A pulse reproduction device based on feedback regulation and a reproduction method thereof

Abstract

The invention relates to the field of intelligent medical auxiliary equipment, in particular to a pulse reproduction device based on feedback regulation and a reproduction method thereof. The pulse reproduction device comprises a circulation unit, an execution module, a bionic hand, a pulse detector and a controller. The circulation unit comprises a liquid storage tank, a motor oil pump, a distributor and a pulse synthesizer which are sequentially connected by pipelines. The pulse synthesizer is connected to the liquid storage tank through a pulse synthesis pipeline. The execution module comprises three solenoid valves which are alternately opened and closed to form a pulse wave on a pulse synthesis pipeline. The pulse synthesis pipeline passes through the radial artery of the bionic hand. The pulse detector is used to detect the pulse wave on the pulse synthesis pipeline to form a pulse signal. The controller is used to continuously correct the control parameters of the solenoid valve and the motor oil pump according to the pulse signal of the pulse detector. In the invention, three battery valves are alternately opened and closed to form three pulses on the pipeline, which are synthesized into a pulse wave through the pulse synthesizer. The pulse wave has a triple wave peak, thereby effectively simulating the pulse wave.

Description

Technical Field

[0001] The present invention relates to the field of intelligent medical auxiliary equipment, and in particular to a pulse reproduction device based on feedback regulation and a reproduction method thereof. Background Art

[0002] Pulse diagnosis is one of the diagnostic methods of TCM syndrome differentiation and diagnosis, and it occupies an extremely important position in the means and methods of TCM to understand the nature of diseases. The pulse contains a wealth of physiological health information of the human body. Traditional TCM theory believes that the pulse reflects the surplus and deficiency of qi and blood, the deficiency and excess of meridians, and the prosperity and decline of viscera in the human body, and contains rich pathological information. Pulse plays a vital guiding role and is of great significance in the syndrome differentiation and treatment of TCM. Traditional TCM pulse diagnosis requires doctors and patients to obtain pulse information face to face. However, due to China's vast territory and uneven economic development level, the distribution of medical resources is uneven, resulting in advanced medical equipment and experienced TCM doctors mainly concentrated in economically developed areas. The medical distribution in rural and marginal areas is seriously uneven, and the medical level is low. In addition, the low utilization rate of limited medical resources has caused the difficulty of medical treatment for people in ordinary areas of small and medium-sized cities. On the other hand, pulse diagnosis is more dependent on the personal perception and medical experience of TCM doctors, which is not easy to express and communicate, and restricts the inheritance and development of TCM. Telemedicine combined with the Internet of Things has become a key link in solving the above problems. Internet of Things technology is widely used. In the medical field, remote diagnosis and treatment is one of the core applications of this technology. Combining the Internet of Things technology with telemedicine, developing a remote TCM diagnosis and treatment system based on the Internet of Things technology, and realizing the modernization and intelligence of TCM diagnosis and treatment, can not only meet people's diagnosis and treatment needs, but also realize the full record and re-simulation of the TCM pulse diagnosis process, which is of great significance to the inheritance and development of TCM and is also an urgent requirement for the modernization of TCM.

[0003] Traditional Chinese medicine diagnosis methods have great limitations. For example, patients and doctors must meet face to face for diagnosis. However, with the rapid development of science and technology, Chinese medicine diagnosis can mostly be achieved remotely through video technology, thus breaking the limitations of traditional Chinese medicine diagnosis methods.

[0004] However, in existing remote diagnosis, remote pulse diagnosis is still a technical problem, because the existing pulse monitors generally collect pulse data through resistive and capacitive sensor arrays, and reproduce the pulse based on the pulse data. The pulse information is studied as a pulse wave. The pulse wave mainly has three characteristic parts: the main wave, the tidal wave and the dicrotic wave. The three characteristic parts can be further subdivided into characteristic points such as the main wave peak, the tidal wave peak, the dicrotic wave peak and the dicrotic wave trough. The existing pulse reproduction device generally only forms a single pulse, cannot fully reproduce the pulse wave, and the reproduction accuracy is poor. Summary of the invention

[0005] Therefore, it is necessary to provide a pulse reproduction device and a reproduction method based on feedback regulation to solve the problem of poor reproduction accuracy of the existing pulse reproduction device.

[0006] To achieve the above object, the present invention provides a pulse reproduction device based on feedback regulation, comprising:

[0007] A circulation unit, the circulation unit comprising a liquid storage tank, a motor oil pump, a distributor, and a pulse synthesizer connected in sequence by pipelines, the liquid storage tank stores circulating liquid, the distributor comprises a liquid inlet and three liquid outlets, the liquid inlet is connected to the motor oil pump through a pipeline, the three liquid outlets are connected to the pulse synthesizer, and the pulse synthesizer is connected to the liquid storage tank through a pulse synthesis pipeline;

[0008] An execution module, the execution module includes three solenoid valves, the three solenoid valves are respectively arranged on the pipelines connected to the three liquid outlets and the pulse synthesizer, and the three solenoid valves are alternately opened and closed to form a pulse wave on the pulse synthesis pipeline;

[0009] Bionic hand, the pulse synthesis pipeline passes through the radial artery of the bionic hand;

[0010] A pulse detector, which is arranged at the radial artery of the bionic hand and is used to detect the pulse wave on the pulse synthesis pipeline to form a pulse signal;

[0011] A controller is electrically connected to the pulse detector, the three solenoid valves and the motor oil pump, and is used to continuously correct control parameters of the solenoid valves and the motor oil pump according to the pulse signal of the pulse detector.

[0012] Furthermore, the pulse synthesizer includes a synthesis cavity, and the liquid outlet and the pulse synthesis pipeline are both connected to the synthesis cavity.

[0013] When the solenoid valve is opened instantaneously, the output circulating liquid forms a shock wave, which converges into the synthesizer. The pulse synthesizer can integrate the impulse of the silicone oil, superimpose and synthesize it, and transmit it to the pulse synthesis pipeline, so that the pulse beat can be reproduced in the bionic hand. There is a synthesis cavity in the synthesizer, which can play a filtering role, making the output pulse image smoother.

[0014] Furthermore, the pulse synthesis pipeline includes a first connecting tube, a simulated radial artery pipeline, and a second connecting tube that are connected in sequence, the first connecting tube is connected to the pulse synthesizer, the second connecting tube is connected to the liquid storage tank, the simulated radial artery pipeline is located at the radial artery of the bionic hand, the simulated radial artery pipeline is a latex tube, and the first connecting tube and the second connecting tube are TPU tubes. The TPU tube has a small damping elasticity, which can reduce the attenuation of the pulse during pipeline transportation. The latex tube has good elasticity. When the synthesized pulse wave is transmitted to the simulated radial artery pipeline, the surface of the simulated radial artery pipeline can form an obvious pulsation, thereby facilitating the detection of the pulse wave.

[0015] Furthermore, the pipe in the circulation unit is made of TPU material, the circulating liquid in the circulation unit is silicone oil, and the connection at both ends of the TPU pipe is sealed by fixing nuts and anti-silicone oil tape. The TPU pipe has a small damping elasticity, which can reduce the attenuation of the pulse during pipeline transportation.

[0016] Furthermore, the distributor is provided with a reflux port, which is connected to the liquid storage tank through a reflux pipe. The reflux port allows part of the circulating liquid to flow back into the liquid storage tank after the circulating liquid is pumped into the distributor, and the pressure and flow rate of the circulating liquid outputted from the liquid outlet can be adjusted to ensure stable use of the device.

[0017] Furthermore, a reflux valve is provided on the pipeline connecting the reflux port and the liquid storage tank, and the reflux valve is used to adjust the flow rate of reflux between the reflux port and the liquid storage tank. Adjusting the reflux valve is used to simulate the peripheral resistance of human blood vessels. Adjusting the size of the reflux valve can determine the descending rate of the descending branch of the pulse wave, thereby improving the simulation accuracy.

[0018] The above-mentioned reproduction method of the pulse reproduction device based on feedback regulation comprises the following steps:

[0019] (1) Input the pulse data to be reproduced into the controller,

[0020] (2) The controller controls the motor oil pump to start, and then the three solenoid valves open in sequence to form a pulse wave on the pulse synthesis pipeline.

[0021] (3) The pulse detector detects the pulse wave signal and transmits it to the controller.

[0022] (4) The controller compares the obtained pulse signal with the pulse data to be reproduced, corrects the control parameters of the solenoid valve and the motor oil pump, and repeats steps (2)-(4);

[0023] (5) Reproduce the accurate pulse.

[0024] The above technical solution has the following beneficial effects:

[0025] In the present invention, a circulating liquid pipe unit is designed to simulate the blood circulation system, and a motor oil pump simulates the heart. The circulating liquid in the liquid storage tank is pumped to circulate through various components of the circulation unit. The electromagnetic valve opens and closes at the radial artery of the bionic hand to form a pulse. Three battery valves open and close alternately on the pipeline to form three pulses. A pulse wave is synthesized by a pulse synthesizer. The pulse wave has three wave peaks, thereby effectively simulating the main wave, tidal wave and dicrotic wave of the pulse wave. The controller can compare the detected pulse signal with the pulse data to be reproduced, and continuously feedback and adjust the electromagnetic valve to ultimately ensure accurate reproduction of the pulse. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a system connection structure diagram of the pulse reproduction device described in the specific implementation method;

[0027] Figure 2 The figure is a flow chart of the reproduction method of the pulse reproduction device according to the specific implementation method.

[0028] Figure 3 This is a flow chart of pulse wave formation in step (2) of the reproduction method described in the specific implementation method.

[0029] Figure 4 This is a pulse data graph to be reproduced according to the specific implementation method.

[0030] Figure 5 This is a data graph of the opening time of different solenoid valves I and the appearance time of the main wave peak of the pulse wave according to the specific implementation method.

[0031] Figure 6 The specific implementation method is to adjust the opening time T of the solenoid valve I f , the data graph of the time when the characteristic points of the main wave peak appear.

[0032] Figure 7 A data graph of the time when the tidal wave peak occurs when all solenoid valves are closed for the first time according to the specific implementation method.

[0033] Figure 8 The second closing time T of all electromagnetic valves is adjusted as described in the specific implementation method. AE Then adjust the data graph of the appearance time of all feature points.

[0034] Fig. 9 The specific reproduced pulse data and initial pulse data curve graph described in the specific implementation manner.

[0035] Description of reference numerals:

[0036] 1. Circulation unit; 11. Liquid storage tank; 12. Motor oil pump; 13. Distributor; 131. Reflux pipeline; 132. Reflux valve; 14. Pulse synthesizer; 15. Pulse synthesis pipeline; 151. First connecting pipe; 152. Simulated radial artery pipeline; 153. Second connecting pipe;

[0037] 2. Execution module; 21. Solenoid valve;

[0038] 3. Bionic hand;

[0039] 4. Pulse detector;

[0040] 5. Controller; DETAILED DESCRIPTION

[0041] In order to explain the technical content, structural features, achieved objectives and effects of the technical solution in detail, the following is a detailed description in conjunction with specific embodiments and accompanying drawings.

[0042] See also Figure 1 This embodiment discloses a pulse reproduction device based on feedback regulation, including a circulation unit 1, an execution module 2, a bionic hand 3, a pulse detector 4 and a controller 5:

[0043] The circulation unit 1 comprises a liquid storage tank 11, a motor oil pump 12, a distributor 13, and a pulse synthesizer 14 which are connected in sequence by pipelines. The liquid storage tank 11 stores circulating liquid. The distributor 13 comprises a liquid inlet and three liquid outlets. The liquid inlet is connected to the motor oil pump 12 through a pipeline. The three liquid outlets are connected to the pulse synthesizer 14. The pulse synthesizer 14 is connected to the liquid storage tank 11 through a pulse synthesis pipeline 15.

[0044] The pipe in the circulation unit 1 is made of TPU material, the circulating liquid in the circulation unit 1 is silicone oil, and the connection at both ends of the TPU pipe is sealed by fixing nuts and anti-silicone oil tape. The TPU pipe has a small damping elasticity, which can reduce the attenuation of the pulse during pipeline transportation.

[0045] In this embodiment, the TPU tube is simulated with an inner diameter of 4 mm and an outer diameter of 6 mm.

[0046] The distributor 13 is also provided with a reflux port, which is connected to the liquid storage tank 11 through a reflux pipe 131.

[0047] The distributor 13 has a cavity inside. After the pumped silicone oil enters the cavity of the distributor 13 , it is distributed into four paths. One path flows back along the reflux port, and the other path flows into the pulse synthesizer 14 along the three liquid outlets.

[0048] The reflux port allows part of the circulating liquid to flow back into the liquid storage tank 11 after the circulating liquid is pumped into the distributor 13 , and the pressure and flow rate of the circulating liquid outputted from the liquid outlet can be adjusted to ensure stable use of the device.

[0049] A reflux valve 132 is provided on the pipeline connecting the reflux port and the liquid storage tank 11, and the reflux valve 132 is used to adjust the flow rate of reflux between the reflux port and the liquid storage tank 11. Adjusting the reflux valve 132 is used to simulate and adjust the peripheral resistance of human blood vessels. Adjusting the size of the reflux valve 132 can determine the descending rate of the descending branch of the pulse wave, thereby improving the simulation accuracy.

[0050] The flow rate of the return valve 132 can be adjusted before the simulation is reproduced, or it can be adjusted after the opening and closing time of the three electromagnetic valves 21.

[0051] The pulse synthesizer 14 includes a synthesis cavity, and the liquid outlet and the pulse synthesis pipeline 15 are both connected to the synthesis cavity. When the electromagnetic valve 21 is opened instantaneously, the output circulating liquid forms a shock wave, and the shock wave converges into the synthesizer. The pulse synthesizer 14 can integrate the impulse of the silicone oil, superimpose and synthesize it, and transmit it to the pulse synthesis pipeline 15, thereby obtaining a reproduced pulse beat at the bionic hand 3. There is a synthesis cavity in the synthesizer, which can play a filtering role, making the output pulse image smoother.

[0052] The size of the filtering effect of the synthetic cavity is related to the size and shape of the synthetic cavity. The shape of the synthetic cavity can include various shapes such as cube, cuboid, cylinder, sphere or ellipsoid. The size of the synthetic cavity can be the volume of distributor 13, 2 times the volume of distributor 13, or 3 times the volume of distributor 13.

[0053] In this embodiment, the pulse synthesizer 14 and the distributor 13 both have rectangular cavities of the same size.

[0054] The execution module 2 includes three solenoid valves 21, which are respectively arranged on the pipelines connecting the three liquid outlets and the pulse synthesizer 14. The three solenoid valves 21 are alternately opened and closed to form a pulse wave on the pulse synthesis pipeline 15;

[0055] The pulse synthesis conduit 15 passes through the radial artery of the bionic hand 3; in this embodiment, the bionic hand 3 includes a bionic hand 3 iron support and artificial skin. The bionic hand 3 iron support is the main support frame of the bionic hand 3, which is used to fix the pulse synthesis conduit 15 that circulates simulated blood and supports the entire bionic hand 3; the artificial skin is used to wrap the bionic hand 3 iron support to provide a touch close to real human skin.

[0056] The pulse detector 4 is arranged at the radial artery of the bionic hand 3, and is used to detect the pulse wave on the pulse synthesis pipeline 15 to form a pulse signal;

[0057] The controller 5 is electrically connected to the pulse detector 4 , the three solenoid valves 21 and the motor oil pump 12 . The controller 5 is used to continuously correct the control parameters of the solenoid valves 21 and the motor oil pump 12 according to the pulse signal of the pulse detector 4 .

[0058] In this embodiment, the motor oil pump 12 is a speed reducer oil pump, and the controller 5 controls the delivery amount of the silicone oil pumped by the motor oil pump 12 through the reduction ratio of the speed reducer oil pump.

[0059] The pulse synthesis pipeline 15 includes a first connecting tube 151, a simulated radial artery pipeline 152, and a second connecting tube 153 which are connected in sequence. The first connecting tube 151 is connected to the pulse synthesizer 14, the second connecting tube 153 is connected to the liquid storage tank 11, the simulated radial artery pipeline 152 is located at the radial artery of the bionic hand 3, the simulated radial artery pipeline 152 is a latex tube, and the first connecting tube 151 and the second connecting tube 153 are TPU tubes.

[0060] The TPU tube has a small damping elasticity, which can reduce the weakening of the pulse during pipeline transmission. The latex tube has good elasticity, and when the synthesized pulse wave is transmitted to the simulated radial artery pipeline 152, the surface of the simulated radial artery pipeline 152 can form obvious pulsation, thereby facilitating the detection of the pulse wave.

[0061] like Figure 2 The reproduction method of the pulse reproduction device based on feedback regulation comprises the following steps:

[0062] (1) Input the pulse data to be reproduced into the controller,

[0063] (2) The controller controls the motor oil pump to start, and the motor oil pump pumps the silicone oil in the liquid storage tank to the distributor, forming a certain pressure in the distributor, and part of the silicone oil flows back to the liquid storage tank through the reflux port of the distributor. Then the three solenoid valves are opened in sequence to form a pulse wave on the pulse synthesis pipeline.

[0064] like Figure 3 , the specific process of step (2) is as follows:

[0065] The three solenoid valves of the execution module are respectively solenoid valve I, solenoid valve II and solenoid valve III. The specific process of step (2) is as follows:

[0066] (2-1) Setting parameters V in the controller f 、T f 、V s 、T AC 、T s 、V C 、T AE 、T C and T, solenoid valve I, solenoid valve II and solenoid valve III are all in the closed state;

[0067] (2-2) The controller controls the motor oil pump to start, and the motor oil pumping volume is V f , the motor oil pump pumps the silicone oil in the storage tank to the distributor,

[0068] (2-3) The controller controls the solenoid valve I to open, T f Start timing and generate the first pulse wave on the pulse synthesizer.

[0069] (2-4)T f Timing is completed, close the solenoid valve I, T AC Start timing and control the motor oil pump delivery volume to V s ,

[0070] (2-5)T AC When the timing is completed, the controller controls the solenoid valve II to open, T s Start timing and generate a second pulse wave on the pulse synthesizer.

[0071] (2-6)T s Timing is completed, close the solenoid valve II, T AE Start timing, control the motor oil pump delivery volume to V C ,

[0072] (2-7)T AE When the timing is completed, the controller controls the solenoid valve III to open, T C Start timing and generate the third pulse wave on the pulse synthesizer.

[0073] (2-8)T c When the timing is completed, the solenoid valve III is closed and T starts timing.

[0074] (2-9)T is completed on time, completed,

[0075] (3) The pulse detector detects the pulse wave signal and transmits it to the controller.

[0076] (4) The controller compares the obtained pulse signal with the pulse data to be reproduced, and corrects the control parameters of the solenoid valve and the motor oil pump.

[0077] (5) Reproduce the accurate pulse.

[0078] Parameter V set in the controller f 、T f 、V s 、T AC 、T s 、V C 、T AE 、T C The meanings of and T, and the characteristics of the main pulse wave are as follows:

[0079] Table 1. Characteristics of pulse waves affected by device parameters

[0080]

[0081] In step (4), the comparison and correction process of parameters is based on T f For example, when the appearance time of the main wave peak of the pulse wave signal detected by the pulse detector is less than the appearance time of the main wave peak of the pulse data to be reproduced, the controller controls to increase T f parameters and vice versa.

[0082] Parameter T f 、T AC 、T s 、T AE 、T C The increase or decrease values ​​of T can be 5ms, 10ms, 20ms, and 30ms.

[0083] The correction process of other parameters can refer to T f Correction process.

[0084] Treat the pulse data of the recurrence as Figure 4 , for example, the opening time T of different solenoid valves I f , the impact is as follows:

[0085] Table 1 Different opening times T of solenoid valve 1 f Table of parameters corresponding to characteristic points of reproduced pulse wave

[0086] Waveform / Occurrence time Main wave peak Tidal wave crest Heavy Stroke Wave Peak Solenoid valve I opens for 10ms 0.030s 0.110s 0.250s Solenoid valve I opens for 15ms 0.070s 0.130s 0.250s Solenoid valve I opens for 20ms 0.095s none 0.250s Solenoid valve I opens for 25ms 0.120s 0.155s 0.260s

[0087] The specific pulse wave main wave peak appearance time diagram is as shown in the attached Figure 5 shown.

[0088] By adjusting the solenoid valve I opening time T f The time of occurrence of the characteristic point of the peak of the main wave to be reproduced can be made to match the pulse data to be reproduced. Figure 6 shown.

[0089] The interval time T between different solenoid valves I and II AC , that is, the duration of the first closing of all solenoid valves has the following effects:

[0090] Table 2 Different time T for closing all solenoid valves for the first time AC , the parameter table of the corresponding characteristic points of the reproduced pulse wave

[0091]

[0092]

[0093] The first closing of all solenoid valves controls the time when the tidal wave peak appears. Figure 7 shown.

[0094] Adjust the second closing time T of all solenoid valves AE Then, the appearance time of all feature points can be made to match the pulse data to be reproduced, such as Figure 8 .

[0095] Finally, to reproduce the Figure 1 The pulse data of the controller, the control parameters are as follows:

[0096] parameter Parameter Value <![CDATA[V f ]]> 90% motor speed (full speed 1350r / min) <![CDATA[T f ]]> 35ms <![CDATA[V s ]]> 85% motor speed (full speed 1350r / min) <![CDATA[T AC ]]> 80ms <![CDATA[T s ]]> 30ms <![CDATA[V C ]]> 60% motor speed (full speed 1350r / min) <![CDATA[T AE ]]> 190ms <![CDATA[T C ]]> 25ms T 460ms

[0097] The specific comparison between the reproduced pulse data and the initial pulse data is as follows: Fig. 9 shown.

[0098] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "include..." or "comprise..." do not exclude the existence of other elements in the process, method, article or terminal device including the elements. In addition, in this article, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself.

[0099] Although the above embodiments have been described, once those skilled in the art know the basic creative concepts, they can make additional changes and modifications to these embodiments. Therefore, the above description is only an embodiment of the present invention and does not limit the patent protection scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A pulse reproduction device based on feedback regulation, characterized in that: include: A circulation unit, the circulation unit comprising a liquid storage tank, a motor oil pump, a distributor, and a pulse synthesizer connected in sequence by pipelines, the liquid storage tank stores circulating liquid, the distributor comprises a liquid inlet and three liquid outlets, the liquid inlet is connected to the motor oil pump through a pipeline, the three liquid outlets are connected to the pulse synthesizer, and the pulse synthesizer is connected to the liquid storage tank through a pulse synthesis pipeline; An execution module, the execution module includes three solenoid valves, the three solenoid valves are respectively arranged on the pipelines connected to the three liquid outlets and the pulse synthesizer, and the three solenoid valves are alternately opened and closed to form a pulse wave on the pulse synthesis pipeline; Bionic hand, the pulse synthesis pipeline passes through the radial artery of the bionic hand; A pulse detector, which is arranged at the radial artery of the bionic hand and is used to detect the pulse wave on the pulse synthesis pipeline to form a pulse signal; A controller, the controller is electrically connected to the pulse detector, the three solenoid valves and the motor oil pump, and the controller is used to continuously correct the control parameters of the solenoid valves and the motor oil pump according to the pulse signal of the pulse detector; The pulse synthesizer comprises a synthesis cavity, and the liquid outlet and the pulse synthesis pipeline are both connected to the synthesis cavity; The pulse synthesis pipeline comprises a first connecting tube, a simulated radial artery pipeline, and a second connecting tube which are connected in sequence, the first connecting tube is connected to the pulse synthesizer, the second connecting tube is connected to the liquid storage tank, the simulated radial artery pipeline is located at the radial artery of the bionic hand, the simulated radial artery pipeline is a latex tube, and the first connecting tube and the second connecting tube are TPU tubes; The pipe in the circulation unit is made of TPU material, the circulating liquid in the circulation unit is silicone oil, and the connection between the two ends of the TPU pipe is sealed by fixing nuts and anti-silicone oil tape; The distributor is also provided with a reflux port, which is connected to the liquid storage tank through a reflux pipe; A reflux valve is provided on the pipeline connecting the reflux port and the liquid storage tank, and the reflux valve is used to adjust the flow rate of reflux between the reflux port and the liquid storage tank; The reproduction method of the pulse reproduction device based on feedback regulation comprises the following steps: (1) inputting pulse data to be reproduced into the controller; (2) The controller controls the motor oil pump to start, and then the three solenoid valves are opened in sequence to form a pulse wave on the pulse synthesis pipeline; (3) The pulse detector detects a pulse wave signal and transmits it to the controller; (4) The controller compares the obtained pulse signal with the pulse data to be reproduced, corrects the control parameters of the solenoid valve and the motor oil pump, and repeats steps (2)-(4); (5) Reproduce the accurate pulse wave.

2. The pulse reproduction device based on feedback regulation as claimed in claim 1, characterized in that: The three solenoid valves of the execution module are respectively solenoid valve I, solenoid valve II and solenoid valve III. The specific process of step (2) is as follows: (2-1) Setting parameters V in the controller f , T f 、V s , T AC , T s 、V C , T AE , T C and T, solenoid valve I, solenoid valve II and solenoid valve III are all in the closed state; (2-2) The controller controls the motor oil pump to start, and the motor oil pumping volume is V f , the motor oil pump pumps the delivery liquid in the liquid storage tank to the distributor; (2-3) The controller controls the solenoid valve I to open, T f Start timing and form the first pulse wave on the pulse synthesizer; (2-4)T f Timing is completed, close the solenoid valve I, T AC Start timing and control the motor oil pump delivery volume to V s ; (2-5)T AC When the timing is completed, the controller controls the solenoid valve II to open, T s Start timing and form a second pulse wave on the pulse synthesizer; (2-6)T s Timing is completed, close the solenoid valve II, T AE Start timing, control the motor oil pump delivery volume to V C ; (2-7)T AE When the timing is completed, the controller controls the solenoid valve III to open, T C Start timing and form a third pulse wave on the pulse synthesizer; (2-8)T c When the timing is completed, the solenoid valve III is closed and T starts timing; (2-9)T is completed on time.

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