Multi-mode intelligent control method and system of dental chair waterway cleaning and disinfecting equipment

Abstract

This invention discloses a multi-mode intelligent control method and system for dental chair water system cleaning and disinfection equipment, belonging to the field of medical device automatic control technology. The method collects multi-source signals in real time, including the status of the dental chair foot pedal, instrument tray, and water pressure, flow rate, and liquid level. After fusion analysis, it automatically determines the current operating condition: standby, treatment, cleaning triggered, or disinfection triggered. When the triggering conditions are met, the control unit automatically switches to the corresponding mode, generating collaborative drive commands to sequentially execute modular processes including rinsing, cleaning, disinfection, rinsing, and draining. In the cleaning mode, a venturi tube is used to accelerate airflow and enhance the rinsing effect, and a flexible brush mechanism is introduced to remove biofilm. This invention achieves full automation, intelligence, and precision in dental chair water system cleaning and disinfection, significantly improving cleaning effectiveness, equipment safety, and management efficiency.

Description

Technical Field

[0001] This invention patent relates to the field of automatic control of medical devices, specifically to a multi-mode intelligent control method and system for a dental chair waterway cleaning and disinfection device. Background Technology

[0002] The dental chair (hereinafter referred to as "dental chair") is a core piece of equipment in oral treatment. Its water system comes into direct contact with the patient's mouth, requiring extremely high hygiene and safety standards. Long-term use of the dental chair's water system can easily lead to the growth of biofilm and the accumulation of impurities, becoming a potential source of cross-infection. Currently, the cleaning and disinfection of the dental chair's water system mainly relies on manual operation by medical staff, which has the following technical shortcomings: The cleaning and disinfection process requires manual initiation and lacks an automatic triggering mechanism based on the actual usage status of the dental chair. This makes it easy for human negligence to lead to untimely or incomplete cleaning and disinfection. Simple timer or relay control is often used, resulting in fixed cleaning modes. It is impossible to automatically switch to appropriate cleaning and enhanced disinfection modes based on different levels of contamination, such as post-treatment residue, biofilm formation, or pipe blockage, leading to low cleaning efficiency. The subsystems in the water circuit, such as the foot pedal, instrument tray, and mouthwash circuit, operate independently. The control unit cannot integrate and judge based on multiple signal sources and coordinate the work of actuators such as solenoid valves, pumps, and disinfection devices. It is impossible to monitor key parameters such as pressure difference, disinfectant concentration, and residual liquid volume in real time during the cleaning and disinfection process. It lacks fault warning and remote management functions, resulting in poor equipment operation safety and maintainability.

[0003] Therefore, there is an urgent need for a method and system for controlling the water system of dental chairs for cleaning and disinfection that can automatically identify working conditions, intelligently switch modes, coordinately control actuators, and achieve full-process monitoring. Summary of the Invention

[0004] In view of this, the present invention proposes a multi-mode intelligent control method for a dental chair waterway cleaning and disinfection device.

[0005] On one hand, this invention proposes a multi-mode intelligent control method for a dental chair water circuit cleaning and disinfection device, including the following steps: S100: Real-time acquisition of dental chair foot pedal status, instrument tray working signal, and pressure, flow rate, and liquid level parameters of the mouthwash water circuit; S200: Based on the multi-signal fusion analysis, determine whether the dental chair is currently in standby mode, treatment mode, cleaning triggered mode, or disinfection triggered mode; S300: When the cleaning or disinfection triggered mode is determined, activate the cleaning or disinfection mode and automatically switch to the corresponding control mode; otherwise, maintain standby mode; S400: The control unit generates coordinated drive commands for multiple solenoid valves and pumps to execute the water circuit cleaning and disinfection process; S500: Upload system operating parameters and fault information in real time through a remote communication module, supporting remote management and abnormal alarms.

[0006] Furthermore, the real-time acquisition in step S100 specifically includes: acquiring the inlet and outlet water pressure of the mouthwash water circuit through a pressure sensor; acquiring the instantaneous flow rate and cumulative flow rate of the pipeline through a flow sensor; acquiring the remaining liquid level of the cleaning solution tank and disinfectant tank through a liquid level sensor; and acquiring the foot pedal start / stop signal and the instrument tray extension / retraction status signal through a limit switch.

[0007] Furthermore, the operating condition determination logic in step S200 is as follows: the diagnosis and treatment operating condition is determined when the foot pedal is triggered and the instrument plate extends, and the flow rate is within the preset diagnosis and treatment threshold range; the cleaning operating condition is determined when the treatment ends after a preset delay time, or the flow rate is lower than the minimum flow threshold, or the pressure difference exceeds the anti-blockage threshold; the disinfection operating condition is determined before the first start of the day, or when the cumulative number of treatments reaches a preset value, or when the user actively initiates the process through a remote terminal.

[0008] Furthermore, the cleaning mode described in step S300 specifically includes: the control unit starts the cleaning pump, opens the inlet solenoid valve and the loop solenoid valve, so that the cleaning fluid circulates along the mouthwash water path of the dental chair and the instrument tubing, and at the same time starts the tubing pre-rinsing program to discharge residual sewage in the tubing. After the pre-rinsing is completed, the circulation cleaning is maintained for a preset time.

[0009] Furthermore, the disinfection process described in step S400 specifically includes: starting the disinfection unit, selectively turning on the ultraviolet sterilizer or the disinfectant metering pump, mixing the disinfectant and cleaning solution according to a preset ratio and then introducing them into the water circuit, maintaining the disinfection cycle for a preset time, performing a rinsing procedure after disinfection is completed, draining the residual disinfectant solution, and ensuring that there is no disinfectant residue in the pipeline.

[0010] Furthermore, steps S300 to S400 also include a cleaning mode, which is automatically triggered when the pipeline pressure difference exceeds a preset threshold. Compressed air is introduced into the water circuit through the air inlet pipe. The air inlet pipe has a built-in Venturi tube structure to accelerate the air flow rate to enhance the backwash effect. At the same time, the solenoid valve is controlled to switch in reverse so that the water flow is reversed to peel off impurities attached to the inner wall of the pipeline.

[0011] Furthermore, the collaborative drive described in step S400 also includes anti-clogging control: during the cleaning process, the built-in elastic brush rotation mechanism and rotating cleaning nozzle are activated, the brush moves back and forth along the inner wall of the pipeline, and the nozzle sprays cleaning fluid 360° to simultaneously remove biofilm and deposits from the inner wall and dead corners of the pipeline.

[0012] Furthermore, step S400 also includes odor prevention and residue control: at the end of the cleaning and disinfection process, a vacuum pump is started to discharge the residual liquid in the pipeline, and the discharged gas is treated by an activated carbon filter unit to prevent odor leakage, while controlling the amount of residual liquid to be below a preset threshold.

[0013] Furthermore, step S500 also includes parameter closed-loop adjustment: the control unit dynamically adjusts the opening degree of the solenoid valve and the pump speed according to the real-time collected pressure and flow parameters, so that the water circuit parameters are maintained within the preset optimal range; when the liquid level is too low, the pressure is abnormal, or the pump valve is faulty, the corresponding process is stopped immediately and an alarm message is sent to the remote terminal.

[0014] On the other hand, this application also provides a multi-mode intelligent control system for a dental chair waterway cleaning and disinfection device, including the following modules: a dental chair frame, wherein the dental chair frame includes: a body position adjustment module, which can be switched to a sitting mode, a treatment mode, and an emergency mode, the body position adjustment module including a drive unit, which can adjust the height, tilt angle, and armrest support parameters of the device; an auxiliary function module, including a storage section, an adjustable height auxiliary table, and a non-slip seat surface; an intelligent control module, electrically connected to the body position adjustment module, with built-in working condition judgment logic, which can automatically switch modes according to the treatment process stage or emergency state, and is equipped with a control terminal and a status notification unit to realize one-click mode switching, process timing, and voice prompts; a signal acquisition module, including a pressure sensor, a flow sensor, and a signal acquisition module. The system includes: a volume sensor, a level sensor, and limit switches for collecting signals related to the dental chair's water circuit and operating status; a control unit with a built-in PLC controller for signal fusion analysis, condition determination, mode switching, and drive command generation, supporting parameter presets and logic programming; an execution module comprising a cleaning pump, a disinfection pump, a compressed air tank, a multi-way solenoid valve, an air inlet pipe, an ultraviolet sterilizer, an activated carbon filter unit, a pipe brush mechanism, and rotating cleaning nozzles for performing cleaning and disinfection actions; a remote communication module supporting wireless or wired communication for uploading system status, receiving remote control commands, and issuing alarms; and a storage and display module for storing operating logs, fault records, and parameter configurations, equipped with a local display panel to show the current mode and parameters in real time.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By integrating multiple signals and automatically determining operating conditions, the entire closed-loop automatic control of the cleaning and disinfection process—from perception to decision-making to execution—is realized, completely eliminating reliance on manual operation and avoiding potential hygiene and safety hazards caused by negligence. 2. It can automatically trigger and switch to the most suitable cleaning and disinfection mode based on the degree of pipeline contamination, such as pressure difference indicating blockage, usage frequency, or the first start time of the day, to achieve precise treatment and optimize resource consumption while ensuring effectiveness; 3. The control unit can coordinate multiple solenoid valves, pumps, disinfection units, pneumatic devices, and other actuators to work in a precise timing sequence, forming a highly efficient and unified control strategy. In particular, the introduction of a Venturi tube structure and airflow assistance in the cleaning mode significantly improves the physical cleaning capability for complex pipelines; 4. By integrating multiple active protection mechanisms such as anti-clogging, anti-odor, anti-leakage and residue control, it can effectively solve the difficult problems in the maintenance of traditional dental chair water circuits and improve the long-term reliability and hygiene safety of the system. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A flowchart of a multi-mode intelligent control method for a dental chair waterway cleaning and disinfection device provided in an embodiment of the present invention; Figure 2 A block diagram of the multi-mode intelligent control system for the dental chair waterway cleaning and disinfection equipment provided in an embodiment of the present invention; Figure 3 A detailed structural diagram of the multi-mode intelligent control system for the dental chair waterway cleaning and disinfection equipment provided in this embodiment of the invention; Figure 4 A detailed structural diagram of the dental chair frame of the dental chair waterway cleaning and disinfection equipment provided in this embodiment of the invention; In the attached diagram: 01 - Water inlet solenoid valve; 02 - Particulate discharge pipe; 03 - Small sediment discharge pipe; 04 - Vacuum suction pump; 05 - Loop solenoid valve; 06 - Air inlet pipe; 07 - Filter unit; 08 - Rotary cleaning nozzle; 09 - Activated carbon filter unit; 10 - Headrest; 11 - Backrest; 12 - Support; 13 - Bottom support; 14 - Height adjustment assembly; 15 - Foot support; 16 - Drive unit; 17 - First leg support; 18 - Second leg support; 19 - Auxiliary table. Detailed Implementation

[0017] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey its scope to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features described herein can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] Reference Figure 1As shown in some embodiments of this application, a multi-mode intelligent control method for a dental chair water circuit cleaning and disinfection device includes the following steps: S100: Real-time acquisition of dental chair foot pedal status, instrument tray working signal, and pressure, flow rate, and liquid level parameters of the mouthwash water circuit; S200: Based on the multi-signal fusion analysis, determining whether the dental chair is currently in standby mode, treatment mode, cleaning triggered mode, or disinfection triggered mode; S300: When the cleaning or disinfection triggered mode is determined, the cleaning or disinfection mode is activated, and the corresponding control mode is automatically switched; otherwise, the standby mode is maintained; S400: The control unit generates coordinated drive commands for multiple solenoid valves and pumps to execute the water circuit cleaning and disinfection process; S500: The system operating parameters and fault information are uploaded in real time through a remote communication module, supporting remote management and abnormal alarms.

[0019] The real-time acquisition in step S100 specifically includes: acquiring the inlet and outlet water pressure of the mouthwash water circuit through a pressure sensor; acquiring the instantaneous flow rate and cumulative flow rate of the pipeline through a flow sensor; acquiring the remaining liquid level of the cleaning solution tank and disinfectant tank through a liquid level sensor; and acquiring the foot pedal start / stop signal and the instrument tray extension / retraction status signal through a limit switch.

[0020] Therefore, this method operates in a closed loop, following a process of signal acquisition, condition determination, mode switching, collaborative execution, and remote monitoring. Specifically, the control unit reads signals from various sensors in the signal acquisition module at a specific sampling frequency, achieving accurate data acquisition through calibration and conversion: the pressure sensor obtains the inlet pressure, outlet pressure, and pressure difference; the flow sensor's pulse signal is converted into instantaneous flow rate using a specific coefficient, and the cumulative flow rate is the integral value of the instantaneous flow rate; the level sensor acquires the actual level value, reading the levels of the cleaning solution tank and the disinfectant tank; and the digital signals of the limit switches are directly read to obtain the foot pedal status and instrument tray status. All acquired data is transmitted to the control unit in real time for storage and analysis.

[0021] Meanwhile, the control unit has built-in preset thresholds: treatment flow rate threshold of 5-10 L / min, treatment end delay time of 5 min, minimum flow threshold of 1 L / min, anti-blockage pressure difference threshold of 0.2 MPa, and cumulative treatment count threshold of 20 times. Based on multi-signal fusion analysis, the operating conditions are determined as follows: when the foot pedal is triggered and the instrument tray extends and the instantaneous flow rate is 5 L / min ≤ instantaneous flow rate ≤ 10 L / min, it is determined to be a treatment condition; when the treatment condition ends with a 5 min delay, or the instantaneous flow rate is below 1 L / min for 3 seconds, it is determined to be a cleaning trigger condition; when it is first started between 00:00 and 08:00 every day and disinfection has not been performed, or the cumulative treatment count is ≥20 times, or the user actively initiates it through a remote terminal, it is determined to be a disinfection trigger condition; if any of the above conditions are not met, it is determined to be a standby condition.

[0022] In standby mode, all actuators are powered off, the control unit maintains low power consumption and only continuously collects parameters, and the display panel shows the "standby" status; when the cleaning is triggered, the control unit automatically starts the cleaning mode, and the display panel switches to "cleaning"; when the disinfection is triggered, the control unit starts the disinfection mode, the display panel shows "disinfecting", and the UV sterilizer working indicator light is lit at the same time to ensure that the user can intuitively know the status of the equipment.

[0023] Specifically, the cleaning mode described in step S300 includes: the control unit starts the cleaning pump, opens the inlet solenoid valve 01 and the loop solenoid valve 05, allowing the cleaning solution to circulate along the dental chair's mouthwash water path and instrument tubing, while simultaneously initiating a tubing pre-rinsing procedure to drain residual wastewater from the tubing. After pre-rinsing, the circulation cleaning is maintained for a preset duration. The disinfection process described in step S400 includes: starting the disinfection unit, selectively turning on the ultraviolet sterilizer or the disinfectant metering pump, mixing the disinfectant and cleaning solution according to a preset ratio and then introducing it into the water path, maintaining the disinfection circulation for a preset duration, and performing a rinsing procedure after disinfection to drain residual disinfectant, ensuring that no disinfectant residue remains in the tubing.

[0024] Reference Figure 3 As shown, the cleaning mode described in step S300 specifically includes: starting the cleaning pump, opening the inlet solenoid valve 01 and the loop solenoid valve 05, closing the drain valves of the particle discharge pipe 02 and the small sediment discharge pipe 03, and circulating the cleaning fluid along the dental chair mouthwash water path and instrument tubing at a flow rate of 8L / min. At the same time, the tubing pre-rinsing program is started to discharge the residual sewage in the tubing. The pre-rinsing time is 30s. After the pre-rinsing is completed, the circulation cleaning is maintained for 5min. During this period, if the pressure difference between the inlet and outlet of the filter unit 07 is detected to be greater than the threshold, the drain valve is automatically opened for 3s to discharge the trapped impurities, ensuring smooth cleaning.

[0025] The specific disinfection process is as follows: start the disinfection unit, selectively turn on the ultraviolet sterilizer or the disinfectant metering pump, mix 3% hydrogen peroxide disinfectant and cleaning solution at a preset ratio of 1:50 and then introduce it into the water circuit, maintain the disinfection circulation for 10 minutes, and after disinfection is completed, perform the rinsing procedure to completely drain the residual disinfectant and ensure that there is no disinfectant residue in the pipeline.

[0026] The specific workflow of the cleaning mode is as follows: when the pipeline pressure difference is detected to exceed the preset threshold, it is automatically triggered, the inlet solenoid valve 01 and the loop solenoid valve 05 are closed, the drain valves of the particle discharge pipe 02 and the small sediment discharge pipe 03 are opened, the compressed air tank is introduced into the water circuit through the air inlet pipe 06 at a specific pressure, and the air flow rate is accelerated to 30m / s by the built-in venturi tube structure. At the same time, the solenoid valve is controlled to switch in reverse so that the water flow is reversed, peeling off the impurities attached to the inner wall of the pipeline. After cleaning for 1 minute, the cleaning pump is started to flush for 30 seconds, and then the original mode is switched back.

[0027] The specific workflow for anti-clogging control is as follows: during the cleaning process, the built-in elastic brush rotation mechanism and rotating cleaning nozzle 08 are activated simultaneously. The brush moves back and forth along the inner wall of the pipeline, and the nozzle sprays cleaning fluid 360°. This dual action removes biofilm and deposits from the inner wall and dead corners of the pipeline, thus preventing pipeline blockage.

[0028] The specific workflow for odor prevention and residue control is as follows: at the end of the cleaning and disinfection process, the vacuum suction pump 04 is started to extract the residual liquid in the pipeline for 30 seconds. The residual liquid is discharged through the drain port of the filter unit 07. At the same time, the discharged gas is treated by the activated carbon filter unit 09 to prevent odor leakage. The residual liquid discharge volume is monitored by the flow sensor to ensure that the residual liquid volume is lower than the preset threshold of 5ml.

[0029] Specifically, step S500 also includes parameter closed-loop adjustment: the control unit dynamically adjusts the opening of the solenoid valve and the pump speed according to the real-time collected pressure and flow parameters, so that the water circuit parameters are maintained within the preset optimal range; when the liquid level is too low, the pressure is abnormal, or the pump valve is faulty, the corresponding process is stopped immediately and an alarm message is sent to the remote terminal.

[0030] Therefore, the control unit dynamically adjusts the opening of the solenoid valve and the pump speed based on the real-time collected pressure and flow parameters to maintain the water circuit parameters within the preset optimal range. When a fault is detected, such as the level of the cleaning solution tank or disinfectant tank, or the pump valve not responding, the corresponding process is immediately stopped. An alarm message containing the fault type, fault time, and key parameter data is sent to the remote terminal through the remote communication module, and the fault code is displayed on the display panel. The remote terminal can view the system operating parameters, current mode, and fault records in real time. It supports remotely initiating disinfection commands, modifying preset parameters such as cleaning duration and disinfection interval, and exporting operating logs, thereby realizing remote management and maintenance of the equipment.

[0031] refer to Figure 2 On the other hand, this application also provides a multi-mode intelligent control system for a dental chair waterway cleaning and disinfection device, including the following modules: a dental chair frame, wherein the dental chair frame includes: a body position adjustment module, which can be switched to a sitting mode, a treatment mode, and an emergency mode, the body position adjustment module including a drive unit, which can adjust the height, tilt angle, and armrest support parameters of the device; an auxiliary function module, including a storage section, an adjustable height auxiliary table, and a non-slip seat surface; and an intelligent control module, which is electrically connected to the body position adjustment module, has built-in working condition judgment logic, can automatically switch modes according to the treatment process stage or emergency state, and is equipped with a control terminal and a status notification unit to realize one-click mode switching, process timing, and voice prompts.

[0032] Signal acquisition module: includes pressure sensor, flow sensor, level sensor, and limit switch, used to acquire signals of the dental chair water circuit and operating status; Control unit: built-in PLC controller, used for signal fusion analysis, operating condition determination, mode switching and drive command generation, supporting parameter preset and logic programming; Execution module: includes cleaning pump, disinfection pump, compressed air tank, multi-way solenoid valve, air inlet pipe 06, ultraviolet sterilizer, activated carbon filter unit 09, pipeline brush mechanism and rotating cleaning nozzle 08, used to perform cleaning and disinfection actions; Remote communication module: supports wireless or wired communication, used for system status uploading, remote control command reception and abnormal alarms; Storage and display module: used to store operation logs, fault records and parameter configurations, equipped with a local display panel to display the current mode and parameters in real time.

[0033] refer to Figure 4 As can be seen, the newly added dental chair frame in this embodiment is specifically implemented as follows: The dental chair frame is composed of a headrest 10, a backrest 11, a support 12, a bottom support 13, a height adjustment component 14, a foot support 15, a drive unit 16, a first leg support 17, a second leg support 18, and an auxiliary table 19. It integrates a body position adjustment module, an auxiliary function module, and an intelligent control module. Each module works together to adapt to the needs of the entire diagnosis and treatment process.

[0034] The posture adjustment module, with the drive unit 16 as its core, is equipped with the height adjustment component 14 and various support parts. It can switch between sitting mode, treatment mode, and emergency mode. In sitting mode, the headrest 10 is at its initial height, the backrest 11 is kept at 0° horizontal, the height adjustment component 14 adjusts the overall height of the dental chair to 540mm, the first leg support 17 and the second leg support 18 are in a horizontal fit, and the foot support 15 extends naturally. In treatment mode, the drive unit 16 drives the backrest 11 to tilt 15°-45°, the height adjustment component 14 raises the overall height to 600mm-800mm, the first leg support 17 flips upward 10°-15°, the second leg support 18 remains horizontal, and the armrests on both sides adjust their height and rotation angle through the built-in sub-drive structure to adapt to medical operations.

[0035] In emergency mode, the drive unit 16 quickly drives the backrest 11 to tilt 60°-75°, the height adjustment component 14 lowers the overall height to 450mm, and the first leg support 17 and the second leg support 18 simultaneously flip upward 30° to form a safe support posture.

[0036] In the auxiliary function module, the storage section is located on the side of the support section 12, which can store the user's personal belongings and is equipped with a magnetic closure device on the outside; the auxiliary table 19 is installed on the outside of the right armrest, and can be adjusted from 700mm to 900mm in height through the telescopic bracket. The surface has an anti-slip texture and can be used for placing items and reading; the backrest 11 and the seat contact surface are made of medical-grade PU anti-slip seat surface with diamond pattern and rounded corners.

[0037] The intelligent control module is electrically connected to the drive unit 16 and the height adjustment component 14 via a bus. It has built-in working condition judgment logic: when the instrument tray is detected to be extended and the foot pedal is activated, it automatically switches from the seated mode to the treatment mode; when the emergency button signal is received, it immediately switches to the emergency mode. The control terminal is integrated into the control panel on the side of the dental chair and the wireless remote control. The panel has a one-button mode switching button, and the remote control supports wireless control within 5 meters. The status notification unit has a built-in speaker and timer. When the treatment mode is started, the voice prompt "You have entered the treatment mode. Please pay attention to safety" is given. The timer is automatically started after the treatment is completed. When the timer ends, the voice prompt "The treatment process is completed. You can switch to the seated mode" is given. In the emergency mode, a buzzer alarm is issued simultaneously. All mode status and timing data are synchronized to the display panel of the dental chair frame in real time. It shares the intelligent control framework with the dental chair water cleaning and disinfection system to realize working condition linkage and status feedback.

[0038] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program goods. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program goods embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0039] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program goods according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0040] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0041] These computer program instructions can also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A multi-mode intelligent control method for a dental chair waterway cleaning and disinfection device, characterized in that, Includes the following steps: S100: Real-time acquisition of dental chair foot pedal status, instrument tray working signals, and mouthwash water pressure, flow rate, and liquid level parameters; S2 00: Based on the multi-signal fusion analysis, determine whether the dental chair is currently in standby mode, treatment mode, cleaning-triggered mode, or disinfection-triggered mode; S300: When the cleaning or disinfection trigger condition is determined, the cleaning or disinfection mode is turned on and the corresponding control mode is automatically switched. When not triggered, the standby mode is maintained. S400: The control unit generates coordinated drive commands for multiple solenoid valves and pumps to execute water cleaning and disinfection processes; S500: Uploads system operating parameters and fault information in real time through a remote communication module, supporting remote management and anomaly alarms.

2. The multi-mode intelligent control method for the dental chair waterway cleaning and disinfection equipment according to claim 1, characterized in that, The real-time acquisition in step S100 specifically includes: acquiring the inlet and outlet water pressure of the mouthwash water circuit through a pressure sensor; acquiring the instantaneous flow rate and cumulative flow rate of the pipeline through a flow sensor; acquiring the remaining liquid level of the cleaning solution tank and disinfectant tank through a liquid level sensor; and acquiring the foot pedal start / stop signal and the instrument tray extension / retraction status signal through a limit switch.

3. The multi-mode intelligent control method for the dental chair waterway cleaning and disinfection equipment according to claim 1, characterized in that, The working condition determination logic in step S200 is as follows: The diagnostic and treatment condition is determined to be foot-triggered, with the instrument panel extended and the flow rate within the preset diagnostic and treatment threshold range; The cleaning trigger condition is determined when the treatment ends after a preset delay time, or when the flow rate is lower than the minimum flow threshold, or when the pressure difference exceeds the anti-blockage threshold. Disinfection is triggered when it is first started each day, when the cumulative number of treatments reaches a preset value, or when the user initiates the process via a remote terminal.

4. The multi-mode intelligent control method for the dental chair waterway cleaning and disinfection equipment according to claim 1, characterized in that, The cleaning mode described in step S300 specifically includes: the control unit starts the cleaning pump, opens the inlet solenoid valve and the loop solenoid valve, so that the cleaning fluid circulates along the mouthwash water path of the dental chair and the instrument tubing, and at the same time starts the tubing pre-rinsing program to discharge residual sewage in the tubing. After the pre-rinsing is completed, the circulation cleaning is maintained for a preset time.

5. The multi-mode intelligent control method for the dental chair waterway cleaning and disinfection equipment according to claim 1, characterized in that, The disinfection process described in step S400 specifically includes: starting the disinfection unit, selectively turning on the ultraviolet sterilizer or the disinfectant metering pump, mixing the disinfectant and cleaning solution according to a preset ratio and then introducing them into the water circuit, maintaining the disinfection cycle for a preset time, performing a rinsing procedure after disinfection, draining the residual disinfectant solution, and ensuring that there is no disinfectant residue in the pipeline.

6. The multi-mode intelligent control method for the dental chair waterway cleaning and disinfection equipment according to claim 1, characterized in that, Steps S300 to S400 also include a backwashing mode, which is automatically triggered when the pipeline pressure difference exceeds a preset threshold. Compressed air is introduced into the water circuit through the air inlet pipe. The air inlet pipe has a built-in Venturi tube structure to accelerate the air flow rate to enhance the cleaning effect. At the same time, the solenoid valve is controlled to switch in reverse so that the water flow is reversed to peel off the impurities attached to the inner wall of the pipeline.

7. The multi-mode intelligent control method for the dental chair waterway cleaning and disinfection equipment according to claim 1, characterized in that, The collaborative drive described in step S400 also includes anti-clogging control: during the cleaning process, the built-in elastic brush rotation mechanism and rotating cleaning nozzle are activated. The brush moves back and forth along the inner wall of the pipeline, and the nozzle sprays cleaning fluid 360° to simultaneously remove biofilm and deposits from the inner wall and dead corners of the pipeline.

8. The multi-mode intelligent control method for the dental chair waterway cleaning and disinfection equipment according to claim 1, characterized in that, Step S400 also includes odor prevention and residue control: at the end of the cleaning and disinfection process, a vacuum pump is started to discharge the residual liquid in the pipeline, and the discharged gas is treated by an activated carbon filter unit to prevent odor leakage, while controlling the amount of residual liquid to be below a preset threshold.

9. The multi-mode intelligent control method for the dental chair waterway cleaning and disinfection equipment according to claim 1, characterized in that, Step S500 also includes parameter closed-loop adjustment: the control unit dynamically adjusts the opening degree of the solenoid valve and the pump speed according to the real-time collected pressure and flow parameters, so that the water circuit parameters are maintained within the preset optimal range; when the liquid level is too low, the pressure is abnormal, or the pump valve is faulty, the corresponding process is stopped immediately and an alarm message is sent to the remote terminal.

10. A multi-mode intelligent control system for a dental chair water system cleaning and disinfection device, which is implemented based on the multi-mode intelligent control method for a dental chair water system cleaning and disinfection device as described in any one of claims 1-9, characterized in that, The system includes the following modules: The dental chair frame includes: a posture adjustment module that can be switched to a seating mode, a treatment mode, and an emergency mode; the posture adjustment module includes a drive unit that can adjust the height, tilt angle, and armrest support parameters of the device; an auxiliary function module that includes a storage section, an adjustable height auxiliary table, and a non-slip seat surface; and an intelligent control module that is electrically connected to the posture adjustment module, has built-in working condition judgment logic, can automatically switch modes according to the treatment process stage or emergency state, and is equipped with a control terminal and a status notification unit to realize one-click mode switching, process timing, and voice prompts. Signal acquisition module: includes pressure sensor, flow sensor, level sensor, and limit switch, used to acquire signals of the dental chair water circuit and operating status; Control unit: Built-in PLC controller for signal fusion analysis, working condition determination, mode switching and drive instruction generation, supporting parameter preset and logic programming; The execution module includes a cleaning pump, a disinfection pump, a compressed air tank, a multi-way solenoid valve, an air inlet pipe, an ultraviolet sterilizer, an activated carbon filter unit, a pipeline brush mechanism, and a rotating cleaning nozzle, which are used to perform cleaning and disinfection actions. Remote communication module: Supports wireless or wired communication for system status uploading, remote control command reception, and anomaly alarms; Storage and display module: Used to store operation logs, fault records and parameter configurations, and equipped with a local display panel to display the current mode and parameters in real time.

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