Sand blasting bottle automatic identification system of dental sand blasting machine

Abstract

The application discloses a sand blasting bottle automatic identification system of a dental sand blasting machine and belongs to the field of dental medical instruments. The sand blasting bottle automatic identification system of the dental sand blasting machine comprises an identification system composed of a magnetic induction identification module, a data processing circuit, a fixing module, a sand blasting execution module, a display module and a stopping module, and a shell with a tray arranged at the upper end. The application solves the problem that the existing dental sand blasting machine directly causes the consequence of an unsatisfactory cleaning effect or even damage to the gums of a patient due to insufficient experience or forgetting to adjust the air pressure power during the sand blasting process. The power recording module in the sand blasting execution module can record the preset initial power value corresponding to each digital signal in advance, the MCU micro processing circuit is used for interpreting the digital signal transmitted by the magnetic induction receiving circuit board and corresponding sand blasting power, and the sand blasting power can be set by the power setting module in the sand blasting execution module.

Description

Technical Field

[0001] This invention relates to the field of dental medical devices, specifically to an automatic identification system for sandblasting bottles in a dental sandblasting machine. Background Technology

[0002] The automatic identification system for the sandblasting bottle of a dental sandblasting machine is an intelligent safety device. Its core function is to automatically distinguish between two different working modes: supragingival sandblasting and subgingival sandblasting. The system uses built-in sensors to identify key parameters of the powder in the sandblasting bottle. By identifying these differences, the system can automatically switch and lock the corresponding working pressure and mode of the equipment, thereby effectively preventing clinical risks caused by misuse of powder and ensuring the safety and accuracy of treatment.

[0003] Chinese patent CN215349595U discloses a dental sandblasting machine that can identify sandblasting bottles, including sandblasting bottles, magnets, magnetic induction recognition units, fixed top covers, data processing circuits and display modules. The sandblasting bottles can be distinguished and identified, avoiding confusion, eliminating usage errors, and reducing the labor intensity of operators.

[0004] Supragingival air polishing requires a stronger polishing effect than subgingival air polishing. The two air polishing modes differ in the required abrasive particle size and air pressure. During the air polishing process, the dental air polisher of the aforementioned patent needs to set different air pressure power based on experience when it identifies different air polishing bottles. However, due to insufficient experience or forgetting to adjust the air pressure power, it will directly lead to unsatisfactory cleaning results or even damage to the patient's gums. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic identification system for the sandblasting bottle of a dental sandblasting machine. The power recording module in the sandblasting execution module can pre-record the preset initial power value corresponding to each digital signal, while the MCU microprocessor circuit is used to interpret the digital signal transmitted from the magnetic induction receiving circuit board and correspond it to its sandblasting power. The sandblasting power can be set by the power setting module in the sandblasting execution module. Based on the presence and position of the magnet at the lower end of the sandblasting bottle, the magnetic induction identification module makes adjustments, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic sandblasting bottle identification system for a dental sandblasting machine, comprising an identification system consisting of a magnetic induction identification module, a data processing circuit, a fixing module, a sandblasting execution module, a display module, and a stop module, and a housing with a tray at the top. A sandblasting bottle with a support is mounted on the upper end of the tray, and a magnet is mounted on the lower end of the support. The magnetic induction identification module detects the presence and position of the magnet at the lower end of the sandblasting bottle. The position of each magnet corresponds to a sandblasting intensity. The magnetic induction signal is identified by the magnetic induction identification module. The data processing circuit consists of a magnetic induction receiving circuit board and an MCU microprocessor. The circuit consists of a magnetic induction receiving circuit board that converts the magnetic induction signal into a digital signal that can be directly read by the MCU microprocessor circuit. The MCU microprocessor circuit interprets the digital signal transmitted from the magnetic induction receiving circuit board and corresponds it to the sandblasting power. It then sends the determined sandblasting power command to the sandblasting execution module. The data processing circuit coordinates the data flow between the magnetic induction identification module, the display module, the fixing module, and the sandblasting execution module. Through magnetic induction sensors at different positions, it directly detects the presence and position of the magnet at the lower end of the upper sand bottle. Based on the detection results, the sandblasting execution module can directly set the power and drive the sandblasting pump.

[0007] Preferably, the sandblasting execution module comprises a power setting module, a power recording module, a manual modification module, a sandblasting pump execution module, and a safety protection module. The power setting module receives instructions from the MCU microprocessor circuit, queries the power recording module to determine a preset initial power value based on the instructions, and sets the voltage and current of the sandblasting pump motor based on the preset initial power value. The power recording module stores data and records the preset initial power value corresponding to each digital signal. The manual modification module is integrated into the display screen to allow users to fine-tune the power. The sandblasting pump execution module executes the sandblasting operation based on the power set by the power setting module. The safety protection module monitors the current and temperature of the sandblasting pump and dynamically adjusts the motor power of the sandblasting pump.

[0008] Preferably, a magnetic induction sensor is arranged inside the tray around the center of the tray, and the magnetic induction recognition module is built into the magnetic induction sensor. The bracket is located on one side of the center position at the lower end of the sand bottle. A sheet-like protective ring is arranged at the lower end of the tray. A transmission frame that is welded and fixed to the outer shell is arranged between the protective ring and the tray. Bidirectional threaded rods are arranged laterally on both sides inside the transmission frame. The magnetic induction sensor can directly detect the magnet at the lower end of the sand bottle. After detecting the magnet, the rotation of the bidirectional threaded rods is also started synchronously.

[0009] Preferably, clamps are provided on both sides of the two bidirectional threaded rods, and the bidirectional threaded rods pass through the clamps on both sides. The upper end of the clamps fits against the outer shell, and the through position of the clamps engages with the external thread of the bidirectional threaded rods. The relative movement of the clamps can be adjusted laterally by rotating the bidirectional threaded rods. The clamps can clamp the first connecting end and the second connecting end and fix the sand bottle at the upper end.

[0010] Preferably, a pressure sensor is provided on the side of the clamping piece. The pressure sensor detects the pressure when the clamping piece is clamping, which can prevent the clamping piece from excessively clamping the first connecting end and the second connecting end, thus avoiding damage to the first connecting end and the second connecting end.

[0011] Preferably, each of the two bidirectional threaded rods is equipped with a motor at one end. The outer wall of the motor is fixedly connected to the transmission frame by bolts. The pressure sensor is electrically connected to the corresponding motor. The output shaft of the motor can output to the bidirectional threaded rod. The rotation of the bidirectional threaded rod can actively adjust the clamping of the clamping plate laterally.

[0012] Preferably, one end of the housing is provided with a display screen, and a display module is built into the display screen for displaying images. The fixing module is used to drive the clamping piece to clamp the positions of the first connecting end and the second connecting end. The fixing module consists of a driving module, a pressure sensing unit, and a status indicator unit. The driving module is used to receive instructions from the MCU microprocessor circuit. The pressure sensing unit is built into a pressure sensor and converts the pressure signal into a continuous voltage signal that is read and received by the MCU microprocessor circuit. The status indicator unit receives instructions from the MCU microprocessor circuit and displays the current status on the display screen. The display screen can display the operating status of the identification system, which is convenient for users to use and observe directly.

[0013] Preferably, the stop module is used when replacing the sand bottle. The fixed module provides a start signal to the motor, so that the motor can drive the clamp to loosen the clamping of the first and second connecting ends. The stop module can assist the operation of the sand bottle.

[0014] Preferably, the safety protection module monitors the current and temperature of the sandblasting pump, and dynamically adjusts the motor power of the sandblasting pump when the current and temperature exceed a preset range, including:

[0015] Based on the time axis, the real-time current of the sandblasting pump motor and the real-time temperature of the sandblasting pump body are obtained, and the temperature change of the sandblasting pump body within a unit time is monitored; and the current change of the sandblasting pump motor within a unit time is monitored.

[0016] When the temperature change exceeds the first change threshold, or the current change exceeds the second change threshold, or both the temperature change and the current change exceed the corresponding change threshold, it is determined that the motor power of the current sandblasting pump needs to be dynamically adjusted.

[0017] The safety protection module calculates the adjustment coefficient of the sand pump motor power by acquiring the real-time current of the sand blasting pump motor and the real-time temperature of the sand blasting pump body at the current moment.

[0018] Based on the adjustment coefficient, and combined with the maximum allowable power of the sandblasting pump motor, the pulse value of the sandblasting pump, and the optimal operating temperature of the sandblasting pump body, the power of the sandblasting pump is dynamically adjusted to obtain the target power of the sandblasting pump motor.

[0019] Preferably, the security protection module includes:

[0020] The calculation submodule is used to monitor the current and temperature of the sandblasting pump motor and calculate the adjustment coefficient of the sandblasting pump motor power based on the current and temperature monitoring data.

[0021]

[0022] Where W1 represents the adjustment coefficient of the sandblasting pump motor power; k I Indicates current weight; k T Indicates temperature weight; k I +k T =1 and k I k T Greater than 0; ΔI 安全 This indicates the maximum allowable deviation of the current in the sandblasting pump motor; ΔT 安全 Indicates the maximum permissible temperature deviation within the sandblasting pump body; I 实测 Indicates the real-time current of the sandblasting pump motor; I 额定 This indicates the rated current of the sandblasting pump motor; T 泵 This indicates the real-time temperature of the sandblasting pump body; T 正常 The optimal operating temperature of the sandblasting pump body;

[0023] A dynamic adjustment submodule is used to dynamically adjust the power of the sandblasting pump using the adjustment coefficient.

[0024]

[0025] Where P1 represents the target power of the sandblasting pump motor; P max Indicates the maximum permissible power of the sandblasting pump motor; N burst N represents the number of continuous sandblasting pulses of the sandblasting pump; N0 represents the safe pulse threshold of the sandblasting pump; β represents the pulse attenuation coefficient; γ represents the pulse attenuation exponent; η represents the thermal inertia compensation coefficient; T 泵This indicates the real-time pump body temperature of the sandblasting pump; T 环境 Indicates ambient temperature; τ 热 S represents the thermal time constant of the sandblasting pump body. 监测 Indicates the real-time monitoring period; T 安全 This indicates the maximum permissible temperature rise of the sandblasting pump body from ambient temperature to the safe upper limit.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] The magnetic induction sensor of this invention has a built-in magnetic induction recognition module that can detect the presence and position of the magnet at the bottom of the sand bottle. The power recording module in the sandblasting execution module can pre-record the preset initial power value corresponding to each digital signal. The MCU microprocessor circuit is used to interpret the digital signal transmitted from the magnetic induction receiving circuit board and correspond it to its sandblasting power. The sandblasting power can be set by the power setting module in the sandblasting execution module. Based on the magnetic induction recognition module, the power is adjusted according to the presence and position of the magnet at the bottom of the sand bottle. Users do not need to set different sandblasting air pressure power based on experience, avoiding the consequences of unsatisfactory cleaning effect or even damage to the patient's gums due to insufficient experience or forgetting to adjust the air pressure power. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the external structure of the dental sandblasting machine of the present invention;

[0029] Figure 2 This is a schematic diagram of the clamping position of the clips in this invention;

[0030] Figure 3 This is a cross-sectional view of the detection position of the magnetic induction sensor of the present invention;

[0031] Figure 4 For the present invention Figure 3 Enlarged view of a portion of region A in the middle;

[0032] Figure 5 This is a schematic diagram showing the positional relationship of the pressure sensor of the present invention;

[0033] Figure 6 This is a schematic diagram of the identification system of the present invention.

[0034] In the diagram: 1. Outer shell; 2. Protective cover; 3. Tray; 4. Display screen; 5. Protective ring; 6. Connecting rod; 7. First connecting end; 8. Second connecting end; 9. Transmission frame; 10. Motor; 11. Pressure sensor; 12. Clamping plate; 13. Bidirectional threaded rod; 14. Bracket; 15. Magnet; 16. Magnetic induction sensor; 17. Sand bottle. Detailed Implementation

[0035] The present invention will be further described below with reference to specific embodiments.

[0036] like Figure 1 and Figure 2 As shown, an automatic identification system for a dental sandblasting machine in this embodiment includes an identification system and a housing 1. A tray 3 is provided on the upper end of the housing 1, and a protective cover 2 is provided on the upper end of the outside of the tray 3. A sand bottle 17 is placed inside the protective cover 2. The sand bottle 17 is located on the upper end of the tray 3. After the sand bottle 17 is placed on the upper end of the tray 3, the outside of the sand bottle 17 is wrapped and protected by the protective cover 2 during the sandblasting process.

[0037] The tray 3 is fixedly connected to the outer shell 1 by bolts. The bolts facilitate disassembly and inspection and cleaning of the internal structure of the outer shell 1.

[0038] The lower end of the tray 3 is provided with a sheet-like protective ring 5. The protective ring 5 is welded and fixed to the tray 3 by a connecting rod 6. The connecting rod 6 supports the protective ring 5, so that the area between the protective ring 5 and the tray 3 can accommodate the transmission frame 9, which can facilitate the clamping of the sand bottle 17 and fix the sand bottle 17 during the sandblasting process.

[0039] A first connecting end 7 is provided at the middle position of the lower end of the sand bottle 17, and a second connecting end 8 is provided on one side of the first connecting end 7. The first connecting end 7 corresponds to the air inlet for transmitting sandblasting gas, and the second connecting end 8 corresponds to the air outlet for transmitting sandblasting gas. Gas enters the sand bottle 17 from the first connecting end 7, driving the sand stored inside the sand bottle 17 to be discharged from the second connecting end 8, thereby realizing sandblasting. Correspondingly, fixing the outer walls of the first connecting end 7 and the second connecting end 8 can complete the fixation of the sand bottle 17, which can further realize stable sandblasting of the sand bottle 17.

[0040] In order to clamp the first connecting end 7 and the second connecting end 8, a transmission frame 9 is provided between the protective ring 5 and the tray 3, and the transmission frame 9 is welded and fixed to the outer shell 1. Two bidirectional threaded rods 13 are arranged laterally on both sides inside the transmission frame 9. The two ends of the two bidirectional threaded rods 13 are rotatably connected to the transmission frame 9 respectively, and the rotation of the two bidirectional threaded rods 13 corresponds to the clamping of the first connecting end 7 and the second connecting end 8 respectively.

[0041] It is worth mentioning that, in order to accommodate sand bottles 17 of different diameters and to accommodate the thickness of the first connecting end 7 and the second connecting end 8 corresponding to sand bottles 17 of different diameters, clamping plates 12 are provided on both sides of the two bidirectional threaded rods 13. The bidirectional threaded rods 13 pass through the clamping plates 12 on both sides. The upper end of the clamping plate 12 is attached to the outer shell 1. The through position of the clamping plate 12 is engaged with the external thread of the bidirectional threaded rod 13. Through the thread engagement, the bidirectional threaded rod 13 can generate relative movement with the through position of the clamping plate 12 when rotating. By being attached to the outer shell 1, the clamping plate 12 can change from rotational movement to lateral movement. The opposite threads on the outer wall of the bidirectional threaded rod 13 allow the two clamping plates 12 to move relative to each other, thereby clamping and fixing the first connecting end 7 and the second connecting end 8.

[0042] To avoid damage to the first connecting end 7 and the second connecting end 8 due to excessive clamping, a pressure sensor 11 is provided on one side of a pair of clamping plates 12 on the outside of the bidirectional threaded rod 13. During the lateral movement of the clamping plate 12, the clamping plate 12 can drive the pressure sensor 11 to move laterally. When the pressure sensor 11 is attached to the outer wall of the corresponding first connecting end 7 and the second connecting end 8 to achieve clamping, the clamping strength is directly detected by the pressure sensor 11, which can avoid damage to the first connecting end 7 and the second connecting end 8 due to excessive pressure.

[0043] A motor 10 is installed at one end of each of the two bidirectional threaded rods 13, and the output shaft of the motor 10 is fixedly connected to one end of the bidirectional threaded rod 13. The outer wall of the motor 10 is fixedly connected to the transmission frame 9 by bolts. The motor 10 can directly output to the connected bidirectional threaded rod 13 by being installed on the side of the transmission frame 9, thereby clamping and fixing the positions of the first connecting end 7 and the second connecting end 8, and indirectly fixing the sand bottle 17.

[0044] In this embodiment, as Figure 5 As shown, the pressure sensor 11 is electrically connected to the corresponding motor 10. The two motors 10 correspond to the two pressure sensors 11 respectively, and can be adapted to the diameter of the first connection end 7 and the second connection end 8 respectively, further improving the adaptability and the stability of clamping and fixing.

[0045] like Figure 3 and Figure 4As shown, in order to determine the required sandblasting intensity of sand bottle 17 based on the position of magnet 15 at the lower end of sand bottle 17, the sandblasting intensity of sand bottle 17 can be directly adjusted when sand bottles 17 with different magnet 15 positions are placed. A bracket 14 is provided on the side of the lower end of sand bottle 17 facing tray 3. The bracket 14 is located on one side of the center position of the lower end of sand bottle 17. A magnet 15 is provided at the lower end of the bracket 14, and the magnet 15 is fixed to the inside of the bracket 14 with glue. The magnet 15 and the bracket 14 are fixed off the center position, so that the bracket 14 and magnet 15 installed in different positions around the center of sand bottle 17 can be used as a judgment mark. The first connecting end 7 and the second connecting end 8 at the lower end of sand bottle 17 are fixed in the insertion position. The fixed insertion position of the first connecting end 7 and the second connecting end 8, together with the bracket 14 and magnet 15 distributed in different positions around it, can serve as a detection basis for adjusting different sandblasting intensities.

[0046] When detecting the position of magnet 15, a magnetic induction sensor 16 is arranged inside the tray 3 around the center of the tray 3. The magnetic induction sensor 16 corresponds to the position of the upper magnet 15. When magnet 15 is placed on the upper end of the tray 3 along with sand bottle 17, the upper magnet 15 is detected by the lower magnetic induction sensor 16. Multiple magnetic induction sensors 16 distributed around the tray detect simultaneously. The set sandblasting intensity is determined by which magnetic induction sensor 16 detects the magnet 15, thus completing automatic identification.

[0047] To assist in the use of the identification system and the operation and use of the equipment, a display screen 4 is provided at one end of the housing 1, through which the operating status of the identification system can be displayed.

[0048] like Figure 6 As shown, the identification system consists of a magnetic induction identification module, a data processing circuit, a fixing module, a sandblasting execution module, a display module, and a stop module. In this embodiment, the magnetic induction identification module is built into the magnetic induction sensor 16. The magnetic induction identification module is used to detect the presence of the magnet 15 at the bottom of the sand bottle 17 and to identify the magnetic induction signal. At the same time, the magnetic induction identification module is also used to detect the position of the magnet 15 at the bottom of the sand bottle 17, which is used as a prerequisite for the fixing module to start. It can convert the magnetic signal into an electrical signal and transmit it to the data processing circuit as a basis for identifying the type of sand bottle 17.

[0049] Each magnet with 15 positions corresponds to a sandblasting intensity, adapting to different sandblasting environments. It can meet the sandblasting needs of supragingival and subgingival areas and is the core of achieving automated management.

[0050] The magnet 15 is detected by the built-in magnetic induction recognition module of the magnetic induction sensor 16. It is a non-contact recognition method with the advantages of no mechanical wear, long life and strong anti-interference ability.

[0051] This fundamentally avoids operational errors caused by identical sandblasting bottles, improving the accuracy and safety of treatment.

[0052] The data processing circuit is responsible for scheduling and decision-making. It includes an overall circuit system for signal reception, processing, judgment, and output of control commands, and coordinates the data flow and control flow between the magnetic induction recognition module, display module, fixing module, and sandblasting execution module.

[0053] The data processing circuit consists of a magnetic induction receiving circuit board and an MCU microprocessor circuit. The magnetic induction receiving circuit board, as the front-end acquisition board, integrates conditioning circuits for multiple Hall elements. It is responsible for amplifying and filtering the weak magnetic induction signal and converting it into a digital signal that can be directly read by the MCU microprocessor circuit, simplifying the circuit design of the main MCU and improving the signal anti-interference capability and recognition reliability.

[0054] The magnetic induction receiving circuit board features a modular design, which facilitates production and maintenance.

[0055] The MCU microprocessor circuit serves as the core processor, scheduling each module according to a preset logical order. It is used to interpret the digital signals transmitted from the magnetic induction receiving circuit board, query the database corresponding to the digital signals in the power recording module, determine the corresponding sandblasting power, and send the determined sandblasting power command to the power setting module in the sandblasting execution module, thus realizing the intelligent and automated collaborative work of the entire identification system.

[0056] The fixing module is the execution unit for the mechanical action of the clamp 12. It is used to drive the clamp 12 to clamp the first connecting end 7 and the second connecting end 8, which facilitates the fixing of the sand bottle 17. It is also the key to continuously detect the magnet 15 and assist the stable operation of the identification system. It prevents the sand bottle 17 from being loose and affecting the detection magnet 15, and prevents the system from not operating efficiently due to the loose position of the magnet 15.

[0057] The fixing module consists of a drive module, a pressure sensing unit, and a status indication unit. The drive module is used to receive instructions from the MCU microprocessor circuit. After the MCU microprocessor circuit receives the magnetic induction signal emitted by the magnetic induction receiving circuit board, it can determine that a sand bottle 17 is placed at the upper end and can clamp it without the user having to manually control the clamping. The drive module can directly drive the motor 10 corresponding to the bidirectional threaded rod 13, and it is also convenient to drive the motor 10 to stop driving the bidirectional threaded rod 13. It can also stop clamping the first connecting end 7 and the second connecting end 8 at the lower end of the sand bottle 17 when it is necessary to disassemble the sand bottle 17.

[0058] The pressure sensing unit is built into the pressure sensor 11, which converts the pressure signal into a continuous voltage signal. This signal can be read and received by the MCU microprocessor circuit, which can then give the drive module a circuit instruction to stop. Based on the pressure set by the pressure sensing unit, closed-loop control is achieved, ensuring that the clamping force of the clamping plate 12 is stable each time. It is neither too loose, causing the sand bottle 17 to shake, nor too tight, pressing the first connection end 7 and the second connection end 8 at the lower end of the sand bottle 17. This greatly improves the reliability and safety of the equipment, and also enhances the safety and smoothness of the entire identification system.

[0059] It is worth mentioning that the pressure sensor contacts the sand bottle before the transmission structure, allowing for real-time monitoring of the clamping force.

[0060] The status indicator unit receives instructions from the MCU microprocessor circuit and graphically displays the current status instructions in a specific area of ​​the display screen 4, providing real-time feedback for human-computer interaction.

[0061] The status indicator unit is used to display the operating status of the fixing module in real time, showing the clamping status and whether clamping is complete or in progress.

[0062] The operation of the status display unit and the display at position 4 on the screen allow the operator to clearly understand the status of the equipment, making it convenient for users to operate.

[0063] The sandblasting execution module consists of a power setting module, a power recording module, a manual adjustment module, a sandblasting pump execution module, and a safety protection module. The power setting module receives instructions from the MCU microprocessor circuit, queries the power recording module to determine the preset initial power value according to the instructions, and sets the voltage and current of the sandblasting pump motor based on the preset initial power value. The power recording module is used to store data and record the preset initial power value corresponding to each digital signal. The manual adjustment module is integrated into the display screen to allow users to fine-tune the power. The sandblasting pump execution module is used to execute the sandblasting operation according to the power set by the power setting module. The safety protection module monitors the current and temperature of the sandblasting pump and dynamically adjusts the motor power of the sandblasting pump.

[0064] The stop module is used when replacing the sand bottle 17. It is a UI button displayed on the display screen 4. The drive fixing module gives the motor 10 a start signal, so that the motor 10 can drive the clamp 12 to release the clamping first connection end 7 and second connection end 8.

[0065] The stop module ensures that the sand bottle 17 can be quickly and safely removed under any circumstances, which is an integral part of the safety design of identification systems and equipment.

[0066] The display module is built into the display screen 4. It is used to display images, allow manual modification by the module, and display data monitored by the safety protection module. It also provides a touch area for the stop module to display UI buttons.

[0067] Display 4 provides an intuitive and centralized interactive window, which greatly simplifies the operation process and reduces the learning cost.

[0068] Working Principle: During sandblasting, the power recording module stores data, recording the preset initial power value, modification history, and number of uses for each digital signal. The manual modification module allows users to set their own power and make fine adjustments. The sand bottle 17 is installed on the upper end of the tray 3. The first connecting end 7, the second connecting end 8, and the magnet 15 move together toward the tray 3. The magnetic induction sensor 16 detects the position and presence of the upper magnet 15 and identifies the magnetic induction signal. The magnetic induction receiving circuit board amplifies and filters the weak magnetic induction signal and converts it into a digital signal that can be directly read by the MCU microprocessor circuit. The MCU microprocessor circuit interprets the digital signal transmitted from the magnetic induction receiving circuit board to determine the corresponding sandblasting power. The determined sandblasting power command is sent to the power setting module in the sandblasting execution module. During this process, the fixing module is used to receive the command from the MCU microprocessor circuit. After receiving the magnetic induction signal from the magnetic induction receiving circuit board, the MCU microprocessor circuit can determine that a sand bottle 17 is placed at the upper end. The drive module can directly drive the motor 10 corresponding to the bidirectional threaded rod 13, and it is also convenient to drive the motor 10 to stop driving the bidirectional threaded rod 13, so as to realize the clamping of the clamping plate 12. After clamping, the power setting module receives the command from the MCU microprocessor circuit. The power setting module converts the logic command of the MCU microprocessor circuit into the actual physical power output. The sandblasting pump execution module is used to execute the sandblasting operation according to the power set by the power setting module. After identifying the presence and position of the magnet 15, sandblasting is performed.

[0069] Preferably, the safety protection module monitors the current and temperature of the sandblasting pump. When the current and temperature of the sandblasting pump exceed the preset range, it dynamically adjusts the motor power of the sandblasting pump, including:

[0070] Based on the time axis, the real-time current of the sandblasting pump motor and the real-time temperature of the sandblasting pump body are obtained, and the temperature change of the sandblasting pump body within a unit time is monitored; and the current change of the sandblasting pump motor within a unit time is monitored.

[0071] If the temperature change exceeds the first threshold, or the current change exceeds the second threshold, or both the temperature and current changes exceed the corresponding thresholds, then a safety hazard is identified, and the motor power of the current sandblasting pump needs to be dynamically adjusted.

[0072] The safety protection module calculates the adjustment coefficient of the sand pump motor power by acquiring the real-time current of the sand blasting pump motor and the real-time temperature of the sand blasting pump body at the current moment.

[0073] Based on the adjustment coefficient, and combined with the maximum allowable power of the sandblasting pump motor, the pulse value of the sandblasting pump, and the optimal operating temperature of the sandblasting pump body, the power of the sandblasting pump is dynamically adjusted to obtain the target power of the sandblasting pump motor.

[0074] The principle and effect of the above technical solution are as follows: In a sandblasting environment, the teeth cleaning process takes about one hour. If there are excessive changes in current or significant temperature fluctuations in the sandblasting pump body (the sandblasting process directly affects the pump body (fluid channel), and abnormal temperatures (such as "cumulative temperature rise of 20℃+ after 10 consecutive operations") mainly stem from heat accumulation in the pump body, the pump body temperature directly affects sandblasting efficiency (such as changes in fluid viscosity) and material safety (such as aging of seals)), it may indicate a safety hazard with the sandblasting pump. Dynamic adjustments via a safety protection module are necessary to ensure operation within a safe range. This safety monitoring improves the safety of the teeth cleaning process and avoids unpredictable damage to the patient's oral cavity or teeth. This dynamic, automated adjustment solves the problem of untimely manual adjustments or failure to notice safety hazards, enabling intelligent self-adjustment and improving both safety and flexibility.

[0075] Specifically, the security protection module includes:

[0076] The calculation submodule is used to monitor the current and temperature of the sandblasting pump motor and calculate the adjustment coefficient of the sandblasting pump motor power based on the current and temperature monitoring data.

[0077]

[0078] Where W1 represents the adjustment coefficient of the sandblasting pump motor power; k I Indicates current weight; k T Indicates temperature weight; k I +k T =1 and k I k T Greater than 0; ΔI 安全 This indicates the maximum allowable deviation of the current in the sandblasting pump motor; ΔT 安全 Indicates the maximum permissible temperature deviation within the sandblasting pump body; I 实测 Indicates the real-time current of the sandblasting pump motor; I 额定 This indicates the rated current of the sandblasting pump motor; T 泵 This indicates the real-time temperature of the sandblasting pump body; T 正常 The optimal operating temperature of the sandblasting pump body;

[0079] A dynamic adjustment submodule is used to dynamically adjust the power of the sandblasting pump using the adjustment coefficient.

[0080]

[0081] Where P1 represents the target power of the sandblasting pump motor; P max Indicates the maximum permissible power of the sandblasting pump motor; N burst N represents the number of continuous sandblasting pulses of the sandblasting pump; N0 represents the safe pulse threshold of the sandblasting pump; β represents the pulse attenuation coefficient; γ represents the pulse attenuation exponent; η represents the thermal inertia compensation coefficient; T 泵 This indicates the real-time pump body temperature of the sandblasting pump; T 环境 Indicates ambient temperature; τ 热 S represents the thermal time constant of the sandblasting pump body. 监测 Indicates the real-time monitoring period; T 安全 This indicates the maximum permissible temperature rise of the sandblasting pump body from ambient temperature to the safe upper limit.

[0082] In this embodiment, Indicates the pulse attenuation term; This indicates the thermal compensation term.

[0083] In this embodiment, the real-time status monitoring of the sandblasting pump is based on the safety factor calculated by the current / temperature deviation; the operation behavior of the sandblasting pump is predicted by the prediction of the heat accumulation risk through the number of continuous sandblasting pulses; the thermal inertia is predicted by compensating for the temperature response lag using the thermal time constant of the pump body; and precise power regulation is achieved through triple coupling control.

[0084] For example, in the following scenarios:

[0085] Parameter setting P max =500w; I 额定 =2.5A; ΔI 安全 =0.5A; T 正常 =40℃; ΔT 安全 =10℃; γ=1.2; τ 热 =120s; η = 0.8; N0 = 8; S 监测 =0.1s;

[0086] Scenario 1: The dentist is performing routine cleaning at a slow pace;

[0087] I 实测 =2.5A; T 泵 =40℃; N burst =3; T 环境 =25℃;

[0088] Calculation process: W1 = 1.0; Pulse attenuation term: 0.91; Thermal compensation term: 0.99967; P1 = 454.4W; Maintaining high power output: 454.4W, ensuring cleaning efficiency, slight derating is reasonable: due to the existence of environmental temperature difference, the compensation term is slightly less than 1, which is in line with thermodynamic principles; Clinical significance: the dentist's operation feels smooth, with no perceived power fluctuations.

[0089] Scenario 2: Single temperature anomaly, poor heat dissipation of the equipment causes the temperature to rise slowly;

[0090] I 实测 =2.5A; T 泵 =48℃; N burst =3; T 环境 =25℃;

[0091] Calculation process: W1 = 0.68; Pulse attenuation term: 0.619; Thermal compensation term: 0.99949; P1 = 309.2W; Reasonable power reduction: from 454W to 309W, matching the over-limit temperature ratio, dual protection mechanism: W1 directly responds to temperature anomalies, and the thermal compensation term is finely adjusted to reflect the current thermal risk; Clinical significance: The equipment automatically operates at reduced capacity to avoid overheating shutdown (in traditional solutions, protection shutdown would have been triggered at this point).

[0092] Scenario 3: Dentists perform complex root canal treatments, requiring short-term, high-frequency sandblasting (8-10 times per second); Industry pain point: Traditional systems only monitor real-time temperature, but the temperature rise of a single sandblasting (<0.5s) is only 2-3℃, and the cumulative temperature rise after 10 consecutive operations reaches 20℃+, leading to thermal runaway.

[0093] I 实测 =2.5A; T 泵 =42℃; N burst =10; T 环境 =25℃;

[0094] Calculation process: W1 = 0.92; Pulse attenuation term: 0.673; Thermal compensation term: 0.99962; P1 = 336.2W; Compared with the traditional system, this scheme has an advanced early warning mechanism; Traditional system: only relies on T 泵 =42℃, maintaining high power → thermal accumulation runaway; This solution: through N burst >N0 is reduced in advance, and the pulse attenuation term is reduced; this avoids interruption of treatment and reduces the equipment overheating failure rate.

[0095] The working principle and beneficial effects of the above technical solution are as follows: real-time monitoring of the current and temperature of the sandblasting pump; current and temperature are important indicators reflecting the operating status of the sandblasting pump, and abnormal current or temperature may indicate equipment failure or potential risks; by continuously monitoring these parameters, abnormal conditions of the equipment can be detected in a timely manner, avoiding more serious safety accidents caused by equipment failure; the power of the sandblasting pump is dynamically adjusted according to the adjustment coefficient and other factors, and the power of the sandblasting pump is dynamically adjusted according to the specific conditions of the usage environment under different working scenarios, so as to achieve efficient operation and safety protection of the sandblasting pump.

[0096] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0097] 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 alterations 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. An automatic identification system for sandblasting bottles in a dental sandblasting machine, characterized in that, The system comprises an identification system consisting of a magnetic induction identification module, a data processing circuit, a fixing module, a sandblasting execution module, a display module, and a stop module, and a housing (1) with a tray (3) on its upper end. A sand bottle (17) with a support (14) is mounted on the upper end of the tray (3), and a magnet (15) is mounted on the lower end of the support (14). The magnetic induction identification module detects the presence and position of the magnet (15) at the lower end of the sand bottle (17). The position of each magnet (15) corresponds to a sandblasting intensity. The magnetic induction signal is identified by the magnetic induction identification module. The data processing circuit consists of a magnetic induction receiving circuit board and an MCU microprocessor circuit. The magnetic induction receiving circuit board converts the magnetic induction signal into a digital signal that is directly read by the MCU microprocessor circuit. The MCU microprocessor circuit interprets the magnetic induction signal. The induction receiving circuit board receives digital signals and corresponds them to sandblasting power, then sends the determined sandblasting power command to the sandblasting execution module. The data processing circuit coordinates the data flow between the magnetic induction identification module, display module, fixing module, and sandblasting execution module. The sandblasting execution module consists of a power setting module, a power recording module, a manual modification module, a sandblasting pump execution module, and a safety protection module. The safety protection module monitors the sandblasting pump current and temperature. When the sandblasting pump current and temperature exceed the preset range, it dynamically adjusts the motor power of the sandblasting pump, including: acquiring the real-time current of the sandblasting pump motor and the real-time temperature of the sandblasting pump body according to the time axis, and monitoring the temperature change of the sandblasting pump body within a unit time; and monitoring the current change of the sandblasting pump motor within a unit time. When the temperature change exceeds the first change threshold, or the current change exceeds the second change threshold, or both the temperature change and the current change exceed the corresponding change threshold, it is determined that the motor power of the current sandblasting pump needs to be dynamically adjusted. The safety protection module calculates the adjustment coefficient of the sand pump motor power by acquiring the real-time current of the sand blasting pump motor and the real-time temperature of the sand blasting pump body at the current moment. Based on the adjustment coefficient, and combined with the maximum allowable power of the sandblasting pump motor, the pulse value of the sandblasting pump, and the optimal operating temperature of the sandblasting pump body, the power of the sandblasting pump is dynamically adjusted to obtain the target power of the sandblasting pump motor. The security protection module includes: The calculation submodule is used to monitor the current and temperature of the sandblasting pump motor and calculate the adjustment coefficient of the sandblasting pump motor power based on the current and temperature monitoring data. in, The adjustment coefficient indicating the power of the sandblasting pump motor; Indicates current weight; Indicates temperature weighting; + =1 and , Greater than 0; This indicates the maximum allowable deviation of the current in the sandblasting pump motor; This indicates the maximum permissible temperature deviation within the sandblasting pump body; This indicates the real-time current of the sandblasting pump motor; This indicates the rated current of the sandblasting pump motor; This indicates the real-time temperature of the sandblasting pump body; The optimal operating temperature of the sandblasting pump body; A dynamic adjustment submodule is used to dynamically adjust the power of the sandblasting pump using the adjustment coefficient. in, Indicates the target power of the sandblasting pump motor; This indicates the maximum permissible power of the sandblasting pump motor; This indicates the number of consecutive sandblasting pulses from the sandblasting pump; Indicates the safety pulse threshold of the sandblasting pump; Indicates the pulse attenuation coefficient; Indicates the pulse decay index; Indicates the thermal inertia compensation coefficient; This indicates the real-time pump body temperature of the sandblasting pump; Indicates ambient temperature; This represents the thermal time constant of the sandblasting pump body; Indicates the real-time monitoring period; This indicates the maximum permissible temperature rise of the sandblasting pump body from ambient temperature to the safe upper limit.

2. The automatic identification system for sandblasting bottles in a dental sandblasting machine according to claim 1, characterized in that: The power setting module receives instructions from the MCU microprocessor circuit, queries the power recording module to determine the preset initial power value according to the instructions, and sets the voltage and current of the sandblasting pump motor based on the preset initial power value. The power recording module is used to store data and record the preset initial power value corresponding to each digital signal. The manual modification module is integrated into the display screen to allow users to fine-tune the power. The sandblasting pump execution module is used to execute the sandblasting operation according to the power set by the power setting module. The safety protection module monitors the current and temperature of the sandblasting pump motor. When the current and temperature of the sandblasting pump motor exceed the preset range, the power of the sandblasting pump motor is dynamically adjusted.

3. The automatic identification system for sandblasting bottles in a dental sandblasting machine according to claim 2, characterized in that: A magnetic induction sensor (16) is arranged inside the tray (3) around the center of the tray (3). The magnetic induction recognition module is built into the magnetic induction sensor (16). The bracket (14) is located on one side of the center of the lower end of the sand bottle (17). A sheet-like protective ring (5) is arranged at the lower end of the tray (3). A transmission frame (9) is welded and fixed to the outer shell (1) between the protective ring (5) and the tray (3). Two-way threaded rods (13) are arranged laterally on both sides inside the transmission frame (9).

4. The automatic identification system for sandblasting bottles in a dental sandblasting machine according to claim 3, characterized in that: Both sides of the two bidirectional threaded rods (13) are provided with clamps (12), and the bidirectional threaded rods (13) pass through the clamps (12) on both sides. The upper end of the clamps (12) is attached to the outer shell (1), and the through position of the clamps (12) is engaged with the external thread of the bidirectional threaded rods (13).

5. The automatic identification system for sandblasting bottles in a dental sandblasting machine according to claim 4, characterized in that: A pressure sensor (11) is provided on the side of the clip (12).

6. The automatic identification system for sandblasting bottles in a dental sandblasting machine according to claim 5, characterized in that: One end of each of the two bidirectional threaded rods (13) is provided with a motor (10), the outer wall of the motor (10) is fixedly connected to the transmission frame (9) by bolts, and the pressure sensor (11) is electrically connected to the corresponding motor (10).

7. The automatic identification system for sandblasting bottles in a dental sandblasting machine according to claim 6, characterized in that: One end of the outer shell (1) is provided with a display screen (4). The display module is built into the display screen (4) and is used to display the image. The fixing module is used to drive the clamp (12) to clamp the first connection end (7) and the second connection end (8). The fixing module consists of a drive module, a pressure sensing unit and a status indicator unit. The drive module is used to receive instructions from the MCU microprocessor circuit. The pressure sensing unit is built into the pressure sensor (11) and converts the pressure signal into a continuous voltage signal that is read and received by the MCU microprocessor circuit. The status indicator unit receives instructions from the MCU microprocessor circuit and displays the current status instructions on the display screen (4).

8. The automatic identification system for sandblasting bottles in a dental sandblasting machine according to claim 7, characterized in that: The stop module is used when replacing the sand bottle (17). It provides a start signal to the motor (10) through the fixing module, so that the motor (10) can drive the clamp (12) to release the clamping first connection end (7) and second connection end (8).

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