Monitoring system for cardiac surgery nursing

Abstract

The invention provides a cardiac surgery nursing monitoring system which comprises an information processing unit, a posture detection unit, a position adjustment auxiliary unit and a monitoring unit, the information processing unit is arranged on the side edge of a nursing bed, the posture detection unit is arranged in a mattress, the position adjustment auxiliary unit is arranged on the shoulder of a patient, and the monitoring unit is arranged on the shoulder of the patient. The monitoring unit is arranged on a wall surface corresponding to the nursing bed, and the information processing unit is in communication connection with the posture detection unit, the position adjustment auxiliary unit and the monitoring unit and controls the working process of the monitoring system for cardiac and surgical nursing. According to the invention, the monitoring unit is accurately adjusted according to the posture of the patient, accurate acquisition of data is ensured, and the emotion state of the patient is monitored under the condition of ensuring privacy, so that comprehensive nursing is realized, and the nursing effect is improved from multiple aspects.

Description

Technical Field

[0001] The invention relates to the technical field of intelligent nursing, in particular to a monitoring system for cardiac surgery nursing. Background Art

[0002] The nursing system consists of detection equipment installed at the nursing bedside, which can continuously monitor various physiological parameters or certain conditions of the person being cared for, and display alarms or record them. The existing nursing system generally works as a whole with multiple remote user terminals.

[0003] Traditional detection equipment, such as thermometers, blood pressure monitors, heart rate detection devices, etc., are mostly contact devices that need to be worn by the care recipient for detection. At the same time, they are accompanied by a large number of complex connecting wires, which are complicated to operate and have limitations in usage scenarios, restricting the normal activities of the care recipient. In addition, traditional detection equipment can only detect routine vital signs such as body temperature, heart rate, and blood pressure, and cannot determine the patient's emotional state. In summary, the existing nursing system has defects such as inconvenient detection methods and the inability to monitor emotions. Summary of the invention

[0004] In order to solve the technical problem that the detection means of the nursing system in the prior art are inconvenient and emotion monitoring cannot be performed, the monitoring system for cardiac surgery nursing proposed by the present invention includes an information processing unit, a posture detection unit, a position adjustment auxiliary unit and a monitoring unit;

[0005] The information processing unit is arranged on the side of the nursing bed, the posture detection unit is arranged in the mattress, the position adjustment auxiliary unit is arranged on the shoulder of the patient, and the monitoring unit is arranged on the wall corresponding to the nursing bed;

[0006] The information processing unit is in communication connection with the posture detection unit, the position adjustment auxiliary unit and the monitoring unit to control the working process of the monitoring system for cardiac surgery nursing.

[0007] Preferably, the posture detection unit includes a plurality of pressure sensors, which are evenly distributed inside the mattress. The posture detection unit is divided into a first subunit and a second subunit. The pressure sensors included in the first subunit are located in the upper half of the mattress, and the pressure sensors included in the second subunit are located in the lower half of the mattress.

[0008] Preferably, the position adjustment auxiliary unit includes two ultrasonic distance sensors, which are respectively arranged on the left and right shoulders of the patient, and the ultrasonic distance sensors are in a vertical state relative to the patient's shoulders.

[0009] Preferably, the monitoring unit includes a mounting base, which is arranged on the wall corresponding to the nursing bed, the mounting base is connected to the first connecting rod through the first turntable, the first connecting rod is connected to the second connecting rod through the second turntable, the second connecting rod is connected to the third connecting rod through the pitch motor, and the third connecting rod is connected to the monitoring end.

[0010] Preferably, a millimeter-wave radar detection module is arranged at the center of the monitoring end, an infrared camera and a microphone are symmetrically arranged around the millimeter-wave radar detection module, and a first processing unit, a first communication unit and a first storage unit are arranged inside the mounting base.

[0011] Preferably, the information processing unit includes a display operation screen, a second processing unit, a second communication unit and a second storage unit, and the functions of the information processing unit include:

[0012] 1) Start the millimeter-wave radar detection module of the monitoring end, judge the patient's posture according to the posture detection unit, adjust the detection position of the monitoring end in combination with the patient's posture and the position adjustment auxiliary unit, send the detection data to the information processing unit, separate the patient's heart rate data and respiratory rate data from the detection data, perform health detection based on the patient's heart rate data and respiratory rate data, and alarm the nurse station when an abnormality occurs;

[0013] 2) The posture detection unit and the monitoring unit cooperate with each other to determine the patient's emotional state and alert the nurse station when the emotional state is abnormal.

[0014] Preferably, the specific process of judging the patient's posture according to the posture detection unit and the position adjustment auxiliary unit is:

[0015] S11, calculating the ratio of the pressure sensors whose pressure values ​​are greater than the pressure threshold in the first sub-unit to the total number of pressure sensors as the coverage ratio. If the coverage ratio is greater than the first ratio threshold, the patient is in the first posture. At this time, the patient lies flat on the mattress, and the posture judgment ends. Otherwise, proceeding to S12;

[0016] S12. If the coverage ratio is greater than the second ratio threshold, the patient is in the second posture, and the patient lies on the mattress sideways. Otherwise, the patient is in the third posture, and the patient's upper body leaves the mattress, and the posture judgment ends.

[0017] Preferably, the specific process of adjusting the detection position of the monitoring end by combining the patient's posture and the position adjustment auxiliary unit is:

[0018] When the patient is in the first posture, the information processing unit sends control information, the monitoring unit returns to the initial state, controls the monitoring end to move vertically downward to face the patient's chest through the pitch motor, and updates the current angle of the first connecting rod in the first storage unit;

[0019] When the patient is in the second posture, if at least one of the detection values ​​of the two ultrasonic distance sensors is greater than the distance threshold, it means that the patient's side lying angle is large and close to vertical, the monitoring unit returns to the initial state, and the information processing unit sends control information to control the monitoring end to move vertically downward through the pitch motor, determine the direction of the patient's head through the infrared camera, control the first turntable through the first motor, adjust the first connecting rod to a horizontal state according to the direction of the patient's head, control the second turntable through the second motor so that the second connecting rod moves vertically downward, and control the monitoring end to face the patient's chest through the pitch motor, and update the current angle of the first connecting rod in the first storage unit. If the detection values ​​of the two ultrasonic distance sensors are both less than the distance threshold, the information processing unit Send control information, control the monitoring end to move vertically downward through the pitch motor, determine the direction of the patient's head through the infrared camera, calculate the patient's side-lying angle θ according to the detection value of the ultrasonic distance sensor, calculate the set angle of the first connecting rod according to the direction of the patient's head and the side-lying angle θ, at the set angle, the first connecting rod is perpendicular to the plane where the patient's upper body is located, obtain the adjustment angle of the first connecting rod according to the set angle and the current angle of the first connecting rod in the first storage unit, control the first motor according to the adjustment angle, so that the first connecting rod reaches the set angle, adjust the second connecting rod and the third connecting rod according to the real-time image of the infrared camera, so that the monitoring end is facing the patient's chest, and update the current angle of the first connecting rod in the first storage unit.

[0020] Preferably, the specific process of performing health checks based on the patient's heart rate data and respiratory rate data and issuing an alarm when an abnormality occurs is that the second storage unit stores the normal heart rate range, the normal respiratory rate range and the neural network model, the second processing unit compares the patient's heart rate data with the normal heart rate range, and compares the patient's respiratory rate data with the normal respiratory rate range. If the detected value exceeds the normal range, an alarm is sent to the nurses' station via the second communication unit. The second processing unit inputs the patient's heart rate data and respiratory rate data into the neural network model for judgment. If the judgment result is that an abnormality is present, an alarm is sent to the nurses' station via the second communication unit.

[0021] Preferably, the posture detection unit and the monitoring unit cooperate with each other to judge the patient's emotional state, and the specific process of alarming the nurse station when the emotional state is abnormal is:

[0022] S21, initializing the change quantity m to 0;

[0023] S22, receiving the pressure sensor data of the second sub-unit, comparing the pressure sensor data of the second sub-unit with the current pressure sensor data stored in the second storage unit, calculating the ratio of the pressure sensors whose sensor data change amplitude is greater than the set threshold to the total number of pressure sensors as the change area ratio, if the change area ratio is greater than the change threshold, storing the time of receiving the pressure sensor data in the second storage unit, adding 1 to the change number m, and entering S23, otherwise, entering S25;

[0024] S23, determine whether the change number m is equal to 10, if the change number m is equal to 10, obtain the time of receiving the pressure sensor data in the second storage unit, calculate the average interval between the times, if the average interval is less than the interval threshold, start the microphone, collect the patient's voice data, and the negative emotion recognition model determines whether the patient has negative emotions based on the voice data. If the recognition result of the negative emotion recognition model is that negative emotions exist, an alarm is sent to the nurse station. If the recognition result of the negative emotion recognition model is that negative emotions do not exist, or the average interval is greater than or equal to the interval threshold, a data time period is constructed based on the earliest time and the latest time of the time of receiving the pressure sensor data in the second storage unit, and the data time period is stored in the second storage unit as a potential emotion fluctuation time period, which can be displayed on the display operation screen when medical staff make rounds. If the change number m is not equal to 10, enter S25;

[0025] S24, deleting the time of receiving the pressure sensor data stored in the second storage unit, and initializing the change quantity m to 0;

[0026] S25 , updating the current pressure sensor data stored in the second storage unit to the received pressure sensor data of the second sub-unit, and returning to S22 .

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The monitoring unit is precisely adjusted according to the patient's posture to ensure accurate data collection. In addition, the patient's emotional state is monitored while ensuring privacy, achieving all-round care and improving care effects in multiple aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the monitoring system for cardiac surgery nursing of the present invention;

[0030] Figure 2 It is a structural schematic diagram of the monitoring unit of the present invention;

[0031] Figure 3 It is a structural schematic diagram of the monitoring terminal of the present invention;

[0032] Figure 4It is a schematic diagram of calculating the side-lying angle of the present invention.

[0033] Figure numerals: 1. mounting base, 2. first turntable, 3. first connecting rod, 4. second turntable, 5. second connecting rod, 6. pitch motor, 7. third connecting rod, 8. monitoring end, 81. millimeter wave radar detection module, 82. infrared camera, 83. microphone. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] like Figure 1 As shown, the monitoring system for cardiac surgery nursing proposed by the present invention includes an information processing unit, a posture detection unit, a position adjustment auxiliary unit and a monitoring unit. The information processing unit is arranged on the side of the nursing bed, the posture detection unit is arranged in the mattress, the position adjustment auxiliary unit is arranged on the patient's shoulder, and the monitoring unit is arranged on the wall corresponding to the nursing bed.

[0036] The posture detection unit includes a plurality of pressure sensors, which are evenly distributed inside the mattress and can detect the pressure distribution of the patient on the mattress. The posture detection unit is divided into a first subunit and a second subunit. The pressure sensor included in the first subunit is located in the upper half of the mattress, and the pressure sensor included in the second subunit is located in the lower half of the mattress.

[0037] The position adjustment auxiliary unit includes two ultrasonic distance sensors, which are respectively arranged on the left and right shoulders of the patient. The ultrasonic distance sensors are in a vertical state relative to the patient's shoulders and are used to detect the distance between the patient's shoulders and the nursing bed.

[0038] like Figure 2 As shown, the monitoring unit includes a mounting base 1, which is arranged on the wall corresponding to the nursing bed. The mounting base 1 is connected to the first connecting rod 3 through the first turntable 2. The first turntable 2 can drive the first connecting rod 3 to achieve 360° rotation under the drive of the first motor. The first connecting rod 3 is connected to the second connecting rod 5 through the second turntable 4. The second turntable 4 can drive the second connecting rod 5 to achieve 360° rotation under the drive of the second motor. The second connecting rod 5 is connected to the third connecting rod 7 through the pitch motor 6. The third connecting rod 7 can achieve -90° to +90° rotation relative to the second connecting rod 5 under the drive of the pitch motor 6. The third connecting rod 7 is connected to the monitoring end 8. Figure 3As shown, the monitoring end 8 is a cylindrical structure, and a millimeter wave radar detection module 81 is arranged at the center thereof, and an infrared camera 82 and a microphone 83 are symmetrically arranged around the millimeter wave radar detection module 81. A first processing unit, a first communication unit and a first storage unit are arranged inside the mounting base 1. The first communication unit is wirelessly connected with the first motor, the second motor, the pitch motor, the monitoring end and the information processing unit, and sends control information to the first motor, the second motor and the pitch motor, sends control information to the monitoring end and receives detection information, and receives control information and sends detection information to the information processing unit. The first storage unit is used to store the current angle of the first connecting rod and temporarily store detection information. The first processing unit connects the first communication unit and the first storage unit, drives the first motor, the second motor and the pitch motor according to the control information from the information processing unit, adjusts the detection position of the monitoring end, or feeds back the detection information of the monitoring end to the information processing unit according to the control information from the information processing unit. The initial state of the monitoring unit is that the first connecting rod 3 is vertically upward, and the second connecting rod 5 and the third connecting rod 7 are horizontally pointing forward.

[0039] The information processing unit is connected in communication with the posture detection unit, the position adjustment auxiliary unit and the monitoring unit to control the working process of the monitoring system for cardiac surgery nursing. The information processing unit includes a display operation screen, a second processing unit, a second communication unit and a second storage unit. The second communication unit is connected in wireless communication with the posture detection unit, the position adjustment auxiliary unit and the monitoring unit to receive detection information from the posture detection unit and the position adjustment auxiliary unit, and to send control information and receive detection information from the monitoring unit. The second storage unit is used to store the current pressure sensor data of the second subunit and the detection information from the monitoring unit. The display operation screen is used to display the detection information and receive input control instructions. The second processing unit is connected to the display operation screen, the second communication unit and the second storage unit.

[0040] The functions of the information processing unit are as follows:

[0041] 1) Vital sign monitoring: specifically, start the millimeter-wave radar detection module of the monitoring end, judge the patient's posture according to the posture detection unit, adjust the detection position of the monitoring end in combination with the patient's posture and position adjustment auxiliary unit, send the detection data to the information processing unit, separate the patient's heart rate data and respiratory rate data from the detection data, perform health checks based on the patient's heart rate data and respiratory rate data, and alarm the nurse station when an abnormality occurs.

[0042] The specific process of judging the patient's posture according to the posture detection unit and the position adjustment auxiliary unit is as follows:

[0043] S11. Calculate the ratio of the pressure sensors whose pressure values ​​are greater than the pressure threshold in the first sub-unit to the total number of pressure sensors as the coverage ratio. If the coverage ratio is greater than the first ratio threshold, the patient is in the first posture. At this time, the patient lies flat on the mattress and the posture judgment ends. Otherwise, enter S12.

[0044] S12. If the coverage ratio is greater than the second ratio threshold, the patient is in the second posture, and the patient lies on the mattress sideways. Otherwise, the patient is in the third posture, and the patient's upper body leaves the mattress, and the posture judgment ends.

[0045] The specific process of adjusting the detection position of the monitoring end by the auxiliary unit in combination with the patient's posture and position is as follows:

[0046] When the patient is in the first posture, the information processing unit sends control information, the monitoring unit returns to the initial state, controls the monitoring end vertically downward through the pitch motor, facing the patient's chest, and updates the current angle of the first connecting rod in the first storage unit.

[0047] When the patient is in the second posture, if at least one of the detection values ​​of the two ultrasonic distance sensors is greater than the distance threshold, it means that the patient's side lying angle is large and close to vertical, the monitoring unit returns to the initial state, and the information processing unit sends control information to control the monitoring end to move vertically downward through the pitch motor, determine the direction of the patient's head through the infrared camera, control the first turntable through the first motor, adjust the first connecting rod to a horizontal state according to the direction of the patient's head, control the second turntable through the second motor so that the second connecting rod moves vertically downward, and control the monitoring end to face the patient's chest through the pitch motor, and update the current angle of the first connecting rod in the first storage unit. If the detection values ​​of the two ultrasonic distance sensors are both less than the distance threshold, the information processing unit Send control information, control the monitoring end to move vertically downward through the pitch motor, determine the direction of the patient's head through the infrared camera, calculate the patient's side-lying angle θ according to the detection value of the ultrasonic distance sensor, calculate the set angle of the first connecting rod according to the direction of the patient's head and the side-lying angle θ, at the set angle, the first connecting rod is perpendicular to the plane where the patient's upper body is located, obtain the adjustment angle of the first connecting rod according to the set angle and the current angle of the first connecting rod in the first storage unit, control the first motor according to the adjustment angle, so that the first connecting rod reaches the set angle, adjust the second connecting rod and the third connecting rod according to the real-time image of the infrared camera, so that the monitoring end faces the patient's chest, and update the current angle of the first connecting rod in the first storage unit. The calculation process of the side-lying angle θ is: Figure 4As shown, S1 is the position of the first ultrasonic distance sensor, S2 is the position of the second ultrasonic distance sensor, S3 is the position of the ultrasonic signal emitted by the first ultrasonic distance sensor on the mattress, the distance between S1 and S2 is fixed and can be set in advance, denoted as D1, the distance between S1 and S3 can be obtained by the first ultrasonic distance sensor, denoted as D2, because the ultrasonic distance sensor is in a vertical state relative to the patient's shoulder, for the convenience of calculation, the shoulder is set as a straight line, then D1 and D2 are perpendicular to each other, the distance between S2 and S3 can be calculated by the Pythagorean theorem, denoted as D3, and the side lying angle θ=arcsin(D2 / D3).

[0048] The specific process of health detection based on the patient's heart rate data and respiratory rate data and alarming when an abnormality occurs is that the second storage unit stores the normal range of heart rate, the normal range of respiratory rate and the neural network model, the second processing unit compares the patient's heart rate data with the normal range of heart rate, and compares the patient's respiratory rate data with the normal range of respiratory rate. If the detection value exceeds the normal range, an alarm is sent to the nurse station through the second communication unit. The second processing unit inputs the patient's heart rate data and respiratory rate data into the neural network model for judgment. If the judgment result is that an abnormality exists, an alarm is sent to the nurse station through the second communication unit. The construction process of the neural network model is based on the TensorFlow framework, using the standard arrhythmia database Arrhythmic Datebase of the MIT-BIH database for learning and training, and establishing a neural network model through machine learning.

[0049] 2) Emotional state monitoring. Specifically, the posture detection unit and the monitoring unit cooperate with each other to determine the patient's emotional state and send an alarm to the nurse station when the emotional state is abnormal. The specific steps are as follows:

[0050] S21. Initialize the change quantity m to 0.

[0051] S22, receiving the pressure sensor data of the second sub-unit, comparing the pressure sensor data of the second sub-unit with the current pressure sensor data stored in the second storage unit, calculating the ratio of pressure sensors whose sensor data change amplitude is greater than the set threshold to the total number of pressure sensors as the change area ratio, if the change area ratio is greater than the change threshold, storing the time of receiving the pressure sensor data in the second storage unit, adding 1 to the change number m, and entering S23, otherwise, entering S25.

[0052] S23, determine whether the number of changes m is equal to 10. If the number of changes m is equal to 10, obtain the time of receiving the pressure sensor data in the second storage unit, calculate the average interval between the times, if the average interval is less than the interval threshold, start the microphone, collect the patient's voice data, and the negative emotion recognition model determines whether the patient has negative emotions based on the voice data. If the recognition result of the negative emotion recognition model is that negative emotions exist, an alarm is sent to the nurse station. The negative emotion recognition model is a discrete emotion model implemented based on a support vector machine, and is trained using machine learning. If the recognition result of the negative emotion recognition model is that there is no negative emotion, or the average interval is greater than or equal to the interval threshold, a data time period is constructed based on the earliest time and the latest time of the time of receiving the pressure sensor data in the second storage unit, and the data time period is stored in the second storage unit as a potential emotion fluctuation time period, which can be displayed on the display operation screen when medical staff make rounds. If the number of changes m is not equal to 10, enter S25.

[0053] S24, deleting the time of receiving the pressure sensor data stored in the second storage unit, and initializing the change quantity m to 0.

[0054] S25 , updating the current pressure sensor data stored in the second storage unit to the received pressure sensor data of the second sub-unit, and returning to S22 .

[0055] The above disclosure is only the preferred embodiment of the present invention, and certainly cannot be used to limit the scope of the present invention. It should be pointed out that for those skilled in the art, any equivalent changes made to the scheme of the present invention without departing from the design structure and principle of the present invention are considered to be within the protection scope of the present invention.

Claims

1. A monitoring system for cardiac surgery nursing, characterized in that: The monitoring system for cardiac surgery nursing includes an information processing unit, a posture detection unit, a position adjustment auxiliary unit and a monitoring unit; The information processing unit is arranged on the side of the nursing bed, the posture detection unit is arranged in the mattress, the position adjustment auxiliary unit is arranged on the shoulder of the patient, and the monitoring unit is arranged on the wall corresponding to the nursing bed; The information processing unit is in communication connection with the posture detection unit, the position adjustment auxiliary unit and the monitoring unit to control the working process of the monitoring system for cardiac surgery nursing.

2. The cardiac surgery nursing monitoring system according to claim 1, characterized in that: The posture detection unit includes multiple pressure sensors, which are evenly distributed inside the mattress. The posture detection unit is divided into a first subunit and a second subunit. The pressure sensors included in the first subunit are located in the upper half of the mattress, and the pressure sensors included in the second subunit are located in the lower half of the mattress.

3. The monitoring system for cardiac surgery nursing according to claim 2, characterized in that: The position adjustment auxiliary unit includes two ultrasonic distance sensors, which are respectively arranged on the left and right shoulders of the patient, and the ultrasonic distance sensors are in a vertical state relative to the patient's shoulders.

4. The monitoring system for cardiac surgery nursing according to claim 3, characterized in that: The monitoring unit includes a mounting base, which is arranged on a wall corresponding to the nursing bed. The mounting base is connected to a first connecting rod through a first turntable, the first connecting rod is connected to a second connecting rod through a second turntable, the second connecting rod is connected to a third connecting rod through a pitch motor, and the third connecting rod is connected to the monitoring end.

5. The monitoring system for cardiac surgery nursing according to claim 4, characterized in that: A millimeter-wave radar detection module is arranged at the center of the monitoring end, an infrared camera and a microphone are symmetrically arranged around the millimeter-wave radar detection module, and a first processing unit, a first communication unit and a first storage unit are arranged inside the mounting base.

6. The monitoring system for cardiac surgery nursing according to claim 5, characterized in that: The information processing unit includes a display operation screen, a second processing unit, a second communication unit and a second storage unit. The functions of the information processing unit include: 1) Start the millimeter-wave radar detection module of the monitoring end, judge the patient's posture according to the posture detection unit, adjust the detection position of the monitoring end in combination with the patient's posture and the position adjustment auxiliary unit, send the detection data to the information processing unit, separate the patient's heart rate data and respiratory rate data from the detection data, perform health detection based on the patient's heart rate data and respiratory rate data, and alarm the nurse station when an abnormality occurs; 2) The posture detection unit and the monitoring unit cooperate with each other to determine the patient's emotional state and alert the nurse station when the emotional state is abnormal.

7. The monitoring system for cardiac surgery nursing according to claim 6, characterized in that: The specific process of judging the patient's posture according to the posture detection unit and the position adjustment auxiliary unit is as follows: S11, calculating the ratio of the pressure sensors whose pressure values ​​are greater than the pressure threshold in the first sub-unit to the total number of pressure sensors as the coverage ratio. If the coverage ratio is greater than the first ratio threshold, the patient is in the first posture. At this time, the patient lies flat on the mattress, and the posture judgment ends. Otherwise, proceeding to S12; S12. If the coverage ratio is greater than the second ratio threshold, the patient is in the second posture, and the patient lies on the mattress sideways. Otherwise, the patient is in the third posture, and the patient's upper body leaves the mattress, and the posture judgment ends.

8. The monitoring system for cardiac surgery nursing according to claim 7, characterized in that: The specific process of adjusting the detection position of the monitoring end by combining the patient's posture and the position adjustment auxiliary unit is as follows: When the patient is in the first posture, the information processing unit sends control information, the monitoring unit returns to the initial state, controls the monitoring end to move vertically downward to face the patient's chest through the pitch motor, and updates the current angle of the first connecting rod in the first storage unit; When the patient is in the second posture, if at least one of the detection values ​​of the two ultrasonic distance sensors is greater than the distance threshold, it means that the patient's side lying angle is large and close to vertical, the monitoring unit returns to the initial state, and the information processing unit sends control information to control the monitoring end to move vertically downward through the pitch motor, determine the direction of the patient's head through the infrared camera, control the first turntable through the first motor, adjust the first connecting rod to a horizontal state according to the direction of the patient's head, control the second turntable through the second motor so that the second connecting rod moves vertically downward, and control the monitoring end to face the patient's chest through the pitch motor, and update the current angle of the first connecting rod in the first storage unit. If the detection values ​​of the two ultrasonic distance sensors are both less than the distance threshold, the information processing unit Send control information, control the monitoring end to move vertically downward through the pitch motor, determine the direction of the patient's head through the infrared camera, calculate the patient's side-lying angle θ according to the detection value of the ultrasonic distance sensor, calculate the set angle of the first connecting rod according to the direction of the patient's head and the side-lying angle θ, at the set angle, the first connecting rod is perpendicular to the plane where the patient's upper body is located, obtain the adjustment angle of the first connecting rod according to the set angle and the current angle of the first connecting rod in the first storage unit, control the first motor according to the adjustment angle, so that the first connecting rod reaches the set angle, adjust the second connecting rod and the third connecting rod according to the real-time image of the infrared camera, so that the monitoring end is facing the patient's chest, and update the current angle of the first connecting rod in the first storage unit.

9. The monitoring system for cardiac surgery nursing according to claim 6, characterized in that: The specific process of performing health checks based on the patient's heart rate data and respiratory rate data and issuing an alarm when an abnormality occurs is that the second storage unit stores a normal heart rate range, a normal respiratory rate range and a neural network model, the second processing unit compares the patient's heart rate data with the normal heart rate range, and compares the patient's respiratory rate data with the normal respiratory rate range. If the detected value exceeds the normal range, an alarm is issued to the nurse station through the second communication unit. The second processing unit inputs the patient's heart rate data and respiratory rate data into the neural network model for judgment. If the judgment result is that an abnormality exists, an alarm is issued to the nurse station through the second communication unit.

10. The monitoring system for cardiac surgery nursing according to claim 6, characterized in that: The specific process of the posture detection unit and the monitoring unit cooperating with each other to judge the patient's emotional state and alarming the nurse station when the emotional state is abnormal is as follows: S21, initializing the change quantity m to 0; S22, receiving the pressure sensor data of the second sub-unit, comparing the pressure sensor data of the second sub-unit with the current pressure sensor data stored in the second storage unit, calculating the ratio of the pressure sensors whose sensor data change amplitude is greater than the set threshold to the total number of pressure sensors as the change area ratio, if the change area ratio is greater than the change threshold, storing the time of receiving the pressure sensor data in the second storage unit, adding 1 to the change number m, and entering S23, otherwise, entering S25; S23, determine whether the change number m is equal to 10, if the change number m is equal to 10, obtain the time of receiving the pressure sensor data in the second storage unit, calculate the average interval between the times, if the average interval is less than the interval threshold, start the microphone, collect the patient's voice data, and the negative emotion recognition model determines whether the patient has negative emotions based on the voice data. If the recognition result of the negative emotion recognition model is that negative emotions exist, an alarm is sent to the nurse station. If the recognition result of the negative emotion recognition model is that negative emotions do not exist, or the average interval is greater than or equal to the interval threshold, a data time period is constructed based on the earliest time and the latest time of the time of receiving the pressure sensor data in the second storage unit, and the data time period is stored in the second storage unit as a potential emotion fluctuation time period, which can be displayed on the display operation screen when medical staff make rounds. If the change number m is not equal to 10, enter S25; S24, deleting the time of receiving the pressure sensor data stored in the second storage unit, and initializing the change quantity m to 0; S25 , updating the current pressure sensor data stored in the second storage unit to the received pressure sensor data of the second sub-unit, and returning to S22 .

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