Remaining roll paper reminding device

Abstract

The utility model provides a roll paper remaining amount reminding device. The roll paper remaining amount reminding device comprises a roll paper placing cylinder, a permanent magnet, a Wiegand sensor, a central shaft and a circuit board, a central shaft is arranged in the roll paper placing cylinder; one end of the central shaft is arranged in the center of one side of the roll paper placing cylinder, and the other end of the central shaft is provided with a permanent magnet; a circuit board is arranged on the other side of the roll paper placing cylinder; a Wiegand sensor is welded in the circuit board; when the central shaft rotates, the permanent magnet is driven to rotate to generate an alternating magnetic field, and the Wiegand sensor is triggered to generate a pulse signal; the electric control unit calculates the roll paper remaining amount according to the pulse signal, and when the roll paper remaining amount meets the reminding condition, a reminding signal is output. Triggering the Wiegand sensor to generate a pulse signal through an alternating magnetic field generated by rotation of the central shaft when the user extracts the tissue; the roll paper remaining amount is calculated based on the pulse signal, a reminding signal is output, the purpose of automatic monitoring and alarming of the paper towel using amount is achieved, environment energy is fully utilized by the whole device, and the effects of high integration, convenient installation and timely reminding are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of Internet of Things, and in particular to a roll paper remaining amount reminding device. Background Art

[0002] As an indispensable hygiene product in daily life, toilet paper rolls are widely used in various public and private places, including shopping malls, schools, office buildings and restaurants.

[0003] However, as paper rolls are frequently used and usage is difficult to predict, managers often face challenges in monitoring and replenishing paper rolls. Current methods often rely on regular inspections or user complaints, which may require a lot of manpower and may cause problems such as untimely replenishment leading to poor user experience, which may lead to paper roll supply interruptions or inconvenience in use. Utility Model Content

[0004] In view of this, an embodiment of the utility model provides a roll paper remaining amount reminder device to solve the problem that the roll paper usage is difficult to detect in time and the detection cost is high.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] The utility model discloses a roll paper remaining reminder device in a first aspect, the device comprising: a roll paper placement cylinder, a permanent magnet, a Wiegand sensor, a central axis and a circuit board;

[0007] The central axis is arranged inside the paper roll placement cylinder;

[0008] One end of the central axis is arranged at the center position of one side of the paper roll placement cylinder, and the other end of the central axis is provided with the permanent magnet;

[0009] The circuit board is arranged on the other side of the roll paper placement cylinder; the Wiegand sensor is welded in the circuit board;

[0010] When the central shaft rotates, it drives the permanent magnet to rotate and generates an alternating magnetic field, triggering the Wiegand sensor to generate a pulse signal; the electronic control unit in the circuit board calculates the remaining amount of the roll paper according to the pulse signal, and when the remaining amount of the roll paper meets the reminder condition, the reminder signal is output through the communication circuit in the circuit board.

[0011] Preferably, a protrusion device is provided on the central axis;

[0012] The protrusion device is used to fix the roll of paper and the central axis to each other.

[0013] Preferably, the device further comprises: a waterproof cover;

[0014] The waterproof cover is arranged on the outer surface of the circuit board.

[0015] Preferably, the circuit board includes a recording module;

[0016] The recording module is connected to the Wiegand sensor and the electronic control unit respectively;

[0017] The recording module is used to store the pulse signal sent by the Wiegand sensor and send the pulse signal to the electronic control unit.

[0018] Preferably, the circuit board includes an energy conditioning circuit and an energy storage element;

[0019] The energy conditioning circuit and the energy storage element are connected to each other;

[0020] The energy conditioning circuit is connected to the Wiegand sensor;

[0021] The energy storage element is connected to the electronic control unit and the communication circuit respectively;

[0022] The energy conditioning circuit is used to rectify and stabilize the pulse signal to obtain pulse energy, and store the pulse energy in the energy storage element;

[0023] The energy storage element is used to supply power to the electronic control unit and the communication circuit.

[0024] Preferably, the protruding device is specifically a retractable spike.

[0025] Preferably, the Wiegand sensor is welded at the center of the circuit board; and the Wiegand sensor is aligned with the horizontal line of the permanent magnet.

[0026] Preferably, the permanent magnet is a bidirectionally magnetized or multidirectionally magnetized permanent magnet.

[0027] Preferably, the waterproof cover is made of plastic.

[0028] Preferably, the circuit board has the same shape as the other side of the roll paper placement cylinder, and the area of ​​the circuit board is smaller than or equal to the area of ​​the other side of the roll paper placement cylinder.

[0029] Based on the above-mentioned embodiment of the utility model, a roll paper remaining reminder device is provided, including a roll paper placement cylinder, a permanent magnet, a Wiegand sensor, a central shaft and a circuit board; a central shaft is arranged inside the roll paper placement cylinder; one end of the central shaft is arranged at the center position of one side of the roll paper placement cylinder, and a permanent magnet is arranged at the other end of the central shaft; a circuit board is arranged on the other side of the roll paper placement cylinder; a Wiegand sensor is welded in the circuit board; when the central shaft rotates, it drives the permanent magnet to rotate to generate an alternating magnetic field, triggering the Wiegand sensor to generate a pulse signal; the electronic control unit calculates the roll paper remaining according to the pulse signal, and outputs a reminder signal when the roll paper remaining meets the reminder condition. The alternating magnetic field generated by the rotation of the central shaft when the user draws a paper towel triggers the Wiegand sensor to generate a pulse signal; the roll paper remaining is calculated based on the pulse signal and a reminder signal is output, so as to achieve the purpose of automatic monitoring and alarming of paper towel usage. The overall device makes full use of environmental energy to achieve the effects of high integration, easy installation and timely reminder. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0031] Figure 1 A first structural diagram of a roll paper remaining reminder device provided by an embodiment of the utility model;

[0032] Figure 2 A schematic diagram of a circuit board module provided by an embodiment of the utility model;

[0033] Figure 3 A second structural diagram of a roll paper remaining reminder device provided by an embodiment of the utility model;

[0034] Figure 4 This is a third structural diagram of a roll paper remaining reminder device provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] In this application, the terms "comprises", "comprising" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0037] From the background technology, we can see that since paper rolls are used frequently and the usage is difficult to predict, managers often need to spend a lot of manpower costs to monitor the remaining paper rolls. There are problems such as insufficient and timely replenishment of paper rolls, resulting in poor user experience. Therefore, how to reduce the difficulty and cost of detecting paper roll usage is an issue that needs to be urgently addressed.

[0038] Therefore, the embodiment of the utility model provides a roll paper remaining reminder device, the device includes: a roll paper placement cylinder, a permanent magnet, a Wiegand sensor, a central shaft and a circuit board; the roll paper placement cylinder is provided with a central shaft; one end of the central shaft is provided at the central position of one side of the roll paper placement cylinder, and the other end of the central shaft is provided with a permanent magnet; the other side of the roll paper placement cylinder is provided with a circuit board; the circuit board is welded with a Wiegand sensor; when the central shaft rotates, it drives the permanent magnet to rotate to generate an alternating magnetic field, triggering the Wiegand sensor to generate a pulse signal; the electronic control unit in the circuit board calculates the roll paper remaining according to the pulse signal, and when the roll paper remaining meets the reminder condition, the reminder signal is output through the communication circuit in the circuit board. This device triggers the Wiegand sensor to generate a pulse signal through the alternating magnetic field generated by the rotation of the central shaft when the user draws a paper towel; and calculates the roll paper remaining based on the pulse signal to output a reminder signal, so as to achieve the purpose of automatic monitoring and alarming of paper towel usage. The overall device makes full use of environmental energy to achieve the effects of high integration, easy installation and timely reminder.

[0039] See also Figure 1 , showing a first structural diagram of a roll paper remaining reminder device provided by an embodiment of the utility model.

[0040] It should be noted that the device includes: a paper roll placement cylinder 1 , a central axis 2 , a permanent magnet 3 , a circuit board 4 and a Wiegand sensor 5 .

[0041] The paper roll placement cylinder 1 is a shell with a hollow interior, and the shape of the paper roll placement cylinder 1 can be a cylinder or the same as the shape of an ordinary paper roll cylinder.

[0042] It should be noted that the installation method of the device can be consistent with the installation method of a common paper roll, for example, the paper roll placement tube 1 is fixed vertically or horizontally on a wall or a bracket.

[0043] Specifically, a central shaft 2 is disposed inside the paper roll placement cylinder 1. One end of the central shaft 2 is disposed at the center position of one side of the paper roll placement cylinder 1 to play a fixing role. A permanent magnet 3 is disposed at the other end of the central shaft 2.

[0044] For example, the permanent magnet 3 is installed at the position closest to the edge of the other end of the central axis 2. Such an installation method can provide a sufficiently strong magnetic field for the Wiegand sensor 5 installed subsequently.

[0045] Specifically, the permanent magnets 3 can be arranged in a row of units at the other end of the central axis 2. The permanent magnets 3 are specifically bidirectionally magnetized or multidirectionally magnetized permanent magnets.

[0046] It should be noted that the central axis is used to place the roll of paper.

[0047] In some embodiments, the central shaft 2 is provided with a protrusion device, wherein the protrusion device is specifically a retractable spike.

[0048] It can be understood that the protruding device is used to fix the paper roll and the central shaft 2 to each other, so as to prevent the paper roll and the central shaft 2 from sliding relative to each other and ensure that the paper roll can drive the central shaft 2 to rotate when being pulled.

[0049] Specifically, a circuit board 4 is disposed on the other side of the paper roll placement cylinder 1 .

[0050] It should be noted that the circuit board 4 has the same shape as the other side of the roll paper placement cylinder 1, and the area of ​​the circuit board 4 is less than or equal to the area of ​​the other side of the roll paper placement cylinder 1. For example, the circuit board 4 and the other side of the roll paper placement cylinder 1 are both circular.

[0051] In actual application, the circuit board 4 can be arranged on the inner wall of the other side of the paper roll placement cylinder 1 , or on the outer surface of the other side of the paper roll placement cylinder 1 .

[0052] It should be noted that when the circuit board 4 is disposed on the inner wall of the other side of the paper roll placement cylinder 1 , the circuit board 4 and the permanent magnet 3 are not connected.

[0053] Specifically, the circuit board 4 is welded with a Wiegand sensor 5. That is to say, the Wiegand sensor 5 is welded on the circuit board 4 as a component.

[0054] It should be noted that the Wiegand sensor is a passive device with both signal and energy properties, and is sensitive to changes in the direction of the magnetic field. The Wiegand sensor has the advantages of high signal-to-noise ratio, high robustness, ramp / pulse intensity being independent of speed, and non-mechanical contact.

[0055] It is understandable that the Wiegand sensor 5 is welded at the center of the circuit board 4; the Wiegand sensor 5 is aligned with the horizontal line of the permanent magnet 3. This installation method can make the Wiegand sensor 5 and the permanent magnet 3 as close as possible, and the Wiegand sensor 5 can be easily affected by the magnetic field of the permanent magnet 3.

[0056] In actual application, when a user takes out a tissue, the roll of paper rotates, causing the central shaft 2 to rotate accordingly. When the central shaft 2 rotates, it drives the permanent magnet 3 to rotate, thereby generating an alternating magnetic field, which triggers the Wiegand sensor 5 to generate a pulse signal (Wiegand pulse); the electronic control unit in the circuit board 4 calculates the remaining amount of the roll of paper according to the pulse signal, and when the remaining amount of the roll of paper meets the reminder condition, the communication circuit in the circuit board 4 outputs a reminder signal.

[0057] In combination with the present embodiment Figure 2 The circuit board 4 includes an electric control unit 41 , a communication circuit 42 , a recording module 43 , an energy conditioning circuit 44 and an energy storage element 45 .

[0058] Specifically, the recording module 43 is connected to the Wiegand sensor 5 and the electronic control unit 41 respectively.

[0059] The recording module 43 is used to store the pulse signal sent by the Wiegand sensor 5 and send the pulse signal to the electronic control unit 41 .

[0060] It can be understood that the recording module 43 can be a non-volatile storage recording module.

[0061] It should be noted that after receiving the pulse signal sent by the recording module 43, the electronic control unit 41 calculates the remaining amount of the roll paper according to the pulse signal. When the remaining amount of the roll paper meets the reminder condition, it outputs a reminder signal to the supervision platform or the mobile inspection device through the communication circuit 42.

[0062] Specifically, the device can pre-calibrate the total number of central axis revolutions according to the specifications of the paper roll, wherein the total number of central axis revolutions is the total number of times the central axis 2 needs to rotate when the current paper roll is used up.

[0063] In actual application, when the center shaft 2 rotates a fixed angle, the alternating magnetic field generated by the permanent magnet 3 triggers the Wiegand sensor 5 to generate a pulse signal. Therefore, each time the electric control unit 41 receives a pulse signal, the center shaft revolution count is accumulated by 1, and the electric control unit 41 calculates the difference between the total center shaft revolution count and the current accumulated center shaft revolution count, and marks the difference as the paper roll remaining amount. When the paper roll remaining amount is less than a preset value (e.g., 10% of the total center shaft revolution count), it indicates that the paper roll remaining amount meets the reminder condition, and at this time, a reminder signal is output to the supervision platform or the mobile inspection device through the communication circuit 42.

[0064] It should be noted that, each time the electronic control unit 41 receives a pulse signal, it can use a pre-configured data accumulation operator to record the number of rotations of the central shaft and add 1.

[0065] Specifically, the energy conditioning circuit 44 and the energy storage element 45 are connected to each other; the energy conditioning circuit 44 is connected to the Wiegand sensor 5; and the energy storage element 45 is connected to the electronic control unit 41 and the communication circuit 42 respectively.

[0066] It should be noted that the energy conditioning circuit 44 is used to rectify and stabilize the pulse signal to obtain pulse energy, and store the pulse energy in the energy storage element 45. The energy conditioning circuit 44 is specifically a rectification, filtering, voltage stabilization circuit, etc., which mainly converts the positive and negative pulse waveforms of the output pulse signal into unidirectional pulses and then stabilizes the voltage to obtain electrical pulse energy.

[0067] The energy storage element 45 is used to supply power to the electronic control unit 41 and the communication circuit 42 .

[0068] It can be understood that the device collects the mechanical energy generated when the user draws a tissue, realizes electromechanical conversion through the energy conditioning circuit 44, and supplies power to the circuit board 4; the entire process is self-powered, avoiding the disadvantage that the energy storage element needs to be disassembled and maintained for power supply.

[0069] In some embodiments, see Figure 3 The second structural diagram of a roll paper remaining reminder device provided by the embodiment of the utility model is shown. The device also includes a waterproof cover 6; the waterproof cover 6 is arranged on the outer surface of the circuit board 4. The material of the waterproof cover is plastic material.

[0070] It should be noted that, since the device does not require external wiring, the circuit board 4 is independent of the entire system, so the circuit board can be sealed to achieve a moisture-proof effect.

[0071] It should be noted that Figure 3 The shape of the waterproof cover 6 shown is only for illustration and does not specifically limit the shape of the actual waterproof cover.

[0072] In some specific embodiments, see Figure 4 The third structural diagram of a roll paper remaining reminder device provided by the embodiment of the utility model is shown. The permanent magnet 3, the circuit board 4 and the Wiegand sensor 5 can be placed in an interchangeable position, as follows:

[0073] A central axis 2 is arranged inside the paper roll placement cylinder 1 ; one end of the central axis 2 is arranged at the center position of one side of the paper roll placement cylinder 1 , and a circuit board 4 is arranged at the other end of the central axis 2 ; a Wiegand sensor 5 is welded in the circuit board 4 .

[0074] A permanent magnet 3 is disposed on the other side of the paper roll placement cylinder 1 .

[0075] It can be understood that when the central axis 2 rotates, the Wiegand sensor 5 in the circuit board 4 is driven to rotate. Since the Wiegand sensor 5 rotates relative to the permanent magnet 3, the Wiegand sensor 5 is affected by the change in the direction of the magnetic field, and the Wiegand sensor 5 generates a pulse signal. The electronic control unit 41 in the circuit board 4 calculates the remaining paper roll according to the pulse signal, and when the remaining paper roll meets the reminder condition, the reminder signal is output through the communication circuit 42 in the circuit board 4.

[0076] In actual application, the Wiegand sensor 5 can also send a pulse signal directly to the host, which calculates the remaining amount of roll paper based on the pulse signal. When the remaining amount of roll paper meets the reminder condition, the host triggers the communication element and sends a reminder signal to the supervision platform or mobile inspection equipment.

[0077] In some embodiments, the device can be arranged in places with dense populations and large population flows. In case of excessive or malicious use of the roll of paper by the user, the device can pre-calibrate the maximum number of central axis revolutions per unit time. When it is detected that the number of central axis revolutions per preset unit time exceeds the preset maximum number of central axis revolutions, the device can output a warning sound, and generate a reminder signal according to the currently detected number of central axis revolutions, and output the reminder signal to the supervision platform or mobile inspection equipment.

[0078] Furthermore, the device can be combined with a display device to prompt the user of the remaining amount of roll paper. For example, a prompt screen is installed outside the bathroom door, and the device directly sends a pulse signal to the host, which calculates the remaining amount of roll paper according to the pulse signal and sends display information to the prompt screen, so that the remaining amount of roll paper in the device is displayed through the prompt screen.

[0079] In some embodiments, the device can be directly integrated into a smart home control center to display the remaining toilet roll in real time through a smart home card on a mobile phone and to provide reminders of paper shortages through pop-up windows and the like.

[0080] Specifically, the device sends a pulse signal to a smart home control center, and the smart home control center calculates the remaining amount of the roll paper according to the pulse signal, thereby realizing the purpose of prompting the user of the remaining amount of the roll paper.

[0081] In summary, the embodiment of the utility model provides a roll paper remaining reminder device, the device includes: a roll paper placement cylinder, a permanent magnet, a Wiegand sensor, a central shaft and a circuit board; the roll paper placement cylinder is provided with a central shaft; one end of the central shaft is provided at the central position of one side of the roll paper placement cylinder, and the other end of the central shaft is provided with a permanent magnet; the other side of the roll paper placement cylinder is provided with a circuit board; the circuit board is welded with a Wiegand sensor; when the central shaft rotates, the permanent magnet is driven to rotate to generate an alternating magnetic field, triggering the Wiegand sensor to generate a pulse signal; the electronic control unit in the circuit board calculates the roll paper remaining amount according to the pulse signal, and when the roll paper remaining amount meets the reminder condition, the reminder signal is output through the communication circuit in the circuit board. This device triggers the Wiegand sensor to generate a pulse signal through the alternating magnetic field generated by the rotation of the central shaft when the user draws a paper towel; and calculates the roll paper remaining amount based on the pulse signal to output a reminder signal, so as to achieve the purpose of automatic monitoring and alarming of paper towel usage, and reduce the cost and difficulty of paper towel usage detection. The overall device makes full use of environmental energy, collects mechanical energy when the central shaft rotates, and provides electrical energy to the electronic control unit and the communication circuit through electromechanical conversion. Based on this, the device has many beneficial effects such as integration, miniaturization, easy installation and compliance with low-carbon and environmental protection requirements.

[0082] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can refer to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system or system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can refer to the partial description of the method embodiment. The system and system embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without creative work.

[0083] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present utility model.

[0084] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A roll paper remaining reminder device, characterized in that: The device comprises: a roll paper placing cylinder, a permanent magnet, a Wiegand sensor, a central axis and a circuit board; The central axis is arranged inside the paper roll placement cylinder; One end of the central axis is arranged at the center position of one side of the paper roll placement cylinder, and the other end of the central axis is provided with the permanent magnet; The circuit board is arranged on the other side of the paper roll placement cylinder; the Wiegand sensor is welded in the circuit board; When the central shaft rotates, it drives the permanent magnet to rotate and generates an alternating magnetic field, triggering the Wiegand sensor to generate a pulse signal; the electronic control unit in the circuit board calculates the remaining amount of the roll paper according to the pulse signal, and when the remaining amount of the roll paper meets the reminder condition, the reminder signal is output through the communication circuit in the circuit board.

2. The device according to claim 1, characterized in that A protrusion device is provided on the central axis; The protrusion device is used to fix the roll of paper and the central axis to each other.

3. The device according to claim 1, characterized in that The device also includes: a waterproof cover; The waterproof cover is arranged on the outer surface of the circuit board.

4. The device according to claim 1, characterized in that The circuit board includes a recording module; The recording module is connected to the Wiegand sensor and the electronic control unit respectively; The recording module is used to store the pulse signal sent by the Wiegand sensor and send the pulse signal to the electronic control unit.

5. The device according to claim 1, characterized in that The circuit board includes an energy conditioning circuit and an energy storage element; The energy conditioning circuit and the energy storage element are connected to each other; The energy conditioning circuit is connected to the Wiegand sensor; The energy storage element is connected to the electronic control unit and the communication circuit respectively; The energy conditioning circuit is used to rectify and stabilize the pulse signal to obtain pulse energy, and store the pulse energy in the energy storage element; The energy storage element is used to supply power to the electronic control unit and the communication circuit.

6. The device according to claim 2, characterized in that The protruding device is specifically a retractable spike.

7. The device according to claim 1, characterized in that The Wiegand sensor is welded at the center of the circuit board; the Wiegand sensor is aligned with the horizontal line of the permanent magnet.

8. The device according to claim 1, characterized in that The permanent magnet is specifically a bidirectionally magnetized or multidirectionally magnetized permanent magnet.

9. The device according to claim 3, characterized in that The waterproof cover is made of plastic.

10. The device according to claim 1, characterized in that The circuit board has the same shape as the other side of the roll paper placement cylinder, and the area of ​​the circuit board is smaller than or equal to the area of ​​the other side of the roll paper placement cylinder.

Images