Claims:1. A smart saline monitoring system characterized by two hardware systems,
a patient care system, with load sensor (100), nurse call button (101) and stop button (102),
a central monitoring system, with LCD (106) and LED (107) displays, nurse call indicators (108),
a Cloud server (104),
NODE MCU (103) (ESP8266) and
a mobile application (105)
2. The smart saline monitoring system as claimed in claim 1, wherein the said patient care system is available near the patient and responsible for monitoring continuously.
3. The smart saline monitoring system as claimed in claim 1, wherein the said load sensor (100) measures the weight and the output will be in the form of electrical pulses.
4. The smart saline monitoring system as claimed in claim 1, wherein the said the central monitor system monitors the patient status, which is placed in the caretakers control room.
5. The smart saline monitoring system as claimed in claim 1, wherein the said entire setup interfaced with the cloud server (104) through Node-MCU (103) which acts as a database for the patient.
6. The smart saline monitoring system as claimed in claim 1, wherein the said Node Micro-Controller Unit is an open-source development board and has built in an inexpensive system on-chip (107) called ESP8266 and the said microcontroller has on-board Wi-Fi connectivity which connects to the local internet.
7. The smart saline monitoring system as claimed in claim 1, wherein the said application (105) is developed and interfaced with Node-MCU (103) to alert the caretaker about the status of the patients and the name of the nurse assistant.
8. The smart saline monitoring system as claimed in claim 1, wherein the said application (105) receives the stored weight value of the saline level through the internet.
9. The smart saline monitoring system as claimed in claim 1, wherein the said level of the saline is depicted in three colours like Green, Red, and Yellow.
10. The smart saline monitoring system as claimed in claim 1, wherein the said mobile application (105) indicator, green represents saline is in the safer stage; yellow represents that the level is in the medium stage; red represents that the saline bottle must be replace or it is in a critical stage.
, Description:The present invention relates to the field of patient monitoring system. More specifically, aims to remotely monitor the level of the saline solution in the saline bag/bottle and call the nurse/caretaker whenever the patient needs them. When the saline level is below the threshold level, the system will alert the caretaker/nurse through the central monitor and mobile phone.
BACKGROUND OF THE INVENTION:
Technological advancement promotes automation in almost every field. In healthcare, this progress leads to innovations like minimally-invasive surgeries, better monitoring systems, comfortable scanning equipment, etc. These innovations promote the overall wellness of the general population. Some of the technological advancement implemented in healthcare are IoT (Internet of Things), EHR (Electronic Health Record), Remote Care, Retail Clinics, AR (Augmented Reality), Blockchain. IoT enables computing devices to send and receive data over a network without requiring human to human or human to computer interaction. It also enables people and devices to communicate with each other and generate real-time data for analysis. It incorporates in many areas, including Embedded technology, Artificial Intelligence, Machine Learning etc.
Saline is a solution in which salt content does dissolve in water. It is used for patients in hospitals to replenish lost fluid, flush wounds, prevent dehydration and maintain blood pressure in their body. In some cases, Medicines and nutrients to patients through this saline solution. In fluid resuscitation, normal saline does use as a replacement for blood products. This saline solution contains a bag/bottle that is hanged on a stand to drip down directly to the patient’s bloodstream through a needle penetrating the skin. World Health Organization reported in Global Health Observatory data that the availability of physicians per 1000 people is less than 1 The lack of caretakers in hospitals leads to an unpleasant situation in patient management. In urban and rural areas, Smart healthcare systems require to automate the process of treatment, management and decision.
Saline level monitoring is one of the significant challenges in the management of healthcare. Generally, in hospitals, caretakers/nurses are responsible for continuously monitoring the level of saline in saline bag/bottle. As the saline reaches its critical level, the caretaker/nurse replaces the empty bag/bottle with the new one. In case due to lack of workforce or negligence and inactiveness of caretaker/nurse, if the doctor or caretaker/nurse fails to replace the empty bag/bottle, it will lead the patient to have pressure imbalance and unpleasant situation even causing fatal death. So, this process can automate by monitoring the level of saline in saline solution to prevent unpleasant situation.
The patent US9782539B2, provides a weight sensing fluid level monitoring system for determining when the amount of fluid in a container, for example, a disposable plastic bag used for intravenous infusion or the collection of biological fluids or other waste from a human body has reached a point where the container must be replaced or emptied. The device in its various embodiments can provide both visual and audible alarms at the patient's bedside or wirelessly transmit the alarm to a remote location, such as a nurse's station, by way of the internet or intranet.
Another patent US5838223A, relates to a patient/nurse call system for a hospital includes patient stations capable of generating hospital calls and a remote master station which prioritizes and stores the calls. Hall units outside patient rooms identify the rooms from which the calls originate and the type of call. Each patient station allows selective retrieval and display of unanswered calls, and the system further permits audio interconnection between any two of the stations. Nurse-worn badges transmit pulse-coded infrared signals which are received by receivers at the patient stations and in response, the systems generates identity and location signals which are stored at the master station. The nurse location and identity information may also be retrieved and displayed at any patient station.
Yet another patent US3942526A, relates to an alarm system operative in conjunction with a venocylsis set which includes a drop chamber coupled to the output of a fluid bottle. The alarm system is provided with a float disposed in the drop chamber and responsive to the level of fluid pool therein. A proximity switch sensitive to the float position is removably attached to the exterior of the drop chamber to produce a switching action when the fluid level falls below a predetermined value. An alarm circuit is coupled to the proximity switch to generate a warning signal when the switching action occurs.
Various methods have been proposed earlier for monitoring the level of saline solution with some limitations such as cost, size, placement of sensors and creating a noisy environment in the hospital. Thus, the present invention designed and developed a system to monitor the level of saline solution in the saline bag/bottle by using the load sensor. Unlike other systems, this system has the advantage that the patient can call the nurse/caretaker whenever they are needed. We have used a load sensor interfaced with Node-MCU to monitor the level of saline solution in the saline bag/bottle, such that no changes need to the existing system, except to attach the load sensor to the stand and to hang the saline bag/bottle in the load sensor which will not practically use in any of the hospitals.
SUMMARY OF THE INVENTION:
The following summary is provided to facilitate a clear understanding of the new features in the disclosed embodiment and it is not intended to be a full, detailed description. A detailed description of all the aspects of the disclosed invention can be understood by reviewing the full specification, the drawing and the claims and the abstract, as a whole.
The present invention aims to remotely monitor the level of the saline solution in the saline bag/bottle and call the nurse/caretaker whenever the patient needs them.
In one aspect of the present invention, when the saline level is below the threshold level, the system will alert the caretaker/nurse through the central monitor and mobile phone. A mobile Application is developed and interfaced with Node-MCU to alert the caretaker about the status of the patients.
In one aspect of the present invention, the system is carried out by using Node-MCU for remotely monitoring the level of saline in the saline bottle of the patient through the central monitor and mobile app.
In another aspect of the present invention the implementation of Smart Assistance includes two hardware systems, (a) patient care system on the patient’s end (b) central monitoring system on the nurse’s station.

In another aspect of the present invention, patient care system includes a Load sensor, Nurse Call button and Stop button - load Sensor to identify the saline level in the saline bottle by analyzing its weight. The nurse call button does call the caretaker whenever the patient needs them. The stop button to turn off the LED light when the caretaker approaches the patient. This entire setup interfaced with the cloud server through Node-MCU which acts as a database for the patient.
In yet another aspect of the present inventions, then central monitoring system helps the caretakers to take rapid response for patients. This central monitor is also interfaced to the cloud server through Node-MCU, including LCD Display, LED Level Indicator and Nurse Call Indication. The LCDs provide the patient information. LED Level Indicator is to indicate the level of the saline solution. Nurse Call Indication is to indicate the caretaker that the patient needs them by using LED.
In yet another aspect of the present inventions, an innovative assistance system and a mobile application checks the weight of the saline solution continuously and stores the value of weight. The data of sensed weight wirelessly transferred to the parameters of the cloud server through the internet. The stored weight value is the input to the mobile application and the central monitor system through the internet the mobile application named Nurse Assistant.
BRIEF DESCRIPTION OF THE DIAGRAMS:
The manner in which the proposed system works is given a more particular description below, briefly summarized above, may be had by reference to the components, some of which is illustrated in the appended drawing It is to be noted; however, that the appended drawing illustrates only typical embodiments of this system and are therefore should not be considered limiting of its scope, for the system may admit to other equally effective embodiments.
Throughout the drawings, the same drawing reference numerals will be understood to refer to the same elements and features. The features and advantages of the present proposed system will become more apparent from the following detailed description a long with the accompanying figures, which forms a part of this application and in which:

FIG 1, depicts 2 hardware systems used in the smart assistant of the present invention. Namely, patient care system and central monitor system. Each system comprises of different buttons and parts.
REFERENCE NUMERALS:
Load sensor (100)
Nurse call button (101)
Stop button (102)
NODE MCU (103)
Cloud server (104)
Mobile application (105)
LCD (106) display
LED (107) indicator
Nurse call indicator (108)
FIG 2, illustrates the flow process of the Central Monitor System.
FIG 3, represents an innovative assistance system and a mobile application.
FIG 4, depicts the patient monitoring system setup, with its 3 parts and the saline bottle/bag.
FIG 5, depicts the central monitoring system setup with its internet connection and 4-digit 7-segment display.
FIG 6, represents the central monitor system with its LCD, LED displays and nurse call indications.
FIG 7, is an experimental circuit setup with its two hardware system, patient monitoring system and central monitoring system with its respective parts.
FIG 8, represents the level of the saline done in three colours like Green, Red, and Yellow in the mobile application called nurse assistant.
DETAILED DESCRIPTION:
The present invention aims to remotely monitor the level of the saline solution in the saline bag/bottle and call the nurse/caretaker whenever the patient needs them. When the saline level is below the threshold level, the system will alert the caretaker/nurse through the central monitor and mobile phone. Hence, it includes a nurse call system to call the caretaker/nurse whenever they need them. Mobile application (105) is developed and interfaced with Node MCU (103) to alert the caretaker about the status of the patients.
Fig 1, depicts 2 hardware systems used in the smart assistant of the present invention. Namely, patient care system and central monitor system. Each system comprises of different buttons and parts. Load sensor (100), nurse call button (101), stop button (102), NODE MCU (103), cloud server (104), mobile application (105), LCD (106) display, level indicator, nurse call indicator (108).
This system does carry out by using Node MCU (103). The Node Micro-Controller Unit is an open-source development board. It has built with an inexpensive System on-chip called (107) ESP8266. This microcontroller has on-board Wi-Fi connectivity which connects to the local internet.
Fig 3, represents an innovative assistance system and a mobile application (105). Smart assistance system along with mobile application (105) mainly based on the concepts of the Internet of Things (IoT), involved easing the process involved in the medical field focused on maintaining the saline level in the bottle and knows the personnel there about its real-time status of the level of the fluid in the bottle. It majorly has two key areas; one is the patient monitoring system, and the other is the central monitoring system. Smart Assistance System proposes Firebase, where the parameters will create moreover, the values are monitored in real-time and stored in the cloud parameters. A load cell is used instead of IR sensors to monitor the saline solution level in the saline bottle/bag. Further, a nurse call system does include calling the caretakers whenever the patient needs them. By implementation this system, patients can be monitor in real-time without the need for frequent visits by the caretaker/nurse.
Fig 4, depicts the patient care system setup, with its 3 parts and the saline bottle/bag. The Patient care system will be available near the patient and responsible for monitoring them. This system includes a Load sensor (100), Nurse call button (101) and Stop button (102) - load sensor (100) to identify the saline level in the saline bottle by analyzing its weight. The nurse call button (101) does call the caretaker whenever the patient needs them. The stop button (102) to turn off the LED (107) light when the caretaker approaches the patient. This entire setup interfaced with the cloud server (104) through Node mcu (103) which acts as a database for the patient.
The present invention uses a load sensor (100) interfaced with Node MCU (103) to monitor the level of saline solution in the saline bag/bottle, such that no changes need to the existing system, except to attach the load sensor (100) to the stand and to hang the saline bag/bottle in the load sensor (100) which will not practically use in any of the hospitals. A load sensor (100) is a type of force transducer used for the measurement of weight which converts the pressure into an electrical signal which as a combination of a load cell and HX711. The load cell measures the weight and the output will be in the form of electrical pulses.
Fig 5, depicts the central monitoring system setup with its internet connection and 4-digit 7-segment display. The central monitor monitors the patient status, which will place in the Caretakers control room. It helps the caretakers to take rapid response for patients. This central monitor is also interfaced to the cloud server (104) through Node MCU (103), including LCD (106) Display, LED (107) Level Indicator and Nurse call indication (108). The LCDs (106) sprovide the patient information. LED (107) Level Indicator is to indicate the level of the saline solution. Nurse call indication (108) is to indicate the caretaker that the patient needs them by using LED (107). It has a 4-digit 7-segment display which internally has TM1637 IC. It is used in the central monitor system to display the percentage level of the saline in the saline bag/bottle.
Fig 6, represents the central monitor system with its LCD (106), LED (107) displays and nurse call indication (108)s. It is placed in the Caretakers control room. It helps the caretakers to take rapid response for patients. This central monitor is also interfaced to the cloud server (104) through Node mcu (103), including LCD (106) Display, LED (107) Level Indicator and Nurse call indication (108). The LCD (106)s provide the patient information. LED (107) Level Indicator is to indicate the level of the saline solution. Nurse call indication (108) is to indicate the caretaker that the patient needs them by using LED (107). FIG 7, is an experimental circuit setup with its two-hardware system, patient monitoring system and central monitoring system with its respective parts.
FIG 8, represents the level of the saline done in three colours like Green, Red, and Yellow in the mobile application (105) called (107) nurse assistant. The stored weight value is the input to the mobile application (105) and the central monitor system through the internet—the mobile application (105) named Nurse Assistant. The level of the saline done in three colours like Green, Red, and Yellow. Green represents saline is in the safer stage. Yellow represents that the level is in the medium stage. Red represents that the saline bottle must replace or it is in a critical stage. Whenever the patient calls the caretaker, an on-screen notification is sent to the caretaker/nurse mobile phone and indicates in the mobile application (105). This real-time fetched data of patients makes the caretakers take precautionary measures and take necessary actions at the correct time.
In an embodiment the saline flow in the saline bottle can be controlled (107) remotely from the mobile application (105) and central monitor. The heart pulse of the patient can also monitor along with the level of saline in saline solution. The blood pressure monitoring system can also integrate with this system to monitor the pulse rate, blood pressure. Also, the flow control mechanism can be modified and used in other fields such as chemical mixing and all the mechanical devices used to measure and control with alternative solutions like advanced IC and sensor boards with PCB designs. Hence the operational cost can be lowered and also reduce human errors to a great extent.