generally, the binary code of the gas sensor 131 has a one-to-one correspondence with the concentration of the sensitive gas inside the box 11, and the correspondence can be confirmed by a linear fitting method. The user obtains the current binary code information of the gas sensor 131 stored in the storage module 143 of the NFC chip 14 through the mobile terminal 31, converts the current binary code information into the gas concentration information of the sensitive gas, and displays the gas concentration information on the display screen of the mobile terminal 31. The humidity sensor 132 comprises a series voltage-dividing circuit composed of a third variable resistor R5 and a third constant resistor R6, wherein the third variable resistor R5 is a humidity-sensitive resistor, and the third constant resistor R6 is a humidity-insensitive constant resistor; the serial partial voltage of the third variable resistor R5 and the third constant resistor R6 is connected with the signal acquisition module 145 in the NFC chip 14 by a lead-out interface, namely, the voltage V at the serial partial voltage is_{out_3}To the signal acquisition module 145. The specific detection method is similar to that of the gas sensor 131, and is not described herein again.

Fig. 4 is a schematic structural diagram of the connection between the package box with the NFC chip and the flexible battery according to the embodiment of the present invention. Preferably, as shown in fig. 4, the package with an NFC chip according to this embodiment further includes a flexible battery 41 mounted in the substrate 12; the flexible battery 41 is connected to the NFC chip 14, and is configured to supply power to the NFC chip 14. The NFC chip 14 is powered by the flexible battery 41, and the battery is flexible, so that the battery can be more attached to the inner surface of the case 11 and is not limited by the shape of the case 11. The flexible battery 41 may be, but is not limited to, a flexible printed thin film battery. Specifically, the substrate 12 is provided with a first interface 45 connected to the NFC chip 14 and a second interface 44 connected to the sensing module 13 and the anti-counterfeit tag 15, and the conductive trace 43 is used to electrically connect the first interface 45 and the second interface 44.

Preferably, as shown in fig. 4, the package box with an NFC chip provided in this embodiment further includes a flexible switch 42; the first end of the flexible switch 42 is connected to the NFC chip 14, the second end is connected to the flexible battery 41, and the control end extends from the inside of the case 11 to the outside of the case 11, so as to control whether the flexible battery 41 and the NFC chip 14 are conducted. Through setting up flexible switch 41, can be so that the user be in need right when each item parameter of box body 11 inside detects, just switch on flexible battery 41 with NFC chip 14 has avoided because of flexible battery 41 does not break and does NFC chip 14 supplies power and the energy waste that leads to.

Furthermore, the present embodiment further provides a method for controlling a packaging box with an NFC chip, and fig. 6 is a flowchart of the method for controlling the packaging box with an NFC chip according to the present embodiment. As shown in fig. 6, the method for controlling a package with an NFC chip according to this embodiment includes the package with an NFC chip according to any one of the above embodiments, and further includes the steps of:

step S61, the NFC core 14 receives an instruction sent by the mobile terminal 31 to obtain the internal parameters of the cartridge 11;

in step S62, the NFC chip 14 controls the sensing module 13 to acquire the gas concentration information and the relative humidity information inside the box body 11 and transmit the information to the mobile terminal 31, and controls the detection module 142 to acquire the temperature information inside the box body 11 and transmit the information to the mobile terminal 31.

For example, when a user needs to obtain various parameters inside the cartridge 11 to detect the quality of a product inside the cartridge 11, an instruction for obtaining the parameters is sent to the NFC chip 14 through the mobile terminal 31; the NFC chip 14 receives the instruction through the radio frequency module 144, and controls the detection module 142 integrated on the NFC chip 14 and the sensing module 13 connected to the NFC chip 14 to start collecting various parameters inside the box body 11 according to the received instruction; after the collection of the various parameters is completed, the NFC chip 3 stores the collected various parameters in the storage module 143 and transmits the collected various parameters to the mobile terminal 31 through the radio frequency module 144. The mobile terminal 31 may directly display various parameters transmitted by the NFC chip 14 in the form of characters or diagrams on a display interface thereof, or may display various parameters transmitted by the NFC chip 14 on the display interface of the mobile terminal 31 after analyzing and processing the parameters.

In order to realize the storage of different types of data and improve the efficiency of data storage and subsequent data calling, preferably, the storage module 143 includes a parameter storage unit, an anti-counterfeiting information storage unit and a user-defined storage unit; the parameter storage unit is used for storing initial parameter information of the gas sensor 131, the humidity sensor 132 and the detection module 142 and currently detected parameter information, such as initial binary code information of the gas sensor 131 and currently detected binary code information, respectively; the anti-counterfeiting information storage unit is used for storing the initial anti-counterfeiting information and the current anti-counterfeiting information of the anti-counterfeiting label 15; the user-defined storage unit is used for storing information according to the needs of the user, for example, storing information such as a product name, a manufacturer name, a production date, a product serial number and the like in the box body 11, so as to improve the flexibility of the storage module 143.

In order to accurately measure the temperature information inside the cartridge 11, preferably, the specific step of controlling the detection module 142 by the NFC chip 14 to acquire the temperature information inside the cartridge 11 includes:

(S62-1) providing a temperature-sensitive resistor with a positive temperature coefficient and a temperature-sensitive resistor with a negative temperature coefficient, wherein the temperature-sensitive resistor with the positive temperature coefficient and the temperature-sensitive resistor with the negative temperature coefficient are both used for detecting the temperature in the box body;

(S62-2) performing linear regression processing on a plurality of standard first temperature data which are directly stored in the NFC chip and correspond to the temperature sensitive resistor with the positive temperature coefficient and a plurality of temperature values inside the box body which correspond to the plurality of standard first temperature data one to obtain a first straight line; performing linear regression processing on a plurality of standard second temperature data which are directly stored in the NFC chip and correspond to the temperature sensitive resistor with the negative temperature coefficient and a plurality of temperature values inside the box body which correspond to the plurality of standard second temperature data one by one to obtain a second straight line;

(S62-3) taking an intersection of the first straight line and the second straight line as a reference point;

(S62-4) acquiring current first temperature data corresponding to the temperature-sensitive resistor with the positive temperature coefficient and current second temperature data corresponding to the temperature-sensitive resistor with the negative temperature coefficient, which are directly stored in the NFC chip;

(S62-5) substituting the current first temperature data into the first straight line to obtain a first coordinate point, and substituting the current second temperature data into the second straight line to obtain a second coordinate point;

(S62-6) connecting the reference point and the first coordinate point to obtain a third straight line, and connecting the reference point and the second coordinate point to obtain a fourth straight line;

(S62-7) obtaining a first weight corresponding to the temperature sensitive resistance of the positive temperature coefficient and a second weight corresponding to the temperature sensitive resistance of the negative temperature coefficient from differences between the first straight line and the third straight line and between the second straight line and the fourth straight line;

(S62-8) calculating a temperature as the temperature inside the case body based on the first weight, the second weight, the first coordinate point, and the second coordinate point.

Specifically, the resistance R of the temperature-sensitive resistor is linearly related to the temperature T, and those skilled in the art can know from their ordinary technical knowledge that the reciprocal of the temperature data (including the temperature data Sensor _ M (hereinafter referred to as M) corresponding to the temperature-sensitive resistor with positive temperature coefficient and the temperature data Sensor _ P (hereinafter referred to as P) corresponding to the temperature-sensitive resistor with negative temperature coefficient) directly stored inside the storage module (e.g., an EEPROM (electrically erasable Programmable read only memory)) in the NFC chip is linearly related to the temperature T, that is, 1/M ═ T and 1/P ═ T, wherein the temperature data is related to the frequency. Based on the principle, after linear regression (linear function) processing is carried out on a plurality of M-T data and a plurality of P-T data, two straight lines shown as follows are respectively obtained:

l_m：y＝k_m·x+b_m

l_p：y＝k_p·x+b_p

wherein x represents a temperature T; y represents temperature data (namely temperature data M corresponding to the temperature sensitive resistor with positive temperature coefficient and temperature data P corresponding to the temperature sensitive resistor with negative temperature coefficient) which is directly read in the NFC chip and is related to the temperature sensitive resistor; l_mRepresents a straight line corresponding to a temperature sensitive resistor of a positive temperature coefficient,/_pA straight line indicating a temperature-sensitive resistor having a negative temperature coefficient; k represents the slope of the line; b represents the intercept of the line with the y-axis. Due to k_mAnd k is_pOpposite in sign, therefore,/_m、l_pThe two straight lines necessarily have an intersection O (x)₀,y₀) The intersection point is the reference point. Then, the internal temperature of the box body is calculated by adopting the following process:

(1) after the NFC chip 14 controls the detection module 142 to start temperature detection sampling, a group (y) of storage locations corresponding to the NFC chip is obtained_m,y_p) The data of (a);

(2)y_pwill be substituted into the linear equation l_pCalculating to obtain x_p；

(3)(x_p,y_p) Will react with O (x)₀,y₀) Straight line l obtained by connecting₁The slope of (A) is denoted as k₁；

(4)k₁And k is_pIs recorded as deviation

μ_pLarger, the description indicates₁And l_pThe larger the deviation degree is, the smaller the weight of the temperature-sensitive resistor with the negative temperature coefficient to the temperature is;

(5) repeating the steps (2) to (3), and calculating to obtain a straight line l₂And slope k corresponding thereto₂Repeating the step (4) to obtain k₂And k is_mDeviation of (a) of_m；

(6) Calculating to obtain a first weight corresponding to the temperature-sensitive resistor with positive temperature coefficient

And a second weight corresponding to a temperature-sensitive resistor of negative temperature coefficient

(7) Finally, calculating to obtain the temperature T ═ w inside the box body_p·x_p+w_m·x_m。

The packaging box with the NFC chip and the control method thereof provided by the specific embodiment have the advantages that the detection module used for detecting the internal temperature of the box body is integrated in the NFC chip, the sensing module connected with the NFC chip is arranged to detect the gas concentration and the humidity inside the box body, real-time detection of various parameters inside the box body is realized, the quality of products inside the box body can be judged through comprehensive analysis of various parameters, the problem that the quality of products inside the packaging box is accurately known under the condition that the packaging box is not detached is solved, the user is prevented from buying inferior or metamorphic products, and the use experience of the user is improved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a packing carton that possesses NFC chip, includes a sealed box body, its characterized in that still includes:

the substrate is adhered to the inner surface of the box body and is a flexible substrate;

the anti-counterfeit label is coated on the outer surface of the box body;

the sensing module is arranged in the substrate and comprises a gas sensor and a humidity sensor, the gas sensor is used for detecting the gas concentration inside the box body and transmitting the gas concentration to the NFC chip, and the humidity sensor is used for detecting the humidity inside the box body and transmitting the humidity to the NFC chip;

the NFC chip is arranged in the substrate and is connected with the sensing module; the NFC chip comprises a detection module for detecting the temperature inside the box body, the detection module calculates the temperature inside the box body through a temperature-sensitive resistor with a positive temperature coefficient and a first weight corresponding to the temperature-sensitive resistor, and a temperature-sensitive resistor with a negative temperature coefficient and a second weight corresponding to the temperature-sensitive resistor, and the product quality inside the box body is analyzed through the gas concentration inside the box body, the humidity inside the box body and the temperature inside the box body, so that the product quality inside the packing box can be accurately known under the condition that the packing box is not dismounted; the gas sensor, the humidity sensor and the anti-counterfeit label all comprise series voltage-dividing circuits formed by variable resistors and fixed value resistors;

the flexible battery is arranged in the substrate, is connected with the NFC chip and is used for supplying power to the NFC chip;

flexible switch, flexible switch's first end is connected NFC chip, second end are connected flexible battery, control end are followed the inside extension of box body reaches the box body is outside, be used for control flexible battery with whether the NFC chip switches on for the user is in need right when the inside parameter of box body detects, just switch on flexible battery with the NFC chip avoids because of flexible battery does incessantly do the energy that the NFC chip power supply leads to is extravagant.

2. The packaging box with the NFC chip according to claim 1, wherein the NFC chip further comprises a control module and a storage module; the control module is connected with the storage module, the sensing module and the detection module and used for transmitting the received gas concentration information, the received humidity information and the received temperature information to the storage module for storage.

3. The packaging box with the NFC chip according to claim 2, wherein the NFC chip is connected with the anti-counterfeit label and used for acquiring current anti-counterfeit information of the anti-counterfeit label and transmitting the current anti-counterfeit information to the storage module for storage, and initial anti-counterfeit information of the anti-counterfeit label is further stored in the storage module.

4. The packaging box with the NFC chip according to claim 3, further comprising a strip-shaped tearing opening located on the box body, wherein the strip-shaped tearing opening is used for disassembling the box body, and the anti-counterfeit label covers the strip-shaped tearing opening.

5. The packaging box with the NFC chip according to claim 3, wherein the NFC chip further comprises a radio frequency module; the radio frequency module is connected with the control module and used for transmitting the information stored in the storage module to a mobile terminal.

6. A method for controlling a package provided with an NFC chip, comprising the package provided with an NFC chip according to any one of claims 1 to 5, comprising the steps of:

the NFC chip receives an instruction sent by a mobile terminal for acquiring the internal parameters of the box body;

the NFC chip controls the sensing module to acquire gas concentration information and relative humidity information in the box body and transmit the information to the mobile terminal, and controls the detection module to acquire temperature information in the box body and transmit the information to the mobile terminal;

the specific steps of the NFC chip controlling the detection module to acquire the temperature information inside the box body comprise: