CN210447450U - Pressure sore prevention system based on pressure distributed measurement technology - Google Patents
Pressure sore prevention system based on pressure distributed measurement technology Download PDFInfo
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- CN210447450U CN210447450U CN201921129317.XU CN201921129317U CN210447450U CN 210447450 U CN210447450 U CN 210447450U CN 201921129317 U CN201921129317 U CN 201921129317U CN 210447450 U CN210447450 U CN 210447450U
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Abstract
The utility model discloses a pressure sore prevention system based on pressure distributing type measurement technique, including thin pad, lay respectively in thin pad, four film pressure sensor for detecting bed patient's head, shoulder and buttock pressure, first to fourth pressure acquisition circuit who is connected with first to fourth film pressure sensor respectively, microprocessor U1 who is connected with the output one-to-one of first pressure acquisition circuit to fourth pressure acquisition circuit, the reset circuit who is connected with microprocessor U1 respectively, alarm circuit, pull-up resistance row RP1, first LED lamp indicating circuit, second LED lamp indicating circuit, third LED lamp indicating circuit, fourth LED lamp indicating circuit and LCD display screen. By the proposal, the utility model has the advantages of simple structure, detection are reliable, have very high practical value and spreading value pressing sore prevention technical field.
Description
Technical Field
The utility model belongs to the technical field of the pressure sore prevention technique and specifically relates to a pressure sore prevention system based on pressure distributed measurement technique.
Background
Pressure sores are pains which disturb patients lying in bed for a long time, not only can affect the life quality of the patients, but also can affect the body health of the patients, and are clinical symptoms which need to be paid attention to and prevented urgently in current medical work. The problems that how to more effectively prevent pressure sores and how to further improve the living quality of long-term bedridden patients under the conditions that the number of medical staff is insufficient in departments such as hospitals and nursing homes and the like, and that families or nursing staff are careless are to be solved urgently are solved at present. However, the existing system for preventing pressure sores is not related in the market, and the time of a specific pressure part of a bedridden patient cannot be tested and timed.
Therefore, there is an urgent need to provide a pressure sore prevention system based on a pressure distributed measurement technology, which can give out a warning when the implantation time of each part exceeds different set times, prompt medical care personnel and family members to assist the patient to turn over, and shorten the action time of pressure on local tissues so as to achieve the prevention effect of pressure sore.
SUMMERY OF THE UTILITY MODEL
To the above problem, an object of the utility model is to provide a pressure sore prevention system based on pressure distributing type measurement technique, the utility model discloses a technical scheme as follows:
a pressure sore prevention system based on a pressure distributed measurement technology comprises a thin cushion for lying on bed of a bedridden patient, four FSR402 force-sensitive flexible series thin-film pressure sensors which are respectively arranged in the thin cushion and used for detecting the pressure of the head, the shoulders and the buttocks of the bedridden patient, a first pressure acquisition circuit, a second pressure acquisition circuit, a third pressure acquisition circuit and a fourth pressure acquisition circuit which are correspondingly connected with the four thin-film pressure sensors one by one, a microprocessor U1 of 89 AT 52 series, a reset circuit connected with a reset port RST of the microprocessor U1, an alarm circuit connected with a serial port P1.5, a pull-up resistor RP1 connected with the serial port P0 and a first LED lamp indicating circuit connected with the serial port P2.0, wherein the serial port P1.3 is connected with the output of the first pressure acquisition circuit, the second pressure acquisition circuit, the third pressure acquisition circuit and the fourth pressure acquisition circuit, a second LED light indicating circuit connected to serial port P2.1, a third LED light indicating circuit connected to serial port P2.2, a fourth LED light indicating circuit connected to serial port P2.3, and an LCD display screen connected to serial port P0.
The structure of the first pressure acquisition circuit, the structure of the second pressure acquisition circuit, the structure of the third pressure acquisition circuit and the structure of the fourth pressure acquisition circuit are the same, the first pressure acquisition circuit comprises a dual-path differential comparator U2 with the model number of LM393, a capacitor C5 with one end connected with a VCC pin of the dual-path differential comparator U2 and the other end grounded, and a first film pressure sensor input circuit connected with the dual-path differential comparator U2; the OUTA pin of the two-way differential comparator U2 is connected with the serial port P1.0 of the microprocessor U1.
The first film pressure sensor input circuit comprises a potentiometer R6 with a sliding end connected with an INA-pin of a double-way differential comparator U2, a capacitor C4 with one end connected with an INA + pin of a double-way differential comparator U2 and the other end grounded, and a resistor R5 connected with the INA + pin of the double-way differential comparator U2. The INA + pin of the two-way differential comparator U2 is connected to the first diaphragm pressure sensor N1.
Further, the alarm circuit comprises a triode Q1 with a base electrode connected with the serial port P1.5 of the microprocessor U1 and a collector electrode grounded, and an alarm buzzer BUZ1 connected with an emitter electrode of the triode Q1.
Furthermore, the reset circuit includes a resistor R11 having one end connected to the reset port RST of the microprocessor U1 and the other end connected to ground, a capacitor C3 connected to the reset port RST of the microprocessor U1, and a reset button KEY1 connected to both ends of the capacitor C3.
Furthermore, the first LED lamp indicating circuit comprises a resistor R4 and a light emitting diode D2 which are sequentially connected, and one end of the resistor R4 is connected with a serial port P2.0 of the microprocessor U1; the second LED lamp indicating circuit comprises a resistor R1 and a light emitting diode D1, wherein one end of the resistor R1 and one end of the light emitting diode D1 are connected with a serial port P2.1 of the microprocessor U1 in sequence; the third LED lamp indicating circuit comprises a resistor R2 and a light emitting diode D3, wherein one end of the resistor R2 and one end of the light emitting diode D3 are connected with a serial port P2.2 of the microprocessor U1 in sequence; the fourth LED lamp indicating circuit comprises a resistor R3 and a light emitting diode D4, wherein one end of the resistor R3 and one end of the light emitting diode D4 are connected with the serial port P2.3 of the microprocessor U1 in sequence.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses set up the pressure value that four film pressure sensor detected head, shoulder and buttock ingeniously to confirm that patient's bed is flat lie, the side crouches (head, a shoulder, buttock pressure indication or only head and buttock pressure indication), trigger when a certain film pressure sensor among four film pressure sensor and instruct that the flat time of lying exceeds the setting, trigger bee calling organ and send out police dispatch newspaper, the luminous suggestion of LED. Therefore, the medical care personnel and the family members can be prompted to assist the patient to turn over, and the action time of the pressure on the local tissue is shortened, so that the prevention effect of pressure sores is achieved. To sum up, the utility model has the advantages of simple structure, detect reliably, have very high practical value and spreading value pressing sore prevention technical field.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as a limitation of the scope of protection, and for those skilled in the art, other related drawings may be obtained from these drawings without inventive effort.
Fig. 1 is a schematic circuit diagram of the present invention.
Fig. 2 is a schematic diagram of a first pressure acquisition circuit according to the present invention.
Fig. 3 is a schematic diagram of a second pressure acquisition circuit according to the present invention.
Fig. 4 is a schematic diagram of a third pressure acquisition circuit of the present invention.
Fig. 5 is a schematic diagram of a fourth pressure acquisition circuit according to the present invention.
Detailed Description
To make the objectives, technical solutions and advantages of the present application more clear, the present invention will be further described with reference to the accompanying drawings and examples, and embodiments of the present invention include, but are not limited to, the following examples. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Examples
As shown in fig. 1 to fig. 5, the present embodiment provides a pressure sore prevention system based on a pressure distributed measurement technology, and it should be noted that the present embodiment is based on structural improvement, and does not improve a software program used in the present embodiment, and those skilled in the art can implement the pressure sore prevention system by using a conventional combination of program segments, which is not described herein again.
The pressure sore prevention system of the embodiment comprises a thin pad for lying on bed of a bedridden patient, four FSR402 force-sensitive flexible series thin-film pressure sensors which are respectively arranged in the thin pad and are used for detecting the pressure of the head, the shoulder and the hip of the bedridden patient, a first pressure acquisition circuit, a second pressure acquisition circuit, a third pressure acquisition circuit and a fourth pressure acquisition circuit which are correspondingly connected with the four thin-film pressure sensors one by one, an AT89C52 series microprocessor U1, a reset circuit connected with a reset port RST of the microprocessor U1, an alarm circuit connected with a serial port P1.5, a pull-up resistor RP1 connected with the serial port P0, and a first LED lamp indicating circuit connected with the serial port P2.0, wherein the serial port P1.3 is connected with the serial port P1.3, a second LED light indicating circuit connected to serial port P2.1, a third LED light indicating circuit connected to serial port P2.2, a fourth LED light indicating circuit connected to serial port P2.3, and an LCD display screen connected to serial port P0. The device comprises a first pressure acquisition circuit, a second pressure acquisition circuit, a third pressure acquisition circuit, a fourth pressure acquisition circuit, a microprocessor U1, a reset circuit, an alarm circuit, a pull-up resistor RP1, a first LED lamp indicating circuit, a second LED lamp indicating circuit, a third LED lamp indicating circuit, a fourth LED lamp indicating circuit and the like, wherein the first pressure acquisition circuit, the second pressure acquisition circuit, the third pressure acquisition circuit, the fourth pressure acquisition circuit, the microprocessor U1, the reset circuit, the alarm circuit, the pull-up resistor RP1, the first LED lamp indicating circuit, the second LED lamp indicating circuit.
The first pressure acquisition circuit is the same as the second pressure acquisition circuit, the third pressure acquisition circuit and the fourth pressure acquisition circuit in structure, and comprises a dual-path differential comparator U2 with the model number of LM393, a capacitor C5 with one end connected with a VCC pin of the dual-path differential comparator U2 and the other end grounded, and a first film pressure sensor input circuit connected with the dual-path differential comparator U2; the OUTA pin of the two-way differential comparator U2 is connected with the serial port P1.0 of the microprocessor U1, similarly, the OUTA pin of the two-way differential comparator U3 is connected with the serial port P1.1 of the microprocessor U1, the OUTA pin of the two-way differential comparator U4 is connected with the serial port P1.2 of the microprocessor U1, and the OUTA pin of the two-way differential comparator U5 is connected with the serial port P1.3 of the microprocessor U1. In addition, the first thin film pressure sensor input circuit includes a potentiometer R6 having a sliding end connected to the INA-pin of the two-way differential comparator U2, a capacitor C4 having one end connected to the INA + pin of the two-way differential comparator U2 and the other end grounded, and a resistor R5 connected to the INA + pin of the two-way differential comparator U2. The INA + pin of the two-way differential comparator U2 is connected to the first diaphragm pressure sensor N1. The alarm circuit comprises a triode Q1 with a base electrode connected with a serial port P1.5 of the microprocessor U1 and a collector electrode grounded, and an alarm buzzer BUZ1 connected with an emitting electrode of the triode Q1. The reset circuit comprises a resistor R11, one end of which is connected with a reset port RST of the microprocessor U1, and the other end of which is grounded, a capacitor C3 connected with the reset port RST of the microprocessor U1, and a reset button KEY1 connected with two ends of the capacitor C3. The first LED lamp indicating circuit comprises a resistor R4 and a light emitting diode D2, wherein one end of the resistor R4 and one end of the light emitting diode D2 are connected with a serial port P2.0 of the microprocessor U1 in sequence; the second LED lamp indicating circuit comprises a resistor R1 and a light emitting diode D1, wherein one end of the resistor R1 and one end of the light emitting diode D1 are connected with a serial port P2.1 of the microprocessor U1 in sequence; the third LED lamp indicating circuit comprises a resistor R2 and a light emitting diode D3, wherein one end of the resistor R2 and one end of the light emitting diode D3 are connected with a serial port P2.2 of the microprocessor U1 in sequence; the fourth LED lamp indicating circuit comprises a resistor R3 and a light emitting diode D4, wherein one end of the resistor R3 and one end of the light emitting diode D4 are connected with the serial port P2.3 of the microprocessor U1 in sequence.
The working principle of the system is briefly explained as follows:
the device adopts direct current +5V power supply and supplies power to a microcontroller U1, a two-way differential comparator U2, a two-way differential comparator U3, a two-way differential comparator U4 and a two-way differential comparator U5; assuming that the patient does not lie on the thin cushion and is in the initial state, the four thin film pressure sensors all output high level signals, the serial ports P1.0-P1.3 of the microprocessor U1 all input high levels, and the microcontroller U1 is in an action state of not triggering;
when a patient lies on the thin cushion, the body of the patient presses on the four thin film pressure sensors, the working pressure measured by the FSR402 force sensing flexible series thin film pressure sensors is 20g-6kG, and according to the relation among resistance, conductance and voltage of the FSR402 force sensing flexible series thin film pressure sensors (in the prior art), when the pressure measured by the thin film pressure sensors is more than 1kG, the four thin film pressure sensors all output low level, the low level is input into serial ports P1.0-P1.3 of a microprocessor U1, an LCD display screen starts to time, 4 groups of time can simultaneously appear on the screen, when one group of time exceeds the initial set one hour, the corresponding LED lamps (namely diodes) are lightened, two ends of a buzzer are changed into high level, so that medical care personnel and family members can be prompted to assist the patient to turn over, the pressure of a specific pressed part is emphatically relieved, and a software program related in the working principle is not an improvement point of the technology, which is a conventional procedure and will not be described herein.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and are not limitations on the protection scope of the present invention, but all the changes made by adopting the design principle of the present invention and performing non-creative work on this basis shall fall within the protection scope of the present invention.
Claims (4)
1. A pressure sore prevention system based on a pressure distributed measurement technology comprises a thin cushion for lying on bed of a bedridden patient, and is characterized by further comprising four FSR402 force sensing flexible series thin film pressure sensors which are respectively arranged in the thin cushion and used for detecting the pressure of the head, the shoulder and the hip of the bedridden patient, a first pressure acquisition circuit, a second pressure acquisition circuit, a third pressure acquisition circuit and a fourth pressure acquisition circuit which are correspondingly connected with the four thin film pressure sensors one by one, an AT89C52 series microprocessor U1, a reset circuit connected with a reset port RST of the microprocessor U1, an alarm circuit connected with a serial port P1.5 and a pull-up resistor discharge 1 connected with the serial port P0, wherein the serial port P1.3 is respectively connected with the first pressure acquisition circuit, the second pressure acquisition circuit, the third pressure acquisition circuit and the fourth pressure acquisition circuit in a one-to-one correspondence manner, a first LED lamp indicating circuit connected with the serial port P2.0, a second LED lamp indicating circuit connected with the serial port P2.1, a third LED lamp indicating circuit connected with the serial port P2.2, a fourth LED lamp indicating circuit connected with the serial port P2.3, and an LCD display screen connected with the serial port P0;
the structure of the first pressure acquisition circuit, the structure of the second pressure acquisition circuit, the structure of the third pressure acquisition circuit and the structure of the fourth pressure acquisition circuit are the same, the first pressure acquisition circuit comprises a dual-path differential comparator U2 with the model number of LM393, a capacitor C5 with one end connected with a VCC pin of the dual-path differential comparator U2 and the other end grounded, and a first film pressure sensor input circuit connected with the dual-path differential comparator U2; the OUTA pin of the two-way differential comparator U2 is connected with a serial port P1.0 of the microprocessor U1;
the first film pressure sensor input circuit comprises a potentiometer R6 with a sliding end connected with an INA-pin of a double-way differential comparator U2, a capacitor C4 with one end connected with an INA + pin of a double-way differential comparator U2 and the other end grounded, and a resistor R5 connected with the INA + pin of the double-way differential comparator U2; the INA + pin of the two-way differential comparator U2 is connected to the first diaphragm pressure sensor N1.
2. A pressure wound prevention system based on pressure distributed measurement technology as claimed in claim 1 characterized in that said alarm circuit comprises a transistor Q1 with base connected to serial port P1.5 of microprocessor U1, collector grounded, and alarm buzzer BUZ1 connected to emitter of transistor Q1.
3. A pressure wound prevention system based on pressure distributed measurement technology according to claim 2 characterized in that the reset circuit comprises a resistor R11 connected at one end to the reset port RST of the microprocessor U1 and at the other end to ground, a capacitor C3 connected to the reset port RST of the microprocessor U1, and a reset button KEY1 connected across the capacitor C3.
4. The pressure sore prevention system based on the pressure distributed measurement technology as claimed in claim 3, wherein the first LED lamp indicating circuit comprises a resistor R4 and a light emitting diode D2 which are connected in sequence and then connected with a serial port P2.0 of a microprocessor U1 at one end; the second LED lamp indicating circuit comprises a resistor R1 and a light emitting diode D1, wherein one end of the resistor R1 and one end of the light emitting diode D1 are connected with a serial port P2.1 of the microprocessor U1 in sequence; the third LED lamp indicating circuit comprises a resistor R2 and a light emitting diode D3, wherein one end of the resistor R2 and one end of the light emitting diode D3 are connected with a serial port P2.2 of the microprocessor U1 in sequence; the fourth LED lamp indicating circuit comprises a resistor R3 and a light emitting diode D4, wherein one end of the resistor R3 and one end of the light emitting diode D4 are connected with the serial port P2.3 of the microprocessor U1 in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921129317.XU CN210447450U (en) | 2019-07-18 | 2019-07-18 | Pressure sore prevention system based on pressure distributed measurement technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921129317.XU CN210447450U (en) | 2019-07-18 | 2019-07-18 | Pressure sore prevention system based on pressure distributed measurement technology |
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| Publication Number | Publication Date |
|---|---|
| CN210447450U true CN210447450U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921129317.XU Expired - Fee Related CN210447450U (en) | 2019-07-18 | 2019-07-18 | Pressure sore prevention system based on pressure distributed measurement technology |
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| Country | Link |
|---|---|
| CN (1) | CN210447450U (en) |
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2019
- 2019-07-18 CN CN201921129317.XU patent/CN210447450U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200505 Termination date: 20210718 |