A device for simulating vital signs

Abstract

The application provides a device for simulating life characteristics, comprising a vibrating air bag, an elastic air bag and a power mechanism; the power mechanism comprises a push plate, the push plate is in abutment with the elastic air bag, and the push plate can reciprocate to push the elastic air bag; the elastic air bag is in fluid communication with the vibrating air bag; and the vibrating air bag is used for simulating the action during heartbeat or breathing. By adopting the vibrating air bag, the elastic air bag and the power mechanism, the action of heartbeat during human breathing can be reliably simulated, the device is suitable for function detection of different sleep monitoring mattress, and the detection efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection equipment, in particular to a device for simulating vital signs. BACKGROUND

[0002] At present, the aging degree of China is rising, and the demand for intelligent sleep monitoring mattress is also increasing. The intelligent sleep monitoring mattress can effectively solve the safety monitoring problem of home-based care for the elderly, especially empty nest and single elderly. Specifically, the intelligent sleep monitoring mattress has the functions of breathing and heartbeat monitoring. By monitoring the breathing or heartbeat characteristics of the elderly, it can determine whether the vital signs of the elderly are normal, and realize rapid and effective monitoring.

[0003] However, with the batch production of intelligent sleep monitoring mattress, how to efficiently and reliably test the performance of each intelligent sleep monitoring mattress is the main problem to be solved at present. SUMMARY

[0004] The purpose of the present application is to provide a device for simulating vital signs, which can simulate the heartbeat characteristics of the human body, facilitate the performance test of the sleep monitoring mattress, and improve the test efficiency.

[0005] To achieve the above purpose, in the first aspect, the present application provides a device for simulating vital signs, comprising a vibrating air bag, an elastic air bag and a power mechanism. The power mechanism comprises a push plate, the push plate is in abutment with the elastic air bag, and the push plate can reciprocate to push the elastic air bag. The elastic air bag is in fluid communication with the vibrating air bag. The vibrating air bag is used to simulate the action of heartbeat or breathing.

[0006] The present application has the advantages that by using the vibrating air bag, the elastic air bag and the power mechanism, the action of heartbeat during breathing can be reliably simulated, which is suitable for function detection of different sleep monitoring mattresses, and improves the detection efficiency.

[0007] Optionally, the power mechanism comprises a crank slider mechanism, a motor and a sliding frame; the crank slider mechanism comprises a frame, a first hinge, a crank, a second hinge, a connecting rod, a third hinge and a push rod connected in sequence; wherein the motor drives the crank to rotate, the push rod is connected with the push plate, the push rod is slidably arranged on the sliding frame, and the crank drives the push rod to reciprocatingly move left and right through the connecting rod; the crank and the frame form a rotary pair through the first hinge, the crank and the connecting rod form a rotary pair through the second hinge, the connecting rod and the push rod form a rotary pair through the third hinge, and the push rod and the frame form a moving pair through the sliding frame. Its beneficial effect lies in that the rotary pair is formed through the first hinge, the crank, the second hinge, the connecting rod and the third hinge, and the push rod is slidably arranged on the sliding frame, so that the push rod can periodically stretch and contract, the push rod periodically extrudes the elastic air bag to make the vibration air bag vibrate, thereby simulating the action signal during heartbeat or respiration.

[0008] Optionally, the crank is rotatably connected with the first hinge; the length of the crank is L1, and the length of the connecting rod is L2; wherein L2 / 4 < L1 < L2 / 2. Its beneficial effect lies in that by setting the length of the crank and the length of the connecting rod, the crank can be ensured to rotate a whole circle, and at the same time, the push plate can have sufficient reciprocating movement for extruding the elastic air bag.

[0009] Optionally, the center of rotation of the first hinge and the axial direction of the push rod have a spacing L3, and L1 > L3 > 0. Its beneficial effect lies in that the center of rotation of the first hinge and the axial direction of the push rod are not on the same straight line, and the stroke speed ratio coefficient can be obtained through the eccentric crank slider mechanism, that is, in the case of uniform rotation of the crank, the forward extension time and the backward extension time of the push plate in one period are different, that is, the simulation heartbeat signal (i.e. the vibration output of the vibration air bag) has different rising time and falling time in one period, and by simulating the different rising and falling times of the heartbeat signal, the single period signal of BCG (direct heartbeat signal) can be better simulated, and the sensitivity of the sleep monitoring mattress can be detected, thereby judging the performance of the sleep monitoring mattress.

[0010] Optionally, the crank slider mechanism further comprises a moving frame, the moving frame is detachably connected with the frame, the moving frame can move up and down, and the first hinge is arranged on the moving frame. Its beneficial effect lies in that by changing the spacing between the center of rotation of the first hinge and the axial direction of the push rod, the eccentricity is adjusted to adjust the simulated heartbeat signal.

[0011] Optionally, the device further comprises an air pump, a conduit and an air pressure sensor; the elastic air bag and the vibration air bag are connected through the conduit; the air pump introduces air into the elastic air bag and the vibration air bag through the conduit; the air pressure sensor is connected with the conduit to detect the air pressure P in the conduit; wherein, 10kPa < P < 20kPa.

[0012] Optionally, the vibration air bag comprises a plurality of isolation parts, a through hole is formed on the isolation part, and a plurality of isolation parts are arranged in the vibration air bag at intervals, so as to divide the interior of the vibration air bag into a plurality of chambers, and the through hole connects the chambers. The beneficial effect is that the vibration air bag is divided into a plurality of chambers by the isolation part, the plurality of chambers can distribute the overall deformation of the vibration air bag under the action of internal air pressure to each chamber, the overall shape change is relatively smaller, and the vibration air bag can work under higher internal air pressure. Through higher internal air pressure, the contraction and expansion of the elastic air bag can be more effectively converted into vibration signal output of the vibration air bag. In addition, due to the higher internal air pressure, the bottom of the plurality of chambers has a larger area that can be attached to the sleep monitoring mattress, which is more conducive to the transmission of vibration signals and more stable signal transmission.

[0013] Optionally, the device further comprises a mounting plate and a counterweight; the mounting plate is arranged on the side wall of the vibration air bag; the counterweight is arranged on the mounting plate; and the other side wall of the vibration air bag is used to contact the sleep monitoring mattress. The beneficial effect is that the mounting plate and the counterweight with different weights are arranged to simulate a human body with different weights.

[0014] Optionally, the material of the elastic air bag is an elastic rubber material; the volume of the vibration air bag is V1, the volume of the elastic air bag is V2, and 10V2 < V1 < 20V2. The beneficial effect is that the high-frequency noise is easily filtered by arranging the elastic air bag with high elasticity, thereby improving the accuracy of the simulated heartbeat signal.

[0015] Optionally, the device further comprises a fixing frame; the fixing frame comprises a top, a bottom and a side wall, the bottom, the top and the side wall form a frame with an opening; and the elastic air bag is arranged in the fixing frame through the opening. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The schematic diagram of the embodiment of the device for simulating life characteristics provided by the present application;

[0017] Figure 2 The schematic diagram of the power mechanism provided by the present application;

[0018] Figure 3 The front view of the vibration air bag provided by the present application;

[0019] Figure 4 For Figure 3 the cross-sectional view at A-A;

[0020] Figure 5 a schematic diagram of vibration displacement and time of the vibration air bag provided by the embodiment of the present application;

[0021] Figure 6 a schematic diagram of the system for simulating vital signs provided by the embodiment of the present application.

[0022] Reference signs:

[0023] vibration air bag 100, isolation part 101, through hole 102; elastic air bag 200; power mechanism 300, push plate 301, sliding frame 302, first hinge 303, crank 304, second hinge 305, connecting rod 306, third hinge 307, push rod 308, moving frame 309, rack 310, air pump 400, conduit 401, air pressure sensor 402, mounting plate 500, counterweight 501, fixed frame 600, sleep monitoring mattress 700. DETAILED DESCRIPTION

[0024] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application. Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the common meanings by those of ordinary skill in the art to which the present application belongs. The similar words such as “comprise” used herein mean that the elements or objects before the words cover the elements or objects listed after the words and their equivalents, and do not exclude other elements or objects.

[0025] In view of the problems in the prior art, the embodiments of the present application provide a device for simulating vital signs, as shown in Figure 1 the device includes a vibration air bag 100, an elastic air bag 200 and a power mechanism 300. The power mechanism 300 includes a push plate 301, the push plate 301 is in abutment with the elastic air bag 200, and the push plate 301 can reciprocate to push the elastic air bag 200. The elastic air bag 200 is in fluid communication with the vibration air bag 100. The vibration air bag 100 is used to simulate the action when the heart beats.

[0026] In the embodiment, when the device for simulating the life characteristics is used, the vibration air bag 100 is first attached to the sleep monitoring mattress 700, the power mechanism 300 pushes the push plate 301 to push and press the elastic air bag 200, since the elastic air bag 200 is in fluid communication with the vibration air bag 100, the vibration air bag 100 will periodically vibrate with the movement of the elastic air bag 200, thereby simulating the action of heartbeat when breathing, which is suitable for performance detection of different sleep monitoring mattresses 700, and improves the detection efficiency.

[0027] Optionally, the power mechanism 300 comprises a crank slider mechanism, a motor (not shown in the figure) and a sliding frame 302; the crank slider mechanism comprises a rack 310, a first hinge 303, a crank 304, a second hinge 305, a connecting rod 306, a third hinge 307 and a push rod 308 connected in sequence. Wherein, the motor drives the crank 304 to move, the push rod 308 is connected with the push plate 301, and the push rod 308 is perpendicular to the push plate 301, the push rod 308 is slidably arranged in the sliding frame 302, the crank 304 drives the push rod 308 to reciprocate left and right through the connecting rod 306. The axial direction of the sliding frame 302 is perpendicular to the push plate 301. The crank 304 and the rack 310 form a rotary pair through the first hinge 303, the crank 304 and the connecting rod 306 form a rotary pair through the second hinge 305, the connecting rod 306 and the push rod 308 form a rotary pair through the third hinge 307, and the push rod 308 and the rack 310 form a moving pair through the sliding frame 302.

[0028] In the embodiment, by connecting the rotary pair and the moving pair, the push rod 308 can periodically stretch and shrink, the push rod 308 periodically presses the elastic air bag 200 to make the vibration air bag 100 vibrate, thereby simulating the action signal when the heart beats or breathes.

[0029] Further, referring to Figure 2 The crank 304 is rotatably connected with the first hinge 303. The length of the crank 304 is L1, and the length of the connecting rod 306 is L2. Wherein, L2 / 4 < L1 < L2 / 2. By setting the length of the crank 304 and the length of the connecting rod 306, the crank 304 can rotate a whole circle, and at the same time, the push plate 301 has enough reciprocating movement for pushing and pressing the elastic air bag 200, that is, simulating the periodic heartbeat signal.

[0030] In addition, the rotation center point of the first hinge 303 is spaced apart from the axial direction of the push rod 308 by a distance L3, and L1>L3>0. L3 is the distance of the rotation center point of the first hinge 303 perpendicular to the axial direction of the push rod 308.

[0031] In the embodiment, the first hinge 303 is arranged in the crank slider mechanism as shown in the figure. Figure 5 As shown in the figure, the rotation center point of the first hinge 303 is not intersected with the straight line direction of the axial direction of the push rod 308. That is, the crank slider mechanism is eccentric, and by arranging the eccentric crank slider mechanism, the stroke speed ratio coefficient can be obtained. That is, in the case of uniform rotation of the crank 304, the forward extension time and the backward extension time of the push plate 301 in one period are different, that is, the rising time T1 and the falling time T2 of the simulated heartbeat signal (i.e. the vibration output of the vibration air bag 100) in one period are different. By setting the rising and falling time of the simulated heartbeat signal to be different, the single period signal of the BCG (direct heartbeat signal) can be better simulated, and the sensitivity of the sleep monitoring mattress 700 can be detected, and then the performance of the sleep monitoring mattress 700 can be judged.

[0032] Optionally, the crank slider mechanism further comprises a moving frame 309, the moving frame 309 is detachably connected with the rack 310, and the moving frame 310 is movable up and down. The first hinge 303 is arranged on the moving frame 309.

[0033] By adjusting the distance L3 between the rotation center point of the first hinge 303 and the axial direction of the push rod 308, the eccentricity is adjusted, and the simulated heartbeat signal is adjusted, so as to detect the reliability of the sleep monitoring mattress 700.

[0034] Optionally, the device further comprises an air pump 400, a conduit 401 and an air pressure sensor 402. The elastic air bag 200 and the vibration air bag 100 are communicated through the conduit 401. The air pump 400 introduces air into the elastic air bag 200 and the vibration air bag 100 through the conduit 401. The air pressure sensor 402 is connected with the conduit 401, and is used for detecting the air pressure P in the conduit 401. Wherein, 10kPa

[0035] Optionally, as shown in the figure, Figure 3 and Figure 4 As shown in the figure, the vibration air bag 100 comprises a plurality of isolation parts 101, a through hole 102 is formed on the isolation part 101, and a plurality of isolation parts 101 are arranged in the vibration air bag 100, so as to divide the inside of the vibration air bag 100 into a plurality of chambers, and the through hole 102 communicates the chambers.

[0036] In this embodiment, by providing the isolation part 101, the vibration airbag 100 can be divided into multiple chambers. The arrangement of multiple chambers can distribute the overall deformation of the vibration airbag 100 under the action of internal air pressure to each chamber, with a relatively smaller overall shape change, and enable the vibration airbag 100 to work at a higher internal air pressure. With a higher internal air pressure, the contraction and expansion of the elastic airbag 200 can be more effectively converted into the vibration signal output of the vibration airbag 100. In addition, since it can withstand a higher internal air pressure, the bottoms of multiple chambers have a larger area to fit on the sleep monitoring mattress 700, which is more conducive to the transmission of vibration signals and the signal transmission is more stable.

[0037] Optionally, the device further includes a mounting plate 500 and a counterweight 501. The mounting plate 500 is provided on the side wall of the vibration airbag 100. The counterweight 501 is provided on the mounting plate 500. The other side wall of the vibration airbag 100 is used to contact the sleep monitoring mattress 700. By providing the mounting plate 500 and the counterweights 501 with different weights, human bodies with different weights can be simulated.

[0038] Optionally, the material of the elastic airbag 200 is an elastic rubber material; the volume of the vibration airbag 100 is V1, the volume of the elastic airbag 200 is V2, and 10V2 < V1 < 20V2. By providing the highly elastic elastic airbag 200, high-frequency clutter is easily filtered, improving the accuracy of the simulated heartbeat signal. In some embodiments, the volume V1 of the vibration airbag 100 satisfies: 10V2 < V1 < 15V2.

[0039] Optionally, the device further includes a fixing frame 600. The fixing frame 600 includes a top, a bottom, and side walls. The bottom, the top, and the side walls form a frame with an opening, and the elastic airbag 200 is provided in the fixing frame 600 through the opening.

[0040] In another embodiment disclosed in this embodiment, a system for simulating vital signs is provided. Referring to Figure 6 as shown, the system includes a human-computer interaction module, a control module, and a mattress monitoring module that are electrically connected in sequence. Among them, the control module includes a motor drive module and an air pump drive module. The motor drive module is used to control the switch of the motor, and the air pump drive module is used to control the switch of the air pump. The control module receives the air pressure detection signal of the air pressure sensor and controls the air supply of the air pump through the air pressure detection signal. The mattress monitoring module feeds back the signals detected by the sleep monitoring mattress to the control module and displays the monitoring effect through the human-computer interaction module.

[0041] The above merely illustrates the specific implementation of the embodiments of the present application, but the protection scope of the embodiments of the present application is not limited to this. Any change or replacement within the technical scope disclosed by the embodiments of the present application should be covered in the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application should be subject to the protection scope of the claims.

Claims

1. A device for simulating vital signs, characterized in that The power mechanism comprises a push plate, the push plate is in abutment with the elastic air bag, and the push plate is reciprocable for pushing the elastic air bag; The power mechanism comprises a crank slider mechanism, a motor and a sliding frame; The crank slider mechanism comprises a rack, a first hinge, a crank, a second hinge, a connecting rod, a third hinge and a push rod which are connected in sequence; the motor drives the crank to rotate, the push rod is connected with the push plate, the push rod is slidably arranged in the sliding frame, and the crank drives the push rod to reciprocate left and right through the connecting rod; the crank and the rack form a rotary pair through the first hinge, the crank and the connecting rod form a rotary pair through the second hinge, the connecting rod and the push rod form a rotary pair through the third hinge, and the push rod and the rack form a moving pair through the sliding frame; the length of the crank is L1, the rotary center point of the first hinge and the axial direction of the push rod have a spacing L3, and L1>L3>0. The length of the connecting rod is L2; wherein, L2 / 4 The crank slider mechanism further comprises a moving frame, the moving frame is detachably connected with the rack, the moving frame is movable up and down, and the first hinge is arranged on the moving frame. Further comprising an air pump, a conduit and an air pressure sensor; 2. The device for simulating vital signs according to claim 1, characterized in that ； The elastic air bag and the vibration air bag are in fluid communication through the conduit; 3. The device for simulating life signs according to claim 1 or 2, characterized in that, The air pump introduces air into the elastic air bag and the vibration air bag through the conduit; 4. The simulated life sign device according to claim 1, characterized in that, The air pressure sensor is connected with the conduit and is used to detect the air pressure P in the conduit; wherein, 10kPa The vibration air bag comprises a plurality of isolation portions, a through hole is formed in each isolation portion, and a plurality of isolation portions are arranged in the vibration air bag at intervals to divide the interior of the vibration air bag into a plurality of chambers, and the through hole connects the chambers. Further comprising a mounting plate and a counterweight; The mounting plate is arranged on the side wall of the vibration air bag; 5. The mock life feature device according to claim 1, characterized in that, The counterweight is arranged on the mounting plate; 6. The simulated life sign device according to claim 5, characterized in that, The other side wall of the vibration air bag is used to contact the sleep monitoring mattress. The material of the elastic air bag is elastic rubber material; the volume of the vibration air bag is V1, the volume of the elastic air bag is V2, and 10V2 Further comprising a fixing frame; The fixing frame comprises a top, a bottom and a side wall, the bottom, the top and the side wall form a frame with an opening; 7. The mock life feature device according to claim 1, characterized in that, The elastic air bag is arranged in the fixing frame through the opening.

8. The mock life feature device according to claim 1, characterized in that, ​ ​ ​

Images