Container cover opening monitoring device

Abstract

The utility model discloses a container cover opening monitoring device which comprises a first shell and a second shell. A random number generator and a display which are in signal connection are mounted on the first shell; the first shell is provided with a first interface, and a first metal contact piece and a second metal contact piece are installed in the first interface. The random number generator is electrically connected with the first metal contact and the second metal contact; a power supply battery is installed in the second shell, a second interface is formed in the second shell, and a third metal contact piece and a fourth metal contact piece are installed in the second interface; the power supply battery is electrically connected with the third metal contact and the fourth metal contact; the second interface is matched with the first interface in shape and is used for being in butt joint with the first interface; one of the first shell and the second shell is fixedly installed on the container cover, and the other one of the first shell and the second shell is fixedly installed on the side wall of the food container. According to the utility model, whether the container cover of food such as a water cup, a meal box and the like or other types of containers is opened by others can be monitored with lower cost and higher repeatability and practicability.

Description

Technical Field

[0001] This utility model relates to the field of safe storage technology for daily necessities and production products, and in particular to a container lid opening monitoring device. Background Technology

[0002] Currently, the market primarily uses combination locks, fingerprint locks, or key locks to seal and protect water cups and lunch boxes, aiming to prevent potential poisoning incidents. However, this approach has drawbacks: key locks are too bulky and unsuitable for water cups and lunch boxes, while combination locks or fingerprint locks are expensive and require custom-made cups of specific dimensions. Therefore, developing a container lid opening detection device that overcomes these problems in existing technologies is a direction that requires further research by those skilled in the art. Utility Model Content

[0003] The purpose of this invention is to provide a container lid opening monitoring device that can monitor whether the lids of food containers such as water cups and lunch boxes have been opened by others at a relatively low cost.

[0004] This utility model discloses a container lid opening monitoring device, which includes:

[0005] A first housing, in which a random number generator is installed; a display is mounted on the surface of the first housing; and the random number generator is signal-connected to the display; the first housing is also provided with a first interface, in which a first metal contact and a second metal contact are installed; the positive and negative terminals of the random number generator are electrically connected to the first metal contact and the second metal contact, respectively.

[0006] A second housing contains a power supply battery. The second housing has a second interface, which contains a third metal contact and a fourth metal contact. The positive and negative terminals of the power supply battery are electrically connected to the third and fourth metal contacts, respectively. The shape of the second interface matches that of the first interface and is used to mate with the first interface.

[0007] The first housing and the second housing are configured such that when the first interface is connected to the second interface, the first metal contact is connected to the third metal contact and the second metal contact is connected to the fourth metal contact, so that the random number generator and the power supply battery form a closed loop;

[0008] One of the first housing and the second housing is fixedly installed on the container lid, and the other of the first housing and the second housing is fixedly installed on the side wall of the food container.

[0009] By adopting this technical solution: when the container lid covers the food container, the first housing docks with the second housing. At this time, the power supply battery powers on the random number generator, and the random number generator generates a random number, which the user is required to remember. If the food container is poisoned after the user leaves, during the process, the container lid will leave the food container and be re-covered. During this process, the power supply battery cuts off the power supply to the random number generator and then powers it on again. The randomly generated number changes, enabling the user to realize that someone has opened and closed the container lid, thus avoiding poisoning.

[0010] Preferably, the random number generator includes an Arduino microcontroller, and the display includes a 7-segment LED digital tube.

[0011] By adopting this technical solution: The Arduino microcontroller is a common and inexpensive hardware product, effectively reducing the equipment cost of this device; connecting the 7-segment LED digital tubes together in a "day" shape can realize the display of Arabic numerals from 0 to 9. The number of 7-segment LED digital tubes in the display can be configured to be at least 2 - 3, which can avoid the possibility that the poisoner obtains the original random number by repeatedly opening and closing the bottle cap.

[0012] Preferably, it further includes: a photoresistor and a voltage-dividing resistor; both ends of the photoresistor are respectively connected to the 5V power output pin and the A0 pin of the Arduino Uno microcontroller; both ends of the voltage-dividing resistor are respectively connected to the A0 pin and the GND pin of the Arduino microcontroller.

[0013] By adopting this technical solution: The photoresistor GL5539 is used to collect the ambient brightness, and in cooperation with the voltage-dividing resistor R1, a random initial voltage value is input to the Arduino microcontroller, overcoming the problem that the random numbers generated by traditional Arduino microcontrollers during power-on operation are actually pseudo-random, and avoiding the problems of excessive random number repeatability and insufficient security.

[0014] Preferably, the power supply battery uses a rechargeable lithium battery.

[0015] By adopting this technical solution: It is possible to further set a USB charging port on the second housing to charge the rechargeable lithium battery, or the second housing can be disassembled to remove the power supply battery for charging, ensuring the working endurance of this device.

[0016] Preferably, the first interface and the second interface are circular tubes with the same inner diameter; the first metal contact and the second metal contact are symmetrically and fittingly installed on the inner wall of the first interface; the third metal contact and the fourth metal contact are symmetrically and fittingly installed on the inner wall of the second interface.

[0017] Compared with the prior art, the present utility model has the following advantages:

[0018] First, this invention can use the generated random numbers to monitor whether the lids of food containers such as water cups and lunch boxes have been opened by others.

[0019] Secondly, this invention can significantly reduce the probability of contaminants / poisoners obtaining the original random number by repeatedly opening and closing the bottle cap by increasing the number of digits in the random number.

[0020] Thirdly, this utility model is inexpensive and can be used repeatedly.

[0021] Fourth, this utility model can be applied to containers of different types and shapes.

[0022] Finally, this invention has a simple structure, is easy to operate, and is easy to prepare and use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the internal structure of Example 1.

[0024] Figure 2 This is a schematic diagram of the working state of Example 1.

[0025] The component names corresponding to the various reference numerals in the figure are as follows:

[0026] 100, First housing; 200, Second housing; 110, First interface; 210, Second interface; 400, Display; 500, Power supply battery; 220, Charging port; 310, Arduino microcontroller; 320, Photoresistor; 330, Voltage divider resistor; 510, First metal contact; 520, Second metal contact; 530, Third metal contact; 540, Fourth metal contact; 610, Container lid; 620, Food container. Detailed Implementation

[0027] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0028] Example 1, please refer to Figure 1-2 :

[0029] A container lid 610 opening detection device includes a first housing 100 and a second housing 200. The first housing 100 is glued to the side wall of a food container 620, near the opening of the food container 620. The second housing 200 is glued to the container lid 610.

[0030] A random number generator is installed inside the first housing 100; a display 400 is mounted on the surface of the first housing 100; and the random number generator is signal-connected to the display 400; the first housing 100 is also provided with a first interface 110, which is a cylindrical tube, and a first metal contact 510 and a second metal contact 520 are symmetrically attached to the inner wall of the first interface 110. The positive terminal of the random number generator is electrically connected to the first metal contact 510, and the negative terminal of the random number generator is electrically connected to the second metal contact 520.

[0031] A power supply battery 500, which may be a lithium battery, is installed inside the second housing 200. A charging port 220 electrically connected to the power supply battery 500 is provided inside the second housing 200. The charging port 220 is preferably a USB charging port. The second housing 200 is also provided with a second interface 210, which is a cylindrical tube with the same inner diameter as the first interface 110. A third metal contact 530 and a fourth metal contact 540 are symmetrically fitted on the inner wall of the second interface 210. The positive terminal of the power supply battery 500 is electrically connected to the third metal contact 530. The negative terminal of the power supply battery 500 is electrically connected to the fourth metal contact 540. The shape of the second interface 210 matches the shape of the first interface 110 and is used to dock with the first interface 110. When the container lid 610 covers the food container 620, the first interface 110 docks with the second interface 210. At this time, the end of the first metal contact 510 abuts against the end of the third metal contact 530, and the end of the second metal contact 520 abuts against the end of the fourth metal contact 540, so that the random number generator and the power supply battery 500 form a closed loop.

[0032] The random number generator includes an Arduino microcontroller 310, a photoresistor 320, and a voltage divider resistor 330. The display 400 includes 2-3 seven-segment LED displays, arranged in a rectangular pattern to display Arabic numerals from 0 to 9. The 2-3 seven-segment LED displays are configured in parallel to display random numbers from 0 to 99 / 0 to 999, thus preventing the possibility of a poisoner obtaining the original random number by repeatedly opening and closing the bottle cap. The D2-D8 pins of the Arduino microcontroller 310 are connected to the positive terminals of LEDs 1-7 in each of the seven-segment LED displays, and the GND pin of the Arduino microcontroller 310 is connected to the negative terminals of LEDs 1-7 in each of the seven-segment LED displays. The photoresistor 320 is specifically a GL5539 photoresistor, and its two ends are respectively connected to the 5V power output pin and the A0 pin of the Arduino microcontroller 310; the two ends of the voltage divider resistor R1330 are respectively connected to the A0 pin and the GND pin of the Arduino microcontroller.

[0033] In practice, its working process is as follows:

[0034] When the lid 610 covers the food container 620, the power supply battery 500 powers on the random number generator. The generator generates a random number between 0 and 99 or 0 and 999, which is displayed on the display 400 using two or three groups of seven-segment LED displays, allowing the user to remember the number. If the food container 620 is poisoned after the user leaves, the power supply battery 500 disconnects from the random number generator when the lid 610 is opened during the poisoning process. When the lid 610 is closed again, the power supply battery 500 powers on the random number generator again. This causes the randomly generated number to change, alerting the user that someone has opened or closed the lid 610, thus preventing poisoning.

[0035] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings. However, this utility model is not limited to the above embodiments. Even if various changes are made to this utility model, if these changes fall within the scope of the claims of this utility model and their equivalents, they shall still fall within the protection scope of this utility model.

Claims

1. A container lid opening monitoring device, characterized in that, include: A first housing, in which a random number generator is installed; a display is mounted on the surface of the first housing; and the random number generator is signal-connected to the display; the first housing is also provided with a first interface, in which a first metal contact and a second metal contact are installed; the positive and negative terminals of the random number generator are electrically connected to the first metal contact and the second metal contact, respectively. A second housing contains a power supply battery. The second housing has a second interface, which contains a third metal contact and a fourth metal contact. The positive and negative terminals of the power supply battery are electrically connected to the third and fourth metal contacts, respectively. The shape of the second interface matches that of the first interface and is used to mate with the first interface. The first housing and the second housing are configured such that when the first interface is connected to the second interface, the first metal contact is connected to the third metal contact and the second metal contact is connected to the fourth metal contact, so that the random number generator and the power supply battery form a closed loop; One of the first housing and the second housing is fixedly installed on the container lid, and the other of the first housing and the second housing is fixedly installed on the side wall of the food container.

2. The container lid opening monitoring device according to claim 1, characterized in that, The random number generator includes an Arduino microcontroller, and the display includes a 7-segment LED display.

3. The container lid opening monitoring device according to claim 2, characterized in that, Also includes: A photoresistor and a voltage divider resistor; the two ends of the photoresistor are respectively connected to the 5V power output pin and the A0 pin of the Arduino microcontroller; the two ends of the voltage divider resistor are respectively connected to the A0 pin and the GND pin of the Arduino microcontroller.

4. The container lid opening monitoring device according to claim 3, characterized in that, The power supply battery is a rechargeable lithium battery.

5. The container lid opening monitoring device according to claim 4, characterized in that, The first interface and the second interface are circular tubes with the same inner diameter; the first metal contact and the second metal contact are symmetrically attached to the inner wall of the first interface; the third metal contact and the fourth metal contact are symmetrically attached to the inner wall of the second interface.

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