Roll paper and intelligent tissue machine

Abstract

The invention discloses roll paper and an intelligent tissue machine, the roll paper comprises a paper core tube and roll paper wound on the paper core tube, the paper core tube is provided with an RFID electronic tag, and commodity information corresponding to the roll paper is stored in the RFID electronic tag. The intelligent tissue machine comprises a machine frame, a main control board and roll paper, the main control board and the roll paper are installed on the machine frame, a paper shaft used for installing the roll paper is arranged on the machine frame, the roll paper comprises a paper core tube and roll paper wound on the paper core tube, the intelligent tissue machine is further provided with an RFID system, the RFID system is composed of an RFID electronic tag and a reader-writer, the RFID electronic tag is arranged on the paper core tube, and the reader-writer is connected with the RFID electronic tag. The reader-writer is installed on the rack, and the RFID electronic tag is in communication connection with the reader-writer; and the reader-writer is in communication connection with the main control board. According to the intelligent tissue machine, the RFID electronic tag is arranged on the paper core tube of the roll paper, and the reader-writer is arranged on the intelligent tissue machine, so that the source of the roll paper is conveniently controlled, and safe and sanitary use of the intelligent tissue machine is ensured.

Description

Technical Field

[0001] This invention relates to the field of tissue paper machine technology, specifically to a roll paper and intelligent tissue paper machine. Background Technology

[0002] Smart tissue dispensers are hygiene devices that replace traditional tissue boxes and are widely used in high-end hotels and shopping malls. Smart tissue dispensers can automatically feed, cut, and dispense tissues or towels. To enable real-time detection / monitoring of the remaining amount of tissues in the roll, some smart tissue dispensers are equipped with a tissue quantity monitoring device or tissue quantity sensor.

[0003] Chinese patent CN106725042A discloses an intelligent towel and tissue dispenser, which includes a frame, a housing, a paper tray, a paper feeding mechanism, a paper cutting mechanism, a paper dispensing mechanism, a touch screen, and a controller. The paper tray, paper feeding mechanism, paper cutting mechanism, and paper dispensing mechanism are arranged from top to bottom within the housing, which includes a front housing and a rear housing. The touch screen is located on the front housing. This patent uses a rotary mechanism composed of a cam and a push plate bracket to drive the moving blade bracket. The drive motor rotates only in one direction, resulting in stable operation and low noise. It employs an improved dual-moving-blade structure, ensuring a straight cut between the moving and stationary blades for stable cutting and reducing the risk of blade jamming. A paper quantity monitoring device is included to monitor towel consumption at any time.

[0004] Chinese patent CN216602676U discloses a smart tissue dispenser and a smart bathroom device. The smart tissue dispenser includes: a main body with an inner cavity for accommodating a roll of toilet paper and a paper outlet; a mounting component disposed within the main body, the mounting component including a rotating part for mounting the roll of toilet paper and rotating it; a tissue remaining quantity detection module for sensing the remaining amount of toilet paper; and a communication module electrically connected to the tissue remaining quantity detection module and communicatively connected to a terminal device for sending the tissue remaining quantity information sensed by the tissue remaining quantity detection module to the terminal device. The solution provided by this application can detect the remaining amount of toilet paper, improving convenience and user experience.

[0005] The shortcomings of existing roll paper and smart tissue dispensers are:

[0006] 1. After a smart tissue dispenser is sold and put into use, the tissue rolls will continue to wear out. If users replace the tissue rolls with substandard quality themselves, it may cause paper jams, damage the machine, or the tissue rolls may not meet hygiene standards, posing health risks. Therefore, it is necessary to improve both the tissue rolls and the smart tissue dispenser so that the smart tissue dispenser can only use tissue rolls with specific structures, from specific manufacturers, of specific quality, and made of specific materials, thus ensuring a good user experience.

[0007] 2. Existing paper quantity monitoring functions are particularly complex to implement. For example, the paper quantity monitoring device in Chinese patent CN106725042A includes a rocker arm, a tension spring, and an adjustable resistor. The slider of the adjustable resistor undergoes relative displacement in the groove, resulting in a certain change in resistance, which is output to the controller and converted into the corresponding amount of paper towels consumed. Chinese patent CN216602676U uses a distance sensor, which is set on the mounting part or the main body. It obtains the remaining thickness of the paper roll by detecting the radius of the roll, and then calculates the remaining amount of paper towels using a preset calculation method. Summary of the Invention

[0008] This invention aims to solve the technical problems in the prior art where users replacing substandard toilet paper rolls may cause paper jams, damage to the machine, or substandard hygiene conditions of the toilet paper rolls, posing health risks. The invention provides a smart tissue dispenser that uses RFID electronic tags on the paper core tubes of the toilet paper rolls and RFID readers on the dispenser to facilitate the control of the toilet paper roll source, ensuring the safe and hygienic use of the smart tissue dispenser.

[0009] The technical problem to be solved by this invention is to provide an intelligent tissue dispenser with a paper quantity sensor, which has a simple structure, requires no complicated calculations, and can easily read the remaining paper quantity of the roll.

[0010] To achieve the above objectives, the present invention provides the following technical solution:

[0011] A roll of paper includes a core tube and a roll of paper wound on the core tube. The core tube is equipped with an RFID electronic tag, which stores product information corresponding to the roll of paper.

[0012] Preferably, the RFID electronic tag is installed on the outer wall or inner wall of the paper core tube or embedded in the paper core tube.

[0013] A smart tissue dispenser includes a frame, a main control board mounted on the frame, and a roll of tissue paper. The frame has a paper roller for mounting the roll of tissue paper. The roll of tissue paper includes a core tube and a roll of paper wound around the core tube. The dispenser also includes an RFID system consisting of RFID electronic tags and a reader. The RFID electronic tags are attached to the core tube, and the reader is mounted on the frame. The RFID electronic tags are communicatively connected to the reader, and each RFID electronic tag stores product information corresponding to the roll of tissue paper. The reader is communicatively connected to the main control board.

[0014] Radio Frequency Identification (RFID) is a non-contact automatic identification technology. It uses electronic tags or RFID cards as recording media to identify targets and exchange data. The RFID system of this invention can utilize commercially available mature solutions. The RFID electronic tag is the core component of the RFID system, containing a data storage chip and an antenna. The reader is responsible for transmitting radio frequency signals to activate the electronic tag, receiving the response signal returned by the electronic tag, acquiring the data stored in the electronic tag, and sending the data to the RFID electronic tag for storage.

[0015] The RFID electronic tag of this invention stores product information corresponding to the toilet paper roll. This product information includes product number and / or manufacturer information and / or material information and / or quality information. If the reader cannot read the product information or reads incorrect product information, the main control board determines that the toilet paper roll is a substandard product, and the smart tissue dispenser will not operate. The principles and structure of the above data storage, reading, and determination are common knowledge in the field and will not be elaborated further here.

[0016] Preferably, the paper shaft is a hollow shaft, and the reader is connected to an external antenna disposed inside the hollow shaft. The function of the external antenna is to enhance the transmission and reception capabilities of radio frequency signals, overcome the shortcomings of the built-in antenna in terms of communication distance, coverage, and environmental adaptability, and ensure stable communication between the electronic tag and the reader.

[0017] Preferably, the reader includes an RFID driving circuit and an antenna circuit communicatively connected to the RFID driving circuit;

[0018] The RFID driving circuit includes a chip U1-R. Pin 6 of the chip U1-R is connected to the positive terminal of a 3.3V power supply through a resistor R3-R. Pins 6, 23, 24, 29, 30, and 31 of the chip U1-R are connected to the main control board. Pins 1, 4, 5, 10, and 18 of the chip U1-R are all connected to GND.

[0019] Pin 15 of the chip U1-R is connected to one end of capacitors C1-R and C2-R and the positive terminal of the 3.3V power supply, and the other ends of capacitors C1-R and C2-R are connected in parallel.

[0020] The antenna circuit includes an external antenna interface T1-R. Pin 1 of the external antenna interface T1-R is connected to a resistor R5-R. The other end of the resistor R5-R is connected to one end of capacitors C6-R, C5-R, C15-R, C16-R, and C3-R. The other end of capacitors C15-R, C16-R, and C3-R is connected to one end of capacitor C4-R and one end of inductor L1-R1. The other end of inductor L1-R1 is connected to pin 11 of chip U1-R.

[0021] Pin 2 of the external antenna interface T1-R is connected to one end of capacitors C9-R, C8-R, C10-R, C17-R, and C18-R via resistor R6-R. The other end of capacitors C9-R and C8-R is connected to the other end of capacitors C6-R, C5-R, C4-R, and C7-R, as well as pin 14 of chip U1-R. The other end of capacitors C10-R, C17-R, and C18-R is connected to capacitor C7-R, one end of resistor R2-R, and one end of inductor L2-R1. The other end of inductor L2-R1 is connected to pin 13 of chip U1-R. The other end of R2-R is connected to one end of capacitor C11-R. The other end of capacitor C11-R is connected to one end of resistor R1-R and pin 17 of chip U1-R. The other end of resistor R1-R is connected to pin 16 of chip U1-R and one end of capacitor C12-R. The other end of capacitor C12-R is connected to one end of capacitors C13-R and C14-R and connected to GND. The other ends of capacitors C13-R and C14-R are connected to pins 21 and 22 of chip U1-R, respectively. A transistor Y1-R is connected between pins 21 and 22 of chip U1-R.

[0022] The external antenna is electrically connected to the external antenna interface T1-R.

[0023] Preferably, the frame is further equipped with a paper quantity sensor for detecting the remaining paper quantity on the roll, and the paper quantity sensor is communicatively connected to the main control board. The paper quantity sensor outputs the remaining paper quantity information of the roll, which is then displayed on the machine's display screen by the main control board.

[0024] Preferably, the paper quantity sensor includes three sets of infrared transmitting and receiving circuits, which are arranged vertically above the hollow shaft and attached to the side of the paper roll. The position of each set of infrared transmitting and receiving circuits corresponds to a different thickness of the paper roll, and each set of infrared transmitting and receiving circuits is communicatively connected to the main control board.

[0025] Preferably, in the three sets of infrared transmitting and receiving circuits, the first set of infrared transmitting and receiving circuits includes a first infrared transmitting drive circuit and a first infrared receiving judgment circuit arranged side by side with the first infrared transmitting drive circuit; the second set of infrared transmitting and receiving circuits includes a second infrared transmitting drive circuit and a second infrared receiving judgment circuit arranged side by side with the second infrared transmitting drive circuit; and the third set of infrared transmitting and receiving circuits includes a third infrared transmitting drive circuit and a third infrared receiving judgment circuit arranged side by side with the third infrared transmitting drive circuit; the first infrared receiving judgment circuit, the second infrared receiving judgment circuit, and the third infrared receiving judgment circuit are respectively communicatively connected to the main control board.

[0026] Preferably, the first infrared emission driving circuit includes a light-emitting diode D1-L, the positive terminal of the light-emitting diode D1-L is connected to the positive terminal of a 5V power supply through a resistor R3-L, and the negative terminal of the light-emitting diode D1-L is connected to GND;

[0027] The first infrared receiving and judgment circuit includes an infrared receiving tube T1-L. Pin 2 of the infrared receiving tube T1-L is connected to one end of resistor R5-L and pin 1 of transistor Q1-L. Pin 2 of transistor Q1-L is connected to pin 1 of infrared receiving tube T1-L. The other end of resistor R5-L is connected to the positive terminal of 5V power supply and one end of resistor R1-L. The other end of resistor R1-L is connected to pin 3 of transistor Q1-L and one end of resistor R7-L. The other end of resistor R7-L is connected to the negative terminal of diode D6-L and connected to the main control board. The positive terminal of diode D6-L is connected to GND.

[0028] The second infrared emission driving circuit includes a light-emitting diode D2-L. The positive terminal of the light-emitting diode D2-L is connected to the positive terminal of a 5V power supply through a resistor R4-L, and the negative terminal of the light-emitting diode D2-L is connected to GND.

[0029] The second infrared receiving and judgment circuit includes an infrared receiving tube T2-L. Pin 2 of the infrared receiving tube T2-L is connected to one end of resistor R6-L and pin 1 of transistor Q2-L. Pin 2 of transistor Q2-L is connected to pin 1 of infrared receiving tube T2-L. The other end of resistor R6-L is connected to the positive terminal of 5V power supply and one end of resistor R2-L. The other end of resistor R2-L is connected to pin 3 of transistor Q2-L and one end of resistor R8-L. The other end of resistor R8-L is connected to the negative terminal of diode D7-L and connected to the main control board. The positive terminal of diode D7-L is connected to GND.

[0030] The third infrared emission driving circuit includes a light-emitting diode D3-L. The positive terminal of the light-emitting diode D3-L is connected to the positive terminal of a 5V power supply through a resistor R10-L, and the negative terminal of the light-emitting diode D3-L is connected to GND.

[0031] The third infrared receiving and judgment circuit includes an infrared receiving tube T3-L. Pin 2 of the infrared receiving tube T3-L is connected to one end of resistor R12-L and pin 1 of transistor Q3-L. Pin 2 of transistor Q3-L is connected to pin 1 of infrared receiving tube T3-L. The other end of resistor R12-L is connected to the positive terminal of 5V power supply and one end of resistor R9-L. The other end of resistor R9-L is connected to pin 3 of transistor Q3-L and one end of resistor R11-L. The other end of resistor R11-L is connected to the negative terminal of diode D8-L and connected to the main control board. The positive terminal of diode D8-L is connected to GND.

[0032] Preferably, the main control board is connected to a wireless communication module, which can be a Bluetooth module, a Wi-Fi module, or a cellular communication module. The cellular communication module includes 2G / 3G / 4G / 5G modules, etc. Through this wireless communication module, the smart tissue dispenser can communicate with the user's smart terminal (mobile phone, tablet, etc.), report the remaining tissue quantity to the user, and issue reminders.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] 1. This smart tissue dispenser uses RFID electronic tags on the paper core tubes of the roll paper and a reader / writer on the dispenser to easily control the source of the roll paper and ensure the safe and hygienic use of the smart tissue dispenser.

[0035] 2. A paper quantity sensor is installed in the smart tissue dispenser. Three sets of infrared transmitting and receiving circuits are arranged vertically above the paper shaft and attached to the side of the roll of paper. Utilizing the principle of infrared reflection, the structure is simple and does not require complicated calculations. It can easily obtain the remaining amount of paper in the current roll. Attached Figure Description

[0036] Figure 1 This is a circuit diagram of the reader / writer of the present invention;

[0037] Figure 2 This is a circuit diagram of the paper quantity sensor of the present invention;

[0038] Figure 3 This is a structural diagram of a roll of paper;

[0039] Figure 4 This is a diagram of the internal structure of a roll of paper;

[0040] Figure 5 This is a schematic diagram of the roll paper assembly;

[0041] Figure 6 This is a schematic diagram of the machine frame before the roll paper is installed;

[0042] Figure 7 This is a diagram showing unused rolls of paper being installed on the frame;

[0043] Figure 8 This is a diagram showing what happens when roll paper has been used to a certain extent.

[0044] In the diagram: 1. Paper core tube; 2. Paper roll; 3. RFID electronic tag; 4. Frame; 5. Hollow shaft; 6. Paper quantity sensor; 61. First group of infrared transmitting and receiving circuits; 62. Second group of infrared transmitting and receiving circuits; 63. Third group of infrared transmitting and receiving circuits. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Reference Figure 3-5 A type of roll paper includes a core tube 1 and a roll of paper 2 wound on the core tube. The core tube 1 is equipped with an RFID electronic tag 3, which stores product information corresponding to the roll paper. The RFID electronic tag can be optionally installed on the outer wall or inner wall of the core tube 1, or embedded within the core tube.

[0047] Reference Figure 3-8 A smart tissue dispenser includes a frame 4, a main control board mounted on the frame, and a roll of tissue paper. The frame has a paper shaft 5 for mounting the roll of tissue paper. The roll of tissue paper includes a core tube 1 and a roll of paper 2 wound on the core tube. The dispenser also includes an RFID system consisting of RFID electronic tags and a reader / writer. The RFID electronic tags are located on the core tube 1, and the reader / writer is mounted on the frame 4. The RFID electronic tags 3 are communicatively connected to the reader / writer and store product information corresponding to the roll of tissue paper. The reader / writer is communicatively connected to the main control board.

[0048] The paper shaft 5 is a hollow shaft, and the reader is connected to an external antenna located inside the hollow shaft.

[0049] Reference Figure 1 The reader includes an RFID driving circuit and an antenna circuit that is communicatively connected to the RFID driving circuit.

[0050] The RFID driving circuit includes a chip U1-R. Pin 6 of the chip U1-R is connected to the positive terminal of a 3.3V power supply through a resistor R3-R. Pins 6, 23, 24, 29, 30, and 31 of the chip U1-R are connected to the main control board. Pins 1, 4, 5, 10, and 18 of the chip U1-R are all connected to GND.

[0051] Pin 15 of the chip U1-R is connected to one end of capacitors C1-R and C2-R and the positive terminal of the 3.3V power supply, and the other ends of capacitors C1-R and C2-R are connected in parallel.

[0052] The antenna circuit includes an external antenna interface T1-R. Pin 1 of the external antenna interface T1-R is connected to a resistor R5-R. The other end of the resistor R5-R is connected to one end of capacitors C6-R, C5-R, C15-R, C16-R, and C3-R. The other end of capacitors C15-R, C16-R, and C3-R is connected to one end of capacitor C4-R and one end of inductor L1-R1. The other end of inductor L1-R1 is connected to pin 11 of chip U1-R.

[0053] Pin 2 of the external antenna interface T1-R is connected to one end of capacitors C9-R, C8-R, C10-R, C17-R, and C18-R via resistor R6-R. The other end of capacitors C9-R and C8-R is connected to the other end of capacitors C6-R, C5-R, C4-R, and C7-R, as well as pin 14 of chip U1-R. The other end of capacitors C10-R, C17-R, and C18-R is connected to capacitor C7-R, one end of resistor R2-R, and one end of inductor L2-R1. The other end of inductor L2-R1 is connected to pin 13 of chip U1-R. The other end of R2-R is connected to one end of capacitor C11-R. The other end of capacitor C11-R is connected to one end of resistor R1-R and pin 17 of chip U1-R. The other end of resistor R1-R is connected to pin 16 of chip U1-R and one end of capacitor C12-R. The other end of capacitor C12-R is connected to one end of capacitors C13-R and C14-R and connected to GND. The other ends of capacitors C13-R and C14-R are connected to pins 21 and 22 of chip U1-R, respectively. A transistor Y1-R is connected between pins 21 and 22 of chip U1-R.

[0054] The external antenna is electrically connected to the external antenna interface T1-R.

[0055] Reference Figure 6-8 The frame is also equipped with a paper quantity sensor 6 for detecting the remaining paper quantity on the roll. The paper quantity sensor 6 is communicatively connected to the main control board. The paper quantity sensor 6 uses the principle of infrared reflection. When it senses a signal corresponding to the remaining paper quantity on the roll, it outputs it to the main control board. The main control board then outputs the signal to the machine's display screen, or issues a voice reminder, or sends a reminder to the user via a wireless communication module.

[0056] The paper quantity sensor includes three sets of infrared transmitting and receiving circuits 61, 62, and 63. The three sets of infrared transmitting and receiving circuits are arranged vertically above the side of the hollow shaft 5 and are attached to the side of the roll paper 2. The position of each set of infrared transmitting and receiving circuits corresponds to a different thickness of the roll paper 2. Each set of infrared transmitting and receiving circuits is communicatively connected to the main control board.

[0057] In the three sets of infrared transmitting and receiving circuits, the first set of infrared transmitting and receiving circuits 61 includes a first infrared transmitting drive circuit and a first infrared receiving judgment circuit arranged side by side with the first infrared transmitting drive circuit; the second set of infrared transmitting and receiving circuits 62 includes a second infrared transmitting drive circuit and a second infrared receiving judgment circuit arranged side by side with the second infrared transmitting drive circuit; and the third set of infrared transmitting and receiving circuits 63 includes a third infrared transmitting drive circuit and a third infrared receiving judgment circuit arranged side by side with the third infrared transmitting drive circuit. The first infrared receiving judgment circuit, the second infrared receiving judgment circuit, and the third infrared receiving judgment circuit are respectively connected to the main control board for communication.

[0058] Reference Figure 2 The first infrared emission driving circuit includes a light-emitting diode D1-L, the positive terminal of which is connected to the positive terminal of a 5V power supply through a resistor R3-L, and the negative terminal of which is connected to GND.

[0059] The first infrared receiving and judgment circuit includes an infrared receiving tube T1-L. Pin 2 of the infrared receiving tube T1-L is connected to one end of resistor R5-L and pin 1 of transistor Q1-L. Pin 2 of transistor Q1-L is connected to pin 1 of infrared receiving tube T1-L. The other end of resistor R5-L is connected to the positive terminal of 5V power supply and one end of resistor R1-L. The other end of resistor R1-L is connected to pin 3 of transistor Q1-L and one end of resistor R7-L. The other end of resistor R7-L is connected to the negative terminal of diode D6-L and connected to the main control board. The positive terminal of diode D6-L is connected to GND.

[0060] The second infrared emission driving circuit includes a light-emitting diode D2-L. The positive terminal of the light-emitting diode D2-L is connected to the positive terminal of a 5V power supply through a resistor R4-L, and the negative terminal of the light-emitting diode D2-L is connected to GND.

[0061] The second infrared receiving and judgment circuit includes an infrared receiving tube T2-L. Pin 2 of the infrared receiving tube T2-L is connected to one end of resistor R6-L and pin 1 of transistor Q2-L. Pin 2 of transistor Q2-L is connected to pin 1 of infrared receiving tube T2-L. The other end of resistor R6-L is connected to the positive terminal of 5V power supply and one end of resistor R2-L. The other end of resistor R2-L is connected to pin 3 of transistor Q2-L and one end of resistor R8-L. The other end of resistor R8-L is connected to the negative terminal of diode D7-L and connected to the main control board. The positive terminal of diode D7-L is connected to GND.

[0062] The third infrared emission driving circuit includes a light-emitting diode D3-L. The positive terminal of the light-emitting diode D3-L is connected to the positive terminal of a 5V power supply through a resistor R10-L, and the negative terminal of the light-emitting diode D3-L is connected to GND.

[0063] The third infrared receiving and judgment circuit includes an infrared receiving tube T3-L. Pin 2 of the infrared receiving tube T3-L is connected to one end of resistor R12-L and pin 1 of transistor Q3-L. Pin 2 of transistor Q3-L is connected to pin 1 of infrared receiving tube T3-L. The other end of resistor R12-L is connected to the positive terminal of 5V power supply and one end of resistor R9-L. The other end of resistor R9-L is connected to pin 3 of transistor Q3-L and one end of resistor R11-L. The other end of resistor R11-L is connected to the negative terminal of diode D8-L and connected to the main control board. The positive terminal of diode D8-L is connected to GND.

[0064] The main control board is connected to a wireless communication module, which can be a Bluetooth module, a Wi-Fi module, or a cellular communication module. Cellular communication modules include 2G / 3G / 4G / 5G modules, etc. The working principle of the wireless communication module is common knowledge in the field.

[0065] As an example, the main control board of this invention can be selected from the GigaDevice GD32F303 chip, and the chip U1-R is selected from the NXP Semiconductors MF522. The chip U1-R communicates with the main control board through pin 6-RFID_RST, pin 23-RFID_IRQ, pin 24-RFID_SDA, pin 29-RFID_SCK, pin 30-RFID_MOSI, and pin 31-RFID_MISO.

[0066] RFID electronic tags can be selected from Impinj's M700 series (such as M730, M750, M780, etc.) and Alien's ALN-9662, ALN-9610, ALN-9634 and other models.

[0067] The first infrared receiving and judgment circuit is connected to the main control board through IR_INPUT1, the second infrared receiving and judgment circuit is connected to the main control board through IR_INPUT2, and the third infrared receiving and judgment circuit is connected to the main control board through IR_INPUT3.

[0068] The working principle of this invention is:

[0069] The paper core tube 1 of the roll paper is installed on the hollow shaft 5 of the frame.

[0070] The reader on the rack transmits energy and data to the RFID electronic tag on the paper core tube 1 of the roll of paper via radio frequency signals. The RFID electronic tag stores product information, including the product number of the roll of paper and / or manufacturer information and / or material information and / or quality information. If the reader cannot read the product information or reads incorrect product information, the main control board determines that the roll of paper is a defective product, and the smart tissue dispenser will not work. Only when the reader reads the correct product information will the main control board control the smart tissue dispenser to work normally.

[0071] The paper quantity sensor consists of multiple sets of infrared transmitting and receiving circuits 61, 62, and 63 arranged vertically from top to bottom. The height of the topmost infrared transmitting driving circuit 61 should be lower than the top height of the unused roll of paper 2, and the height of the bottommost third set of infrared transmitting and receiving circuits 63 should be higher than the top height of the paper core tube 1 after the roll of paper 2 is completely consumed. Therefore, after the unused roll of paper is installed, the roll will completely obscure the paper quantity sensor. Figure 7 As shown. Those skilled in the art can also flexibly set the position of the infrared transmitting and receiving circuits according to actual needs.

[0072] The three sets of infrared transmitting and receiving circuits represent four paper weight levels, corresponding to high, medium, low, and ultra-low from top to bottom. After the unused roll of paper 2 is installed onto the paper core tube, the main control board controls the 5V power supply to conduct, and the LEDs of the three sets of infrared transmitting drive circuits emit infrared signals. Since all three sets of infrared transmitting and receiving circuits are in contact with the side of the roll of paper 2, the three sets of infrared signals are blocked and reflected back to the corresponding infrared receiving tubes. Figure 2 IR_INPUT1 / IR_INPUT2 / IR_INPUT3 all output high-level signals, and the main control board determines that the paper quantity is "high" in this state.

[0073] When toilet paper roll 2 has been used to a certain extent, such as Figure 8 As shown, the first set of infrared transmitting and receiving circuits 61 is not blocked, while the second and third sets of infrared transmitting and receiving circuits are blocked. Infrared receiving tube T1-L cannot receive infrared signals, while infrared receiving tubes T2-L and T3-L can receive infrared signals. Figure 2 The IR_INPUT1 outputs a low-level signal, while IR_INPUT2 / IR_INPUT3 output a high-level signal. Based on this, the main control board determines that the paper quantity is "medium" in this state.

[0074] After the toilet paper roll 2 continues to be used to a certain extent, the first and second sets of infrared transmitting and receiving circuits will no longer be blocked, while the third set of infrared transmitting and receiving circuits will be blocked. Infrared receiving tubes T1-L and T2-L will no longer receive infrared signals, but infrared receiving tube T3-L will be able to receive infrared signals. Figure 2The IR_INPUT1 / IR_INPUT2 outputs a low-level signal, and the IR_INPUT3 outputs a high-level signal. Based on this, the main control board determines that the paper quantity is "low" in this state.

[0075] If toilet paper roll 2 continues to be used, the first, second, and third sets of infrared transmitting and receiving circuits, as well as the third set of sensor infrared transmitting and receiving circuits, are not blocked. Therefore, infrared receiving tubes T1-L, T2-L, and T3-L cannot receive infrared signals. Figure 2 IR_INPUT1 / IR_INPUT2 / IR_INPUT3 all output low-level signals, which the main control board uses to determine that the paper level is "extremely low" and reminds the user to change the paper roll via the wireless communication module. Alternatively, the reminder information can be displayed on the device's screen, or a voice reminder module can be set up; these methods are standard practice in the field and will not be elaborated further.

[0076] All parts not described in this invention are the same as or can be implemented using existing technology. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A roll of paper, comprising a core tube and a roll of paper wound on the core tube, characterized in that: The paper core tube is equipped with an RFID electronic tag, which stores product information corresponding to the roll of paper.

2. The roll paper according to claim 1, characterized in that: The RFID electronic tag is installed on the outer or inner wall of the paper core tube or embedded in the paper core tube.

3. A smart tissue dispenser, comprising a frame and a main control board and a roll of tissue paper mounted on the frame, wherein the frame is provided with a paper shaft for mounting the roll of tissue paper, the roll of tissue paper comprising a core tube and a roll of paper wound on the core tube, characterized in that: It also includes an RFID system, which consists of RFID electronic tags and readers. The RFID electronic tags are placed on the paper core tubes, and the readers are mounted on the frame. The RFID electronic tags are communicatively connected to the readers, and the RFID electronic tags store product information corresponding to the rolls of paper. The readers are communicatively connected to the main control board.

4. The intelligent tissue dispenser according to claim 3, characterized in that: The paper shaft is a hollow shaft, and the reader is connected to an external antenna located inside the hollow shaft.

5. The intelligent tissue dispenser according to claim 4, characterized in that: The reader includes an RFID driving circuit and an antenna circuit that is communicatively connected to the RFID driving circuit. The RFID driving circuit includes a chip U1-R. Pin 6 of the chip U1-R is connected to the positive terminal of a 3.3V power supply through a resistor R3-R. Pins 6, 23, 24, 29, 30, and 31 of the chip U1-R are connected to the main control board. Pins 1, 4, 5, 10, and 18 of the chip U1-R are all connected to GND. Pin 15 of the chip U1-R is connected to one end of capacitors C1-R and C2-R and the positive terminal of the 3.3V power supply, and the other ends of capacitors C1-R and C2-R are connected in parallel. The antenna circuit includes an external antenna interface T1-R. Pin 1 of the external antenna interface T1-R is connected to a resistor R5-R. The other end of the resistor R5-R is connected to one end of capacitors C6-R, C5-R, C15-R, C16-R, and C3-R. The other end of capacitors C15-R, C16-R, and C3-R is connected to one end of capacitor C4-R and one end of inductor L1-R1. The other end of inductor L1-R1 is connected to pin 11 of chip U1-R. Pin 2 of the external antenna interface T1-R is connected to one end of capacitors C9-R, C8-R, C10-R, C17-R, and C18-R via resistor R6-R. The other end of capacitors C9-R and C8-R is connected to the other end of capacitors C6-R, C5-R, C4-R, and C7-R, as well as pin 14 of chip U1-R. The other end of capacitors C10-R, C17-R, and C18-R is connected to capacitor C7-R, one end of resistor R2-R, and one end of inductor L2-R1. The other end of inductor L2-R1 is connected to pin 13 of chip U1-R. The other end of R2-R is connected to one end of capacitor C11-R. The other end of capacitor C11-R is connected to one end of resistor R1-R and pin 17 of chip U1-R. The other end of resistor R1-R is connected to pin 16 of chip U1-R and one end of capacitor C12-R. The other end of capacitor C12-R is connected to one end of capacitors C13-R and C14-R and connected to GND. The other ends of capacitors C13-R and C14-R are connected to pins 21 and 22 of chip U1-R, respectively. A transistor Y1-R is connected between pins 21 and 22 of chip U1-R. The external antenna is electrically connected to the external antenna interface T1-R.

6. The intelligent tissue dispenser according to claim 3, characterized in that: The frame is also equipped with a paper quantity sensor for detecting the amount of paper remaining on the roll, and the paper quantity sensor is communicatively connected to the main control board.

7. The intelligent tissue dispenser according to claim 6, characterized in that: The paper quantity sensor includes three sets of infrared transmitting and receiving circuits. The three sets of infrared transmitting and receiving circuits are arranged vertically above the hollow shaft and are attached to the side of the paper roll. The position of each set of infrared transmitting and receiving circuits corresponds to a different thickness of the paper roll. Each set of infrared transmitting and receiving circuits is communicatively connected to the main control board.

8. The intelligent tissue dispenser according to claim 7, characterized in that: In the three sets of infrared transmitting and receiving circuits, the first set of infrared transmitting and receiving circuits includes a first infrared transmitting drive circuit and a first infrared receiving judgment circuit arranged side by side with the first infrared transmitting drive circuit; the second set of infrared transmitting and receiving circuits includes a second infrared transmitting drive circuit and a second infrared receiving judgment circuit arranged side by side with the second infrared transmitting drive circuit; and the third set of infrared transmitting and receiving circuits includes a third infrared transmitting drive circuit and a third infrared receiving judgment circuit arranged side by side with the third infrared transmitting drive circuit; the first infrared receiving judgment circuit, the second infrared receiving judgment circuit, and the third infrared receiving judgment circuit are respectively communicatively connected to the main control board.

9. The intelligent tissue dispenser according to claim 8, characterized in that: The first infrared emission driving circuit includes a light-emitting diode D1-L. The positive terminal of the light-emitting diode D1-L is connected to the positive terminal of a 5V power supply through a resistor R3-L, and the negative terminal of the light-emitting diode D1-L is connected to GND. The first infrared receiving and judgment circuit includes an infrared receiving tube T1-L. Pin 2 of the infrared receiving tube T1-L is connected to one end of resistor R5-L and pin 1 of transistor Q1-L. Pin 2 of transistor Q1-L is connected to pin 1 of infrared receiving tube T1-L. The other end of resistor R5-L is connected to the positive terminal of 5V power supply and one end of resistor R1-L. The other end of resistor R1-L is connected to pin 3 of transistor Q1-L and one end of resistor R7-L. The other end of resistor R7-L is connected to the negative terminal of diode D6-L and connected to the main control board. The positive terminal of diode D6-L is connected to GND. The second infrared emission driving circuit includes a light-emitting diode D2-L. The positive terminal of the light-emitting diode D2-L is connected to the positive terminal of a 5V power supply through a resistor R4-L, and the negative terminal of the light-emitting diode D2-L is connected to GND. The second infrared receiving and judgment circuit includes an infrared receiving tube T2-L. Pin 2 of the infrared receiving tube T2-L is connected to one end of resistor R6-L and pin 1 of transistor Q2-L. Pin 2 of transistor Q2-L is connected to pin 1 of infrared receiving tube T2-L. The other end of resistor R6-L is connected to the positive terminal of 5V power supply and one end of resistor R2-L. The other end of resistor R2-L is connected to pin 3 of transistor Q2-L and one end of resistor R8-L. The other end of resistor R8-L is connected to the negative terminal of diode D7-L and connected to the main control board. The positive terminal of diode D7-L is connected to GND. The third infrared emission driving circuit includes a light-emitting diode D3-L. The positive terminal of the light-emitting diode D3-L is connected to the positive terminal of a 5V power supply through a resistor R10-L, and the negative terminal of the light-emitting diode D3-L is connected to GND. The third infrared receiving and judgment circuit includes an infrared receiving tube T3-L. Pin 2 of the infrared receiving tube T3-L is connected to one end of resistor R12-L and pin 1 of transistor Q3-L. Pin 2 of transistor Q3-L is connected to pin 1 of infrared receiving tube T3-L. The other end of resistor R12-L is connected to the positive terminal of 5V power supply and one end of resistor R9-L. The other end of resistor R9-L is connected to pin 3 of transistor Q3-L and one end of resistor R11-L. The other end of resistor R11-L is connected to the negative terminal of diode D8-L and connected to the main control board. The positive terminal of diode D8-L is connected to GND.

10. The intelligent tissue dispenser according to claim 3, characterized in that: The main control board is connected to a wireless communication module, which can be a Bluetooth module, a Wi-Fi module, or a cellular communication module.

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