CN113096358B - Patient nursing auxiliary system based on Internet of things - Google Patents

Abstract

The invention discloses a patient care assistant system based on the Internet of Things, which includes an answering system and a calling terminal. The call terminal is provided with a priority detection module for identifying the state of pressing the call button and an IoT detection terminal for monitoring the state of the patient and the environment. When it is detected that the call key is continuously pressed and the time interval between two key presses is less than the continuous threshold Tc, a high-level call state is sent at this time. When the call button is pressed alone, the normal-level call state is sent at this time. When the call button is kept pressed for a long time or kept pressed intermittently, and the button is not triggered at the same time, the confirmation-level call state is sent at this time. The invention can identify the needs of the patient in real time, determine whether the patient needs to perform an emergency nursing operation, and arrange the corresponding nurse or a nearby nurse to take care of the patient, so as to improve the efficiency of nursing work, improve the quality of nursing service, and reduce the need for nursing care. Probability of causing a critical situation in a patient in time.

Description

IoT-based patient care assistance system

technical field

The invention relates to the technical field of medical communication, in particular to a patient care assistant system based on the Internet of Things.

Background technique

With the continuous development of the medical and health industry, the degree of intelligence and informatization of hospitals has gradually improved, the medical system has also been gradually improved, and the application of hospital nursing call systems has become more and more extensive. In the prior art, a nursing call system includes a management host and nursing calling devices installed in various places in the hospital and connected to the management host respectively. When the patient needs, they can initiate a call request through the nearby nursing call device. After the management host receives the call request, it determines the source of the call request and sends the call information to other nursing call devices. The call information includes the source of the call request and other After the nursing call device receives the call information, it plays the source of the call request to remind the medical staff. After hearing the broadcast information, the medical staff can answer the call through the nursing call device, communicate with the patient, and provide assistance to the patient. But in the existing situation, the following two situations will occur:

1. The use of the button type cannot achieve the purpose of detection for some patients who are unable to press; the use of the touch button will cause misoperation and bring inconvenience to the nursing staff.

2 In the existing nursing call system, after the answering system receives the signal, it will arrange a nurse to deal with it. However, for large hospitals, there are multiple calls at the same time, and it is impossible to confirm which is more urgent after answering. Accurate and fast treatment of emergency patients.

Therefore, it is an urgent requirement to design an IoT-based patient care assistance system that can automatically identify the patient's call level.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide an IoT-based patient care assistance system with automatic identification of patient call levels.

The technical scheme of the technical problem to be solved by the present invention is:

A patient care assistance system based on the Internet of Things, including an answering system as a server and a call terminal as an Internet of Things terminal, the call terminal is provided with a priority detection module, and the priority detection module is used to identify the state of the pressing of the call button and determine the transmission The high-level call state is still the normal call state; it also includes an IoT detection terminal, which includes a bed state detection module, an environment detection module, and a transmission module; when it is detected that the call button is continuously pressed and pressed twice When the time interval of pressing the button is less than the continuous threshold Tc, the high-level call state is sent at this time; when the call button is pressed alone, the ordinary-level call state is sent at this time; when the call button is kept pressed for a long time or intermittently kept pressed When the key is not triggered at the same time, the confirmation-level call state is sent at this time; the high-level call state has priority over the ordinary-level call state; the answering system starts the call after receiving the high-level or confirmation-level call of the calling terminal The terminal-matched IoT detection terminal can identify whether it is the corresponding level through manual identification or artificial intelligence, and arrange nurses to provide services according to the results.

Preferably, when the number of times the call button is pressed is greater than the upper threshold N, or when the time when the call button is continuously pressed is greater than the normal threshold Ts, it is determined as an abnormal call state, and the IoT detection module is activated to confirm.

Preferably, the emergency detection module includes an induction coil, an amplifier circuit, and a permanent magnet, the induction coil is electrically connected to the input end of the amplifier circuit, and the amplifier circuit is electrically connected to the controller of the call terminal; the induction coil is provided with In the lower part of the button, the permanent magnet is arranged on the side of the button, or the permanent magnet is arranged on the lower part of the button, and the magnetic field direction of the permanent magnet is parallel to the axis direction of the induction coil, and the induction coil is arranged on the side of the button. In the lower part, when the button and the permanent magnet move relative to each other, the induction coil generates electromotive force; the controller detects the change of the generated electromotive force, wherein the period of the electromotive force change corresponds to the time interval of the button, and the peak or valley value of the electromotive force in the continuous fluctuation period The number corresponds to the number of keys.

Preferably, when the induction coil is located at the lower part of the button, the permanent magnets are arranged on both sides of the induction coil; when the permanent magnet is arranged at the lower part of the button, two permanent magnets are arranged and the two permanent magnets attract each other, and the induction The coil is arranged between the two permanent magnets.

Preferably, the priority detection module is a pressure sensor, the pressure sensor is arranged at the lower part of the button, and the pressure sensor is electrically connected to the controller of the call terminal; the controller detects the change of the generated pressure value, wherein the pressure value changes The period corresponds to the time interval of the keys, and the number of peaks of the pressure value in the continuously fluctuating time period corresponds to the number of keys.

Further, the bed state detection module is a pressure sensor, the pressure sensor is evenly arranged on the outer periphery of the bed body, and the environment detection module is a sound recorder.

Further, the IoT detection terminal is normally in a standby state, and after the emergency detection module detects signal fluctuations, it starts the IoT detection terminal, and the IoT detection terminal activates the bed state detection module and the environment detection module to collect the environment. information; after the calling terminal sends the call information, the IoT detection terminal sends the collected information to the answering system; the answering system determines whether the call level sent by the calling terminal is accurate according to the data collected by the IoT detection terminal, and if it is accurate, performs medical treatment. .

Further, the method for judging whether the call level sent by the calling terminal is a high level or an ordinary level includes the following steps: calculating the difference between any two pressure sensors at each time point, and if any difference is greater than the severe threshold, it means that the patient In the activity and pressing the button, if not, play the recording, and judge manually through the recording.

Further, the method for judging whether the call level sent by the calling terminal is a confirmation level includes the following steps: calculating the difference between any two pressure sensors at each time point, and if any difference is greater than the severe threshold, it exists within the time period at the same time. The output value of the pressure sensor keeps fluctuating.

Further, the call terminal is provided with a nurse identification module, and further includes a nurse identification terminal, and the nurse identification terminal is worn on the nurse; when the nurse performs nursing work in front of the hospital bed corresponding to the call terminal, the identification module of the call terminal automatically identifies the nurse. Identify the terminal, and send the nurse's information to the response system; when the response system detects a patient who needs emergency treatment, it determines the nurse's position through the nurse identification module and sends a nursing request to the nearest nurse; the nurse identification module is Bluetooth module, the nurse identification terminal is a mobile phone, pda or tablet equipped with a Bluetooth module; or the nurse identification module is a radio frequency card reader, the nurse identification terminal is a radio frequency card, and the identification range of the radio frequency card reader is greater than The length of the hospital bed.

The beneficial effects of the present invention are:

The technical solution disclosed in the present invention can identify the needs of the patient in real time, determine whether the patient needs to perform an emergency nursing operation, and arrange a corresponding nurse or a nearby nurse to take care of the patient. The application of the technical solution of the present invention can improve the efficiency of nursing work, thereby improving the quality of nursing services, and at the same time, reducing the probability of patients in critical situations due to untimely nursing.

Description of drawings

1 is a schematic diagram of a button of a calling terminal according to an embodiment of the present invention;

2 is a schematic diagram of a button of a calling terminal according to another embodiment of the present invention;

Figure 3 is a schematic diagram of the overall system of the present invention.

In the picture:

130, nurse identification module; 120, IoT detection terminal; 110, emergency detection module; 100, call terminal; 200, answering system; 12, permanent magnet; 11, amplifier circuit; 10, induction coil;

Detailed ways

In order to make the technical solutions and beneficial effects of the present invention clearer, the embodiments of the present invention are further explained in detail below.

The invention discloses a patient nursing assistant system based on the Internet of Things, which is mainly used to solve the problem of assisting the confirmation of the priority level of the nursing service required by the patient in the current call nursing system, and to solve the problem of the increase of nursing workload caused by the multiple actions of the nurses back and forth. big. The system includes a calling terminal and an answering system, and data transmission is realized between the calling terminal and the answering system through wired or wireless means.

First of all, the call terminal is improved, including the improvement of the keys of the call terminal and the setting of the Internet of Things detection terminal on the call terminal. The calling terminal is provided with a priority detection module, and the priority detection module is used to identify the state of pressing the call button to determine whether to send a high-level call state or a normal call state, that is, to realize the recognition of the state of pressing the button by improving the button. The pressed state determines whether the patient really needs care or is an invalid call caused by a mishandling, or is in urgent need of nursing care for the patient.

The IoT detection terminal includes a bed state detection module, an environment detection module and a transmission module. The bed state detection module is mainly used to detect the pressure of each support mechanism of the bed, so as to judge whether the patient is in an active state. In the normal state, the pressing of the call button is realized, and the physical activity has a certain law. The above-mentioned law can be detected by the bed state detection module, and the confirmation of the button-pressing can be realized by judging whether the above-mentioned law is met. The environmental detection module is mainly used to collect environmental data, including recording sound, recording video or images, and collecting gas. If the hospital bed is a high-end hospital bed with instruments and equipment to collect the physiological data of the patient, etc., the IoT detection terminal can also set up a signal acquisition interface to obtain the data collected by each instrument, such as heart rate, blood pressure, blood oxygen saturation, etc. The above-mentioned data collected by the IoT detection terminal can also be used as a judgment basis. The transmission module is the communication module. At present, the communication modules used by the IoT detection terminal can be WiFi module, Bluetooth module, 4G communication module, NB-IoT communication module and so on. The IoT detection module sends the detected data to the response system, and the response system judges and gives the judgment result through the internal program.

Based on the above system, the present invention also discloses a method for judging a call state, comprising the following steps:

Scenario 1: It is detected that the call button is pressed continuously. At this time, the time interval between two consecutive button presses is judged. If the time interval is less than the continuous threshold Tc, it means that the patient or the escort is in a state of anxiety. . At this time, if the calling terminal detects the call, the calling terminal sends the high-level call status to the answering system; if the answering system detects the call, that is, the calling terminal sends the call to the answering system when the button is pressed, and the answering system performs the call according to the above method. Judgment, if the above rules are met, it is judged as a high-level call state, and priority processing is performed.

The continuous threshold value Tc is set to be 100ms-200ms according to the characteristics of the keys and the frequency of people pressing keys quickly, and 200ms is adopted in this embodiment.

In this state, there is a situation where children use this as a toy to press and play. In order to avoid false calls caused by this situation, the number of keys or the duration of the continuous key is limited, and the number of keys and the duration of the key can also be determined at the same time. Continue to press the time continuously, either of the two reaches the limit will cancel the call. At this time, when the number of times the call button is pressed is greater than the upper threshold N, or when the time when the call button is continuously pressed is greater than the normal threshold Ts, it is determined to be an abnormal call state, and the IoT detection module is activated for confirmation. The upper limit threshold N may be 5 to 10, and is limited to 10 in this embodiment, and if it is pressed for 10 times or more continuously, it will be judged as a malfunction, and the call will not be started. The normal threshold Ts is set to 2 to 5 seconds, and in this embodiment, it is set to 3 seconds, and the abnormal-level call state is determined after the continuous pressing action lasts for 3 seconds.

In this state, the call can be cancelled, the call signal can also be sent, and the data collected by the Internet of Things detection module is sent to the answering system 200, and whether it is true through the artificial intelligence identification module of the answering system 200 or manually by the management personnel. call.

Situation 2: When the call button is pressed independently, that is, it is not pressed multiple times within the set time range, for example, the button is not pressed a second time within 5 seconds. At this time, it can be confirmed that the call status is normal.

Scenario 3: Corresponding to weak patients, sometimes it is impossible to press the button or the button. At this time, the patient may touch the button but cannot trigger the button, so that the button is in a state of disturbance for a long time. At this point, the patient needs services but is unable to call a nurse. For this state, when the call button is kept pressed for a long time or kept pressed intermittently, and the button is not triggered at the same time, the confirmation-level call state is sent at this time. At this time, the nurse call is also triggered, and a request for nursing is sent to the response system.

Scenario 4: Malfunction detection, when the button is continuously pressed, for example, the hand-held call device is scattered on the bed and is pressed by the patient, and the button is in a long-term malfunction state. At this time, the button is pressed and held. The time length of the call will be ignored if the set abnormal malfunction threshold is reached. Secondly, the button is triggered after being hit or dropped. At this time, the speed of pressing the button is detected, and it is judged by the fluctuation of the detection signal. If the time of triggering the button is less than the abnormal fluctuation threshold, if it is less than 10ms, it is judged as abnormal. call status, and cancel the call.

In the above call state, the high-level call state takes precedence over the common-level call state.

The above situation is a preliminary judgment. For the high-level call status and the normal-level call status, the accuracy of the judgment is higher, but for the confirmation-level call and the canceled call status, further confirmation is required. At this time, the Internet of Things can be sent synchronously. The data detected by the detection terminal is used for judgment, or the response system requests the IoT detection terminal to send the collected data for further judgment.

After receiving the high-level or confirmation-level call of the calling terminal, the answering system starts the IoT detection terminal matched with the calling terminal, identifies the corresponding level through manual identification or artificial intelligence, and arranges nurses to provide services according to the results.

The above-mentioned determination method may be implemented in the calling terminal 100 or in the answering system 200 . The realization of the high-level call state and the normal call state can be identified in the above two devices. When judging the abnormal-level call state, it needs to be performed on the calling terminal 100. Based on this, the emergency detection module in the present invention includes an induction coil 10. , an amplifier circuit 11, a permanent magnet 12, the induction coil 10 is electrically connected to the input end of the amplifier circuit 11, and the amplifier circuit 11 is electrically connected to the controller of the calling terminal.

As shown in FIG. 1 , the induction coil is arranged on the lower part of the button, and the permanent magnet 12 is arranged on the side of the button. Or as shown in FIG. 2 , the permanent magnet is arranged at the lower part of the key. In the above two structural modes, the magnetic field direction of the permanent magnet 12 must be set parallel to the axis direction of the induction coil 10 . At this time, when the induction coil and the permanent magnet move relative to each other, the magnetic flux inside the induction coil changes, which in turn generates electromotive force at both ends of the induction coil. A resistor is connected to the outer end of the induction coil to generate a circulating current. The connection point between one of the induction coils and the resistance is connected to the input end of the operational amplifier, and the output end of the operational amplifier is electrically connected to the controller.

The controller recognizes based on changes in the generated electromotive force. Since the pressed state changes, but the change process is regular, by collecting the period of electromotive force changes, the time of pressing the button once can be determined, and then the time interval of pressing the button once can be determined. The time interval can be the time period for pressing the key once, or the interval time between two key presses. When calculating the interval time between two key presses, it is to detect the duration of the 0 electromotive force between the two electromotive force waveforms generated by the key press. When the time interval is the period of pressing the button once, and the time interval is the time period between two button presses, the continuous threshold value Tc has different values in the two states.

By calculating the number of peaks or valleys of the electromotive force in the continuous fluctuating time period, the number of keys corresponds to the number of keys. After the time interval and the number of keys are obtained, the determination can be made according to the method disclosed in the present invention.

The keys will have a perturbed state and a stable trigger state. The present invention can also trigger a call when a disturbance state is detected, so as to avoid failure to receive timely rescue because the patient cannot trigger the button. For some patients, after touching the call terminal, they press the button, but due to their weakness, they cannot trigger the button. Through the improved button of the present invention, a weak electromotive force will be generated in the fluctuating state. After the amplification, a fluctuating voltage signal will be detected. According to the duration of the voltage signal, it is determined that the time is in need of nursing but the button cannot be pressed. Set the time length of the fluctuating voltage signal that satisfies the call state of the confirmation level from 1 to 5 seconds. In this embodiment, 1 second is used as the threshold. When the fluctuating voltage signal lasts for one second, it is determined to be in the call state of the confirmation level. After the fluctuating state continues for one second, it is determined to be a confirmation-level call state. In this state, the call system of the calling terminal can be dialed for confirmation, or the data collected by the IoT detection terminal can be read for judgment.

Better, in order to make the induction coil generate a larger electromotive force, as shown in FIG. 3 , when the induction coil 10 is located at the lower part of the button, the permanent magnets 12 are arranged on both sides of the induction coil 10; When the lower part of the key is pressed, two permanent magnets are arranged and the two permanent magnets attract each other, and the induction coil 10 is arranged between the two permanent magnets.

Based on the above principle, the method of detecting the button pressure can be used for judgment. The basis for the judgment in the above principle is the electromotive force, and the basis for the judgment in this method is the pressure value. In the final state, the pressure value is also converted into a voltage value. In this method, the emergency detection module is a pressure sensor, the pressure sensor is arranged at the lower part of the button, and the pressure sensor is electrically connected to the controller of the call terminal. The pressure sensor can be arranged at the lower part of the button, and the lower part of the button is provided with a spring for restoring, and the pressure sensor is arranged between the spring and the button. The pressure sensor can also be arranged between the return spring of the key itself and its support mechanism. The button or button of the reset mechanism is directly installed on the lower part of the button to bear the force.

The controller detects the change of the generated pressure value, wherein the period of the pressure value change corresponds to the interval time of the keys, and the number of peaks of the pressure value in the continuously fluctuating time period corresponds to the number of keys. It is determined in the same manner as described above.

In this embodiment, it is determined whether the patient is pressing the call button by detecting the movement law of the patient on the bed. In order to detect this state, the bed state detection module in this embodiment is a pressure sensor. The pressure sensors are evenly arranged on the outer circumference of the bed body. Specifically, the main body shape of the bed itself is a rectangle, and the lower part thereof is provided with supporting legs. In this embodiment, the sensor matrix can be arranged in the lower part of the upper plane of the bed, in which case the sensors are evenly distributed on the lower bed surface of the patient's body. Each sensor detects the pressure value of a part, and the pressure range can be detected by the pressure value, and then the position of the patient lying on the bed can be determined. During the process of the patient's activity, the pressure value of each pressure sensor will change, and then Changes in the patient's movement or movement of body parts can be detected. Through artificial intelligence in-depth learning of the changes of each pressure sensor of the sensor matrix under the action of various buttons, the function of intelligently identifying the pressing of the call button is achieved.

More simply, a pressure sensor is set between the bed board and the support leg of the bed board. In most cases, pressure sensors are set on the periphery of the lower part of the bed body, and 6 to 8 pressure sensors can be set in a week. In the case of picking up the call terminal or reaching the call button, the force of each pressure sensor is different, and it can be determined whether the call button is pressed by judging the difference. Better, the pressure value of each pressure sensor is different when the call terminal or the call button is reached. In order to ensure better accuracy, the pressure value of any two pressure sensors during the execution of the action is calculated by It is compared with the set pressure value difference of taking the call terminal or reaching the call button to determine whether a nursing call is being made.

The method for judging whether the call level sent by the calling terminal is a high level or a normal level includes the following steps:

Calculate the difference between any two pressure sensors at each time point. If any difference is greater than the violent threshold, it means that the patient is moving and pressing the button. If the calling terminal is in no position of the bed, in order to call the patient, it will move to this position. At this time, the pressure value of the pressure sensor corresponding to this position will increase, and the pressure value of the pressure sensor far away from this position will decrease. At this time, the difference of the pressure sensor of this amount will be greater than the violent threshold, and the appropriate violent threshold is determined through actual testing and statistics.

Further, when it is detected that the difference between the two pressure sensors is greater than the severe threshold, it is detected whether the pressure value of the pressure sensor is in a changed state within the changed time period, and if it is in a changed state, it is determined that the call button is pressed. operation, if it remains stable, it means that the button is not pressed.

The environment detection module is a recorder or a camera. The environmental detection module is used to collect environmental information, including patient description information and patient image information. The IoT detection terminal collects this information and sends it to the answering system so that the answering system can confirm whether the nursing call is real.

In order to achieve the effect of energy saving, the IoT detection terminal is normally in a standby state. After the emergency detection module detects signal fluctuations, it starts the IoT detection terminal, and the IoT detection terminal collects information after it is started. The IoT detection terminal activates the bed state detection module and the environment detection module to collect environmental information. After the calling terminal sends the calling information, the IoT detection terminal sends the collected information to the answering system.

When the answering system is determined to be a high-level call state and a confirmation-level call state, it determines whether the call level sent by the calling terminal is accurate according to the data collected by the IoT detection terminal, and if it is accurate, it will arrange medical care.

This embodiment discloses a method for determining by the bed detection module. If the determination by the bed detection module is inaccurate, the recording information collected by the environment detection module is played, and the content of the recording is manually judged for confirmation. Or connect to a voice call to make a judgment.

Preferably, in order to accurately confirm the position of the nurse so as to arrange for a nearby nurse to handle nursing work, a nurse identification module 130 is also provided on the call terminal. At the same time, a nurse identification terminal to be used in conjunction with it is configured on the nurse. When a nurse or a nurse approaches the call terminal, the nurse identification module 130 of the call terminal automatically identifies the nurse identification terminal, and sends the read data to the answering system. The nurse identification terminal stores nurse information, such as the nurse's name, serial number, and the like.

After answering the call of the corresponding patient of the system, the answering system may determine the nearest nurse to the called patient according to the nurse position data sent by the calling terminal to provide services to the patient. Especially when the patient needs urgent treatment. Determine the position of the nurse through the nurse identification module and send a nursing request to the nearest nurse.

Based on the above functions, the nurse identification module is a Bluetooth module, and the nurse identification terminal is a mobile phone, a pda or a tablet equipped with a Bluetooth module. The bluetooth module of the calling terminal is always on, and has the function of automatically connecting to the bluetooth module. When the bluetooth module of the calling terminal is connected to other bluetooth modules, it sends an instruction to obtain information. If there is no information reply, the bluetooth module is disconnected. If the information is replied and the identification information is the nurse identification terminal worn by the nursing staff, the acquired data will be sent to the response system. If the received information is not the nurse identification terminal, disconnect. This configuration can effectively avoid connecting the Bluetooth module of the patient and his accompanying staff. At this time, the information stored in the nurse identification terminal should include identification information, which can confirm that the connected module is the identification terminal of the nurse.

In addition to the above active connection method, a passive connection method can also be used, that is, the nurse identification module is a radio frequency card reader, the nurse identification terminal is a radio frequency card, and the identification range of the radio frequency card reader is greater than the length of the hospital bed .

To sum up, it is only a preferred embodiment of the present invention, and is not used to limit the scope of the present invention. Through the above description, relevant staff can make various modifications without departing from the technical idea of the present invention. changes and modifications. The technical scope of the present invention is not limited to the content of the specification, and all the so-called equivalent changes and modifications of the shape, structure, feature and spirit described in the scope of the claims of the present invention shall be included in the scope of the claims of the present invention.

Claims (6)

1. Patient nursing auxiliary system based on thing networking, including answering system (200) as server end and call terminal (100) as thing networking terminal, its characterized in that:

the calling terminal is provided with a urgency detection module (110) which is used for identifying the state of pressing a calling key and determining whether a high-grade calling state or a common calling state is sent;

the bed body state detection system further comprises an Internet of things detection terminal (120) which comprises a bed body state detection module, an environment detection module and a transmission module;

the emergency detection module comprises an induction coil (10), an amplification circuit (11) and a permanent magnet (12), wherein the induction coil (10) is electrically connected with the input end of the amplification circuit (11), and the amplification circuit (11) is electrically connected with a controller of the calling terminal;

the induction coil is arranged at the lower part of the key, the permanent magnet (12) is arranged at the side surface of the key, or the permanent magnet is arranged at the lower part of the key,

the magnetic field direction of the permanent magnet (12) is parallel to the axial direction of the induction coil (10), the induction coil is arranged at the lower part of the key, and when the key and the permanent magnet move relatively, the induction coil generates electromotive force;

the controller detects the variation of the generated electromotive force, wherein the period of the variation of the electromotive force corresponds to the time interval of the key, and the number of the peak value or the valley value of the electromotive force in the continuous fluctuating time period corresponds to the times of the key;

when the calling key is detected to be continuously pressed and the time interval of pressing the key twice is smaller than a continuous threshold Tc, sending a high-level calling state at the moment;

when the calling key is pressed down independently, the ordinary calling state is sent;

when the calling key is in a long-time pressing state or in a discontinuous pressing state and the key is not triggered, sending a confirmation calling state;

the high-level call state takes precedence over the normal-level call state;

after receiving a high-grade or confirmation-grade call of the calling terminal, the answering system starts an Internet of things detection terminal matched with the calling terminal, identifies whether the call is of a corresponding grade through artificial identification or artificial intelligence, and arranges nurses to serve according to results.

2. The internet of things-based patient care assistance system of claim 1, wherein:

and when the number of times of pressing the calling key is greater than an upper limit threshold value N or the time of continuously pressing the calling key is greater than a normal threshold value Ts, judging that the calling state is an abnormal calling state, and starting the Internet of things detection module for confirmation.

3. The internet of things-based patient care assistance system of claim 1, wherein:

when the induction coil (10) is positioned at the lower part of the key, the permanent magnets (12) are arranged at two sides of the induction coil (10); when the permanent magnet (12) is arranged at the lower part of the key, the two permanent magnets are arranged and attracted with each other, and the induction coil (10) is arranged between the two permanent magnets.

4. The internet of things-based patient care assistance system of claim 3, wherein:

the bed body state detection module is a pressure sensor, the pressure sensor is uniformly arranged on the periphery of the bed body, and the environment detection module is a recorder.

5. The internet of things-based patient care assistance system of claim 4, wherein:

the Internet of things detection terminal is in a standby state in a normal state, after the emergency detection module detects signal fluctuation, the Internet of things detection terminal is started, and the Internet of things detection terminal starts the bed body state detection module and the environment detection module to acquire environment information;

after the calling terminal sends calling information, the Internet of things detection terminal sends the collected information to a response system;

the response system judges whether the calling grade sent by the calling terminal is accurate according to the data collected by the Internet of things detection terminal, and if the calling grade is accurate, medical care treatment is carried out.

6. The internet of things-based patient care assistance system of claim 1, wherein:

the call terminal is provided with a nurse identification module (130) and further comprises a nurse identification terminal, and the nurse identification terminal is worn on a nurse;

when a nurse carries out nursing operation before a sickbed corresponding to the calling terminal, the identification module of the calling terminal automatically identifies the nurse identification terminal and sends nurse information to the response system;

when the response system detects that a patient needing emergency treatment exists, the position of the nurse is determined through the nurse identification module, and a nursing request is sent to the nearest nurse;

the nurse identification module is a Bluetooth module, and the nurse identification terminal is a mobile phone, pda or tablet provided with the Bluetooth module;

or the nurse identification module is a radio frequency card reader, the nurse identification terminal is a radio frequency card, and the identification range of the radio frequency card reader is larger than the length of the hospital bed.

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