CN209899845U - Gravity environment load test system - Google Patents

Abstract

The utility model provides a gravity environment load test system, include: upright inclined test bed: comprises a base and a bed body which can be inclined relative to the base, wherein the bed body is used for supporting a testee; a monitoring device: the bed body parameter acquisition unit is used for acquiring the inclination angle of the bed body and the pressure in the negative pressure cylinder, and the physiological parameter acquisition unit is used for acquiring the physiological parameters of a subject; a negative pressure cylinder: the bed body is detachably arranged on the bed body and used for controlling the lower half body of a testee to be in a vacuum state, and the negative pressure cylinder is connected with the bed body parameter acquisition unit so as to transmit pressure data in the negative pressure cylinder. The utility model discloses when gravity environment load test, the regulation of carrying out physiological parameter data acquisition, vertical tilt motion and negative pressure section of thick bamboo atmospheric pressure in real time synchronization, the operation is simpler, safety.

Description

Gravity environment load test system

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a gravity environment load test system.

Background

The gravity environment load test is a strong and effective stress factor for the cardiovascular system, and is an ideal non-invasive research method for the hemodynamic change of human body under special environment. The gravity environment load test simulates positive acceleration (G < + >), particularly combines passive upright posture change (HUT), can qualitatively and quantitatively reflect the regulation and control capability of a circulatory system, diagnoses the functional state of heart and cerebral vessels and the regulation capability of nerve and body fluid, and is a load test method with good human physiological effect.

The gravitational environment load test system is established through passive vertical body position change and applying certain amount of negative pressure environment below waist, and is used in monitoring the clinical symptoms, electrocardiogram, blood pressure, electroencephalogram, blood oxygen saturation, transcranial Doppler, echocardiogram, myocardial perfusion, etc. of the testee. Especially the pressure gradient of the negative pressure environment can generate stable and quantitative load to the human body, and can evaluate the spontaneous baroreceptor-heart rate reflex reactivity under the gravity stress, thereby realizing the medical diagnosis of the cardiovascular and cerebrovascular diseases.

Currently, a subject wears negative pressure trousers and attaches an electrocardio electrode, then lies on a vertical bed, changes to a horizontal position and then ties on a blood pressure cuff and a pulse sensor. When the heart rate is close to the rest heart rate, recording 2 times of electrocardio, blood pressure, cerebral blood oxygen saturation and pulse chart as comparison values. After the pressure in the negative pressure trousers is minus 4.0kpa (-30mmHg) for 2 minutes, the bed body is changed to a 75-degree standing position, and the standing time is 20 minutes. The pressure in the negative pressure trousers is always kept to be 4.0kpa at the vertical position. Recording blood pressure, pulse chart and cerebral blood oxygen saturation at the time of lying position, negative pressure for 1min, standing position for instant, 2, 4, 6, 8, 10, 12, 14, 16, 18 and 20 min. Electrocardiograms were recorded continuously throughout the experiment. If the tested person in the standing position has obvious vegetative nerve reaction and/or obvious reduction of heart rate and blood pressure, the experiment is immediately stopped.

Utility model people find, there are following problems in current slope test of standing vertically at least:

the testee wears the negative pressure trousers, which is a troublesome and poor experience mode, and meanwhile, if the negative pressure trousers are shared by a plurality of people, the sanitation and the disinfection do not reach the standard;

because of the lack of a unified monitoring system, various physiological parameter acquisition devices (electrocardiogram monitoring, blood pressure monitoring, electroencephalogram monitoring, cerebral blood oxygen saturation monitoring, transcranial Doppler monitoring, echocardiography, nuclide myocardial perfusion imaging and the like) and the upright inclined test bed need to be operated independently, a tester needs to observe the data of each physiological parameter acquisition device and manually operate the upright inclined test bed, and the operation is very inconvenient;

3. because the acquisition and display of various physiological parameters are lagged, generally 3-5 seconds, and the time of positive signs of a subject is short, generally 3 seconds, when the positive signs of the subject appear, the physiological parameters may not have the parameters of the positive signs, so that medical staff cannot timely record the real physiological parameters of the subject when the positive signs appear;

4. in the gravity environmental load test, if a testee has physical discomfort (for example, positive signs), and needs to be rescued, the traditional way is to not only drop the upright inclined test bed back to the horizontal position, but also unload the pressure of the negative pressure trousers, which is an inefficient and messy process for an operator. Therefore, the patient is not convenient to be timely treated.

Therefore, an integrated gravity environment load testing system which is automatically controlled and convenient for timely curing the tested person is needed.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a gravity environment load test system to solve the angle of the unable automatic control bed body and simultaneously take notes physiological parameter in the current gravity environment load test, and the experimenter appears the health in good time, can't develop the problem of effective quick treatment.

In order to achieve the above object, the utility model discloses a gravity environment load test system, include:

upright inclined test bed: comprises a base and a bed body which can be inclined relative to the base and is used for supporting a subject;

a monitoring device: the bed body parameter acquisition unit is used for acquiring the inclination angle of the bed body and the pressure in the negative pressure cylinder, and the physiological parameter acquisition unit is used for acquiring the physiological parameters of a subject;

a negative pressure cylinder: the bed body is detachably arranged on the bed body and used for controlling the lower half body of a testee to be in a vacuum state, and the negative pressure cylinder is connected with the bed body parameter acquisition unit so as to transmit pressure data in the negative pressure cylinder.

Optionally, the negative pressure cylinder includes a cylinder body, a sealing device and an air pressure control device, the sealing device is installed at an opening of the negative pressure cylinder to seal the cylinder body, and the air pressure control device is installed in the cylinder body to control pressure variation in the cylinder body.

Optionally, the sealing device includes a sealing bag and a sealing control assembly, the sealing control assembly includes a first sensor and a first air pressure adjusting device, the first sensor is connected with the first air pressure adjusting device, and the first air pressure adjusting device adjusts the air pressure in the sealing bag according to the sensing data of the first sensor.

Optionally, the air pressure control device includes a second sensor and a second air pressure adjusting device, the second sensor is connected to the second air pressure adjusting device, and the second air pressure adjusting device adjusts the air pressure in the cylinder according to data of the second sensor.

Optionally, the barrel further comprises a back plate adjusting mechanism, the back plate adjusting mechanism comprises a back plate adjusting motor and a back plate, and the back plate adjusting motor controls the back plate to move from the opening position of the barrel to the bottom of the barrel along the extending direction of the barrel so as to convey the legs of the subject into the barrel.

Optionally, the bottom of the barrel is further provided with a pedal adjusting mechanism, the pedal adjusting mechanism comprises a pedal adjusting motor and a pedal, and the pedal adjusting motor controls the pedal to ascend and descend along the direction of the barrel opening at the bottom of the barrel so as to support the feet of the subject and adjust the height of the subject in the barrel.

Optionally, the sealing bag comprises a plurality of air bags, and the plurality of air bags are distributed along the inner wall of the opening of the cylinder body to form mutually arranged folded air bag rings.

Optionally, including tilting device and rotary device on the base, rotary device installs the one end at the base to be connected with the one end of the bed body, the bed body with rotary device inclines as the axle, tilting device includes the slope motor, the slope motor is personally submitted angle fixed mounting on the base with the level to towards rotary device one side, push rod one side and the bed body of slope motor are connected, motor cylinder one side of slope motor is fixed on the base, and the push rod stretches out the motor bucket, promotes the bed body with rotary device is the rotation of axle so that the bed body inclines for the base.

Optionally, the base is further provided with a lifting device, the lifting device comprises a lifting platform, a lifting motor and a third sensor, the lifting platform supports the bed body to lift up and down, the third sensor is arranged on the lifting platform and rises and falls along with the lifting platform to measure the moving height of the lifting platform, and the third sensor is connected with the bed body parameter acquisition unit.

Optionally, the bed device further comprises a display device, wherein the display device is connected with the main control unit to display the obtained bed parameters and the physiological parameters of the subject

The utility model has the advantages that: the utility model provides a gravity environment load test system, it is including upright slope test bed and negative pressure section of thick bamboo, the negative pressure section of thick bamboo is installed on the bed body of self-supporting slope test bed, and be connected communication with the monitoring devices on the upright slope test bed, last physiological parameter acquisition unit and the bed body parameter acquisition unit of including of monitoring devices, can measure the inclination of the bed body and the physiological parameter of experimenter simultaneously, according to the health of the experimenter of monitoring, the inclination of the synchronous control bed body, when physiological parameter appears unusually, the control bed body resumes initial condition so that in time salvage the experimenter, this gravity environment load test system of whole process accessible is automatic to be accomplished. Simultaneously this application still includes a negative pressure section of thick bamboo, also is connected negative pressure section of thick bamboo's monitoring devices with the master control unit to the operating condition of a synchronous control negative pressure section of thick bamboo lets the low limbs of testee under negative pressure state through a negative pressure section of thick bamboo, and the health physiological parameter who acquires is more accurate, more does benefit to medical diagnosis.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly described below. It is understood that the drawings in the following description are merely exemplary of the invention and that other drawings may be derived by those skilled in the art without inventive exercise.

Fig. 1 is a combination diagram of a gravity environment load test system according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an inclined state of a gravity environment load test system according to an embodiment of the present invention;

fig. 3 is a block diagram of a gravity environment load test system provided in an embodiment of the present invention;

fig. 4 is a perspective view of a negative pressure cylinder provided in the embodiment of the present invention;

fig. 5 is a cross-sectional view of a negative pressure cylinder provided in an embodiment of the present invention;

fig. 6 is a side view of a negative pressure cylinder provided in an embodiment of the present invention;

FIG. 7 is a simulated structure view of a waist seal capsule of a medical lower body negative pressure cylinder according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a waist sealing cuff of a medical lower body negative pressure cylinder according to an embodiment of the present invention.

Fig. 9 is a schematic cross-sectional view of an overall gravity environment load testing system according to an embodiment of the present invention;

fig. 10 is a schematic side view of a gravity environment load test system according to an embodiment of the present invention;

fig. 11 is a schematic view of a display device of a gravity environment load test system according to an embodiment of the present invention.

Detailed Description

Embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. Based on these embodiments, all other embodiments obtained by a person of ordinary skill in the art without any creative effort fall within the protection scope of the present invention.

Fig. 1-3 illustrate a gravity environment load test system according to the present invention, comprising:

upright inclined test bed 100: comprises a base 110 and a bed 120 which can be inclined relative to the base, wherein the bed 120 is used for supporting a subject;

the monitoring device 200: the bed body parameter collecting unit 230 is used for collecting the inclination angle of the bed body 120 and the pressure in the negative pressure cylinder 300, and the physiological parameter collecting unit 220 is used for collecting the physiological parameters of a subject;

a negative pressure cylinder 300: the negative pressure cylinder 300 is detachably mounted on the bed body 120 and used for controlling the lower half of the subject to be in a vacuum state, and is connected with the bed body parameter acquisition unit 230 so as to transmit pressure data in the negative pressure cylinder 300.

The utility model discloses an automatic user state who acquires bed body 120 of monitoring devices 200, and the human physiological parameter of automatic control physiological parameter acquisition unit 220 collection, be provided with a negative pressure section of thick bamboo simultaneously, the lower limbs of measurable quantity subject are at the physiological parameter under the negative pressure state, and the gesture according to the physiological parameter automatic adjustment bed body 120 of collection in real time, the safety of guarantee subject test, abnormal conditions appears in the subject test process, the posture of the automatic adjustment bed body 120, and can in time accurately acquire physiological parameter, the operation is simple and convenient, the degree of automation is high.

In the present application, the physiological parameter collecting unit 220 includes one or more physiological collecting interfaces, which in one embodiment includes one or more of electrocardiogram monitoring, blood pressure monitoring, electroencephalogram monitoring, cerebral blood oxygen saturation monitoring, transcranial doppler monitoring, echocardiogram, nuclide myocardial perfusion imaging, etc., the physiological parameter collecting unit 220 may be installed at any position of the bed body 120 or the base 110, and since the subject is lying on the bed body 120, it is preferable that the collecting port of the physiological parameter collecting unit 220 is installed near the bed body 120 to facilitate collecting relevant physiological parameters of the human body through the collecting port.

In the present application, the negative pressure cylinder 300 is a sealable vacuum-enabled device, which houses the lower limbs of the subject in the negative pressure cylinder 300, and under the vacuum state, changes the cardiac load of the subject, observes the physiological parameters of the subject, and performs diagnosis. In order to ensure the accurate measurement data of the negative pressure cylinder 300, it is necessary to ensure the tightness of the negative pressure cylinder 300, and therefore, in an embodiment of the present application, referring to fig. 4, the negative pressure cylinder 300 includes a cylinder body 310, a sealing device 320, and an air pressure control device 330, a fixed connection plate 360 is disposed at the position of the cylinder body 310, and the whole negative pressure cylinder 300 is fixed on the bed 120 through the fixed connection plate 360. The fixing mode may be a sliding groove mode or a bolt fixing mode, as long as the negative pressure cylinder 300 can be fixed on the bed body 120 and can not fall off along with the inclination of the bed body 120. In this embodiment, the sealing device 320 is installed at an opening position of the negative pressure cylinder 300 to seal the cylinder body 310, and the air pressure control device 320 is installed in the cylinder body 310 to control pressure variation in the cylinder body 310.

In an embodiment, referring to fig. 5-6, the sealing device 320 includes a sealing bag 321 and a sealing control assembly 322, the sealing control assembly 322 includes a first sensor 3221 and a first air pressure adjusting device 3222, the first sensor 3221 is connected to the first air pressure adjusting device 3222, and the first air pressure adjusting device 3222 adjusts air pressure in the sealing bag according to sensing data of the first sensor 3221. In one embodiment, the first sensor 3221 is installed at the position of the sealing bag 321, senses whether the lower limb of the subject is accommodated in the cylinder 300, and controls the first air pressure adjusting device 3222 to adjust the sealing bag 321 when the predetermined position of the subject accommodated in the cylinder 300 is sensed, so that the sealing bag 321 is inflated and tightly attached to the subject, and the inside of the cylinder 310 is in a sealed state.

The first pressure regulating device 3222 includes a positive pressure sensor (not shown) and an air pump (not shown), and the air pump inflates or deflates the air bag 321 according to the data in the air bag 321 monitored by the positive pressure sensor. Further, referring to fig. 4, a rotating sleeve 3211 and a rotating handle 3212 are further disposed at a position where the capsule 321 contacts the subject, and the rotating handle 3212 is connected to the rotating sleeve 3211 to control the rotating sleeve 3211 to rotate, so that the rotating sleeve 3211 is closer to the subject under the extrusion of the capsule 321, and the air tightness of the cylinder 310 is stronger.

In one embodiment, the sealing bag 321 includes a plurality of air bags distributed along the inner wall of the opening of the cylinder to form mutually arranged folded air bag rings. Fig. 7 is a simulated structural view of a sealing cuff 321 of a medical lower body negative pressure cartridge according to another embodiment of the present invention. As shown in the figure, the sealing bag 321 is distributed along the inner wall of the cylindrical structure, when the negative pressure test is started, the sealing bag 321 inflates and expands, after inflation, the rotating handle 3212 is rotated to rotate the sealing bag 321 to fix the rotating sleeve 3211 to fill the gap between the mouth of the cylinder body 310 and the waist of the subject, and the sealing performance of the cylinder body 310 is maintained under the condition of negative pressure in the cylinder. Typically, the distance between the upper and lower edges of the balloon, which is the sealed bladder 321, is 90-100 mm. In addition, the number of the air cells of the sealing capsule 321 in the length direction of the cylinder body 310 includes, but is not limited to, one. Preferably, the material of the balloon is silicone rubber. Typically, when the pressure in the cylinder body 310 is 50mmHg and the sealing bag 321 is pressurized and expanded until the pressure of the air bag is 30mmHg, the residual pressure in the negative pressure cylinder is less than or equal to 15mmHg after the cylinder is parked for 40 minutes.

Fig. 8 shows a schematic structural view of the sealing cuff 321 of the medical lower body negative pressure cylinder according to another embodiment of the present invention. As shown, the sealing bladder 321 may be composed of a plurality of air cells in the cross-sectional direction of the cylindrical structure of the cylinder 310. The plurality of air cells are distributed along the inner wall of the cylindrical structure of the cylinder body in the sectional direction of the cylindrical structure of the cylinder body 310, and are pressed against each other when inflated. Typically, each cell is in the shape of a uniform ellipse, sector or rectangle, the length of the major axis of the ellipse, the sides of the sector or the long sides of the rectangle is about 50-150mm, and the number of cells is about 10-30. The end A of each air bag covers and extrudes the end B of the front air bag, and the end B of each air bag is simultaneously covered and extruded by the end A of the rear air bag, so that a dense and orderly-arranged folded air bag ring is formed on the inner wall of the annular cylinder, and then each air bag is extruded with the body through rotation to achieve the sealing effect. Preferably, the number of the balloon rings composed of a plurality of balloons includes, but is not limited to, one in the tube length direction of the tube body 310. The utility model discloses a monolithic gasbag of damaged department can conveniently be changed to this embodiment, is favorable to the maintenance of barrel.

The embodiment of the utility model provides a medical lower part of the body negative pressure section of thick bamboo, gasbag and sealed mode design through sealed bag 321 can realize good sealing performance, guarantee the negative pressure stability in the medical lower part of the body negative pressure section of thick bamboo and the precision of experimenter physiological parameter to improve the efficiency and the degree of accuracy of lower part of the body negative pressure measurement diagnosis vasovagal syncope.

In an embodiment, the air pressure control device 330 includes a second sensor 331 and a second air pressure adjusting device 332, the second sensor 331 is connected to the second air pressure adjusting device 332, and the second air pressure adjusting device 332 adjusts the air pressure in the cylinder 310 according to data of the second sensor 331.

In one embodiment, the second air pressure adjusting device 332 includes a suction pump for sucking air in the cylinder 310 to make the cylinder 310 reach a negative pressure state, so the second sensor in this embodiment is a negative pressure sensor for monitoring whether the air pressure of the cylinder 310 in the sealed state reaches a preset negative pressure state.

In this embodiment, the first sensor 3221 and the second sensor 331 and the first air pressure adjusting device 3222 and the second air pressure adjusting device 332 described above may be connected to the main control unit 210, and the main control unit 210 receives data from the first sensor 3221 and the second sensor 331 to control the operation of the first air pressure adjusting device 3222 and the second air pressure adjusting device 332, respectively. Specifically, when it is monitored that a subject enters the cylinder 310 and reaches a preset position, the air pump of the first air pressure adjusting device 3222 is controlled to operate to inflate the sealed bag 321, meanwhile, the pressure of the sealed bag 321 is detected by the positive pressure sensor, and when the pressure of the sealed bag 321 reaches the preset value, inflation is stopped. After the sealing bag 321 is inflated, the second air pressure adjusting device 332 is started to suck air from the cylinder 310, meanwhile, the negative pressure value in the cylinder 310 is detected in real time through the second pressure sensor 332 connected with the sealing bag, the acquired value is compared with a preset value, when the difference value is large, the vortex in the second air pressure adjusting device 332 runs at a high speed, when the negative pressure value is close to the preset value, the vortex fan runs slowly and stably close to the preset value, and when the negative pressure value reaches the preset value, the fan is kept running at a constant speed; if the negative pressure value is higher than the preset value, the adjusting solenoid valve of the second air pressure adjusting device 332 can be opened to deflate, so that the air pressure is increased, and the rotating speed of the fan is adjusted by continuously acquiring the negative pressure value, so that the negative pressure value is always equal to the preset value, and the purpose of constant pressure is achieved. After the test is finished, stopping the operation of the vortex fan to return the pressure value in the cylinder body 310 to the normal pressure (atmospheric pressure); the air pump in the second air pressure adjusting device 332 is controlled to run reversely to pump the air in the sealed bag 321, and the air bag is emptied, so that the subject leaves the cylinder 310. If the utility model discloses use simultaneously with the slope test system of standing vertically, so the utility model discloses an operation is started working after bed body 120 reaches predetermined angle value.

Specifically, in an embodiment, barrel 310 adopts toughened glass, has not only guaranteed that barrel 310's structural strength can also be in the utility model discloses the real-time condition of the lower part of the body of the examinee in the barrel is observed through glass to the during operation, and barrel 310 can also be made by other tempering, transparent material.

Specifically, the negative pressure range of the cylinder is 50-65mmHg, and the physiological parameters such as blood pressure, heart rate and the like of a subject can be changed due to the negative hypothermia. Typically, when the negative pressure in the cylinder reaches 65mmHg for pressure relief, the side 12 of the cylinder made of toughened glass has no permanent deformation. Typically, the airtight property in the sealed cylinder 102 made of toughened glass is about 35mmHg after the cylinder is parked for 40 minutes when the pressure in the cylinder is 50 mmHg.

In one embodiment, the barrel body 310 further comprises a back plate adjusting mechanism 340, the back plate adjusting mechanism 340 comprises a back plate adjusting motor 341 and a back plate 342, and the back plate adjusting motor 341 controls the back plate 342 to move from the opening position of the barrel body to the bottom of the barrel body 310 along the extending direction of the barrel body 310 to convey the leg of the subject into the barrel body. When in use, the backboard 342 moves from the inside of the cylinder body 310 to the outside of the cylinder body 310 under the control of the backboard adjusting motor 341, the subject puts the legs on the backboard 342, the two legs are fixed by the binding belts 343, and the backboard adjusting motor 341 transports the legs of the subject into the cylinder body 310.

Further, the bottom of the cylinder 310 is also provided with a pedal adjusting mechanism 350, the pedal adjusting mechanism comprises a pedal adjusting motor 351 and a pedal 352, the pedal adjusting motor 351 controls the pedal 352 to ascend and descend along the direction of the cylinder opening at the bottom position of the cylinder 310 so as to support the feet of the subject and adjust the height of the subject in the cylinder. Preferably, the pedal 352 is a flexible structure to reduce the discomfort of the vortex fan to the subject caused by vibration during suction, and to maintain the balance of the subject during the negative pressure test.

In an embodiment, referring to fig. 9, the base 110 includes a tilting device 130 and a rotating device 140, the rotating device 130 is installed at one end of the base and connected to one end of the bed 120, the bed 120 tilts around the rotating device 130, the tilting device 130 includes a tilting motor 132 and a tilting sensor 131, the tilting motor is fixedly installed on the base at an angle to the horizontal plane and faces one side of the rotating device, one side of a push rod of the tilting motor is connected to the bed, one side of a motor cylinder of the tilting motor is fixed on the base, the push rod extends out of the motor cylinder, and the bed 120 is pushed to rotate around the rotating device to tilt the bed relative to the base 110. Further, the rotating device 140 is a hinge structure, and a hinge seat and a rotating shaft are respectively installed on the base 110 and the bed body 120, so that the bed body 120 rotates relative to the base 110. And the movement of the bed 120 is controlled by the tilting device 130, in which the tilting motor 132 is connected to the main control unit 210 to control the tilting of the bed 120, and the tilt sensor 131 is connected to the bed collecting unit 230 to detect the tilting angle of the bed 120.

In an embodiment, the base 110 further includes a lifting device 150, the lifting device includes a lifting table 151, a lifting motor 152, and a third sensor 153, the lifting table 151 supports the bed body 120 to move up and down, the third sensor 153 is disposed on the lifting table 151 and ascends and descends along with the lifting table 151 to measure the moving height of the lifting table, and the third sensor 153 is connected to the bed body parameter collecting unit 230.

In an embodiment, referring to fig. 10-11, a plurality of output interfaces 240 are further disposed on the base 110 and the bed body 120, and the output interfaces are connected to the main control unit 210 so as to output related data or connect with each other for the purpose of collecting and processing signals. In an embodiment, a display device 400 is further included, and the display device 400 is connected to the output interface 240 to display the acquired bed parameters and the physiological parameters of the subject.

The utility model discloses when gravity environment load test, based on the physiological parameter data of the testee that obtains, when judging that the testee positive sign appears, generate the bed body gesture and negative pressure section of thick bamboo pressure intensity that correspond, adjust control command and adjust the bed body to the rescue position in scheduled time, negative pressure section of thick bamboo pressure intensity uninstalls predetermined parameter value, adjusts the testee position to the head low level simultaneously, has reduced the risk of suing and labouring of testee. The utility model discloses can carry out the regulation of physiological parameter data acquisition, vertical tilt motion and negative pressure section of thick bamboo atmospheric pressure in real time in step.

The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims (10)

1. A gravitational environment stress testing system, comprising:

upright inclined test bed: comprises a base and a bed body which can be inclined relative to the base and is used for supporting a subject;

a monitoring device: the bed body parameter acquisition unit is used for acquiring the inclination angle of the bed body and the pressure in the negative pressure cylinder, and the physiological parameter acquisition unit is used for acquiring the physiological parameters of a subject;

a negative pressure cylinder: the bed body is detachably arranged on the bed body and used for controlling the lower half body of a testee to be in a vacuum state, and the negative pressure cylinder is connected with the bed body parameter acquisition unit so as to transmit pressure data in the negative pressure cylinder.

2. The system for testing environmental load according to claim 1, wherein the negative pressure cylinder comprises a cylinder body, a sealing device and a pneumatic control device, the sealing device is installed at an opening position of the negative pressure cylinder to seal the cylinder body, and the pneumatic control device is installed in the cylinder body to control pressure variation in the cylinder body.

3. The system for testing environmental load according to claim 2, wherein said sealing device comprises a sealing bladder and a sealing control assembly, said sealing control assembly comprises a first sensor and a first air pressure regulating device, said first sensor is connected to said first air pressure regulating device, and said first air pressure regulating device regulates air pressure in said sealing bladder according to sensing data of said first sensor.

4. The system according to claim 2, wherein the air pressure control device comprises a second sensor and a second air pressure adjusting device, the second sensor is connected with the second air pressure adjusting device, and the second air pressure adjusting device adjusts the air pressure in the cylinder according to data of the second sensor.

5. The system of claim 2, further comprising a back plate adjustment mechanism within the barrel, the back plate adjustment mechanism comprising a back plate adjustment motor and a back plate, the back plate adjustment motor controlling the back plate to move along the extension direction of the barrel from the open position of the barrel to the bottom of the barrel to transport the leg of the subject into the barrel.

6. The gravitational environment load testing system of claim 2, wherein the bottom of the cylinder is further provided with a pedal adjusting mechanism, the pedal adjusting mechanism comprises a pedal adjusting motor and a pedal, and the pedal adjusting motor controls the pedal to ascend and descend along the direction of the cylinder opening at the bottom position of the cylinder so as to support the feet of the subject and adjust the height of the subject in the cylinder.

7. The system for testing the environmental load according to claim 3, wherein the sealed bag comprises a plurality of air bags, and the air bags are distributed along the inner wall of the opening of the cylinder body to form mutually-arranged folded air bag rings.

8. The gravitational environmental load testing system according to claim 1, wherein said base comprises a tilting device and a rotating device, said rotating device is mounted at one end of the base and connected to one end of the bed, the bed tilts around said rotating device, said tilting device comprises a tilting motor, said tilting motor is fixedly mounted on the base at an angle to the horizontal plane and faces to one side of the rotating device, one side of a push rod of said tilting motor is connected to the bed, one side of a motor cylinder of said tilting motor is fixed on the base, the push rod extends out of the motor cylinder, and said bed is pushed to rotate around said rotating device to tilt the bed relative to the base.

9. The gravitational environment load testing system of claim 1, further comprising a lifting device on the base, wherein the lifting device comprises a lifting table, a lifting motor and a third sensor, the lifting table supports the bed body to lift up and down, the third sensor is disposed on the lifting table and rises and falls along with the lifting table to measure the moving height of the lifting table, and the third sensor is connected to the bed body parameter collecting unit.

10. The gravitational environment stress testing system of claim 1, further comprising a display device, wherein the display device is connected to the main control unit to display the obtained bed parameters and physiological parameters of the subject.

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