CN114343598A - Convenient and comfortable child clinical vital sign monitoring system and method - Google Patents
Convenient and comfortable child clinical vital sign monitoring system and method Download PDFInfo
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Abstract
The invention relates to a vital sign monitoring technology, in particular to a convenient and comfortable child clinical vital sign monitoring system and a method, which are characterized in that: at least comprises the following steps: an acquisition and transmission unit (13) which is attached to the infant body in a monitoring room (18), a field centralized transmission unit (15) and a display (17) outside the monitoring room (18); the acquisition and transmission unit (13) is used for acquiring the physical sign information of the infants and sending the physical sign information of the infants in the guardian room (18) to the field centralized transmission unit (15) through the internal wireless network (14). The infant postoperative care device solves the problems of few monitoring means, uncomfortable use and inconvenience after the existing infant operation.
Description
Technical Field
The invention relates to a vital sign monitoring technology, in particular to a child clinical vital sign monitoring system and method which are convenient and comfortable to use.
Background
At present, a monitor used for monitoring a patient in a hospital ward is used for detecting pulse, blood oxygen and body temperature, and the monitor used for monitoring the patient is in wired connection with sensing, that is, a lead is required to be connected between the monitor and the patient to monitor the patient.
Wired equipment is not easily accepted by younger patients, and the lead is easily pulled, causing the detection to be affected.
For the second time, some wireless monitoring devices are also on the market, but because the wireless monitoring devices are large in size and made of materials for patients with small ages, the comfort of the patients is low, the damage rate is high, and one-to-many central monitoring cannot be realized.
Disclosure of Invention
The invention aims to provide a child clinical vital sign monitoring system and method which are convenient and comfortable to use, so as to solve the problems of few monitoring means, discomfort in use and inconvenience after the existing infant surgery.
The invention aims to realize the purpose, and the convenient and comfortable child clinical vital sign monitoring system is characterized in that: at least comprises the following steps: an acquisition and transmission unit (13) which is attached to the infant body in a monitoring room (18), a field centralized transmission unit (15) and a display (17) outside the monitoring room (18);
the acquisition and transmission unit (13) is used for acquiring the physical sign information of the infants and sending the physical sign information of the infants in the guardianship room (18) to the field centralized transmission unit (15) through the internal wireless network (14);
the on-site centralized transmission unit (15) is used for receiving the physical sign information acquired by each acquisition and transmission unit (13) attached to the infant body in the guardianship room (18) through an internal wireless network (14), and sending the received physical sign information acquired by each acquisition and transmission unit (13) attached to the infant body to a display (17) outside the guardianship room (18) through a public communication network (16) for displaying;
the display (17) is used for displaying the physical sign information acquired by each acquisition and transmission unit (13) which is attached to the infant body of the monitoring room (18), and comprises: heart rate or pulse.
The acquisition and transmission unit (13) comprises: the flexible surface-shaped body is characterized by comprising a silica gel shell (11), a circuit board (1) and a battery (2), wherein the circuit board (1) and the battery (2) are fixed in the silica gel shell (11), the silica gel shell (11) is formed into a flexible surface-shaped body which can be attached to the skin on the surface, a photoelectric detection circuit (3) is arranged on the bottom surface of the flexible surface-shaped body, and a key (7) and a work indicator lamp (9) are arranged on the flexible surface-shaped body.
The circuit board (1) is a flexible board, a photoelectric detection circuit (3), a processor (4) and a wireless transmission unit (6) are distributed on the flexible board, the photoelectric detection circuit (3) comprises an LED light-emitting unit and a photosensitive receiving photoelectric tube, the LED light-emitting unit (19) and the photosensitive receiving photoelectric tube (20) are separated through an optical isolation layer, and therefore light emitted by the LED light-emitting unit (19) is prevented from causing the photosensitive receiving photoelectric tube (20) to enter a saturated state.
The LED light-emitting unit (19) and the photosensitive receiving photoelectric tube (20) are respectively electrically connected with the processor (4), the processor (4) controls the driving circuit to drive the LED light-emitting unit (19) to be conducted through the I/O port, then scattered light and reflected light are detected through the A/D port, the processor (4) analyzes heart rate or pulse through detecting the scattered light and the reflected light, the detected heart rate or pulse is sent to the field centralized transmission unit (15) through the wireless transmission unit (6), and the detected heart rate or pulse is sent to the display (17) through the field centralized transmission unit (15) to be displayed.
The field centralized transmission unit (15) sends request information to each acquisition transmission unit (13) in a time-sharing manner to acquire acquisition information of the acquisition transmission unit (13) corresponding to the codes.
The LED light-emitting unit (19) and the photosensitive receiving photoelectric tube (20) are arranged in the acquisition area (8), the acquisition area (8) is a hemispherical curved surface, the inner surface of the hemispherical curved surface is a reflective layer, and the outer side of the hemispherical curved surface is made of a light absorption material so as to eliminate the influence of natural light on measurement.
The light of the light absorption material is absorbed or absorbed by the silica gel material of the silica gel shell (11); the light absorption of the light absorption material is realized by surface coating of the flexible board.
The photoelectric detection circuit (3) is composed of a plurality of groups of LED light-emitting units and photosensitive receiving photoelectric tubes, and the plurality of groups of LED light-emitting units and photosensitive receiving photoelectric tubes are distributed at intervals in the acquisition area (8) so as to acquire effective information in the acquisition area (8).
The A/D input end of the processor (4) is electrically connected with a temperature sensor (22), the temperature sensor (22) adopts a thermistor, and a heat insulation material (23) is arranged outside a contact area between the temperature sensor (22) and the skin of a human body; when the sign information is collected, the temperature signal of the human body is collected at the same time, and the display (17) also displays the temperature, the heart rate or the pulse.
A convenient and comfortable child clinical vital sign monitoring method is characterized in that: at least comprises the following steps: an acquisition and transmission unit (13) which is attached to the infant body in a monitoring room (18), a field centralized transmission unit (15) and a display (17) outside the monitoring room (18);
the acquisition and transmission unit (13) is used for acquiring the physical sign information of the infants and sending the physical sign information of the infants in the guardianship room (18) to the field centralized transmission unit (15) through the internal wireless network (14);
the on-site centralized transmission unit (15) is used for receiving the physical sign information acquired by each acquisition and transmission unit (13) attached to the infant body in the guardianship room (18) through an internal wireless network (14), and sending the received physical sign information acquired by each acquisition and transmission unit (13) attached to the infant body to a display (17) outside the guardianship room (18) through a public communication network (16) for displaying;
the display (17) is used for displaying the physical sign information acquired by each acquisition and transmission unit (13) which is attached to the infant body of the monitoring room (18), and comprises: heart rate or pulse;
the collection and transmission unit (13) sends 60H to the LED light-emitting unit (19)ZThe frequency doubled above controls the LED light-emitting unit (19) to work, and the LED light-emitting unit (19) is controlled by the constant current control circuit (21) to supply constant current to the LED light-emitting unit (19), so that the LED light-emitting intensity is kept constant;
the collection and transmission unit (13) receives the scattered return light of the human body detection part by a photosensitive receiving photoelectric tube (20) during the working of the LED;
comparing the light intensity of the scattered return light in the time period, searching for a minimum light intensity point, and acquiring the period of the minimum light intensity point;
the input light time point of the acquisition and transmission unit (13) is synchronous with the minimum pulse light intensity point of the detected person;
adjusting the frequency width t2 of the light to make the width t2 close to the pulse time width t 4;
synchronizing the frequency width t2 with the time width t4 to obtain the pulse information within the frequency width t2, and analyzing the state information of the examiner according to the pulse information;
the processor (4) acquires the pulse period through the minimum light intensity point, when a group is generated to synchronize with the pulse period and the pulse with the same width, single-wavelength light with one wavelength of green light or the wavelength easily absorbed by blood is input through the LED, and the health information of the detector can be accurately acquired by receiving the light wave energy absorbed by the blood;
the pulse time width t4 is sampled at 1KHZ-5KHZ, and by controlling the light-emitting LED to work, the light-emitting LED receives the light returned from the human body detection part, and after amplification and A/D conversion, the signal is subjected to digital low-pass filtering or analog low-pass filtering to obtain a complete pulse signal.
The invention has the advantages that: 1. wireless connection has reduced the unnecessary connecting wire to and use the portable monitor of silica gel software wrist strap formula or forehead formula, patient's acceptance more easily like this, and the software design travelling comfort is better moreover, also great reduction the spoilage of equipment.
2. The wireless connection enables the patient to leave the bed freely after the operation, thus the inconvenience brought by the traditional wired monitoring (the monitoring can be realized only by lying on the bed) is eliminated, the patient can leave the bed freely under the monitoring condition, the time for the patient to lie in the bed is reduced, and the recovery is accelerated.
3. The wireless connection and the implementation of central monitoring are also favorable for real-time monitoring in the post-operation transfer process, and the monitor does not need to be replaced to a ward to realize real wireless docking unified management.
4. The invention has another advantage that the workload and the working strength of medical care personnel can be greatly reduced, the function of achieving twice the result with half the effort can be achieved, and the aim of accurately and effectively monitoring can be still achieved. (we can preset alarm thresholds on the monitoring device, such as upper and lower heart rate thresholds, and upper and lower blood oxygen saturation thresholds) to better manage the patient.
5. The invention adopts the combination of the modeling correlation technology and the frequency modulation technology to eliminate the problems of skin color influence, part influence and environmental difference, namely, the correlation detection in weak signal detection is used in photoelectric heart rate monitoring, and the problem of correlation detection is realized by realizing no correlation signal through modeling correlation.
Drawings
The invention is further illustrated by the following examples and figures:
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic diagram of a first embodiment of a monitoring sensing unit;
FIG. 3 is a schematic thickness diagram of the structure of the first embodiment;
FIG. 4 is a schematic diagram of a second embodiment of a monitoring sensing unit;
FIG. 5 is a schematic thickness diagram of the structure of the second embodiment;
FIG. 6 is a schematic thickness diagram of a third embodiment;
FIG. 7 is a schematic representation of the pulsation frequency of blood flow;
FIG. 8 is a plot of sample detection output pulse and blood flow pulsation frequency;
FIG. 9 is an enlarged view of a sample detection output pulse;
FIG. 10 is a real time graph of a photo-electric detected heart rate signal;
fig. 11 is a schematic circuit diagram.
In the figure, 1, a circuit board; 2. a battery; 3. a photoelectric detection circuit; 4. a processor; 5. an antenna; 6. a wireless transmission unit; 7. pressing a key; 8. a collection zone; 9. a work indicator light; 10. fixing belts; 11. a silica gel shell; 12. fixing belt connecting holes; 13. a collecting and transmitting unit; 14. a wireless network; 15. a field centralized transmission unit; 16. a public communication network; 17. a display; 18. a monitoring room; 19. an LED light emitting unit; 20. a photosensitive receiving photocell; 21. a constant current control circuit; 22. a temperature sensor; 23. and (4) a heat-insulating material.
Detailed Description
Example 1
As shown in fig. 1, a child clinical vital sign monitoring system with convenient and comfortable use is characterized in that: at least comprises the following steps: an acquisition and transmission unit 13 attached to the infant body in a monitoring room 18, a field centralized transmission unit 15 and a display 17 outside the monitoring room 18;
the acquisition and transmission unit 13 is used for acquiring physical sign information of the infant and sending the physical sign information of the infant in the monitoring room 18 to the field centralized transmission unit 15 through the internal wireless network 14;
the field centralized transmission unit 15 is used for receiving the physical sign information acquired by each acquisition and transmission unit 13 attached to the infant body in the monitoring room 18 through the internal wireless network 14, and sending the received physical sign information acquired by each acquisition and transmission unit 13 attached to the infant body to the display 17 outside the monitoring room 18 through the public communication network 16 for display;
the display 17 is used for displaying the physical sign information acquired by each acquisition and transmission unit 13 of the monitoring room 18 attached to the infant body, and comprises: heart rate or pulse.
As shown in fig. 1, fig. 2, fig. 3 and fig. 11, the collecting and transmitting unit 13 includes: silica gel casing 11, circuit board 1, battery 2, circuit board 1 and battery 2 are fixed in silica gel casing 11, and the flexible surface body that can paste the surface skin of silica gel casing 11 shaping, there is photoelectric detection circuit 3 flexible surface body bottom surface, has button 7 and work pilot lamp 9 on the flexible surface body.
The circuit board 1 is a flexible board, a photoelectric detection circuit 3, a processor 4 and a wireless transmission unit 6 are distributed on the flexible board, the photoelectric detection circuit 3 comprises an LED light-emitting unit and a photosensitive receiving photoelectric tube, and the LED light-emitting unit 19 and the photosensitive receiving photoelectric tube 20 are separated by an optical isolation layer so as to prevent the photosensitive receiving photoelectric tube 20 from entering a saturated state due to light emitted by the LED light-emitting unit 19; the LED light-emitting unit 19 and the photosensitive receiving photoelectric tube 20 are respectively electrically connected with the processor 4, the processor 4 controls the driving circuit to drive the LED light-emitting unit 19 to be conducted through the I/O port, then scattered light and reflected light are detected through the A/D port, the processor 4 analyzes heart rate or pulse through detecting the scattered light and the reflected light, the detected heart rate or pulse is sent to the field centralized transmission unit 15 through the wireless transmission unit 6, and the detected heart rate or pulse is sent to the display 17 to be displayed in a unified mode through the field centralized transmission unit 15.
The wireless transmission unit 6 is 315MHZOr 433MHZOr 2.4G wireless module, the field centralized transmission unit 15 sends request information to each acquisition transmission unit 13 in a time-sharing manner, and acquires acquisition information of the acquisition transmission unit 13 corresponding to the code. As shown in fig. 1 and 10, 13-1, 13-2, 13-N, and 13-N + 1 represent different codes of the acquisition and transmission unit, respectively, and when the field centralized transmission unit 15 calls the acquisition and transmission unit 13-1, the acquisition and transmission unit 13-1 transmits the acquired information.
The LED light-emitting unit 19 and the photosensitive receiving photoelectric tube 20 are arranged in the collection area 8, the collection area 8 is a hemispherical curved surface, the inner surface of the hemispherical curved surface is a reflective layer, and the outer side of the hemispherical curved surface is made of a light absorption material so as to eliminate the influence of natural light on measurement.
The light absorption of the light absorption material or the absorption of the silica gel material of the silica gel shell 11.
The light absorption of the light absorption material is realized by surface coating of the flexible board.
Example 2
As shown in fig. 1, a child clinical vital sign monitoring system with convenient and comfortable use is characterized in that: at least comprises the following steps: an acquisition and transmission unit 13 attached to the infant body in a monitoring room 18, a field centralized transmission unit 15 and a display 17 outside the monitoring room 18;
the acquisition and transmission unit 13 is used for acquiring physical sign information of the infant and sending the physical sign information of the infant in the monitoring room 18 to the field centralized transmission unit 15 through the internal wireless network 14;
the field centralized transmission unit 15 is used for receiving the physical sign information acquired by each acquisition and transmission unit 13 attached to the infant body in the monitoring room 18 through the internal wireless network 14, and sending the received physical sign information acquired by each acquisition and transmission unit 13 attached to the infant body to the display 17 outside the monitoring room 18 through the public communication network 16 for display;
the display 17 is used for displaying the physical sign information acquired by each acquisition and transmission unit 13 of the monitoring room 18 attached to the infant body, and comprises: heart rate or pulse.
As shown in fig. 1, 4 and 5, the collecting and transmitting unit 13 includes: silica gel casing 11, circuit board 1, battery 2, circuit board 1 and battery 2 are fixed in silica gel casing 11, and the flexible surface body that can paste the surface skin of silica gel casing 11 shaping, there is photoelectric detection circuit 3 flexible surface body bottom surface, has button 7 and work pilot lamp 9 on the flexible surface body.
The circuit board 1 is a flexible board, a photoelectric detection circuit 3, a processor 4 and a wireless transmission unit 6 are distributed on the flexible board, the photoelectric detection circuit 3 is composed of 3 groups of LED light-emitting units and photosensitive receiving photoelectric tubes, and the 3 groups of LED light-emitting units and the photosensitive receiving photoelectric tubes are distributed at intervals in the acquisition area 8 so as to acquire effective information in the acquisition area 8. 3-1, 3-2, 3-3 in fig. 4 and 5, respectively, a set of photo-detection circuits 3.
By adopting the multi-point structure, because the influence on the measurement accuracy of the photoelectric heart rate is an important factor, because some blood vessels of the human body have good blood circulation and some blood vessels have slow blood circulation, partial influence can be effectively eliminated through local multi-point detection.
As in embodiment 1, the LED lighting unit 19 and the photo-sensitive receiving photodiode 20 are separated by an optical isolation layer to prevent the light emitted from the LED lighting unit 19 from causing the photo-sensitive receiving photodiode 20 to enter a saturated state; the LED light-emitting unit 19 and the photosensitive receiving photoelectric tube 20 are respectively electrically connected with the processor 4, the processor 4 controls the driving circuit to drive the LED light-emitting unit 19 to be conducted through the I/O port, then scattered light and reflected light are detected through the A/D port, the processor 4 analyzes heart rate or pulse through detecting the scattered light and the reflected light, the detected heart rate or pulse is sent to the field centralized transmission unit 15 through the wireless transmission unit 6, and the detected heart rate or pulse is sent to the display 17 to be displayed in a unified mode through the field centralized transmission unit 15.
As in example 1, the wireless transmission unit 6 is 315MHZOr 433MHZOr 2.4G wireless module, the field centralized transmission unit 15 sends request information to each acquisition transmission unit 13 in a time-sharing manner, and acquires acquisition information of the acquisition transmission unit 13 corresponding to the code. As shown in FIGS. 1 and 11, 13-1, 13-2, 13-N, 13-N + 1 represents different codes of the acquisition and transmission unit respectively, and when the field centralized transmission unit 15 calls the acquisition and transmission unit 13-1, the acquisition and transmission unit 13-1 transmits acquired signal information.
The collecting area 8 is a hemispherical curved surface, the inner surface of the hemispherical curved surface is a reflecting layer, and the outer side of the hemispherical curved surface is made of a light absorbing material so as to eliminate the influence of natural light on measurement.
The light absorption of the light absorption material or the absorption of the silica gel material of the silica gel shell 11.
The light absorption of the light absorption material is realized by surface coating of the flexible board.
Example 3
As shown in fig. 6, different from embodiments 1 and 2, in embodiment 3, a temperature sensor 22 is added, the temperature sensor 22 is a thermistor, the a/D input end of the processor 4 is electrically connected to the temperature sensor 22, when the collected physical sign information is collected, a human body temperature signal is collected at the same time, and the display 17 also displays the temperature, the heart rate or the pulse.
In order to rapidly detect the temperature of the skin of the human body, a heat insulation material 23 is arranged outside a contact area of the temperature sensor 22 and the skin of the human body, so that a detection temperature area is insulated by the heat insulation material 23 and is not influenced by the external temperature.
As shown in fig. 7, 8 and 9, the processor 4 sends 60H to the LED lighting unit 19ZThe LED light-emitting unit 19 is controlled to work by the frequency which is twice as high as the frequency, and the LED light-emitting unit 19 is controlled by the constant current control circuit 21 to supply constant current to the LED light-emitting unit 19, so that the LED light-emitting intensity is kept constant;
the processor 4 receives the scattered return light of the human body detection part by the photosensitive receiving photoelectric tube 20 during the working of the LED;
the intensities of the scattered returning light over the period are compared, and the minimum intensity points are found, from which their periods are obtained.
Synchronizing the input light time point of the processor 4 with the minimum pulse light intensity point of the detected person;
adjusting the frequency width t2 of the light to make the width t2 close to the pulse time width t 4;
the frequency width t2 and the time width t4 are synchronized to acquire the pulse information within the frequency width t2, and the status information of the examiner is analyzed based on the pulse information.
The processor 4 acquires the pulse period through the minimum light intensity point, when a group is generated to synchronize with the pulse period and the pulse width, the LED inputs single-wavelength light of one wavelength of green light or the wavelength which is easy to be absorbed by blood, and the health information of the detector can be accurately acquired by receiving the light wave energy absorbed by the blood.
The sampling of the pulse time width t4 is completed by a modulation wave with higher frequency (such as 1KHZ-5 KHZ), and when the light-emitting LED is controlled to work, the light-emitting LED receives the return light of a human body detection part, and the signal is subjected to digital low-pass filtering or analog low-pass filtering through amplification and A/D conversion to obtain a complete pulse signal.
As shown in fig. 9, the reason why the above-mentioned photoelectric detection method is used is that the photoelectric detection method is due to the light interference and the uncertainty of the body part and the photoelectric detection point, and the biggest technical obstacle of the photoelectric heart rate measurement is how to separate the biometric signal from the interference, especially the motion interference. Unfortunately, when light is injected into a person's skin, only a small fraction of the light quanta is returned to the sensor and only one percent or one thousandth of all the collected light quanta is regulated by the systolic blood flow, the rest being dispersed over non-pulsatile physiological substances such as skin, muscles, tendons, etc. Therefore, when these non-pulsating physiological substances move around, such as in exercise or daily living activities, the resulting kinematical dispersion of light with time is difficult to distinguish from the dispersion of light with true blood flow. Ambient light interference also exacerbates the problem, as over time, sunlight interference can penetrate completely into the photodetector and even create a pulsatile signal of near physiological nature.
Humans possess a very wide variety of different beautiful skin colors, up to the point where the Fei's Scale provides 7 types of criteria for skin color numerical classification and response to ultraviolet light. The absorption of light is different for different skin colors, and thus each skin color is characterized by a different absorption spectrum. This then means that the intensity and wavelength of the light captured by the photoelectric heart rate measuring device sensor is dependent on the skin tone of the person wearing the sensor. For example, dark skin absorbs more green light, which also indicates why most devices use green LEDs as light emitters, limiting the ability to accurately measure heart rate through dark skin. This also exposes the problem of measuring heart rate through the skin of a tattoo, which is also the "tattoo door" of an apple subject to a person's insult, and the data display on the display screen is very weak or even absent from an apple watch user with a tattoo on their wrist.
There is also a cross-talk problem, with photoelectric heart rate monitoring having problems with cross-talk due to motion during periodic activities, the biggest challenge facing this is that such activities bring about consistent, identical repetitive motion. This is most common when recording the frequency of steps during jogging and running, since these data are usually in the same basic interval as the heartbeat frequency (140-. This problem faced by many optoelectronic heart rate monitoring devices makes it very easy for an algorithm to misinterpret the pace rate entered via the optoelectronic monitoring data as a heart rate. This is known as the "cross-over problem" because many optoelectronic heart rate monitoring devices tend to lock and display the pace rate as the heart rate when the heart rate and pace rate overlap when viewing these data on a graph, although the heart rate may change dramatically after the overlap. This cross-talk problem is apparent on the apple watch.
The invention adopts the combination of the modeling correlation technology and the frequency modulation technology to eliminate the problems of skin color influence, part influence and environmental difference, namely, the correlation detection in weak signal detection is used in photoelectric heart rate monitoring, and the problem of correlation detection is realized by realizing no correlation signal through modeling correlation.
The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.
Claims (10)
1. A convenient to use and comfortable children clinical vital sign monitor system, characterized by: at least comprises the following steps: an acquisition and transmission unit (13) which is attached to the infant body in a monitoring room (18), a field centralized transmission unit (15) and a display (17) outside the monitoring room (18);
the acquisition and transmission unit (13) is used for acquiring the physical sign information of the infants and sending the physical sign information of the infants in the guardianship room (18) to the field centralized transmission unit (15) through the internal wireless network (14);
the on-site centralized transmission unit (15) is used for receiving the physical sign information acquired by each acquisition and transmission unit (13) attached to the infant body in the guardianship room (18) through an internal wireless network (14), and sending the received physical sign information acquired by each acquisition and transmission unit (13) attached to the infant body to a display (17) outside the guardianship room (18) through a public communication network (16) for displaying;
the display (17) is used for displaying the physical sign information acquired by each acquisition and transmission unit (13) which is attached to the infant body of the monitoring room (18), and comprises: heart rate or pulse.
2. A child clinical vital signs monitoring system as claimed in claim 1, wherein the system is configured to: the acquisition and transmission unit (13) comprises: the flexible surface-shaped body is characterized by comprising a silica gel shell (11), a circuit board (1) and a battery (2), wherein the circuit board (1) and the battery (2) are fixed in the silica gel shell (11), the silica gel shell (11) is formed into a flexible surface-shaped body which can be attached to the skin on the surface, a photoelectric detection circuit (3) is arranged on the bottom surface of the flexible surface-shaped body, and a key (7) and a work indicator lamp (9) are arranged on the flexible surface-shaped body.
3. A child clinical vital signs monitoring system as claimed in claim 1, wherein the system is configured to: the circuit board (1) is a flexible board, a photoelectric detection circuit (3), a processor (4) and a wireless transmission unit (6) are distributed on the flexible board, the photoelectric detection circuit (3) comprises an LED light-emitting unit and a photosensitive receiving photoelectric tube, the LED light-emitting unit (19) and the photosensitive receiving photoelectric tube (20) are separated through an optical isolation layer, and therefore light emitted by the LED light-emitting unit (19) is prevented from causing the photosensitive receiving photoelectric tube (20) to enter a saturated state.
4. A convenient and comfortable child clinical vital signs monitoring system as claimed in claim 3, wherein: the LED light-emitting unit (19) and the photosensitive receiving photoelectric tube (20) are respectively electrically connected with the processor (4), the processor (4) controls the driving circuit to drive the LED light-emitting unit (19) to be conducted through the I/O port, then scattered light and reflected light are detected through the A/D port, the processor (4) analyzes heart rate or pulse through detecting the scattered light and the reflected light, the detected heart rate or pulse is sent to the field centralized transmission unit (15) through the wireless transmission unit (6), and the detected heart rate or pulse is sent to the display (17) through the field centralized transmission unit (15) to be displayed.
5. A child clinical vital signs monitoring system as claimed in claim 1, wherein the system is configured to: the field centralized transmission unit (15) sends request information to each acquisition transmission unit (13) in a time-sharing manner to acquire acquisition information of the acquisition transmission unit (13) corresponding to the codes.
6. A convenient and comfortable child clinical vital signs monitoring system as claimed in claim 3, wherein: the LED light-emitting unit (19) and the photosensitive receiving photoelectric tube (20) are arranged in the acquisition area (8), the acquisition area (8) is a hemispherical curved surface, the inner surface of the hemispherical curved surface is a reflective layer, and the outer side of the hemispherical curved surface is made of a light absorption material so as to eliminate the influence of natural light on measurement.
7. A child clinical vital signs monitoring system as claimed in claim 6, wherein the system is configured to: the light of the light absorption material is absorbed or absorbed by the silica gel material of the silica gel shell (11); the light absorption of the light absorption material is realized by surface coating of the flexible board.
8. A child clinical vital signs monitoring system as claimed in claim 2, wherein the system is configured to: the photoelectric detection circuit (3) is composed of a plurality of groups of LED light-emitting units and photosensitive receiving photoelectric tubes, and the plurality of groups of LED light-emitting units and photosensitive receiving photoelectric tubes are distributed at intervals in the acquisition area (8) so as to acquire effective information in the acquisition area (8).
9. A convenient and comfortable child clinical vital signs monitoring system as claimed in claim 3, wherein: the A/D input end of the processor (4) is electrically connected with a temperature sensor (22), the temperature sensor (22) adopts a thermistor, and a heat insulation material (23) is arranged outside a contact area between the temperature sensor (22) and the skin of a human body; when the sign information is collected, the temperature signal of the human body is collected at the same time, and the display (17) also displays the temperature, the heart rate or the pulse.
10. A convenient and comfortable child clinical vital sign monitoring method is characterized in that: at least comprises the following steps: an acquisition and transmission unit (13) which is attached to the infant body in a monitoring room (18), a field centralized transmission unit (15) and a display (17) outside the monitoring room (18);
the acquisition and transmission unit (13) is used for acquiring the physical sign information of the infants and sending the physical sign information of the infants in the guardianship room (18) to the field centralized transmission unit (15) through the internal wireless network (14);
the on-site centralized transmission unit (15) is used for receiving the physical sign information acquired by each acquisition and transmission unit (13) attached to the infant body in the guardianship room (18) through an internal wireless network (14), and sending the received physical sign information acquired by each acquisition and transmission unit (13) attached to the infant body to a display (17) outside the guardianship room (18) through a public communication network (16) for displaying;
the display (17) is used for displaying the physical sign information acquired by each acquisition and transmission unit (13) which is attached to the infant body of the monitoring room (18), and comprises: heart rate or pulse;
acquisition and transmission unit (13) Sending 60H to the LED lighting unit (19)ZThe frequency doubled above controls the LED light-emitting unit (19) to work, and the LED light-emitting unit (19) is controlled by the constant current control circuit (21) to supply constant current to the LED light-emitting unit (19), so that the LED light-emitting intensity is kept constant;
the collection and transmission unit (13) receives the scattered return light of the human body detection part by a photosensitive receiving photoelectric tube (20) during the working of the LED;
comparing the light intensity of the scattered return light in the time period, searching for a minimum light intensity point, and acquiring the period of the minimum light intensity point;
the input light time point of the acquisition and transmission unit (13) is synchronous with the minimum pulse light intensity point of the detected person;
adjusting the frequency width t2 of the light to make the width t2 close to the pulse time width t 4;
synchronizing the frequency width t2 with the time width t4 to obtain the pulse information within the frequency width t2, and analyzing the state information of the examiner according to the pulse information;
the processor (4) acquires the pulse period through the minimum light intensity point, when a group is generated to synchronize with the pulse period and the pulse with the same width, single-wavelength light with one wavelength of green light or the wavelength easily absorbed by blood is input through the LED, and the health information of the detector can be accurately acquired by receiving the light wave energy absorbed by the blood;
the pulse time width t4 is sampled at 1KHZ-5KHZ, and by controlling the light-emitting LED to work, the light-emitting LED receives the light returned from the human body detection part, and after amplification and A/D conversion, the signal is subjected to digital low-pass filtering or analog low-pass filtering to obtain a complete pulse signal.
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| CN202210036006.9A CN114343599A (en) | 2022-01-11 | 2022-01-11 | Convenient and comfortable child clinical vital sign collector and method |
| CN202210024950.2A CN114343598A (en) | 2022-01-11 | 2022-01-11 | Convenient and comfortable child clinical vital sign monitoring system and method |
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| CN114343599A (en) | 2022-04-15 |
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