CN106176103B - A kind of turn control circuit of counteracting bedsores airbed - Google Patents
A kind of turn control circuit of counteracting bedsores airbed Download PDFInfo
- Publication number
- CN106176103B CN106176103B CN201610625073.9A CN201610625073A CN106176103B CN 106176103 B CN106176103 B CN 106176103B CN 201610625073 A CN201610625073 A CN 201610625073A CN 106176103 B CN106176103 B CN 106176103B
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- China
- Prior art keywords
- solid
- feet
- oscillation device
- state relay
- unstable oscillation
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Classifications
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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
Abstract
The invention discloses a kind of turn control circuits of counteracting bedsores airbed, including the first unstable oscillation device, the second unstable oscillation device, single pole double throw analog switch, the first solid-state relay and the second solid-state relay；The output end of first unstable oscillation device is electrically connected with the common end that single pole double throw analog switchs；The output end of second unstable oscillation device is electrically connected with the control terminal that single pole double throw analog switchs；The normally open end of single pole double throw analog switch is electrically connected with the control terminal anode of the first solid-state relay；The normal-closed end of single pole double throw analog switch is electrically connected with the control terminal anode of the second solid-state relay；The anode of the controlled end cathode of first solid-state relay and the controlled end cathode of the second solid-state relay respectively with the solenoid valve on the left and right side pipeline on airbed connects one to one.The present invention can realize that counteracting bedsores airbed left and right sides gas circuit replaces the function for rest of inflating, deflate and lie low.
Description
Technical field
The invention belongs to antidecubitus beds, and in particular to a kind of turn control circuit of counteracting bedsores airbed.
Background technology
Bedsore is patient with severe symptoms's common disease to be faced.In order to reduce the generation of this disease, antidecubitus beds have been invented.
There are two types of the control modes of existing antidecubitus beds：Manual mode and self-action, the former needs nursing staff to go the turn of timing bed body
Operation control member, the latter generally use automatic control unit to control turn action.There are two types of shapes for automatic control unit
Formula, a kind of that microcontroller is used to be controlled for core, the intellectual nursing bed and CN of one kind recorded such as CN 105534657A
The timing turning over multifunctional bedsore-proof bed that 204618651U is recorded；Another is controlled using bistable oscillation circuit, such as
The alternating inflatable anti-bedsore mattress that CN 102160837A are recorded.The advantage of microcontroller control mode be control turn over when
Between it is arbitrary adjustable, deficiency is complex circuit designs, need to write SCM program and later period maintenance difficulty is larger.Bistable state
The advantage of control circuit is that circuit design is simple, need not write program, safeguarding that simply deficiency is to realize that side is filled
Other side starts to inflate at once after full gas, does not meet actual demand.Should be that side first inflates, deflates, resting one in practice
Then the section time controls other side and realizes same process again.
Therefore, it is necessary to develop a kind of turn control circuit of new counteracting bedsores airbed.
Invention content
The object of the present invention is to provide a kind of turn control circuits of counteracting bedsores airbed, can realize that counteracting bedsores is filled
Pneumatic mattress left and right sides gas circuit replaces the function for rest of inflating, deflate and lie low.
The turn control circuit of counteracting bedsores airbed of the present invention, including the first unstable oscillation device,
Two unstable oscillation devices, single pole double throw analog switch, the first solid-state relay, the second solid-state relay, the first power supply and second
Power supply；
The first unstable oscillation device, the second unstable oscillation device, single pole double throw analog switch are supplied by the first power supply
Electricity；
The output end of the first unstable oscillation device is electrically connected with the common end that single pole double throw analog switchs；
The output end of the second unstable oscillation device is electrically connected with the control terminal that single pole double throw analog switchs；
The normally open end of the single pole double throw analog switch is electrically connected with the control terminal anode of the first solid-state relay；
The normal-closed end of the single pole double throw analog switch is electrically connected with the control terminal anode of the second solid-state relay；
Controlled end anode, the controlled end anode of the second solid-state relay of first solid-state relay are electric with second respectively
Source anode electrical connection, the controlled end cathode of the first solid-state relay, the controlled end cathode of the second solid-state relay respectively with fill
The anode of the solenoid valve on left and right side pipeline on pneumatic mattress connects one to one.
Further, the output signal of the first unstable oscillation device is rectangular wave, the output of the second unstable oscillation device
Signal is square wave, and the cycle T 2 of square wave is twice of the cycle T 1 of rectangular wave, and rectangular wave have with the sequential of square wave it is synchronous
Property.
Further, the preceding half period start-stop simultaneously in i-th of period in the 2i-1 period and square wave of the rectangular wave,
The second half of the cycle start-stop simultaneously in 2i period of the rectangular wave and i-th of period of square wave, i are positive integer.
Further, first solid-state relay and the second solid-state relay are the big direct current of small DC voltage control
The solid-state relay of pressure.
Further, the function of the first unstable oscillation device and the second unstable oscillation device is realized by chip CD4047,
4 feet, 5 feet, 6 feet, 14 feet of chip CD4047 connect the anode of the first power supply, 7 feet, 8 feet, 9 feet, 12 feet of chip CD4047 respectively
The cathode for connecing the first power supply respectively, in 1 foot of chip CD4047 and the indirect capacitance C of 3 feet, in 2 feet and 3 feet of chip CD4047
Indirect resistance R, so that chip CD4047 is operated in unstable state state, 13 feet of chip CD4047 are the first unstable oscillation device 1
Output end, 10 feet of chip CD4047 are the output end of the second unstable oscillation device 2.
Beneficial effects of the present invention：
（1）It can realize that side first inflates, deflates, resting a period of time, then control other side again and realize similarly
Process makes it be more suitable for actual demand；
（2）Entire circuit includes mainly chip CD4047, chip MAX4544 and two solid-state relays, required electronics
The quantity of component is considerably less, therefore circuit structure is very simple, at low cost, and the stability of entire circuit is also very good, and the later stage
It safeguards simple；
（3）Single-chip microcomputer control program need not be write；
In conclusion the present invention realizes the turn action control of counteracting bedsores airbed, and circuit structure is very simple.
Description of the drawings
Fig. 1 is the circuit structure diagram of the present invention；
Fig. 2 is the circuit diagram of the first unstable oscillation device and the second unstable oscillation device in the present invention；
Fig. 3 is the internal structure chart that single pole double throw analog switchs in the present invention；
In figure：1, the first unstable oscillation device, the 2, second unstable oscillation device, 3, single pole double throw analog switch, 4, first
Solid-state relay, the 5, second solid-state relay, the 6, first power supply, 7, second source.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
The turn control circuit of counteracting bedsores airbed as shown in Figure 1, including the first unstable oscillation device 1,
Two unstable oscillation devices 2, single pole double throw analog switch 3, the first solid-state relay 4, the second solid-state relay 5,6 and of the first power supply
Second source 7.Wherein, for single pole double throw analog switch 3 other than power end and ground terminal, there are four function ends, respectively public
Total end, control terminal, normally open end and normal-closed end.First power supply 6 is direct current 5V, and second source 7 is direct current 24V.
As shown in Figure 1, the first unstable oscillation device 1, the second unstable oscillation device 2, single pole double throw analog switch 3, first
Solid-state relay 4, the second solid-state relay 5, the connection relation of the first power supply 6 and second source 7 are as follows：
First power supply 6 anode respectively with the first unstable oscillation device 1, the second unstable oscillation device 2 and single-pole double throw mould
The power pins electrical connection of quasi- switch 3.First unstable oscillation device 1, the second unstable oscillation device 2 and single pole double throw analog switch
3 ground pin connects by the way of altogether.The public affairs of the output end and single pole double throw analog switch 3 of first unstable oscillation device 1
End electrical connection altogether.The output end of second unstable oscillation device 2 is electrically connected with the control terminal of single pole double throw analog switch 3.Work as hilted broadsword
When the control terminal of double-throw analog switch 3 is high level, common end is connected with normally open end, when the control of single pole double throw analog switch 3
When end processed is low level, common end is connected with normal-closed end.The output signal of first unstable oscillation device 1 be rectangular wave, second
The output signal of unstable oscillation device 2 is square wave, and the cycle T 2 of square wave is twice of the cycle T 1 of rectangular wave.Single-pole double throw mould
The normally open end of quasi- switch 3 is electrically connected with the control terminal anode of the first solid-state relay 4.The normal-closed end of single pole double throw analog switch 3
It is electrically connected with the control terminal anode of the second solid-state relay 5.The controlled end anode of first solid-state relay 4, the second solid-state relay
The controlled end anode of device 5 is electrically connected with the anode of second source 7 respectively, and the controlled end cathode of the first solid-state relay 4, second are consolidated
The controlled end cathode of state relay 5 is corresponded with the anode of the solenoid valve on the left and right side pipeline on airbed respectively to be connected
It connects, is respectively used to the control that left and right side pipeline solenoid is opened and closed on airbed.
As shown in Fig. 2, the function of the first unstable oscillation device and the second unstable oscillation device is realized by chip CD4047, it will
4 feet, 5 feet, 6 feet, 14 feet of chip CD4047 connect the anode of the first power supply 6 respectively, by 7 feet of chip CD4047,8 feet, 9 feet,
12 feet connect the cathode of the first power supply 6 respectively, in 1 foot of chip CD4047 and the indirect capacitance C of 3 feet, in 2 feet of chip CD4047
With the indirect resistance R of 3 feet, chip CD4047 is made to be operated in unstable state state, is in the 10 feet output period of chip CD4047
The square wave of 4.4RC, the square wave for being 2.2RC in the 13 feet output period of chip CD4047, which is the first unstable oscillation device 1
Output end, 10 foot be the second unstable oscillation device 2 output end.Chip CD4047 by 13 feet, 10 feet respectively with hilted broadsword
The common end of double-throw analog switch, control terminal are electrically connected one by one.It, can when the output end of first unstable oscillation device 1 is high level
It controls the solenoid valve in certain left and right side mattress gas circuit and opens realization inflation, when the output end of the first unstable oscillation device 1 is low
When level, corresponding electromagnetic valve of gas circuit can be controlled and closed, realize air cushion deflation and the rest that lies low.
The rectangular wave and the square wave of its 10 foot output of the 13 feet output of chip CD4047 have synchronism in sequential, specifically
For：The preceding half period start-stop simultaneously in 2i-1 period of rectangular wave and i-th of period of square wave, the 2i week of rectangular wave
The second half of the cycle start-stop simultaneously of phase and i-th of period of square wave, i is positive integer.It is acted in the turn of counteracting bedsores airbed
Control circuit after the power is turned on, before a cycle of the square wave of a cycle and 10 the feet output of the rectangular wave of 13 feet output
After a cycle of half period start-stop simultaneously, the second period of the rectangular wave of 13 feet output and the square wave of 10 feet output
Half period start-stop simultaneously, the square wave that rectangular wave and 10 feet of the output of 13 feet export the period below also in compliance with it is same when
Sequence.When the square wave of 10 feet output is high level, rectangular wave that 13 feet exports to wherein side gas circuit solenoid valve, when 10 feet
When the square wave of output is low level, rectangular wave that 13 feet are exported to other side gas circuit solenoid valve, to realize left and right sides gas
The alternating inflation on road is deflated and the rest process that lies low.
In the turn control circuit of counteracting bedsores airbed of the present invention, the first unstable oscillation device 1 is realized
Peripheral resistance R values with the CD4047 chips of the second unstable oscillation device 2 are 1M Ω（The value of resistance R can be according to inflation
The length of time is adjusted, and is not limited to 1M Ω）, capacitance C is the polarity free capacitor of 470uF（The value of capacitance C can be according to filling
The length of gas time is adjusted, and is not limited to 470uF）.
As shown in figure 3, the single pole double throw analog switch 3 uses chip MAX4544,8 feet of chip MAX4544 are electricity
Source pin, 4 feet are ground, and 1 foot is normally open end, and 2 feet are common end, and 3 feet are normal-closed end, and 7 feet are held in order to control, when 7 feet are low level,
2 feet are connected with 3 feet, and when 7 feet are high level, 2 feet are connected with 1 foot.
In the present embodiment, first solid-state relay 4, the second solid-state relay 5 are that small DC voltage control is straight greatly
The solid-state relay of galvanic electricity pressure, such as：Mage that solid-state relay JGX-1FA.The control terminal anode of first solid-state relay 4,
The control terminal anode of second solid-state relay 5 connects one to one with 1 foot of chip MAX4544 and 3 feet respectively, i.e.,：When first
When the control terminal anode of solid-state relay 4 is connect with 1 foot of chip MAX4544, the control terminal anode of the second solid-state relay 5 with
3 feet of chip MAX4544 connect.
After testing, based on the control circuit that said elements are built can realize airbed left and right sides gas circuit alternately inflation,
The function of deflating and rest, for unilateral gas circuit, inflationtime is about 17 minutes, deflates and time of having a rest summation is about 17 points
Clock realizes the turn action control of counteracting bedsores airbed based on unstable oscillation device.
Claims (3)
1. a kind of turn control circuit of counteracting bedsores airbed, it is characterised in that：Including the first unstable oscillation device
（1）, the second unstable oscillation device（2）, single pole double throw analog switch（3）, the first solid-state relay（4）, the second solid-state relay
（5）, the first power supply（6）And second source（7）；
The first unstable oscillation device（1）, the second unstable oscillation device（2）, single pole double throw analog switch（3）By the first power supply
（6）Power supply；
The first unstable oscillation device（1）Output end and single pole double throw analog switch（3）Common end electrical connection；
The second unstable oscillation device（2）Output end and single pole double throw analog switch（3）Control terminal electrical connection；
The single pole double throw analog switch（3）Normally open end and the first solid-state relay（4）Control terminal anode electrical connection；
The single pole double throw analog switch（3）Normal-closed end and the second solid-state relay（5）Control terminal anode electrical connection；
First solid-state relay（4）Controlled end anode, the second solid-state relay（5）Controlled end anode respectively with second
Power supply（7）Anode electrical connection, the first solid-state relay（4）Controlled end cathode, the second solid-state relay（5）Controlled end it is negative
Anode of the pole respectively with the solenoid valve on the left and right side pipeline on airbed connects one to one；
The first unstable oscillation device（1）Output signal be rectangular wave, the second unstable oscillation device（2）Output signal be
Square wave, the cycle T 2 of square wave is twice of the cycle T 1 of rectangular wave, and the sequential of rectangular wave and square wave has synchronism；
The preceding half period start-stop simultaneously in 2i-1 period of the rectangular wave and i-th of period of square wave, the rectangular wave
2i period and square wave i-th of period second half of the cycle start-stop simultaneously, i is positive integer.
2. the turn control circuit of counteracting bedsores airbed according to claim 1, it is characterised in that：Described first
Solid-state relay（4）, the second solid-state relay（5）It is the solid-state relay of the big DC voltage of small DC voltage control.
3. the turn control circuit of counteracting bedsores airbed according to claim 1 or 2, it is characterised in that：It is described
First unstable oscillation device（1）With the second unstable oscillation device（2）Function realized by chip CD4047, the 4 of chip CD4047
Foot, 5 feet, 6 feet, 14 feet connect the first power supply respectively（6）Anode, 7 feet, 8 feet, 9 feet, 12 feet of chip CD4047 connect first respectively
Power supply（6）Cathode, it is indirectly in 2 feet of chip CD4047 and 3 feet in 1 foot of chip CD4047 and the indirect capacitance C of 3 feet
Resistance R makes chip CD4047 be operated in unstable state state, and 13 feet of chip CD4047 are the first unstable oscillation device（1）It is defeated
10 feet of outlet, chip CD4047 are the second unstable oscillation device（2）Output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610625073.9A CN106176103B (en) | 2016-08-03 | 2016-08-03 | A kind of turn control circuit of counteracting bedsores airbed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610625073.9A CN106176103B (en) | 2016-08-03 | 2016-08-03 | A kind of turn control circuit of counteracting bedsores airbed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106176103A CN106176103A (en) | 2016-12-07 |
| CN106176103B true CN106176103B (en) | 2018-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610625073.9A Expired - Fee Related CN106176103B (en) | 2016-08-03 | 2016-08-03 | A kind of turn control circuit of counteracting bedsores airbed |
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| Country | Link |
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| CN (1) | CN106176103B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036319A (en) * | 1988-04-08 | 1989-10-18 | 北京信息工程学院 | Pneumatic turning-over apparatus |
| CN2339202Y (en) * | 1998-04-17 | 1999-09-22 | 王宪 | Air-inflating device for nursing patient lying in bed |
| CN204364270U (en) * | 2014-12-02 | 2015-06-03 | 湖州市第三人民医院 | The side-lying bed that a kind of assisting patient stands up |
| CN206167250U (en) * | 2016-08-03 | 2017-05-17 | 中国人民解放军第三军医大学第二附属医院 | Prevent bedsore air mattress's movement control circuit that stands up |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11313859A (en) * | 1998-05-01 | 1999-11-16 | Care Supply Japan Kk | Nursing mattress |
| JP2002143233A (en) * | 2000-11-07 | 2002-05-21 | Pigeon Corp | Posture retaining pad |
-
2016
- 2016-08-03 CN CN201610625073.9A patent/CN106176103B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036319A (en) * | 1988-04-08 | 1989-10-18 | 北京信息工程学院 | Pneumatic turning-over apparatus |
| CN2339202Y (en) * | 1998-04-17 | 1999-09-22 | 王宪 | Air-inflating device for nursing patient lying in bed |
| CN204364270U (en) * | 2014-12-02 | 2015-06-03 | 湖州市第三人民医院 | The side-lying bed that a kind of assisting patient stands up |
| CN206167250U (en) * | 2016-08-03 | 2017-05-17 | 中国人民解放军第三军医大学第二附属医院 | Prevent bedsore air mattress's movement control circuit that stands up |
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| Publication number | Publication date |
|---|---|
| CN106176103A (en) | 2016-12-07 |
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Granted publication date: 20181009 Termination date: 20200803 |
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