Intelligent pressure regulating method of pump valve system for massage instrument

Abstract

The invention discloses an intelligent pressure regulating method of a pump valve system for a massage instrument, which comprises the following steps of: when the system is started, firstly executing inflation inspection, natural deflation inspection and air exhaust inspection, verifying the sealing performance and basic functions of a pipeline, and then setting operation set values of an inflation stage, a natural deflation stage and an air exhaust stage through a PLC (Programmable Logic Controller); finally, intelligent pressure regulating circulation time is set, the pressure sensor array is used for monitoring the pressure of each air bag in real time, electromagnetic valves are triggered to be switched on and off so as to achieve accurate start-stop and stage switching, the preset target pressure value and circulation time of each stage can be supported, and the automatic and customizable massage process is achieved, that is, an air flow path is cooperatively controlled through an electromagnetic valve set; and in combination with multi-stage pressure regulation and sensor feedback, accurate and adaptive control of the pressure of the air bag is realized, so that the comfort is improved, and the massage physiotherapy effect and safety are also improved.

Description

Technical Field

[0001] This invention specifically relates to an intelligent pressure regulation method for a pump valve system used in massagers. Background Technology

[0002] Airwave massagers, also known as pneumatic limb circulation therapy devices or intermittent pneumatic pressurization devices, are non-invasive physical therapy devices widely used in the medical and rehabilitation fields. By applying programmed inflation and deflation pressure to an airbag sleeve wrapped around the limb, they simulate manual massage. Their main purpose is to improve blood circulation and lymphatic drainage, thereby preventing thrombosis, reducing edema, relieving pain, promoting wound healing, and accelerating the overall recovery process. They are widely used in clinical and home rehabilitation.

[0003] Patent No. 202321301893.4 discloses an air inflation / deflation device for an air wave therapy device, and Patent No. 202323450378.5 discloses a multi-channel air path control component and an air wave therapy device. Both documents involve adding a dedicated exhaust solenoid valve to increase exhaust speed and reduce exhaust time. However, this method of promoting exhaust simply by adding an exhaust valve has the following problems: First, the gas exhaust speed is slow, affecting the formation of the pulse air pressure step, which not only causes strong discomfort but also leads to poor treatment and nursing effects. Second, simply adding an exhaust valve is based on the principle that there is a pressure difference between the inflated airbag and the atmosphere. As the exhaust process proceeds, the pressure difference between the two decreases, and the exhaust flow rate also decreases exponentially until the airbag always has "residual air" which affects subsequent storage. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide an intelligent pressure regulation method for a pump valve system used in massagers.

[0005] The technical solution adopted by this invention to solve its technical problem is: A smart pressure regulation method for a pump valve system in a massager includes the following operating steps: S1. Inflation Test: The PLC controller de-energizes the solenoid valve group for air extraction and opens its atmospheric vent. Then, it energizes the solenoid valve group for inflation, the solenoid valve group for airbag control, the integrated inflation / extraction pump, and the pressure sensor array. Simultaneously, it closes the atmospheric vent and vent of the solenoid valve group for inflation. At this time, the integrated inflation / extraction pump starts to inflate the air. Gas enters from the atmospheric vent of the solenoid valve group, exits from the outlet of the solenoid valve group for air extraction, is transported through the pipe to the pump's air extraction port, and then exits from the pump's inflation port. Gas is transported through the pipe to the inlet of the solenoid valve group for inflation, and finally exits from the outlet of the solenoid valve group for inflation. Gas is then input into the airbag control solenoid valve group through the pipe from the common inflation port. The separate airbag control solenoid valves inside the airbag control solenoid valve group inflate the airbag bags inside the airbag group. S2. Natural deflation test: After completing the inflation test in step S1, the PLC controller controls the power off of the integrated inflation and deflation pump, the inflation solenoid valve group and the deflation solenoid valve group, and closes the atmospheric vent of the inflation solenoid valve group and the atmospheric vent of the deflation solenoid valve group. Then, the airbag control solenoid valve group and the pressure sensor array are powered on, and the vent is opened to allow natural deflation until the pressure sensor array detects that the pressure of the airbag is consistent with the external atmospheric pressure. S3. Air Degassing Test: After completing the natural deflation test in step S2, the PLC controller controls the power off of the inflation solenoid valve group and opens the atmospheric vent of the inflation solenoid valve group. Then, the PLC controller controls the power on of the inflation solenoid valve group, the airbag control solenoid valve group, the integrated inflation and deflation pump and the pressure sensor array. At the same time, the atmospheric vent and vent of the deflation solenoid valve group are closed. At this time, the integrated inflation and deflation pump starts to perform air degassing. The gas in the airbag is sent to the common air degassing port, pumped through the pipe to the air inlet of the deflation solenoid valve group, and output from the air outlet of the deflation solenoid valve group. It is then transported through the pipe to the air outlet of the integrated pump, and output from the air inlet of the integrated pump. It is then transported through the pipe to the air inlet of the inflation solenoid valve group, and finally discharged from the atmospheric vent of the inflation solenoid valve group until the airbag inside the airbag group is completely degassed. S4. After completing the air extraction test in step S2, the pressure sensor array is set to detect the pressure set value of the airbag during the inflation stage, the pressure set value of the airbag during the natural deflation stage, and the pressure set value of the airbag during the air extraction stage through the PLC controller, and the cycle running time is set. S5. Complete the number of cycles of massage performed in step S4, and then proceed with the intelligent pressure-adjusting massage step: S51, Inflation Stage: The PLC controller controls the integrated pump for inflation and deflation, the solenoid valve group for inflation, the solenoid valve group for airbag control, and the pressure sensor array to be energized to ensure that the airbag is inflated. At the same time, the solenoid valve group for deflation is de-energized to ensure that the atmospheric vent of the solenoid valve group for deflation is connected to the atmosphere, ensuring airflow during the inflation process. When the discrete sensors on the pressure sensor array detect that the pressure of the corresponding airbag has reached the preset value, the discrete airbag control solenoid valve of the corresponding airbag control solenoid valve group is de-energized to maintain pressure. S52. After the inflation stage is completed, the system automatically enters the natural deflation stage. The PLC controller controls the power off of the integrated inflation and deflation pump, the inflation solenoid valve group, the deflation solenoid valve group and the airbag control solenoid valve group. The gas in the airbag bag in the airbag group is naturally deflated through the vent on the airbag control solenoid valve group. When the pressure sensor array detects that the air pressure in the airbag bag has dropped to the preset value, the system enters the deflation stage. S53. After the natural venting stage is completed, the automatic air extraction stage is entered. The PLC controller controls the integrated inflation and extraction pump, the air extraction solenoid valve group, and the airbag control solenoid valve group to be energized and the inflation solenoid valve group to be de-energized. The airbag in the airbag group is then evacuated. When the pressure sensor array detects that the air pressure inside the airbag reaches or is less than the atmospheric pressure, the PLC controller de-energizes the integrated inflation and extraction pump, the air extraction solenoid valve group, and the airbag control solenoid valve group to complete the air extraction operation. S54. After the air extraction stage is completed, the system will automatically enter the inflation stage again, repeating the specific steps S51-S53 until the set cycle massage operation time ends.

[0006] Preferably, to reduce the noise generated by exhaust pressure relief, sound-absorbing cotton is inserted into the atmospheric vent of the inflation solenoid valve group, the atmospheric vent of the exhaust solenoid valve group, and the vent hole.

[0007] The beneficial effects of this invention are: 1. The pressure sensor array monitors the pressure of each airbag in real time and compares it with the preset inflation, natural deflation, and de-inflation values ​​set by the PLC controller. Once the target value is reached, the PLC controller immediately issues a power-off pressure holding or stage switching command to ensure that the pressure is not too high or too low. Moreover, the inflation, natural deflation, and de-inflation test steps S1-S3 are run before the actual massage to verify the airway unobstructedness, pump and valve function, sensor effectiveness, and pressure relief capability, thus eliminating potential faults in advance. In addition, the inflation and pressure holding, de-inflation switching, and de-inflation switching steps are all strictly triggered according to the preset pressure values ​​to prevent over-inflation from causing discomfort or damage. 2. Users can set target values ​​for inflation pressure, natural deflation pressure, and decompression pressure, as well as cycle time for different stages. This allows for customization of the optimal pressure change mode to meet the rehabilitation intensity or comfort preferences of different users, or for different body parts. This simulates physiological massage. The cycle of inflation, pressure holding, natural slow deflation, and rapid decompression is close to the massage therapist's technique of "pressing, holding, slow release, and quick lifting," which can more effectively promote blood circulation and lymphatic return. Furthermore, the natural deflation in step S42 releases pressure slowly through the vent. Compared to forced decompression, the pressure drop is more gradual, reducing the discomfort caused by sudden pressure release. This not only improves comfort but also enhances the massage therapy effect and safety. 3. The automatic checks of steps S1-S3 before startup greatly reduce the risk of errors or damage during operation due to air blockage, valve failure, pump failure or sensor malfunction. Moreover, the PLC controller precisely controls the on / off state of the solenoid valve group for inflation, the solenoid valve group for evacuation and the solenoid valve group for airbag control, ensuring that the air path is opened or closed at the correct time and in the correct path, avoiding cross-flow, malfunction or abnormal pump load, and ensuring the reliability of all links in the entire air path system. 4. The airbags inside the airbag assembly can be deflated by a combination of an integrated inflation and deflation pump, an inflation solenoid valve assembly, a deflation solenoid valve assembly, and an airbag control solenoid valve assembly, until all the air is expelled from the airbags inside the airbag assembly, making it easy to store later. Attached Figure Description

[0008] Figure 1 This is a schematic diagram illustrating the inflation principle of an intelligent pressure regulation method for a pump valve system for a massager according to the present invention. Figure 2 This is a schematic diagram of the natural exhaust principle of an intelligent pressure regulation method for a pump valve system for a massager according to the present invention. Figure 3 This is a schematic diagram illustrating the air extraction principle of an intelligent pressure regulation method for a pump valve system used in a massager according to the present invention. Detailed Implementation

[0009] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0010] Example 1 A smart pressure regulation method for a pump valve system in a massager includes the following operating steps: S1. Inflation Test: The PLC controller 7 controls the de-energization of the suction solenoid valve group 3 and opens the atmospheric vent 33 of the suction solenoid valve group. Then, the PLC controller controls the energization of the inflation solenoid valve group 2, the airbag control solenoid valve group 4, the inflation and de-energization integrated pump 1, and the pressure sensor array 6. At the same time, the atmospheric vent 23 and the vent 44 of the inflation solenoid valve group are closed. At this time, the inflation and de-energization integrated pump 1 starts to inflate. The gas enters from the atmospheric vent 33 of the solenoid valve group, is output from the outlet 32 ​​of the suction solenoid valve group, is transported through the pipe to the suction port 12 of the integrated pump, is output from the inflation port 11 of the integrated pump, is transported through the pipe to the inlet 21 of the inflation solenoid valve group, and is finally output from the outlet 22 of the inflation solenoid valve group. The gas is input to the airbag control solenoid valve group 4 through the pipe from the common inflation port 42. The separate airbag control solenoid valve 41 inside the airbag control solenoid valve group 4 inflates the airbag bag 51 inside the airbag group 5. S2. Natural deflation test: After completing the inflation test in step S1, the PLC controller 7 controls the power off of the integrated inflation and deflation pump 1, the inflation solenoid valve group 2 and the deflation solenoid valve group 3, and closes the atmospheric vent 23 of the inflation solenoid valve group and the atmospheric vent 33 of the deflation solenoid valve group. Then, the airbag control solenoid valve group 4 and the pressure sensor array 6 are powered on, and the vent 44 is opened to allow natural deflation until the pressure sensor array 6 detects that the pressure of the airbag 51 is consistent with the external atmospheric pressure. S3. Air Degassing Test: After completing the natural deflation test in step S2, the PLC controller 7 controls the power off of the inflation solenoid valve group 2 and opens the atmospheric vent 23 of the inflation solenoid valve group. Then, the PLC controller 7 controls the power on the inflation solenoid valve group 2, the airbag control solenoid valve group 4, the integrated inflation and degassing pump 1, and the pressure sensor array 6. At the same time, the atmospheric vent 33 and the vent 44 of the degassing solenoid valve group are closed. At this time, the integrated inflation and degassing pump 1 starts to degas. The gas in the airbag bag 51 is transported to the common degassing port 43, pumped through the pipe to the air inlet 31 of the degassing solenoid valve group, and output from the air outlet 32 ​​of the degassing solenoid valve group. It is then transported through the pipe to the degassing port 12 of the integrated pump, and output from the inflation port 11 of the integrated pump. It is then transported through the pipe to the air inlet 21 of the inflation solenoid valve group, and finally discharged from the atmospheric vent 23 of the inflation solenoid valve group until the airbag bag 51 inside the airbag group 5 is completely emptied. S4. After completing the air extraction test in step S2, the pressure sensor array 6 is set to detect the pressure set value of the airbag 51 during the inflation stage, the pressure set value of the airbag 51 during the natural deflation stage, and the pressure set value of the airbag 51 during the air extraction stage through the PLC controller 7, and the cycle running time is set. S5. Complete the number of cycles of massage performed in step S4, and then proceed with the intelligent pressure-adjusting massage step: S51, Inflation Stage: The PLC controller 7 controls the power supply of the integrated pump 1, inflation solenoid valve group 2, airbag control solenoid valve group 4, and pressure sensor array 6 to ensure that the airbag 51 is inflated. At the same time, the power supply of the de-energized solenoid valve group 3 is de-energized to ensure that the atmospheric vent 33 of the de-energized solenoid valve group is connected to the atmosphere to ensure airflow during the inflation process. When the discrete sensor on the pressure sensor array 6 detects that the pressure of the corresponding airbag 51 reaches the preset value, the discrete airbag control solenoid valve 41 of the corresponding airbag control solenoid valve group 4 is de-energized to maintain pressure. S52. After the inflation stage is completed, the system automatically enters the natural deflation stage. The PLC controller 7 controls the power off of the integrated inflation and deflation pump 1, inflation solenoid valve group 2, deflation solenoid valve group 3, and airbag control solenoid valve group 4. The gas in the airbag bag 51 in the airbag group 5 is naturally deflated through the vent hole 44 on the airbag control solenoid valve group 4. When the pressure sensor array 6 detects that the air pressure in the airbag bag 51 has dropped to the preset value, the system enters the deflation stage. S53. After the natural exhaust stage is completed, the pumping stage is automatically entered. The PLC controller 7 controls the integrated pumping pump 1, the pumping solenoid valve group 3, and the airbag control solenoid valve group 4 to be energized, while the inflation solenoid valve group 2 is de-energized. The airbag 51 in the airbag group 5 is pumped out. When the pressure sensor array 6 detects that the air pressure inside the airbag 51 reaches or is less than the atmospheric pressure, the PLC controller 7 de-energizes the integrated pumping pump 1, the pumping solenoid valve group 3, and the airbag control solenoid valve group 4 to complete the pumping operation. S54. After the air extraction stage is completed, the system will automatically enter the inflation stage again, repeating the specific steps S51-S53 until the set cycle massage operation time ends.

[0011] In this embodiment, to reduce the noise generated by exhaust pressure relief, sound-absorbing cotton is inserted into the atmospheric vent 23 of the inflation solenoid valve group, the atmospheric vent 33 of the exhaust solenoid valve group, and the vent 44.

[0012] It should be further explained that in steps S1-S5, the pressure sensor array monitors the pressure of each airbag in real time and compares it with the preset inflation, natural deflation, and de-inflation values ​​set by the PLC controller. After the target value is reached, the PLC controller immediately issues a power-off pressure holding or stage switching command to ensure that the pressure is not too high or too low. Moreover, the inflation, natural deflation, and de-inflation test steps in steps S1-S3 are run before the formal massage to verify the airway unobstructedness, pump and valve function, sensor effectiveness, and pressure relief capability, and to eliminate potential faults in advance. In addition, the inflation and pressure holding, de-inflation switching, and de-inflation switching steps are all strictly triggered according to the preset pressure values ​​to prevent over-inflation from causing discomfort or damage.

[0013] Furthermore, according to steps S1-S5, users can set target values ​​for inflation pressure, natural deflation pressure, and decompression pressure, as well as cycle time for different stages. This allows for the customization of optimal pressure change patterns to meet the rehabilitation intensity or comfort preferences of different users, or for different body parts. This simulates physiological massage, with its cycle of inflation, pressure holding, natural slow deflation, and rapid decompression closely resembling the massage therapist's technique of "pressing, holding, slow release, and quick lifting." This can more effectively promote blood circulation and lymphatic return. Moreover, the natural deflation in step S42 releases pressure slowly through the vent, resulting in a smoother pressure drop compared to forced decompression. This reduces discomfort caused by sudden pressure release, improving not only comfort but also the effectiveness and safety of the massage therapy.

[0014] It should be further explained that the airbag 51 inside the airbag assembly 5 can be deflated by the combined inflator-deflator pump 1, the inflation solenoid valve assembly 2, the deflator solenoid valve assembly 3, and the airbag control solenoid valve assembly 4, until all the air is expelled from the airbag 51 inside the airbag assembly 5, making it convenient for subsequent storage.

[0015] Example 2 The intelligent pressure regulation method of the pump valve system for the massager is the same as that in Example 1, except that gas is replaced with fluid. Cold or hot fluid can be selected according to the nursing needs of massage therapy. The atmospheric vent 23 of the inflation solenoid valve group, the atmospheric vent 33 of the degassing solenoid valve group, and the vent 44 are connected to the tank for conveying fluid.

[0016] The above embodiments of the present invention are not intended to limit the scope of protection of the present invention. The implementation of the present invention is not limited thereto. All other modifications, substitutions or alterations made to the above structure of the present invention based on the above content of the present invention, in accordance with ordinary technical knowledge and common practice in the field, without departing from the basic technical idea of ​​the present invention, shall fall within the scope of protection of the present invention.

Claims

1. An intelligent pressure regulation method for a pump valve system of a massager, characterized in that, The following steps are included: S1. Inflation Test: The PLC controller de-energizes the solenoid valve group for air extraction and opens its atmospheric vent. Then, it energizes the solenoid valve group for inflation, the solenoid valve group for airbag control, the integrated inflation / extraction pump, and the pressure sensor array. Simultaneously, it closes the atmospheric vent and vent of the solenoid valve group for inflation. At this time, the integrated inflation / extraction pump starts to inflate the air. Gas enters from the atmospheric vent of the solenoid valve group, exits from the outlet of the solenoid valve group for air extraction, is transported through the pipe to the pump's air extraction port, and then exits from the pump's inflation port. Gas is transported through the pipe to the inlet of the solenoid valve group for inflation, and finally exits from the outlet of the solenoid valve group for inflation. Gas is then input into the airbag control solenoid valve group through the pipe from the common inflation port. The separate airbag control solenoid valves inside the airbag control solenoid valve group inflate the airbag bags inside the airbag group. S2. Natural deflation test: After completing the inflation test in step S1, the PLC controller controls the power off of the integrated inflation and deflation pump, the inflation solenoid valve group and the deflation solenoid valve group, and closes the atmospheric vent of the inflation solenoid valve group and the atmospheric vent of the deflation solenoid valve group. Then, the airbag control solenoid valve group and the pressure sensor array are powered on, and the vent is opened to allow natural deflation until the pressure sensor array detects that the pressure of the airbag is consistent with the external atmospheric pressure. S3. Air Degassing Test: After completing the natural deflation test in step S2, the PLC controller controls the power off of the inflation solenoid valve group and opens the atmospheric vent of the inflation solenoid valve group. Then, the PLC controller controls the power on of the inflation solenoid valve group, the airbag control solenoid valve group, the integrated inflation and deflation pump and the pressure sensor array. At the same time, the atmospheric vent and vent of the deflation solenoid valve group are closed. At this time, the integrated inflation and deflation pump starts to perform air degassing. The gas in the airbag is sent to the common air degassing port, pumped through the pipe to the air inlet of the deflation solenoid valve group, and output from the air outlet of the deflation solenoid valve group. It is then transported through the pipe to the air outlet of the integrated pump, and output from the air inlet of the integrated pump. It is then transported through the pipe to the air inlet of the inflation solenoid valve group, and finally discharged from the atmospheric vent of the inflation solenoid valve group until the airbag inside the airbag group is completely degassed. S4. After completing the air extraction test in step S2, the pressure sensor array is set to detect the pressure set value of the airbag during the inflation stage, the pressure set value of the airbag during the natural deflation stage, and the pressure set value of the airbag during the air extraction stage through the PLC controller, and the cycle running time is set. S5. Complete the number of cycles of massage performed in step S4, and then proceed with the intelligent pressure-adjusting massage step: S51, Inflation Stage: The PLC controller controls the integrated pump for inflation and deflation, the solenoid valve group for inflation, the solenoid valve group for airbag control, and the pressure sensor array to be energized to ensure that the airbag is inflated. At the same time, the solenoid valve group for deflation is de-energized to ensure that the atmospheric vent of the solenoid valve group for deflation is connected to the atmosphere, ensuring airflow during the inflation process. When the discrete sensors on the pressure sensor array detect that the pressure of the corresponding airbag has reached the preset value, the discrete airbag control solenoid valve of the corresponding airbag control solenoid valve group is de-energized to maintain pressure. S52. After the inflation stage is completed, the system automatically enters the natural deflation stage. The PLC controller controls the power off of the integrated inflation and deflation pump, the inflation solenoid valve group, the deflation solenoid valve group and the airbag control solenoid valve group. The gas in the airbag bag in the airbag group is naturally deflated through the vent on the airbag control solenoid valve group. When the pressure sensor array detects that the air pressure in the airbag bag has dropped to the preset value, the system enters the deflation stage. S53. After the natural venting stage is completed, the automatic air extraction stage is entered. The PLC controller controls the integrated inflation and extraction pump, the air extraction solenoid valve group, and the airbag control solenoid valve group to be energized and the inflation solenoid valve group to be de-energized. The airbag in the airbag group is then evacuated. When the pressure sensor array detects that the air pressure inside the airbag reaches or is less than the atmospheric pressure, the PLC controller de-energizes the integrated inflation and extraction pump, the air extraction solenoid valve group, and the airbag control solenoid valve group to complete the air extraction operation. S54. After the air extraction stage is completed, the system will automatically enter the inflation stage again, repeating the specific steps S51-S53 until the set cycle massage operation time ends.

2. The intelligent pressure regulation method for the pump valve system of a massager according to claim 1, characterized in that, To reduce the noise generated by exhaust pressure relief, sound-absorbing cotton is inserted into the atmospheric vent of the inflation solenoid valve assembly, the atmospheric vent of the exhaust solenoid valve assembly, and the vent hole.

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