Family-oriented remote health monitoring medical system design

1 introduction of telemedicine care refers to the remote network through communication of physiological and medical signal transmission to the monitoring Center for analysis, and gives diagnosis views of a technical means.

He is with the computer technology, the development of modern communication technologies and development. Computer technology and the development of modern communications for remote medical services both new opportunities and makes it available through the application of computer technology and modern communication and achieve personal and hospital, the hospital and the Hospital of medical information of remote transmission and monitoring, remote consultation, medical first aid, remote medical education and communication, etc. With family-oriented remote medical health surveillance is equipped with advanced appropriate medical equipment conditions, millions of households and health care institutions, medical patients into the family, at home in the implementation of monitoring, diagnosis, treatment, rehabilitation and health all-in a new telemedicine mode. Remote patient monitoring has become increasingly a matter of great concern. Its rapid development has a strong background of social reality:

(1) as the environment pollution intensifies, people, lifestyle changes, work pressure, threats to human health disorders also appeared in the new situation.

Malignant diseases and chronic diseases such as cardiovascular disease, cerebrovascular disease and malignant neoplastic has become a threat to human health, the number one killer.

(2) along with the improvement of living standards, health conditions improve, increasing human life extension, ageing trend is clear.

(3) the development of modern communication technology, especially in mobile communication technology and Internet technology is developing rapidly as a remote monitoring provides strong technical support.

This new telemedicine model is a very important technology, and has many advantages.

First he greatly facilitates the majority of patients, especially some special populations, such as: mobility handicapped patients and patients suffering from chronic elderly need to periodically check for pregnant women and children, need to review the long term illness patients with chronic diseases (e.g. diabetes, heart disease), away from the hospital transportation of patients. Secondly this new telemedicine model also effectively reduces the workload of the hospital, outpatient department can concentrate on critical intensive and difficult diseases, effectively configure and use limited medical resources, as the pace of life in urban tension of time providing a family health care anywhere, anytime. People carry wireless sensing devices can move freely, in a familiar environment time monitoring their physiological parameters without having to go to the hospital. He not only to secondary treatment, the patients ' condition suddenly deteriorated to the police. Medical staff can remotely monitor Center observation of the patient's health status and provide real-time diagnosis and recommendations, or long-term care to patients. On the other hand, to the remote monitoring healthy population, can also be found on the early symptoms of disease, so as to achieve health and prevent disease.

This design is a new network-monitoring devices and systems, based on wireless sensor network technology, the sensor acquisition parameters of human health.

These analog signal processing circuits through front to enter the digital signal microcontroller, through wireless data transmission and computer universal serial bus interface into the PC, the Internet is sent to the remote monitoring Center for professional medical staff provides a variety of important changes in physiological parameters. And then by its statistical observation data, provide the necessary consulting services, implementation of telemedicine. Aim is to use high-frequency wireless multi-channel data transmission, transmission of medical sensor and monitoring and control instruments for information between the monitoring equipment, reduce and medical sensor, allows the guardian to have more free space.

2 system structure

Family-oriented remote health monitoring medical system is mainly composed by 2: remote sensing system for medical equipment and communications delivery system.

Remote sensing system of medical devices is collecting information on the user's physical state, as networked home appliances for physiological monitoring, physical therapy, remote monitoring system must be stable, reliable, a certain post function, simple operation. From the patient's safety perspective, the use of proven, reliable technology, and as far as possible and ready-to-system compatibility and sharing data and, if required, be extended. And communication technologies for the implementation of telemedicine to provide strong technical support, depending on the application of telemedicine in the transfer of information and real-time performance requirements, you can use instead of communication technology. This article was previously published under family-oriented health care system, a wireless sensor network data transfer to a variety of monitoring devices and computers and remote trunk communication network of the primary connection method. And cable transmission compared to his advantage is:

(1) has sufficient speed to meet the transfer of data between devices;

(2) have a very good scalability and system equipment to increase or decrease will not affect other equipment in use;

(3) has a good adaptability, portability and mobility that are not subject to the constraints of physical environment.

This article is designed for monitoring system by monitoring base station and sensor nodes form a miniature monitoring network; sensor node on the consumer's life indicators data acquisition via wireless communication method to send data to the monitoring station, and from the base station transmit data to the connected PC through the Internet network can transfer data to the remote medical care center, by professional medical personnel statistical observation data, provide the necessary consulting services, implementation of telemedicine.

Users also can pass personal data to the PC for the acquisition of a preliminary analysis, and through computer given a preliminary judgment to take emergency measures.

Medical biological sensor nodes can set different needs, so the system has the flexibility and extensibility. At the same time, the system received Internet network, to form larger community health care network, hospital networks and the whole city and the nation's health care network. Figure 1-oriented system map.

3 monitoring sensor nodes and the monitoring base station design

P > sensor node used for measuring physiological parameters, data via wireless sensor network routing to the base station. The network of the required sensor nodes can be expanded as required. Figure 2 is a sensor node block diagram for node sortable by sensors, signal conditioning circuits, processors, wireless communications module has four main parts. Which wireless communication module is the key to achieving wireless monitor.

Base station unit can capture and display the test data, and to make the exception to the police.

If necessary, data will automatically be sent to the remote monitoring center, seek medical advice and help. Therefore the system of monitoring base station equipment is designed as a portable device, while monitoring base station equipment and systems for multiple sensor node to communicate with complete data acquisition and display functions. In the course of using, monitoring base station equipment through wireless channel to sensor node sends control command to start sensor nodes, sensor node receives a command after the corresponding data collection actions collecting human physiological indicators after the end of the collection of data through wireless communication by returning the data to the monitoring station, by monitoring base station for further display, storage, and so on. The base station's main components include user interface module, wireless communications module, alarm module and data transmission module. And remote monitoring center of communication can depending on your application needs, choose the network construction. Figure 3 diagram of the base station.

Wireless communication module mainly completed and sensor data interaction between nodes.

Base station through the serial port, USB and network adapter to access the local computer, and then transferred via the Internet to the remote monitoring center. Monitoring base station equipment in normal working state use the battery to supply power, therefore during the design process with particular attention to the low-power management and control. At the moment is not working, the system enters the low power consumption and hibernation to save energy.

4 user self-diagnostics system design

In this system, the PC is not only a responsibility for the network server and client login and doctor in real time communication tool.

He also serves as a very important task, namely to provide a custom diagnostic information to the database and to achieve self diagnosis function.

Diagnostic system's main function is to put the sensor acquisition to body temperature, pulse, blood pressure, and other data sent to the hospital data before a preliminary analysis.

In the end a set of signal processing analysis and calculated corresponding human information data, data on the human judgement whether data is sent out, and user-end diagnostic software also provides a similar role with expert system for diagnosis of white, available to the user reference. Figure 4 is a self-diagnostic system flowchart.

5 conclusion

Remote monitoring using sensor technology and modern communications technology to the patient's care from hospital to communication network reachable anywhere, enabling patients and clinics, clinics and hospitals or medical information transfer between.

Remote monitoring provides a way to be custodians of physiological parameters for continuous monitoring of remote object physiological functions of method, he shortened the doctor and the distance between the patients, doctors can these distant from the physiological information for patients and provide timely medical services, tele-monitoring system can not only improve the quality of life of elderly people, and able to capture the elderly onset aura, combined with important physiological parameters for remote monitoring, you can increase the level of home care in the elderly. This is access to a high standard of medical services and emergency first aid support. Remote monitoring system which conforms to the information society development and people's health care needs of the production and development. As information technology continues to develop, the form will be more diverse, wireless, mobile and sensor technology integration and miniaturization wireless smart sensor network is bound to a remote monitoring system development brings new breakthroughs.