CN112914889A - Intelligent nursing air mattress - Google Patents
Intelligent nursing air mattress Download PDFInfo
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- CN112914889A CN112914889A CN202110255744.8A CN202110255744A CN112914889A CN 112914889 A CN112914889 A CN 112914889A CN 202110255744 A CN202110255744 A CN 202110255744A CN 112914889 A CN112914889 A CN 112914889A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/05—Parts, details or accessories of beds
- A61G7/057—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor
- A61G7/05769—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor with inflatable chambers
- A61G7/05776—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor with inflatable chambers with at least two groups of alternately inflated chambers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/001—Beds specially adapted for nursing; Devices for lifting patients or disabled persons with means for turning-over the patient
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G2203/00—General characteristics of devices
- A61G2203/70—General characteristics of devices with special adaptations, e.g. for safety or comfort
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Abstract
The invention provides an intelligent nursing air mattress which comprises a right trunk air cushion unit, a right hip air cushion unit, a right limb air cushion unit, a right basic air cushion unit, a left limb air cushion unit, a left hip air cushion unit, a left trunk air cushion unit, a controller and a remote controller. Each air cushion unit consists of an air pump, a three-way electromagnetic valve, a communicating pipe, an air bag and a D trigger. The air mattress is divided into a right trunk area, a right hip area, a right limb area, a left hip area, a left trunk area, a communicating pipe area, an upper layer and a lower layer. The upper layer is a right basic air bag and a left basic air bag, and the lower layer is a right trunk air bag, a right hip air bag, a right limb air bag, a left hip air bag and a left trunk air bag. The controller sends signals of different combinations of height or height to each air bag in each time period to control the air bags to inflate or deflate, so as to realize the automatic turnover in three modes of horizontal position, right-side turnover and left-side turnover at regular time and reduce the incidence of pressure sores caused by long-term supination.
Description
Technical Field
The invention belongs to the field of medical equipment, relates to an air mattress, and particularly relates to a multi-airbag intelligent nursing air mattress capable of assisting in turning over in order to prevent pressure sores.
Background
Pressure sores, also known as pressure ulcers and bedsores, are caused by persistent ischemia, anoxia, malnutrition, etc. resulting from long-term pressure on human tissues. Pressure sores are a problem to be solved urgently in nursing and rehabilitation treatment. Pressure sores tend to develop in bony protuberances where there is no muscle coating or where the muscle layer is thin, there is a lack of protection of the adipose tissue, and often pressure, such as:
(1) the supine position is prone to develop in the occipital tuberosity, scapular region, elbow, vertebral body bulge, sacral caudal region, and heel;
(2) the lateral position is easy to occur in ears, acromions, elbows, ribs, hips, inside and outside of knee joints, and medial and lateral malleolus;
(3) prone position is prone to the ears, cheeks, shoulders, female breasts, male genitals, iliac crest, knees, toes.
Pressure sores are frequently generated among long-term lying patients, old people or major operation patients, and the fatal factor of more than 50% of long-term lying patients is infection caused by pressure sores, which is always a difficult problem in the field of medical treatment and nursing, and causes high attention of medical institutions. The early stage of pressure sore can be prevented by taking measures of turning over, reducing pressure and the like. The skin care is well done, and the method for relieving the local tissue pressure is the most effective and convenient method for preventing pressure sores. In order to relieve local skin pressure, nurses need to regularly change the body position of the patient, adjust the posture, take a lot of trouble and effort, and also influence the rest of the patient at night. Therefore, it is necessary to develop an intelligent automatic turning nursing bed. The prevention effect of pressure sores is different when people lie on the side, the influence of the angle of 30 degrees when people lie on the side on the vital signs of patients is small, and the pressure sores can be effectively prevented (journal of clinical care, 2019, 18(6): 77-79). The side lying angle of more than 30 degrees and less than 60 degrees can prevent pressure sores and has better comfort (clinical care, 2010, 48(13): 60-61). The wave type air cushion bed can relieve vertical pressure and massage type dispersion body pressure (journal of clinical and experimental medicine, 2006, 5(2): 173). At present, the nursing of turning over is mainly carried out manually, and the main problems of the existing nursing method are as follows:
(1) due to limited nursing human resources, patients often fail to turn over regularly according to the requirements of nursing guidelines;
(2) the body turning consumes the physical strength of the nurse, so that the body turning nursing becomes heavy and active for the nurse.
Therefore, a nursing mattress capable of preventing pressure sores and effectively turning over is needed.
Disclosure of Invention
The invention aims to provide an intelligent nursing air mattress, which is a nursing mattress capable of effectively turning over. The device consists of a right trunk air cushion unit, a right hip air cushion unit, a right limb air cushion unit, a right base air cushion unit, a left limb air cushion unit, a left hip air cushion unit, a left trunk air cushion unit, a controller and a remote controller. The controller outputs 8 control signals: the remote controller comprises a right trunk air cushion control signal, a right hip air cushion control signal, a right limb air cushion control signal, a right basic air cushion control signal, a left limb air cushion control signal, a left hip air cushion control signal and a left trunk air cushion control signal, and is respectively connected with a right trunk air cushion unit, a right hip air cushion unit, a right limb air cushion unit, a right basic air cushion unit, a left limb air cushion unit, a left hip air cushion unit and a signal input end of the left trunk air cushion unit, and the remote controller exchanges information with the controller in a wireless communication mode.
The structure composition of 8 air cushion units such as a right trunk air cushion unit, a right hip air cushion unit, a right limb air cushion unit, a right base air cushion unit, a left limb air cushion unit, a left hip air cushion unit, a left trunk air cushion unit and the like is the same, and the air cushion units are all composed of an air pump, a three-way electromagnetic valve, a communicating pipe, an air bag and a D trigger.
In one air cushion unit, an air cushion control signal output from a controller is connected with an air pump control input and a D trigger input, the D trigger output is connected with a three-way electromagnetic valve control input, an air outlet of an air pump is connected with an air inlet of the three-way electromagnetic valve, an air outlet of the three-way electromagnetic valve is connected with an air inlet of an air bag through a communicating pipe, and the other air outlet of the three-way electromagnetic valve is communicated with the atmosphere. The air cushion control signal output by the controller is at a high level to indicate inflation, and at a low level to indicate deflation.
The air bags corresponding to the right trunk air cushion unit, the right hip air cushion unit, the right limb air cushion unit, the right basic air cushion unit, the left limb air cushion unit, the left hip air cushion unit and the left trunk air cushion unit are a right trunk air bag, a right hip air bag, a right limb air bag, a right basic air bag, a left limb air bag, a left hip air bag and a left trunk air bag.
The intelligent nursing air mattress is divided into an upper layer and a lower layer and is divided into 7 areas such as a right trunk area, a right hip area, a right limb area, a left hip area, a left trunk area, a communicating pipe area and the like. The upper layer is distributed with two air bags of a right basic air bag and a left basic air bag, and the lower layer is distributed with six air bags of a right trunk air bag, a right hip air bag, a right limb air bag, a left hip air bag, a left trunk air bag and the like.
The sizes of the right basic air bag and the left basic air bag distributed on the upper layer of the air mattress are 196cm in length, 54cm in width and 15cm in height. The air bag is hot-melted and connected with the upper bag wall and the lower bag wall by a film pressing hot melting process, the hot melting width is 3mm, three areas including a trunk area, a hip area and a limb area are formed in the radial direction, and an inner area, an auxiliary outer area, an outer area and 12 areas are formed in the transverse direction. The sizes of the 12 areas are that the trunk area length is 40-80 cm, the hip area length is 30-60 cm and the limb area length is 40-80 cm in the radial direction, the inner area width is 5-10 cm, the secondary inner area width is 10-13 cm, the secondary outer area width is 13-17 cm and the outer area width is 17-30 cm in the transverse direction. The air bags of the two units form a triangular air bag with an included angle of 15-30 degrees in an inflated state, and the right basic air bag and the left basic air bag are axially symmetrical.
The lower layer of the air mattress is distributed with six air bags such as a right trunk air bag, a right hip air bag, a right limb air bag, a left hip air bag, a left trunk air bag and the like, and the air bags are placed in a right trunk area, a right hip area, a right limb area, a left hip area and a left trunk area which correspond to the figure 3. The sizes of the four air bags of the right body air bag, the right limb air bag, the left limb air bag and the left body air bag are 40-80 cm in length, 20-40 cm in width and 15-30 cm in height. The right hip air bag and the left hip air bag are 20-50 cm long, 20-40 cm wide and 15-30 cm high. The air bags form a triangular air bag with an included angle of 30-60 degrees in an inflated state. The left air bag inflation structure is the same as the right air bag inflation structure, and the left air bag inflation structure and the right air bag inflation structure are axially symmetrical.
All the air cushion unit communicating tubes are placed in the communicating tube area and connected to the corresponding air cushion units. The four sides of the air mattress are provided with binding holes for binding the mattress on a sickbed.
The intelligent nursing air mattress has three modes of a horizontal position, a right side turning-over mode and a left side turning-over mode. The three modes depend on a right trunk air cushion control signal, a right hip air cushion control signal, a right limb air cushion control signal, a right base air cushion control signal, a left limb air cushion control signal, a left hip air cushion control signal and a left trunk air cushion control signal to output different 'high' or 'low' levels at different time periods, and control the 'inflation' or 'deflation' of air bags in corresponding 8 air cushion units to achieve the purpose of turning over.
Horizontal position mode: when the control signals are at T1, 8 control signals are all at 'low' level, corresponding 8 air cushion units are not inflated, and the air cushion bed is in 'standby' state. At the time phase of T2, the right and left base air cushion control signals are at "high" level, the other control signals are at "low" level, the upper air cushion bed is in operation, and is bilaterally symmetric and in horizontal state. The duration of T2, which determines the length of time for the "inflated" state, is typically 5 minutes to 2 hours. At time T3, the right and left base air cushion control signals are at a "low" level, the right and left base air cushion cells are in a "deflated" state, and the care air cushion bed returns to a "standby" state.
Right-side flip mode: when the control signals are at T1, 8 control signals are all at 'low' level, corresponding 8 air cushion units are not inflated, and the air cushion bed is in 'standby' state. At time T2, the right base air cushion control signal is at "high" level, the other control signals are at "low" level, and the corresponding right base air cushion cell "inflates"; thereafter, at time T3, the left base cushion control signal is at a "high" level and the corresponding left base cushion cell is "inflated", for time periods T2 and T3 of 0 to 10 minutes. At time T4, the left torso air cushion control signal is at "high" level, and the corresponding left torso air cushion unit is "inflated"; at time T5, the left hip air cushion control signal is at "high" level, and the corresponding left hip air cushion cell "inflates"; at time T6, the left limb air cushion control signal is at "high" level, the corresponding left limb air cushion unit is "inflated", and the time of T4, T5, T6 is 0 to 2 hours. At the time of T7, the control signals of 5 inflated air cushion units are all at "low" level, 5 corresponding air bags are all "deflated", and the nursing air cushion bed is restored to the "standby" state.
Left side flip mode: when the control signals are at T1, 8 control signals are all at 'low' level, corresponding 8 air cushion units are not inflated, and the air cushion bed is in 'standby' state. At time T2, the left base air cushion control signal is at "high" level, the other control signals are at "low" level, and the corresponding left base air cushion cell "inflates"; thereafter, at time T3, the right base cushion control signal is at a "high" level and the corresponding right base cushion cell is "inflated", for time periods T2 and T3 of 0 to 10 minutes. At time T4, the right torso air cushion control signal is "high" level, and the corresponding right torso air cushion unit is "inflated"; at time T5, the right hip air cushion control signal is "high" level, and the corresponding right hip air cushion cell "charges air"; at time T6, the right limb cushion control signal is "high", the corresponding right limb cushion unit "inflates", and the time for T4, T5, T6 is 0 to 2 hours. At the time of T7, the control signals of 5 inflated air cushion units are all at "low" level, 5 corresponding air bags are all "deflated", and the nursing air cushion bed is restored to the "standby" state.
The invention provides a nursing air mattress based on pneumatic principle and intelligent control based on the difficulty of turning nursing. The invention has the advantages that:
(1) when the patient is kept in the supine sleeping position, the patient can turn over at the left side or the right side by not less than 30 degrees, so that the occurrence probability of pressure sores caused by long-time supine is reduced;
(2) by applying the turnover mode, the automatic turnover at regular time is realized, and the condition that the turnover nursing is not in accordance with the nursing regulation requirement caused by insufficient manpower resources of nurses is avoided;
(3) by applying the mattress, the physical consumption of nurses is reduced, and particularly, the physical requirements of the nurses on the turning-over of heavy patients are insufficient.
Drawings
Fig. 1 is a general block diagram of an intelligent nursing air mattress.
Figure 2 is a block diagram of an air mattress unit.
Figure 3 is a sectional view of an air mattress.
Fig. 4 is a sectional view of the upper part of the air mattress.
Figure 5 is a side view of the upper layer of the air mattress in an "inflated" condition.
Figure 6 is a sectional view of the lower layer of the air mattress.
Figure 7 is a side view of the air mattress with the lower cells "inflated".
Fig. 8 is a block diagram of the controller 9.
Fig. 9 shows a liquid crystal panel 45 and a driving circuit 46 thereof.
Fig. 10 is a DC-DC converter 462.
Fig. 11 is a common power generator 463.
Fig. 12 is a backlight driving circuit 464.
Fig. 13 is a touch screen interface circuit 44.
Fig. 14 is a communication unit 47.
Fig. 15 is a timing diagram of right turn mode airbag control signals.
Fig. 16 is a timing chart of the air bag control signal in the left turn-over mode.
Fig. 17 is a timing diagram of right turn mode airbag control signals.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Example 1
Referring to fig. 1, a nursing mattress capable of effectively turning over. The device consists of a right trunk air cushion unit 1, a right hip air cushion unit 2, a right limb air cushion unit 3, a right base air cushion unit 4, a left base air cushion unit 5, a left limb air cushion unit 6, a left hip air cushion unit 7, a left trunk air cushion unit 8, a controller 9 and a remote controller 10. The controller 9 outputs 8 control signals: right torso air cushion control signal, right buttock air cushion control signal, right torso air cushion control signal, right basis air cushion control signal, left limbs air cushion control signal, left buttock air cushion control signal, left torso air cushion control signal, and respectively with right torso air cushion unit 1, right buttock air cushion unit 2, right limbs air cushion unit 3, right basis air cushion unit 4, left basis air cushion unit 5, left limbs air cushion unit 6, left buttock air cushion unit 7, the signal input part of left torso air cushion unit 8 is connected, remote controller 10 carries out information exchange through wireless communication's form and controller 9.
Referring to fig. 2, the right torso air cushion unit 1, the right hip air cushion unit 2, the right limb air cushion unit 3, the right base air cushion unit 4, the left base air cushion unit 5, the left limb air cushion unit 6, the left hip air cushion unit 7, the left torso air cushion unit 8, and other 8 air cushion units have the same structure, and are all composed of an air pump 11, a three-way electromagnetic valve 12, a communication pipe 13, an air bag 14, and a D trigger 15. Except that the bladder 14 is sized differently. In an air cushion unit, an air cushion control signal output from a controller 9 is connected with a control input of an air pump 11 and an input of a D trigger 15, an output of the D trigger 15 is connected with a control input of a three-way electromagnetic valve 12, an air outlet of the air pump 11 is connected with an air inlet of the three-way electromagnetic valve 12, an air outlet of the three-way electromagnetic valve 12 is connected with an air inlet of an air bag 14 through a communicating pipe 13, and the other air outlet of the three-way electromagnetic valve 12 is communicated with the atmosphere. The air cushion control signal outputted from the controller 9 is "high" level for "inflation" and "low" level for "deflation". When the output of the controller 9 is in a high level, the air pump 11 is controlled to be opened, and meanwhile, the D trigger 15 outputs the high level to control the air inlet of the three-way electromagnetic valve 12 to be communicated with the air outlet, so that the air of the air pump 11 inflates the air bag 14 through the three-way electromagnetic valve 12. When the output of the controller 9 is in a low level, the air pump 11 is controlled to be closed, and meanwhile, the D trigger 15 outputs the low level to control the air inlet of the three-way electromagnetic valve 12 to be communicated with the atmosphere, so that the air in the air bag 14 is discharged to the atmosphere through the three-way electromagnetic valve 12.
Example 2
Referring to fig. 3, the smart care air mattress is divided into 7 regions of a right torso region 21, a right hip region 22, a right limb region 23, a left limb region 24, a left hip region 25, a left torso region 26, and a connected tube region 27. Right torso region 21 and left torso region 26 are torso regions, right hip region 22 and left hip region 25 are hip regions, and right limb region 23 and left limb region 24 are limb regions. The other 6 areas are divided into upper and lower layers except the communication pipe area 27.
Referring to fig. 4, the air mattress upper layer is distributed with two air bags of the right base air mattress unit 4 and the left base air mattress unit 5: a right base airbag 144 and a left base airbag 145, the 2 airbags having dimensions of 196cm in length, 54cm in width and 15cm in height. The air bag is hot-melted and connected with the upper bag wall and the lower bag wall by a film pressing hot melting process, the hot melting width is 3mm, three areas including a trunk area 31, a hip area 32 and a limb 33 in the radial direction are formed, four areas including an inner area 34, an inner area 35, an outer area 36 and an outer area 37 in the transverse direction are formed, the total number of the areas is 12, and the sizes are as shown in table 1. The right base airbag 144 is axisymmetrical to the left base airbag 145, and its communication pipe 13 is connected to the right base air cushion unit 4 and the left base air cushion unit 5.
TABLE 1 upper air bag parameter table
| Long (cm) | Inner zone 34(cm) | The secondary region 35(cm) | Second outer zone 36(cm) | Outer zone 37(cm) | |
| Trunk area | 40～80 | 5～10 | 10～13 | 13～17 | 17～30 |
| Area of the buttocks | 30～60 | 5～10 | 10～13 | 13～17 | 17～30 |
| Limb area | 40～80 | 5～10 | 10～13 | 13～17 | 17～30 |
Referring to FIG. 5, a side view of the right base airbag 144 in an "inflated" state is shown. The inner area 34, the secondary inner area 35, the secondary outer area 36 and the outer area 37 of the right basic air bag 144 form a triangular air bag with an included angle of 15-30 degrees so as to adapt to various body types of bedridden people. The included angle is small for the big bedridden people, such as the fat; the included angle is large for small bedridden people such as a lean person. The function of the triangular cells is that when both the right base cell 144 and the left base cell 145 are "inflated," the patient is positioned in the middle of the mattress in preparation for turning over with the "inflated" lower mattress cells.
Referring to fig. 6, the right torso air cushion unit 1, the right hip air cushion unit 2, the right limb air cushion unit 3, the right base air cushion unit 4, the left base air cushion unit 5, the left limb air cushion unit 6, the left hip air cushion unit 7 and the left torso air cushion unit 8 correspond to a right torso air bag 141, a right hip air bag 142, a right limb air bag 143, a right base air bag 144, a left base air bag 145, a left limb air bag 146, a left hip air bag 147 and a left torso air bag 148. The lower layer of the air mattress is distributed with six air bags such as a right trunk air bag 141, a right hip air bag 142, a right limb air bag 143, a left limb air bag 146, a left hip air bag 147, a left trunk air bag 148 and the like, which are respectively air bags of a right trunk air cushion unit 1, a right hip air cushion unit 2, a right limb air cushion unit 3, a left limb air cushion unit 6, a left hip air cushion unit 7 and a left trunk air cushion unit 8, and are placed in a right trunk area 21, a right hip area 22, a right limb area 23, a left limb area 24, a left hip area 25 and a left trunk area 26 corresponding to the figure 3. The sizes of the four air bags of the right body air bag 141, the right limb air bag 143, the left limb air bag 146 and the left body air bag 148 are 40-80 cm in length, 20-40 cm in width and 15-30 cm in height. The right hip air bag 142 and the left hip air bag 147 are 20-50 cm long, 20-40 cm wide and 15-30 cm high.
Referring to fig. 7, the side view of 6 air bags in an inflated state, such as a right torso air bag 141, a right hip air bag 142, a right limb air bag 143, a left limb air bag 146, a left hip air bag 147, a left torso air bag 148 and the like, is a triangular air bag with an included angle of 30-60 degrees so as to adapt to various body types of bedridden people. The included angle is small for the big bedridden people, such as the fat; the included angle of a small bedridden person, such as a lean person, is large, and the angle nursing device has the function of nursing the angle to achieve the purpose of turning over. The air bags have the same structure and are all equilateral triangles. The left air bag inflation structure is the same as the right air bag inflation structure, and the left air bag inflation structure and the right air bag inflation structure are axially symmetrical.
All of the air cushion unit communication tubes 13 are placed in the communication tube zone 27 and connected to the corresponding air cushion units. The four sides of the mattress are provided with binding holes for binding the air mattress on the sickbed.
Example 3
Referring to fig. 8, the controller 9 is composed of an embedded microprocessor 41, a Read Only Memory (ROM)42, a Random Access Memory (RAM)43, a touch screen 44, a liquid crystal screen 45 and its driving circuit 46, and a communication unit 47. The ROM42 and the RAM43 are respectively connected to the ROM and the RAM of the embedded microprocessor 41, the touch screen 44 is connected to the analog-to-digital conversion interface of the embedded microprocessor 41, the LCD 45 and the driving circuit 46 thereof are connected to the LCD controller of the embedded microprocessor 41, the communication unit 47 is connected to the serial communication of the embedded microprocessor 41, the I/O interface of the embedded microprocessor 41 outputs the control signals of each air cushion unit, and the USB interface of the embedded microprocessor 41 is used to connect to a USB device, such as a USB disk.
The communication unit 47 in the controller 9 and the remote controller 10 transmit information to each other in a wireless communication mode, so that the control mode and the instruction of the intelligent nursing mattress are transmitted to the controller 9 of the intelligent nursing mattress through the remote controller 10, and the intelligent nursing mattress automatically controls the turning-over function according to nursing. The following describes the controller 9 components in detail:
1. embedded microprocessor 41
The embedded microprocessor 51 of the controller 9 employs a 32-bit RISC microprocessor S3C2410X, marketed by Samsung, Inc. based on the ARM920T kernel.
2. Human-machine interface
The man-machine interface comprises a liquid crystal screen 45 and a touch screen 44. The operator can manually input the turning-over nursing mode through the touch screen 44; the control information from the remote controller 10 and the state of the intelligent nursing mattress are displayed through the liquid crystal screen 45.
The liquid crystal panel 45 is LTS350Q1-PE1 liquid crystal panel of TFT-LCD type manufactured by Samsung, Inc. (Samsung), a driving circuit 46 matched with the liquid crystal panel is designed, and an LCD controller of the embedded microprocessor 41(S3C2410X), the TFT-LCD driving circuit 46 and the LTS350Q1-PE1 liquid crystal panel 45 are combined to form an embedded liquid crystal display system, which is shown in FIG. 9. The driving circuit 46 includes a timing controller 461, a DC-DC converter 462, a common power generator 463, a backlight driving circuit 464, and the like.
Digital circuits and analog circuits are integrated in the LTS350Q1-PE1 liquid crystal panel 45, and digital voltages and analog voltages need to be supplied externally. The DC-DC converter 462 and the common power generator 463 provide multiple voltages to the LTS350Q1-PE1 lcd panel 45, with specific power distribution as shown in table 2.
TABLE 2LTS350Q1-PE1 Power supply
| Name (R) | (symbol) | Foot horn | Voltage of | ||
| Digital | DV | DD | 11，12 | 3.3V | |
| Analog | AV | DD | 9，10 | 4.0V | |
| Grid turn-on | V | ON | 5，6 | 15V | |
| Grid off supply voltage | VOFF | 1，2 | -10V | ||
| Voltage of common | V | COM | 15，16 | 4.0V |
The LTS350Q1-PE1 lcd requires an external timing controller 461 (i.e., companion chip) for digital timing matching, and its dedicated chip is LCC 3600. The input and output of LCC3600 is connected to the LCD controller output of microprocessor S3C2410X and the inputs of LTS350Q1-PE1, see Table 3.
TABLE 3 input and output signal connections for LCC3600
The DC-DC converter 462 is selected from a TFT-LCD type LCD power supply MAX1779 available from MAXIM corporation, and its specific circuit is selected from the circuits recommended by MAX1779 handbook, see FIG. 10, and its input power supply DVddAnd an output power supply AVdd、Von、VoffDigital power supply DV respectively corresponding to LTS350Q1-PE1 shown in Table 3DDAnalog power supply AVDDGrid power-on source VONGrid closed power supply VOFFAnd (4) connecting. The common power generator 463 selects the circuit recommended by LTS350Q1-PE1 handbook, see FIG. 11, in which the power sources VDD and AVDD are respectively from the power source DV of the DC-DC converter 562ddAnd AVddThe input signals REV and REVB are output signals from the timing controller 461LCC 3600. The circuit outputs a power supply VCOMCommon power supply V of LTS350Q1-PE1 shown in Table 3COMAnd (4) connecting.
The lcd panel 45 must be provided with a backlight driving circuit 464 to make the picture on the lcd panel clearer. The LTS350Q1-PE1 adopts an LED backlight mode inside, a special LED driving chip MP1521 is configured, and a backlight driving circuit 464 is shown in FIG. 12. The 3 feedback loops FB1, FB2 and FB3 of the MP1521 are short-circuited, so that a larger driving current can be provided to drive an LED backlight lamp, and the circuit is designed with an overcurrent protection function. In this circuit, R206 is a feedback resistor for sampling the output current. The brightness of the liquid crystal screen can be adjusted by the voltage on the brightness control signal BRT of the MP1521, and in order to improve the flexibility of application, the pin R204 and the pin R205 are set to be fixed levels. To save power consumption, the backlight driver 464 receives the LCD controller power enable control signal LCD _ PWREN from the microprocessor S3C 2410X. When the LCD _ PWREN is at a high level, the backlight driving circuit 464 is turned on; the circuit is turned off at low level to save power consumption.
The LTS350Q1-PE1 liquid crystal screen can be used as a touch screen, the touch screen 44 of the controller 9 is the LTS350Q1-PE1 liquid crystal screen, and a circuit thereof is a circuit recommended by the S3C2410 manual, see FIG. 13. The 4-wire resistive touch screen is composed of transverse resistance wires X and longitudinal resistance wires Y, and the labels of the resistance wires are shown in a table 4.
TABLE 4 touch Screen designations
| Name (R) | LTS350Q1-PE1 | S3C2410X | I/O |
| Transverse resistance wire _ left | X2 | XM | X_Left |
| Longitudinal resistance wire _ down | Y1 | YM | Y_Bottom |
| Transverse resistance wire _ right | X1 | XP | X_Right |
| Longitudinal resistance wire _ up | Y2 | YP | Y_Up |
S3C2410X has 8 analog input channels, where channel 7 is the touch screen interface X coordinate input and channel 5 is the touch screen interface Y coordinate input. The S3C2410X has four control signals of nYPON, YMON, nXPON and XMON to control the on-off of 4 MOS transistors (S1, S2, S3 and S4) in the control diagram 13. The principle of detecting the touch position of the touch screen by the S3C2410X is as follows:
(1) when the touch screen is not pressed down, the transverse resistance wire X and the longitudinal resistance wire Y of the touch screen cannot be contacted together, S1, S2 and S4 are disconnected, and S3 is closed. The voltage of XP-XM on the whole axis of the transverse resistance wire X is 0V (GND), the longitudinal resistance wire YP is suspended, AIN5 of S3C2410X is in a high level, and S3C2410X is in a state of 'Pen Down Detect'.
(2) When the touch screen is pressed Down, after the transverse resistance wire X and the longitudinal resistance wire Y are contacted and conducted, the YP voltage is changed into a low level due to the fact that the YP voltage is communicated to XM grounding, the AIN5 presents the low level, and the event of 'Pen Down' is informed to S3C2410X as an interrupt trigger signal.
(3) Upon detection of the "Pen Down" event by S3C2410X, S3C2410X immediately enters the X-axis coordinate measuring state: s3 and S4 are closed, and S1 and S2 are open (namely YP and YM are suspended at two ends). Since the X-axis and the Y-axis have been pushed to communicate at the touch point, the YP terminal is inputted to the AIN5 terminal of S3C2410X as a voltage dividing point of XP-XM, and the AIN5 terminal potential is measured as the coordinate of the touch point on the X-axis.
(4) After the X-axis coordinate is measured, S1 and S2 are closed, S3 and S4 are opened, and the Y-axis coordinate of the touched point is measured in the same manner.
The S3C2410X touch screen controller has two modes of X/Y position conversion and X/Y position automatic conversion, and the invention adopts the X/Y position automatic conversion mode.
3. Data storage system
The data storage system of the controller 9 includes a 128M read only memory ROM42, a 128M random access memory RAM 43. The selected memory chip is a Hynix product, and the address space allocation at S3C2410X is shown in Table 5.
TABLE 5 memory address space allocation
| Name (R) | Model number | Capacity of | Address space allocation | Address segment |
| NAND Flash | HY27US08281A | 128M | Bank0 | 0x00000000～0x07FFFFFF |
| SDRAM | HY57V281620E(L)TP | 128M | Bank6 | 0x30000000～0x37FFFFFF |
4. Data communication
Referring to fig. 14, the communication unit 47 of the controller 9 employs a MC35i Cellular Engine (Cellular Engine) supporting GSM/GPRS by SIEMENS corporation, and the connection with the embedded microprocessor 41(S3C2410X) employs the connection recommended by the MC35i manual. The embedded microprocessor 41 realizes data communication with the R232 of the ZIF connector in the MC35i through an asynchronous serial communication interface (UART), and simultaneously, the SIM signal of the ZIF connector in the MC35i is connected with the SIM card to confirm the identity of the controller 9. The embedded microprocessor 41 controls and transmits data to the engine through the specific AT command of the MC35i, and transmits the collected physiological parameter data and risk factor status data to the community central server 2 through the communication unit 47, or receives the risk factor control amount data, etc. The parameters transmitted and received by the communication unit 47 are shown in table 6.
Table 6 communication unit 47 sends and receives parameters
When sending data, the embedded microprocessor 41 submits the turn-over mode and start stop data to the TCP/IP protocol stack, the TCP/IP protocol stack encapsulates the data into a complete IP data packet according to the destination address and the port, and submits the complete IP data packet to the PPP layer, and the IP data packet is encapsulated by the PPP layer, submitted to the MC35i byte by byte through the serial port, and sent to the remote controller 10. When receiving data, the MC35i first submits the received data from the remote controller 10 to the PPP layer byte by byte, and then submits the data to the TCP/IP layer for detailed processing after the PPP layer reassembles the scattered bytes into a complete IP packet.
Example 4:
the intelligent nursing air cushion bed has three modes of horizontal position, right side turning, left side turning and the like. The mode is selected and input to the embedded microprocessor 41 through the touch screen 44 of the controller 9, and the right torso air cushion control signal, the right hip air cushion control signal, the right limb air cushion control signal, the right base air cushion control signal, the left limb air cushion control signal, the left hip air cushion control signal and the left torso air cushion control signal are respectively output at 8 interfaces through the I/O interface after the operation processing of the embedded microprocessor 41. These 8 control signals output different "high" or "low" levels at different time periods to control the "inflation" or "deflation" of the air cells in the corresponding 8 air cushion cells. The control principle is described below with reference to timing diagrams of three modes of 8 control signals.
See fig. 15 for a horizontal position mode. When the control signals are at T1, 8 control signals are all at "low" level, and corresponding 8 air cushion units are not inflated, which indicates that the nursing air cushion bed is in "standby" state. At time T2, the right and left base air cushion control signals are at "high" level, the other control signals are at "low" level, and the corresponding right and left base air cushion units 4 and 5 are in "inflated" state, so that the upper air cushion bed is in operation, left-right symmetry, and in horizontal state. The duration of T2, which determines the length of time for the "inflated" state, is determined by the embedded microprocessor 41 based on the weight calculation process of the bedridden person. Typically 5 minutes to 2 hours. At time T3, the right and left base air cushion control signals are at a "low" level, indicating that the right and left base air cushion cells 4 and 5 are in a "deflated" state and the care air cushion bed returns to a "standby" state.
See fig. 16, for a right-side flip mode. When the control signals are at T1, 8 control signals are all at "low" level, and corresponding 8 air cushion units are not inflated, which indicates that the nursing air cushion bed is in "standby" state. At time T2, the right base air cushion control signal is at a "high" level, the other control signals are at a "low" level, and the corresponding right base air cushion cell 4 is "inflated"; then, at the time of T3, the control signal of the left base air cushion is at "high" level, and the corresponding left base air cushion unit 5 is "inflated" for adjusting the position of the person lying in bed, so that the person lying in bed is located in the middle of the intelligent nursing air cushion bed. The time for T2 and T3 was 0 to 10 minutes. At time T4, the left torso air cushion control signal is "high" level, and the corresponding left torso air cushion unit 8 is "inflated"; at time T5, the left hip air cushion control signal is "high" level, and the corresponding left hip air cushion unit 7 is "inflated"; at time T6, the left limb air cushion control signal is at a "high" level and the corresponding left limb air cushion unit 6 is "inflated". The time difference of T4 and T5 is arranged among the left trunk air bag 148, the left hip air bag 147 and the left limb air bag 146, so that the bedridden person turns over in the right direction. The time of T4, T5, T6 is 0 to 2 hours. At time T7, the control signals for the 5 already inflated cushion cells are all "low" indicating that the 5 corresponding air cells are all "deflated" and the care air cushion bed returns to the "standby" state.
See fig. 17, for a left-hand flip mode. When the control signals are at T1, 8 control signals are all at "low" level, and corresponding 8 air cushion units are not inflated, which indicates that the nursing air cushion bed is in "standby" state. At time T2, the left base air cushion control signal is at "high" level, the other control signals are at "low" level, and the corresponding left base air cushion cell 5 is "inflated"; then, at the time of T3, the control signal of the right base air cushion is "high" level, and the corresponding right base air cushion unit 4 is "inflated" for adjusting the position of the person lying in bed, so that the person lying in bed is located in the middle of the intelligent nursing air cushion bed. The time for T2 and T3 was 0 to 10 minutes. At time T4, the right torso air cushion control signal is "high" level, and the corresponding right torso air cushion unit 1 is "inflated"; at time T5, the right hip air cushion control signal is "high" level, and the corresponding right hip air cushion unit 2 is "inflated"; at time T6, the right limb cushion control signal is "high" and the corresponding right limb cushion unit 3 is "inflated". The time difference of T4 and T5 is kept between the left and the right torso air bags 141, the right hip air bag 142 and the right limb air bag 143, so that the bedridden person turns over to the left. The time of T4, T5, T6 is 0 to 2 hours. At time T7, the control signals for the 5 already inflated cushion cells are all "low" indicating that the 5 corresponding air cells are all "deflated" and the care air cushion bed returns to the "standby" state.
Claims (10)
1. The utility model provides an intelligence nursing air mattress, its characterized in that, by right truck air cushion unit (1), right buttock air cushion unit (2), right limb air cushion unit (3), right basis air cushion unit (4), left basis air cushion unit (5), left limb air cushion unit (6), left buttock air cushion unit (7), left truck air cushion unit (8), controller (9), remote controller (10) are constituteed, 8 control signal of controller (9) output, are respectively: the right trunk air cushion control signal, the right buttock air cushion control signal, the right limb air cushion control signal, the right base air cushion control signal, the left limb air cushion control signal, the left buttock air cushion control signal, the left trunk air cushion control signal, and respectively with the right trunk air cushion unit (1), the right buttock air cushion unit (2), the right limb air cushion unit (3), the right base air cushion unit (4), the left base air cushion unit (5), the left limb air cushion unit (6), the left buttock air cushion unit (7), the signal input part of the left trunk air cushion unit (8) is connected, the remote controller (10) carries out information exchange with the controller (9) through the form of wireless communication.
2. The intelligent nursing air mattress according to claim 1, wherein the right torso air cushion unit (1), the right hip air cushion unit (2), the right limb air cushion unit (3), the right base air cushion unit (4), the left base air cushion unit (5), the left limb air cushion unit (6), the left hip air cushion unit (7) and the left torso air cushion unit (8) have the same structural composition and are all composed of an air pump (11), a three-way solenoid valve (12), a communication pipe (13), an air bag (14) and a D trigger (15).
3. An intelligent nursing air mattress according to claim 2, characterized in that in one air mattress unit, the air mattress control signal output from the controller (9) is connected with the control input of the air pump (11) and the input of the D trigger (15), the output of the D trigger (15) is connected with the control input of the three-way solenoid valve (12), the air outlet of the air pump (11) is connected with the air inlet of the three-way solenoid valve (12), the air outlet of the three-way solenoid valve (12) is connected with the air inlet of the air bag (14) through the communicating pipe (13), the other air outlet of the three-way solenoid valve (12) is open to the atmosphere, the air mattress control signal output by the controller (9) is "high" level for "inflation" and "low" level for "deflation".
4. The intelligent nursing air mattress according to claim 1 or 2, wherein the right torso air cushion unit (1), the right hip air cushion unit (2), the right limb air cushion unit (3), the right base air cushion unit (4), the left base air cushion unit (5), the left limb air cushion unit (6), the left hip air cushion unit (7) and the left torso air cushion unit (8) correspond to a right torso air bag (141), a right hip air bag (142), a right limb air bag (143), a right base air bag (144), a left base air bag (145), a left limb air bag (146), a left hip air bag (147) and a left torso air bag (148).
5. The intelligent nursing air mattress of claim 1, wherein the intelligent nursing air mattress is divided into two layers, namely, a right trunk area (21), a right hip area (22), a right limb area (23), a left limb area (24), a left hip area (25), a left trunk area (26) and a communication tube area (27)7 areas, the upper layer is provided with two air bags, namely a right basic air bag (144) and a left basic air bag (145), the lower layer is provided with six air bags, namely, a right trunk air bag (141), a right hip air bag (142), a right limb air bag (143), a left limb air bag (146), a left hip air bag (147) and a left trunk air bag (148), and all the air cushion unit communication tubes (13) are arranged in the communication tube area (27) and connected to corresponding air cushion units.
6. The intelligent nursing air mattress according to claim 1, wherein the air bag sizes of the right basic air bag (144) and the left basic air bag (145) distributed on the upper layer of the air mattress are 196cm long, 54cm wide and 15cm high, the air bags are hot-melted by using a film-pressing hot-melting process to connect the upper and lower layers of bag walls, the hot-melting width is 3mm, three areas of a trunk area (31), a hip area (32) and a limb (33) in the radial direction are formed, four areas of an inner area (34), a secondary inner area (35), a secondary outer area (36) and an outer area (37) in the transverse direction are 12 areas, the sizes of the 12 areas are that the trunk area (31) is 40-80 cm long, the hip area (32) is 30-60 cm long, the limb area (33) is 40-80 cm long, the inner area (34) is 5-10 cm wide, the secondary inner area (35) is 10-13 cm wide, and the secondary outer area (36) is 13-17 cm wide, the outer zone (37) is 17-30 cm wide, the air bags of the two units form a triangular air bag with an included angle of 15-30 degrees in an inflated state, and the right basic air bag (144) and the left basic air bag (145) are axially symmetrical.
7. The intelligent nursing air mattress according to claim 1, characterized in that the right torso air bag (141), the right hip air bag (142), the right limb air bag (143), the left limb air bag (146), the left hip air bag (147), and the left torso air bag (148) distributed on the lower layer of the air mattress are placed in the corresponding right torso area (21), the right hip area (22), the right limb area (23), the left limb area (24), the left hip area (25), and the left torso area (26), the right torso air bag (141), the right limb air bag (143), the left limb air bag (146), and the left torso air bag (148) have four air bag sizes of 40-80 cm long, 20-40 cm wide, and 15-30 cm high, the right hip air bag (142), and the left hip air bag (147) sizes of 20-50 cm long, 20-40 cm wide, and 15-30 cm high, and these air bags form a triangular air bag included angle of 30-60 degrees in an "inflated" state, the corresponding left and right air bags have the same inflation structure and are axisymmetric.
8. The intelligent nursing air mattress of claim 1, wherein the four sides of the air mattress are provided with binding holes for binding the mattress on the sickbed.
9. The intelligent nursing air mattress according to claim 1, wherein the intelligent nursing air mattress has three modes of horizontal position, right side turn-over and left side turn-over, and the three modes depend on the right torso air cushion control signal, the right hip air cushion control signal, the right limb air cushion control signal, the right base air cushion control signal, the left limb air cushion control signal, the left hip air cushion control signal and the left torso air cushion control signal to output different high or low levels at different time periods, so as to control the air bags in the corresponding 8 air cushion units to be inflated or deflated, thereby achieving the purpose of turn-over.
10. The intelligent nursing air mattress of claim 9, wherein the lying position mode is that when the control signals are at T1, 8 control signals are all at "low" level, corresponding 8 air cushion units are not inflated, and the air mattress bed is in "standby" state; at the time phase of T2, the right and left base air cushion control signals are at "high" level, the other control signals are at "low" level, the upper air cushion bed is in operation, and is in bilateral symmetry and horizontal state; the duration of T2, which determines the length of time for the "inflated" state, is typically 5 minutes to 2 hours; at the time of T3, the right and left base air cushion control signals are at 'low' level, the right base air cushion unit (4) and the left base air cushion unit (5) are in 'deflation' state, and the nursing air cushion bed is recovered to 'standby' state; the right side turning mode is that when the control signal is at T1, 8 control signals are all at 'low' level, corresponding 8 air cushion units are not inflated, and the air cushion bed is in 'standby' state; at time T2, the right base air cushion control signal is at "high" level, the other control signals are at "low" level, and the corresponding right base air cushion cell (4) "inflates"; thereafter, at time T3, the left base cushion control signal is at a "high" level, the corresponding left base cushion cell (5) is "inflated", and the time for T2 and T3 is 0 to 10 minutes; at time T4, the left torso air cushion control signal is "high" level, and the corresponding left torso air cushion unit (8) is "inflated"; at time T5, the left hip air cushion control signal is "high" level, and the corresponding left hip air cushion unit (7) is "inflated"; at the time of T6, the left limb air cushion control signal is at ' high ' level, the corresponding left limb air cushion unit (6) is inflated ', and the time of T4, T5 and T6 is 0-2 hours; at the time of T7, the control signals of 5 inflated air cushion units are all at "low" level, 5 corresponding air bags are all "deflated", and the air cushion bed is restored to the "standby" state; the left side turnover mode is that the control signals are at the time phase of T1, 8 control signals are all at 'low' level, corresponding 8 air cushion units are not inflated, the air cushion bed is in a 'standby' state, at the time phase of T2, the left basic air cushion control signal is at 'high' level, other control signals are at 'low' level, and corresponding left basic air cushion unit 5 is inflated; thereafter, at time T3, the right base cushion control signal is at a "high" level, the corresponding right base cushion cell (4) is "inflated", the time for T2 and T3 is 0 to 10 minutes, at time T4, the right torso cushion control signal is at a "high" level, the corresponding right torso cushion cell 1 is "inflated"; at time T5, the right hip air cushion control signal is "high" level, and the corresponding right hip air cushion unit 2 is "inflated"; at time T6, the right limb cushion control signal is "high" level, the corresponding right limb cushion unit 3 is "inflated", the time of T4, T5 and T6 is 0 to 2 hours, at time T7, the control signals of 5 inflated cushion units are all "low" level, 5 corresponding air bags are all "deflated", and the air cushion bed is returned to "standby" state.
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