Pulse diagnosis instrument and control method thereof

Abstract

The present invention relates to the field of pulse diagnosis instrument technology, and specifically provides a pulse diagnosis instrument and a control method thereof, aiming to solve the problem that the pulse diagnosis instrument uses a conventional motor-driven air pump and the air pressure control accuracy is not high. The pulse diagnosis instrument of the present invention includes: a fixing member; a pressurized airbag connected to the fixing member; a pulse diagnosis sensor arranged on the side of the pressurized airbag opposite to the fixing member; a piezoelectric pump, whose exhaust port is connected to the pressurized airbag through a first pipeline; a diverter, whose inlet end is connected to the first pipeline, and is used to guide a part of the gas pumped into the first pipeline by the piezoelectric pump when the target inflation speed is less than the minimum inflation speed of the piezoelectric pump; a first air pressure sensor, which is used to detect the air pressure in the pressurized airbag; a controller, which is connected to the pulse diagnosis sensor, the piezoelectric pump, the diverter and the first air pressure sensor. In this way, the inflation speed can be controlled more accurately, thereby improving the accuracy required for pressure control, and can also meet the needs of slow inflation and pressure increase.

Description

Technical Field

[0001] The present invention relates to the technical field of pulse diagnosis instruments, and in particular provides a pulse diagnosis instrument and a control method thereof. Background Art

[0002] In traditional pulse diagnosis, doctors diagnose diseases by touching the patient's pulse. This method relies on the doctor's experience and subjective judgment, and there are certain errors and uncertainties. With the development of science and technology, in order to improve the accuracy and objectivity of pulse diagnosis, researchers have combined modern electronic technology with traditional Chinese medicine pulse diagnosis and developed a pulse diagnosis instrument. This instrument can objectively and quantitatively analyze pulse signals, providing doctors with more accurate diagnosis and treatment basis.

[0003] At present, the inflation air pump of a conventional pulse diagnosis instrument is driven by a conventional motor. Due to the limitations of the motor driving principle, it is impossible to improve the accuracy required for pressure control.

[0004] Therefore, this field needs a new technical solution to solve the above problems. Summary of the invention

[0005] The present invention aims to solve the above technical problem, namely, to solve the problem that the air pressure control accuracy of the air pump driven by a conventional motor in the pulse diagnosis instrument is not high.

[0006] In a first aspect, the present invention provides a pulse diagnosis instrument, which includes: a fixing member; a pressurized airbag connected to the fixing member; a pulse diagnosis sensor arranged on the side of the pressurized airbag opposite to the fixing member; a piezoelectric pump, an exhaust port of which is connected to the pressurized airbag via a first pipeline; a shunt, an inlet end of which is connected to the first pipeline, for guiding a portion of the gas pumped into the first pipeline by the piezoelectric pump when a target inflation speed is less than a minimum inflation speed of the piezoelectric pump; a first air pressure sensor for detecting the air pressure in the pressurized airbag; and a controller, which is communicatively connected to the pulse diagnosis sensor, the piezoelectric pump, the shunt and the first air pressure sensor.

[0007] In the preferred technical solution of the above-mentioned pulse diagnosis instrument, the pulse diagnosis instrument includes a piezoelectric pump group, which is formed by a plurality of piezoelectric pumps connected in series in sequence; the exhaust port of the piezoelectric pump group is connected to the pressurized airbag through the first pipeline, and the intake port of the piezoelectric pump group is connected to the atmospheric environment.

[0008] In the preferred technical solution of the above-mentioned pulse diagnosis instrument, the pulse diagnosis instrument includes a plurality of the piezoelectric pump groups, the plurality of piezoelectric pump groups are connected in parallel, the exhaust ports of the plurality of piezoelectric pump groups are connected to the pressurized airbag through the first pipeline, and the intake ports of the plurality of piezoelectric pump groups are connected to the atmospheric environment.

[0009] In the preferred technical solution of the above-mentioned pulse diagnosis instrument, the pulse diagnosis instrument includes a plurality of the piezoelectric pumps, which are connected by a second pipeline, and a valve assembly is arranged on the second pipeline; when the valve assembly is in a first state, the plurality of piezoelectric pumps are connected in parallel, the exhaust port of each of the piezoelectric pumps is connected to the pressurized airbag through the first pipeline, and the suction port of each of the piezoelectric pumps is connected to the atmospheric environment; when the valve assembly is in a second state, the plurality of piezoelectric pumps are connected in series, the exhaust port of the piezoelectric pump located at the most downstream is connected to the pressurized airbag through the first pipeline, and the suction port of the piezoelectric pump located at the most upstream is connected to the atmospheric environment.

[0010] In the preferred technical solution of the above-mentioned pulse diagnosis instrument, the pulse diagnosis instrument also includes a gas storage tank, in which a second air pressure sensor is arranged, and the second air pressure sensor is communicatively connected with the controller, and the outlet end of the diverter can be connected with the gas storage tank so that a part of the gas pumped into the first pipeline by the piezoelectric pump flows into the gas storage tank when it is discharged through the diverter.

[0011] When the above technical solution is adopted, the pulse diagnosis instrument includes: a fixing part; a pressurized airbag connected to the fixing part; a pulse diagnosis sensor arranged on the side of the pressurized airbag opposite to the fixing part; a piezoelectric pump, an exhaust port of which is connected to the pressurized airbag through a first pipeline; a shunt, an inlet end of which is connected to the first pipeline, and is used to guide a part of the gas pumped into the first pipeline by the piezoelectric pump when the target inflation speed is less than the minimum inflation speed of the piezoelectric pump; a first air pressure sensor, which is used to detect the air pressure in the pressurized airbag; and a controller, which is communicatively connected to the pulse diagnosis sensor, the piezoelectric pump, the shunt and the first air pressure sensor.

[0012] Through such a setting, the piezoelectric pump replaces the motor-driven air pump, and when inflating the pressurized airbag of the pulse diagnosis instrument, the inflation speed can be controlled more accurately, thereby improving the accuracy required for pressure control. In addition, when the target inflation speed is less than the minimum inflation speed of the piezoelectric pump, a part of the gas pumped into the first pipeline by the piezoelectric pump can be discharged through the diverter, thereby eliminating the limitation of the piezoelectric pump itself on the minimum inflation speed of the pressurized airbag and meeting the demand for slow inflation and pressure increase.

[0013] Preferably, the pulse diagnosis instrument comprises a piezoelectric pump group, which is formed by a plurality of piezoelectric pumps connected in series in sequence; the exhaust port of the piezoelectric pump group is connected to the pressurized airbag through a first pipeline, and the suction port of the piezoelectric pump group is connected to the atmospheric environment.

[0014] Since the air pressure at the exhaust port of the piezoelectric pump is positively correlated with the air pressure at the intake port, such a setting can improve the pressurization capacity of the piezoelectric pump group, thereby meeting a wider pressurization range of the pressurization airbag of the pulse diagnosis instrument and weakening the limitation of the piezoelectric pump itself on the pressurization capacity.

[0015] Preferably, the pulse diagnosis instrument comprises a plurality of piezoelectric pump groups, the plurality of piezoelectric pump groups are connected in parallel, the exhaust ports of the plurality of piezoelectric pump groups are connected to the pressurized airbag through a first pipeline, and the suction ports of the plurality of piezoelectric pump groups are connected to the atmospheric environment.

[0016] Through such a setting, the pressurization airbag of the pulse diagnosis instrument can meet a wider pressurization range, and can also meet the demand for rapid inflation and pressure increase when the air pressure in the pressurization airbag is high.

[0017] Preferably, the pulse diagnosis instrument includes a plurality of piezoelectric pumps, which are connected by a second pipeline, and a valve assembly is arranged on the second pipeline; when the valve assembly is in a first state, the plurality of piezoelectric pumps are connected in parallel, the exhaust port of each piezoelectric pump is connected to the pressurized airbag through the first pipeline, and the suction port of each piezoelectric pump is connected to the atmospheric environment; when the valve assembly is in a second state, the plurality of piezoelectric pumps are connected in series, the exhaust port of the piezoelectric pump located at the most downstream is connected to the pressurized airbag through the first pipeline, and the suction port of the piezoelectric pump located at the most upstream is connected to the atmospheric environment.

[0018] Through such a setting, when the air pressure in the pressurized airbag is relatively low, the valve assembly is in the first state, all the piezoelectric pumps are connected in parallel, the exhaust port of each piezoelectric pump is connected to the pressurized airbag through the first pipeline, and the air intake port of each piezoelectric pump is connected to the atmosphere, so that the inflation speed of the pressurized air pump can be increased as much as possible; when the air pressure in the pressurized airbag is relatively high, the valve assembly is in the second state, all the piezoelectric pumps are connected in series, the exhaust port of the piezoelectric pump located at the most downstream is connected to the pressurized airbag through the first pipeline, and the air intake port of the piezoelectric pump located at the most upstream is connected to the atmosphere, so that the inflation speed of the pressurized airbag can be increased when the air pressure in the pressurized airbag is relatively high. In other words, through such a setting, the demand for rapid inflation of the pressurized airbag can be met in both the early and late stages of the inflation of the pressurized airbag.

[0019] Preferably, the pulse diagnosis instrument also includes a gas storage tank, in which a second air pressure sensor is arranged, and the second air pressure sensor is communicatively connected to the controller. The outlet end of the diverter can be connected to the gas storage tank so that a portion of the gas pumped into the first pipeline by the piezoelectric pump flows into the gas storage tank when it is discharged through the diverter.

[0020] Through such an arrangement, when the pressurized airbag is inflated, the first pipeline and the gas storage tank can be connected through the flow divider, so that when the inflation speed required by the pressurized airbag is less than the inflation speed of the piezoelectric pump, the inflation speed required by the pressurized airbag can be achieved without frequently or excessively adjusting the inflation speed of the piezoelectric pump, thereby reducing the impact of frequent or excessive adjustment of the inflation speed of the piezoelectric pump on the life of the piezoelectric pump, extending the service life of the piezoelectric pump, ensuring the reliability of the use of the piezoelectric pump, and reducing the noise generated by the piezoelectric pump. In addition, when the pressurized airbag is inflated, when the air pressure in the gas storage tank is greater than the air pressure of the pressurized airbag, the pressurized airbag can be inflated through the gas storage tank, or the pressurized airbag can be inflated through the gas storage tank and the piezoelectric pump at the same time, so as to meet the demand for rapid inflation of the pressurized airbag.

[0021] In a second aspect, the present invention also provides a control method for a pulse diagnosis instrument, which is the pulse diagnosis instrument described in the above technical solution, and the control method includes: when the piezoelectric pump inflates the pressurized airbag, comparing the target inflation speed with the minimum inflation speed of the piezoelectric pump; if the target inflation speed is less than the minimum inflation speed of the piezoelectric pump, controlling the diverter to divert a portion of the gas pumped into the first pipeline by the piezoelectric pump, so that the inflation speed of the piezoelectric pump to the pressurized airbag through the first pipeline reaches the target inflation speed; if the target inflation speed is not less than the minimum inflation speed of the piezoelectric pump, controlling the piezoelectric pump to inflate the pressurized airbag according to the target inflation speed.

[0022] In the preferred technical solution of the above control method, the pulse diagnosis instrument includes multiple piezoelectric pump groups, each of which is formed by multiple piezoelectric pumps connected in series in sequence, and the multiple piezoelectric pump groups are connected in parallel. The exhaust port of the piezoelectric pump group is connected to the pressurized airbag through the first pipeline, and the intake port of the multiple piezoelectric pump groups is connected to the atmospheric environment; the step of "controlling the piezoelectric pump to inflate the pressurized airbag according to the target inflation speed" specifically includes: selecting the piezoelectric pump group according to the target inflation speed; controlling the selected piezoelectric pump group to work.

[0023] In the preferred technical solution of the above control method, the pulse diagnosis instrument includes a plurality of the piezoelectric pumps, which are connected by a second pipeline, and a valve assembly is arranged on the second pipeline; when the valve assembly is in a first state, the plurality of piezoelectric pumps are connected in parallel, and the exhaust port of each of the piezoelectric pumps is connected to the pressurized airbag through the first pipeline, and the air intake port of each of the piezoelectric pumps is connected to the atmospheric environment; when the valve assembly is in a second state, the plurality of piezoelectric pumps are connected in series, and the exhaust port of the piezoelectric pump located at the most downstream is connected to the pressurized airbag through the first pipeline, and the air intake port of each of the piezoelectric pumps is connected to the atmospheric environment. The air intake port of the most upstream piezoelectric pump is connected to the atmospheric environment; the step of "controlling the piezoelectric pump to inflate the pressurized airbag according to the target inflation speed" specifically includes: comparing the target air pressure with a preset value; if the target air pressure is greater than the preset value, controlling the valve assembly to be in the first state, and controlling the multiple piezoelectric pumps to work so as to inflate according to the target inflation speed; when the air pressure in the pressurized airbag reaches the preset value, controlling the valve assembly to be in the second state, and controlling the multiple piezoelectric pumps to work so as to inflate according to the target inflation speed.

[0024] In the preferred technical solution of the above control method, the pulse diagnosis instrument also includes a gas storage tank, a second air pressure sensor is arranged in the gas storage tank, the second air pressure sensor is communicatively connected to the controller, and the outlet end of the diverter can be connected to the gas storage tank, so that a part of the gas pumped into the first pipeline by the piezoelectric pump flows into the gas storage tank when it is discharged through the diverter; the step of "controlling the diverter to discharge a part of the gas pumped into the first pipeline by the piezoelectric pump" includes: comparing the air pressure in the pressurized airbag with the air pressure in the gas storage tank; if the air pressure in the pressurized airbag is not less than the air pressure in the gas storage tank, then controlling the diverter to discharge a part of the gas pumped into the first pipeline by the piezoelectric pump to the gas storage tank.

[0025] In the preferred technical scheme of the above-mentioned control method, the step of "controlling the diverter to discharge a part of the gas pumped into the first pipeline by the piezoelectric pump" also includes: if the pressure in the pressurized airbag is lower than the pressure in the gas storage tank, controlling the diverter to discharge a part of the gas pumped into the first pipeline by the piezoelectric pump to the atmosphere; when the pressure in the pressurized airbag is equal to the pressure in the gas storage tank, controlling the diverter to discharge a part of the gas pumped into the first pipeline by the piezoelectric pump to the gas storage tank.

[0026] It should be noted that the control method of the pulse diagnosis instrument has all the technical effects of the pulse diagnosis instrument described in any of the above technical solutions, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0028] Figure 1 is a schematic structural diagram of a pulse diagnosis instrument according to a first embodiment of the present invention;

[0029] Figure 2 is a schematic structural diagram of a pulse diagnosis instrument according to a second embodiment of the present invention;

[0030] Figure 3 is a schematic structural diagram of a pulse diagnosis instrument according to a third embodiment of the present invention;

[0031] Figure 4 is a schematic structural diagram of a pulse diagnosis instrument according to a fourth embodiment of the present invention;

[0032] Figure 5 It is a main step diagram of the control method of the pulse diagnosis instrument of the present invention.

[0033] List of reference numerals:

[0034] 11. Support plate; 12. Pressurized airbag; 13. Pulse diagnosis sensor; 21. First piezoelectric pump; 22. Second piezoelectric pump; 23. Third piezoelectric pump; 31. First pipeline; 32. Second pipeline; 33. Third pipeline; 34. Fourth pipeline; 4. Diverter; 5. First air pressure sensor; 6. Controller; 61. Circuit board; 62. Power regulation module; 63. Frequency regulation module; 71. First three-way valve; 72. Second three-way valve; 8. Gas storage tank. DETAILED DESCRIPTION

[0035] First, those skilled in the art should understand that the embodiments described below are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0036] It should be noted that in the description of the present invention, the terms "upper", "lower" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a direct connection, or an indirect connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Based on the problem of low precision of air pressure control in the pulse diagnosis instrument using a conventional motor-driven air pump mentioned in the background technology, the present invention provides a pulse diagnosis instrument, which includes: a fixing member; a pressurized airbag connected to the fixing member; a pulse diagnosis sensor arranged on the side of the pressurized airbag opposite to the fixing member; a piezoelectric pump, whose exhaust port is connected to the pressurized airbag through a first pipeline; a shunt, whose inlet end is connected to the first pipeline, and is used to guide a part of the gas pumped into the first pipeline by the piezoelectric pump when the target inflation speed is less than the minimum inflation speed of the piezoelectric pump; a first air pressure sensor, which is used to detect the air pressure in the pressurized airbag; and a controller, which is communicatively connected to the pulse diagnosis sensor, the piezoelectric pump, the shunt and the first air pressure sensor.

[0039] Through such a setting, the piezoelectric pump replaces the motor-driven air pump, and when inflating the pressurized airbag of the pulse diagnosis instrument, the inflation speed can be controlled more accurately, thereby improving the accuracy required for pressure control. In addition, when the target inflation speed is less than the minimum inflation speed of the piezoelectric pump, a part of the gas pumped into the first pipeline by the piezoelectric pump can be discharged through the diverter, thereby eliminating the limitation of the piezoelectric pump itself on the minimum inflation speed of the pressurized airbag and meeting the demand for slow inflation and pressure increase.

[0040] Refer to the following Figures 1 to 4 The pulse diagnosis instrument of the present invention is introduced. Figure 1 is a schematic structural diagram of a pulse diagnosis instrument according to a first embodiment of the present invention; Figure 2 is a schematic structural diagram of a pulse diagnosis instrument according to a second embodiment of the present invention; Figure 3 is a schematic structural diagram of a pulse diagnosis instrument according to a third embodiment of the present invention; Figure 4 It is a schematic structural diagram of a pulse diagnosis instrument according to a fourth embodiment of the present invention.

[0041] In the first embodiment of the pulse diagnosis instrument of the present invention, Figure 1As shown, the pulse diagnosis instrument includes a fixing part, a pressurized airbag 12 , a pulse diagnosis sensor 13 , a first piezoelectric pump 21 , a shunt 4 , a first air pressure sensor 5 and a controller 6 . The fixing part includes a support plate 11 and a wristband (not shown in the figure); the pressurized airbag 12 is connected to the lower side of the support plate 11; the pulse diagnosis sensor 13 is arranged on the lower side of the pressurized airbag 12; the exhaust port of the first piezoelectric pump 21 is connected to the pressurized airbag 12 through the first pipeline 31, and the suction port of the first piezoelectric pump 21 is connected to the atmospheric environment; the inlet end of the diverter 4 is connected to the first pipeline 31 through the third pipeline 33, and the outlet end of the diverter 4 is connected to the atmospheric environment; the first air pressure sensor 5 is connected to the first pipeline 31 through the fourth pipeline 34, and is used to detect the air pressure in the pressurized airbag 12; the controller 6 includes a circuit board 61 and a power adjustment module 62 and a frequency adjustment module 63 arranged on the circuit board 61, the first air pressure sensor 5 is fixed on the circuit board 61 and is communicatively connected to the circuit board 61; the circuit board 61 is communicatively connected to the pulse diagnosis sensor 13, the first piezoelectric pump 21, and the diverter 4 through a signal line (not shown in the figure). The flow divider 4 is used to discharge a portion of the gas pumped into the first pipeline 31 by the first piezoelectric pump 21 when the target inflation speed is less than the minimum inflation speed of the first piezoelectric pump 21 .

[0042] When the pulse diagnosis instrument is needed to detect the pulse information of the human body, the pulse diagnosis sensor 13 is attached to the radial artery of the human wrist, and the pulse diagnosis sensor 13, the pressurized airbag 12 and the support plate 11 are fixed to the wrist by a wristband. The controller 6 controls the first piezoelectric pump 21 to work so that the first piezoelectric pump 21 inflates the pressurized airbag 12. At the same time, the controller 6 obtains the air pressure in the pressurized airbag 12 in real time through the first air pressure sensor 5. When the air pressure in the pressurized airbag 12 reaches the set value, the controller 6 controls the first piezoelectric pump 21 to stop working, so that the pulse diagnosis sensor 13 is pressed against the surface of the human wrist with the set pressure, and then the controller 6 controls the pulse diagnosis sensor 13 to obtain the pulse information. During the process of the controller 6 controlling the first piezoelectric pump 21 to inflate the pressurized airbag 12, when the target inflation speed is less than the minimum inflation speed of the first piezoelectric pump 21, a portion of the gas pumped into the first pipeline 31 by the first piezoelectric pump 21 is discharged, so that the flow rate of the gas pumped into the pressurized airbag 12 by the first piezoelectric pump 21 through the first pipeline 31 reaches the target inflation speed, thereby pressurizing the pressurized airbag 12 at the required pressure increase speed.

[0043] The pulse diagnosis instrument of the present invention uses a piezoelectric pump to replace the motor-driven air pump. When the pressurized airbag 12 of the pulse diagnosis instrument is inflated, the inflation speed can be controlled more accurately, thereby improving the accuracy required for pressure control. In addition, when the target inflation speed is less than the minimum inflation speed of the piezoelectric pump, a portion of the gas pumped into the first pipeline 31 by the piezoelectric pump can be discharged through the diverter 4, thereby eliminating the limitation of the piezoelectric pump itself on the minimum inflation speed of the pressurized airbag 12, and meeting the demand for slow inflation and pressure increase.

[0044] In the second embodiment of the pulse diagnosis instrument of the present invention, Figure 2 As shown, different from the first embodiment, the pulse diagnosis instrument includes a piezoelectric pump group, which is formed by three piezoelectric pumps connected in series in sequence, the exhaust port of the piezoelectric pump group is connected to the pressurized airbag 12 through the first pipeline 31, and the suction port of the piezoelectric pump group is connected to the atmospheric environment. Specifically, the piezoelectric pump group includes a first piezoelectric pump 21, a second piezoelectric pump 22, and a third piezoelectric pump 23. The suction port of the first piezoelectric pump 21 is connected to the exhaust port of the second piezoelectric pump 22, and the suction port of the second piezoelectric pump 22 is connected to the exhaust port of the third piezoelectric pump 23. The exhaust port of the first piezoelectric pump 21 serves as the exhaust port of the piezoelectric pump group, and the suction port of the third piezoelectric pump 23 serves as the suction port of the piezoelectric pump group. The exhaust port of the first piezoelectric pump 21 is connected to the inlet end of the first pipeline 31, and the suction port of the third piezoelectric pump 23 is connected to the atmospheric environment.

[0045] Since the air pressure at the exhaust port of the piezoelectric pump is positively correlated with the air pressure at the intake port, such a setting can improve the pressurization capacity of the piezoelectric pump group, thereby satisfying a wider pressurization range of the pressurization airbag 12 of the pulse diagnosis instrument and weakening the limitation of the piezoelectric pump itself on the pressurization capacity.

[0046] It should be noted that the piezoelectric pump group includes three piezoelectric pumps connected in series. This is only a specific setting method, which can be adjusted in actual applications. For example, the piezoelectric pump group includes two piezoelectric pumps connected in series, four piezoelectric pumps connected in series, or more piezoelectric pumps connected in series.

[0047] Based on the second embodiment of the pulse diagnosis instrument, preferably, the pulse diagnosis instrument includes multiple piezoelectric pump groups in the first embodiment, the multiple piezoelectric pump groups are connected in parallel, the exhaust ports of the piezoelectric pump groups are connected to the pressurized airbag 12 through the first pipeline, and the suction ports of the multiple piezoelectric pump groups are connected to the atmospheric environment.

[0048] Through such an arrangement, the pressurization airbag 12 of the pulse diagnosis instrument can be provided with a wider pressurization range, and the demand for rapid inflation and pressure increase can be met when the air pressure in the pressurization airbag 12 is relatively high.

[0049] In the third embodiment of the pulse diagnosis instrument of the present invention, different from the first embodiment, the pulse diagnosis instrument includes a plurality of piezoelectric pumps, which are connected by a second pipeline 32, and a valve assembly is arranged on the second pipeline 32; when the valve assembly is in a first state, the plurality of piezoelectric pumps are connected in parallel, the exhaust port of each piezoelectric pump is connected to the pressurized airbag through the first pipeline, and the suction port of each piezoelectric pump is connected to the atmospheric environment; when the valve assembly is in a second state, the plurality of piezoelectric pumps are connected in series, the exhaust port of the piezoelectric pump located at the most downstream is connected to the pressurized airbag through the first pipeline, and the suction port of the piezoelectric pump located at the most upstream is connected to the atmospheric environment.

[0050] like Figure 3 As shown, specifically, the pulse diagnosis instrument includes three piezoelectric pumps, namely the first piezoelectric pump 21, the second piezoelectric pump 22 and the third piezoelectric pump 23, and the valve assembly includes two first three-way valves 71 and two second three-way valves 72; the exhaust port of the first piezoelectric pump 21 is connected to the first pipeline 31, the air intake port of the first piezoelectric pump 21 is connected to the outlet of a first three-way valve 71, one inlet of the first three-way valve 71 is connected to the atmospheric environment, and the other inlet is connected to an outlet of a second three-way valve 72 through a section of the second pipeline 32, and the other outlet of the second three-way valve 72 is connected to The first pipeline 31 is connected, and the inlet of the second three-way valve 72 is connected to the exhaust port of the second piezoelectric pump 22; the air intake port of the second piezoelectric pump 22 is connected to the outlet of another first three-way valve 71, one inlet of the first three-way valve 71 is connected to the atmosphere, and the other inlet is connected to an outlet of another second three-way valve 72 through another section of the second pipeline 32, and the other outlet of the second three-way valve 72 is connected to the first pipeline 31, and the inlet of the second three-way valve 72 is connected to the exhaust port of the third piezoelectric pump 23; the air intake port of the third piezoelectric pump 23 is connected to the atmosphere. Among them, when the outlet of the first three-way valve 71 is connected to one of its inlets, its outlet is disconnected from its other inlet; when the inlet of the second three-way valve 72 is connected to one of its outlets, its inlet is disconnected from its other outlet.

[0051] When the valve assembly is in the first state, the air intake of the first piezoelectric pump 21 is connected to the atmosphere through a first three-way valve 71, the air exhaust of the second piezoelectric pump 22 is connected to the first pipeline 31 through a second three-way valve 72, the air intake of the second piezoelectric pump 22 is connected to the atmosphere through another first three-way valve 71, and the air exhaust of the third piezoelectric pump 23 is connected to the first pipeline 31 through another second three-way valve 72. At this time, the first piezoelectric pump 21, the second piezoelectric pump 22 and the third piezoelectric pump 23 are connected in parallel, the air exhaust of the first piezoelectric pump 21, the second piezoelectric pump 22 and the third piezoelectric pump 23 are all connected to the pressurized airbag 12 through the first pipeline, and the air intake of the second piezoelectric pump 22 and the third piezoelectric pump 23 are all connected to the atmosphere.

[0052] When the valve assembly is in the second state, the air intake of the first piezoelectric pump 21 is connected to the exhaust port of the second piezoelectric pump 22 through a first three-way valve 71 and a second three-way valve 72, and the air intake of the second piezoelectric pump 22 is connected to the exhaust port of the third piezoelectric pump 23 through another first three-way valve 71 and another second three-way valve 72. At this time, the first piezoelectric pump 21, the second piezoelectric pump 22 and the third piezoelectric pump 23 are connected in series, the exhaust port of the first piezoelectric pump 21 is connected to the pressurized airbag 12 through the first pipeline 31, and the air intake of the third piezoelectric pump 23 is connected to the atmospheric environment.

[0053] Through such an arrangement, when the air pressure in the pressurized airbag 12 is relatively low, the valve assembly is in the first state, the first piezoelectric pump 21, the second piezoelectric pump 22 and the third piezoelectric pump 23 are connected in parallel, the exhaust ports of the first piezoelectric pump 21, the second piezoelectric pump 22 and the third piezoelectric pump 23 are connected to the pressurized airbag 12 through the first pipeline 31, and the suction ports of the first piezoelectric pump 21, the second piezoelectric pump 22 and the third piezoelectric pump 23 are connected to the atmospheric environment, so that the inflation speed can be increased as much as possible; when the air pressure in the pressurized airbag 12 is relatively high, the valve assembly is in the second state, the first piezoelectric pump 21, the second piezoelectric pump 22 and the third piezoelectric pump 23 are connected in series, the exhaust port of the first piezoelectric pump 21 is connected to the pressurized airbag 12 through the first pipeline 31, and the suction port of the third piezoelectric pump 23 is connected to the atmospheric environment, so that the inflation speed of the pressurized airbag 12 can be increased when the air pressure in the pressurized airbag 12 is relatively high. That is to say, through such an arrangement, the demand for rapid inflation of the pressurized airbag 12 can be met both in the early stage and the later stage of inflation of the pressurized airbag 12 .

[0054] In the fourth embodiment of the pulse diagnosis instrument of the present invention, different from the first embodiment, the pulse diagnosis instrument further includes a gas storage tank 8, in which a second air pressure sensor (not shown) is arranged, and the second air pressure sensor is communicatively connected with the controller 6. The outlet end of the diverter 4 is connected with the gas storage tank 8, so that a part of the gas pumped into the first pipeline 31 by the first piezoelectric pump 21 flows into the gas storage tank 8 when it is discharged through the diverter 4.

[0055] Through such a configuration, when the pressurized airbag 12 is inflated, the first pipeline 31 and the gas storage tank 8 can be connected through the diverter 4, so that when the inflation speed required by the pressurized airbag 12 is less than the inflation speed of the first piezoelectric pump 21, the inflation speed required by the pressurized airbag 12 can be achieved without frequently or excessively adjusting the inflation speed of the first piezoelectric pump 21, thereby reducing the influence of frequent or excessive adjustment of the inflation speed of the first piezoelectric pump 21 on the life of the first piezoelectric pump 21, extending the service life of the first piezoelectric pump 21, ensuring the reliability of the use of the first piezoelectric pump 21, and reducing the noise generated by the first piezoelectric pump 21. In addition, when the pressurized airbag 12 is inflated, when the air pressure in the gas storage tank 8 is greater than the air pressure of the pressurized airbag 12, the first pipeline 31 and the gas storage tank 8 can be connected through the diverter 4 so that the pressurized airbag 12 can be inflated through the gas storage tank 8, or the pressurized airbag 12 can be inflated through the gas storage tank 8 and the first piezoelectric pump 21 at the same time to meet the demand for rapid inflation of the pressurized airbag 12.

[0056] It should be noted that in the fourth embodiment of the pulse diagnosis instrument, the outlet end of the diverter 4 is only connected to the gas storage tank 8, which is also a specific setting mode, which can be adjusted in actual application. For example, in another specific setting mode, the outlet end of the diverter 4 is respectively connected to the gas storage tank 8 and the atmosphere through a three-way valve, so as to selectively connect the outlet end of the diverter 4 to one of the atmosphere and the gas storage tank 8. In addition, on the basis of the first embodiment, the second embodiment and the third embodiment of the pulse diagnosis instrument, a gas storage tank 8 can be added, and a second air pressure sensor (not shown in the figure) is arranged in the gas storage tank 8, and the second air pressure sensor is connected to the controller 6 in communication, and the outlet end of the diverter 4 is arranged to be able to communicate with the gas storage tank 8. In addition, in each of the above-mentioned pulse diagnosis instrument embodiments, the first air pressure sensor 5 is connected to the first pipeline 31 through the fourth pipeline 34, and is used to detect the air pressure in the pressurized airbag 12. This is only a specific setting method, and it can be adjusted in actual application. For example, in another specific setting method, the first air pressure sensor 5 is set in the pressurized airbag 12 to detect the air pressure in the pressurized airbag 12; and the fixing member can also be replaced by an annular shell. In addition, the first three-way valve 71 and the second three-way valve 72 in each of the above-mentioned embodiments can be manually controlled three-way valves or electrically controlled three-way valves. When the first three-way valve 71 and the second three-way valve 72 are electrically controlled three-way valves, the first three-way valve 71 and the second three-way valve 72 are connected to the controller 6 for communication.

[0057] In addition, the present invention also provides a control method for a pulse diagnosis instrument. The pulse diagnosis instrument includes: a fixing member; a pressurized airbag connected to the fixing member; a pulse diagnosis sensor arranged on a side of the pressurized airbag opposite to the fixing member; a piezoelectric pump, an exhaust port of which is connected to the pressurized airbag via a first pipeline; a shunt, an inlet end of which is connected to the first pipeline, for guiding a portion of the gas pumped into the first pipeline by the piezoelectric pump when the target inflation speed is less than the minimum inflation speed of the piezoelectric pump; a first air pressure sensor for detecting the air pressure in the pressurized airbag; and a controller, which is in communication with the pulse diagnosis sensor, the piezoelectric pump, the shunt, and the first air pressure sensor.

[0058] like Figure 3 As shown, the control method of the pulse diagnosis instrument includes the following steps:

[0059] Step S100, when the piezoelectric pump inflates the pressurized airbag, comparing the target inflation speed with the minimum inflation speed of the piezoelectric pump;

[0060] Step S200: if the target inflation speed is less than the minimum inflation speed of the piezoelectric pump, the flow divider is controlled to guide a portion of the gas pumped into the first pipeline by the piezoelectric pump so that the inflation speed of the piezoelectric pump into the pressurized airbag through the first pipeline reaches the target inflation speed;

[0061] Step S300: If the target inflation speed is not less than the minimum inflation speed of the piezoelectric pump, the piezoelectric pump is controlled to inflate the pressurized airbag according to the target inflation speed.

[0062] Through this control method, the limitation of the piezoelectric pump itself on the minimum inflation speed of the pressurized airbag can be eliminated, thereby meeting the demand for slow inflation and pressure increase.

[0063] exist Figure 5 Based on the control method of the pulse diagnosis instrument shown in the figure, preferably, the pulse diagnosis instrument includes a plurality of piezoelectric pump groups, each of which is formed by connecting a plurality of piezoelectric pumps in series in sequence, and the plurality of piezoelectric pump groups are connected in parallel, and the exhaust port of the piezoelectric pump group is connected to the pressurized airbag through a first pipeline, and the air intake port of the plurality of piezoelectric pump groups is connected to the atmospheric environment; the step of "controlling the piezoelectric pump to inflate the pressurized airbag according to the target inflation speed" specifically includes:

[0064] Select the piezoelectric pump set according to the target inflation speed;

[0065] Control the operation of the selected piezoelectric pump group.

[0066] Exemplarily, the pulse diagnosis instrument includes three piezoelectric pump groups. The target inflation speed is judged against the first set value and the second set value, wherein the first set value is less than the second set value; when the target inflation speed is less than the first set value, one piezoelectric pump group is selected and the piezoelectric pump group is controlled to inflate the pressurized airbag; when the target inflation speed is greater than or equal to the first set value and less than the second set value, two piezoelectric pump groups are selected and the two piezoelectric pump groups are controlled to inflate the pressurized airbag; when the target inflation speed is greater than or equal to the second set value, three piezoelectric pump groups are selected and the three piezoelectric pump groups are controlled to inflate the pressurized airbag. It should be noted that when controlling the piezoelectric pump group to inflate the pressurized airbag, it is necessary to control the power supply voltage and / or power supply frequency of the piezoelectric pump of the piezoelectric pump group according to the target inflation speed so as to accurately achieve the target inflation speed.

[0067] Through such an arrangement, the piezoelectric pump group can be reasonably selected according to the target inflation speed, so as to avoid the piezoelectric pump working under too low load or too high load, thereby extending the service life of the piezoelectric pump.

[0068] exist Figure 5 On the basis of the control method of the pulse diagnosis instrument shown in the figure, preferably, the pulse diagnosis instrument includes a plurality of piezoelectric pumps, the plurality of piezoelectric pumps are connected through a second pipeline, and a valve assembly is arranged on the second pipeline; when the valve assembly is in a first state, the plurality of piezoelectric pumps are connected in parallel, the exhaust port of each piezoelectric pump is connected to the pressurized airbag through the first pipeline, and the air intake port of each piezoelectric pump is connected to the atmospheric environment; when the valve assembly is in a second state, the plurality of piezoelectric pumps are connected in series, the exhaust port of the piezoelectric pump located at the most downstream is connected to the pressurized airbag through the first pipeline, and the air intake port of the piezoelectric pump located at the most upstream is connected to the atmospheric environment; the step of "controlling the piezoelectric pump to inflate the pressurized airbag according to the target inflation speed" specifically includes:

[0069] Compare the target air pressure with the preset value;

[0070] If the target air pressure is greater than a preset value, the control valve assembly is in a first state, and the plurality of piezoelectric pumps are controlled to operate so as to inflate according to the target inflation speed;

[0071] When the air pressure in the pressurized airbag reaches a preset value, the control valve assembly is in a second state, controlling the plurality of piezoelectric pumps to operate so as to inflate according to a target inflation speed.

[0072] It should be noted that the preset value may be one third, two thirds, or other values ​​smaller than the target pressure.

[0073] Through such an arrangement, the demand for rapid inflation of the pressurized airbag can be met both in the early stage and the later stage of inflation of the pressurized airbag.

[0074] On the basis of the above-mentioned control method of the pulse diagnosis instrument, preferably, the pulse diagnosis instrument further comprises a gas storage tank, a second air pressure sensor is arranged in the gas storage tank, the second air pressure sensor is communicatively connected with the pulse diagnosis sensor, and the outlet end of the flow divider can be communicated with the gas storage tank, so that a part of the gas pumped into the first pipeline by the piezoelectric pump flows into the gas storage tank when it is discharged through the flow divider; the step of "controlling the flow divider to discharge a part of the gas pumped into the first pipeline by the piezoelectric pump" comprises:

[0075] Compare the air pressure in the pressurized air bag with the air pressure in the gas storage tank;

[0076] If the air pressure in the pressurized airbag is not less than the air pressure in the gas storage tank, the flow divider is controlled to guide part of the gas pumped into the first pipeline by the piezoelectric pump to the gas storage tank.

[0077] Preferably, the control method further comprises:

[0078] When the pressurized airbag needs to be inflated, the air pressure in the pressurized airbag is compared with the air pressure in the gas storage tank;

[0079] If the air pressure in the pressurized airbag is lower than the air pressure in the gas storage tank, the flow divider is controlled to connect the gas storage tank with the pressurized airbag until the air pressure in the pressurized airbag is equal to the air pressure in the gas storage tank.

[0080] Through such a setting, the gas exported through the diverter can be stored in a gas storage tank. When the pressurized airbag is inflated and the air pressure in the pressurized airbag is lower than the air pressure in the gas storage tank, the pressurized airbag is inflated through the gas storage tank to speed up the inflation speed, shorten the inflation time, and reduce power consumption.

[0081] Preferably, the step of “controlling the flow divider to guide out a portion of the gas pumped into the first pipeline by the piezoelectric pump” further comprises:

[0082] If the pressure in the pressurized airbag is lower than the gas pressure in the gas storage tank, the flow divider is controlled to guide part of the gas pumped into the first pipeline by the piezoelectric pump to the atmosphere;

[0083] When the pressure in the pressurized airbag is equal to the gas pressure in the gas storage tank, the flow divider is controlled to guide a portion of the gas pumped into the first pipeline by the piezoelectric pump to the gas storage tank.

[0084] Through such a setting, the gas exported by the diverter can be selectively stored in the gas storage tank according to the specific situation, which can adapt to the gas storage needs of more scenarios.

[0085] It should be noted that, when the pulse diagnosis instrument is equipped with one piezoelectric pump or multiple piezoelectric pumps of the same specification connected in parallel, the minimum inflation speed of the piezoelectric pump here refers to the minimum inflation speed of a single piezoelectric pump; when the pulse diagnosis instrument is equipped with multiple piezoelectric pumps of different specifications connected in parallel, the minimum inflation speed of the piezoelectric pump here refers to the minimum inflation speed of the piezoelectric pump with the smallest minimum inflation speed; when the pulse diagnosis instrument is equipped with multiple piezoelectric pumps of the same specification and the multiple piezoelectric pumps of the same specification can be switched between a series state and a parallel state, the minimum inflation speed of the piezoelectric pump here refers to the minimum inflation speed of a single piezoelectric pump; when the pulse diagnosis instrument is equipped with a piezoelectric pump group consisting of multiple piezoelectric pumps connected in series, the minimum inflation speed of the piezoelectric pump here refers to the inflation speed of the piezoelectric pump group when each piezoelectric pump operates at the minimum inflation speed.

[0086] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A pulse diagnosis instrument, characterized in that: The pulse diagnosis instrument comprises: Fixings; a pressurized air bag (12) connected to the fixing member; a pulse diagnosis sensor (13) disposed on a side of the pressurized airbag (12) opposite to the fixing member; A piezoelectric pump, the exhaust port of which is connected to the pressurized airbag (12) via a first pipeline; a flow divider (4), the inlet end of which is in communication with the first pipeline (31), and is used to discharge a portion of the gas pumped into the first pipeline (31) by the piezoelectric pump when a target inflation speed is less than a minimum inflation speed of the piezoelectric pump; a first air pressure sensor (5) for detecting the air pressure in the pressurized airbag (12); A controller (6) is communicatively connected with the pulse diagnosis sensor (13), the piezoelectric pump, the shunt (4) and the first air pressure sensor (5).

2. The pulse diagnosis instrument according to claim 1, characterized in that: The pulse diagnosis instrument comprises a piezoelectric pump group, wherein the piezoelectric pump group is formed by connecting a plurality of piezoelectric pumps in series in sequence; The exhaust port of the piezoelectric pump group is connected to the pressurized airbag (12) through the first pipeline (31), and the suction port of the piezoelectric pump group is connected to the atmospheric environment.

3. The pulse diagnosis instrument according to claim 2, characterized in that: The pulse diagnosis instrument comprises a plurality of piezoelectric pump groups, the plurality of piezoelectric pump groups are connected in parallel, the exhaust ports of the plurality of piezoelectric pump groups are connected to the pressurized airbag (12) via the first pipeline (31), and the suction ports of the plurality of piezoelectric pump groups are connected to the atmospheric environment.

4. The pulse diagnosis instrument according to claim 1, characterized in that: The pulse diagnosis instrument comprises a plurality of the piezoelectric pumps, the plurality of piezoelectric pumps are connected via a second pipeline (32), and a valve assembly is arranged on the second pipeline (32); When the valve assembly is in a first state, the plurality of piezoelectric pumps are connected in parallel, the exhaust port of each piezoelectric pump is connected to the pressurized airbag (12) through the first pipeline (31), and the suction port of each piezoelectric pump is connected to the atmospheric environment; When the valve assembly is in the second state, the multiple piezoelectric pumps are connected in series, the exhaust port of the piezoelectric pump located at the most downstream is connected to the pressurized airbag (12) through the first pipeline (31), and the suction port of the piezoelectric pump located at the most upstream is connected to the atmospheric environment.

5. The pulse diagnosis instrument according to any one of claims 1 to 4, characterized in that: The pulse diagnosis instrument further comprises a gas storage tank (8), wherein a second air pressure sensor is arranged in the gas storage tank (8), and the second air pressure sensor is communicatively connected with the controller (6). The outlet end of the diverter (4) can be connected with the gas storage tank (8), so that a part of the gas pumped into the first pipeline (31) by the piezoelectric pump flows into the gas storage tank (8) when it is discharged through the diverter (4).

6. A control method for a pulse diagnosis instrument, characterized in that: The pulse diagnosis instrument is the pulse diagnosis instrument according to claim 1, and the control method comprises: When the piezoelectric pump inflates the pressurized airbag (12), comparing the target inflation speed with the minimum inflation speed of the piezoelectric pump; If the target inflation speed is less than the minimum inflation speed of the piezoelectric pump, the flow divider (4) is controlled to discharge a portion of the gas pumped into the first pipeline (31) by the piezoelectric pump, so that the inflation speed of the piezoelectric pump into the pressurized airbag (12) through the first pipeline (31) reaches the target inflation speed; If the target inflation speed is not less than the minimum inflation speed of the piezoelectric pump, the piezoelectric pump is controlled to inflate the pressurized airbag (12) according to the target inflation speed.

7. The control method according to claim 6, characterized in that: The pulse diagnosis instrument comprises a plurality of piezoelectric pump groups, each of which is formed by a plurality of piezoelectric pumps connected in series in sequence, the plurality of piezoelectric pump groups are connected in parallel, the exhaust port of the piezoelectric pump group is connected to the pressurized airbag (12) through the first pipeline (31), and the suction port of the plurality of piezoelectric pump groups is connected to the atmospheric environment; The step of "controlling the piezoelectric pump to inflate the pressurized airbag (12) according to the target inflation speed" specifically includes: Selecting a piezoelectric pump group according to the target inflation speed; Control the operation of the selected piezoelectric pump group.

8. The control method according to claim 6, characterized in that: The pulse diagnosis instrument comprises a plurality of the piezoelectric pumps, the plurality of piezoelectric pumps are connected via a second pipeline (32), and a valve assembly is arranged on the second pipeline (32); When the valve assembly is in a first state, the plurality of piezoelectric pumps are connected in parallel, the exhaust port of each piezoelectric pump is connected to the pressurized airbag (12) through the first pipeline (31), and the suction port of each piezoelectric pump is connected to the atmospheric environment; When the valve assembly is in the second state, the plurality of piezoelectric pumps are connected in series, the exhaust port of the piezoelectric pump located at the most downstream is connected to the pressurized airbag (12) through the first pipeline (31), and the suction port of the piezoelectric pump located at the most upstream is connected to the atmospheric environment; The step of "controlling the piezoelectric pump to inflate the pressurized airbag (12) according to the target inflation speed" specifically includes: Compare the target air pressure with the preset value; If the target air pressure is greater than the preset value, the valve assembly is controlled to be in the first state, and the plurality of piezoelectric pumps are controlled to operate so as to inflate according to the target inflation speed; When the air pressure in the pressurized airbag (12) reaches the preset value, the valve assembly is controlled to be in the second state, and the multiple piezoelectric pumps are controlled to operate so as to inflate according to the target inflation speed.

9. The control method according to any one of claims 6 to 8, characterized in that: The pulse diagnosis instrument further comprises a gas storage tank (8), wherein a second air pressure sensor is arranged in the gas storage tank (8), and the second air pressure sensor is communicatively connected to the controller (6); the outlet end of the flow divider (4) can be connected to the gas storage tank (8), so that a part of the gas pumped into the first pipeline (31) by the piezoelectric pump flows into the gas storage tank (8) when it is discharged through the flow divider (4); The step of "controlling the flow divider (4) to guide out a portion of the gas pumped into the first pipeline (31) by the piezoelectric pump" comprises: comparing the air pressure in the pressurized airbag (12) with the air pressure in the gas storage tank (8); If the air pressure in the pressurized airbag (12) is not less than the air pressure in the gas storage tank (8), the diverter (4) is controlled to discharge a portion of the gas pumped into the first pipeline (31) by the piezoelectric pump to the gas storage tank (8).

10. The control method according to claim 9, characterized in that: The step of "controlling the flow divider (4) to guide out a portion of the gas pumped into the first pipeline (31) by the piezoelectric pump" also includes: If the gas pressure in the pressurized airbag (12) is lower than the gas pressure in the gas storage tank (8), the flow divider (4) is controlled to discharge a portion of the gas pumped into the first pipeline (31) by the piezoelectric pump into the atmosphere; When the air pressure in the pressurized airbag (12) is equal to the air pressure in the gas storage tank (8), the diverter (4) is controlled to discharge a portion of the gas pumped into the first pipeline (31) by the piezoelectric pump to the gas storage tank (8).

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