Zigbee Wireless Technology Based On The Patient Monitoring System Research

With the quickening pace of development of science and technology, humanbeings have in the information technology age. As important, basic informationacquisition technology-wireless sensor technology, this time also quickly developed.The acquisition of information technology has sensors step by step from the pastsimplification of gradually to integration, miniaturization and diversifieddevelopment direction of the network, it will certainly bring mankind a revolution ininformation technology. And as with calculation, perception and the communicationof wireless sensor network (WSN, wireless sensor networks) combined sensortechnology, distributed information processing technology, the communicationtechnology and embedded computing technology, can real-time monitoring,perception and collecting the network coverage of the area and the environment ofobject information detection and treatment, and get a detailed and accurateinformation, transmitted to need the information to the user. For wireless sensornetwork (WSN) has great application value, so it is now under the most countries inthe world industrial and military and the attention of the academic field, and thetechnology is widely used in the military, the national security, industrial processcontrol, environmental monitoring and so on many domains. The sensor forcomprehensive technology, modern network science and technology, distributedinformation science and processing technology, wireless communication technologyand embedded computing technology of wireless sensor network, is the currentcomputer network a research focus.ZigBee is a cheap fixed, portable and mobile devices, it is the low complexity,low cost, low power consumption and low rate of wireless connection technology.Mainly used in short-range, data rate high between various kinds of electronicequipment. ZigBee than Bluetooth, and wireless LAN802.11has the following advantages.（1）Save electricity: Because working time was short, sending and receivinginformation power consumption is low and adopt a sleep mode,can ensure that2section5, the battery for6months to2years time.（2）reliable: The collision avoid mechanism, reserved for special time shouldbe fixed bandwidth communications business,（3）Low cost: ZigBee agreement when use are exempt from patent fees, andterminal equipment low cost, initial cost about six dollars, estimate soon will drop tobetween$1.5and$2.5.（4）Delay short: According to delay sensitive issue in particular theoptimization, equipment for30typical values search delay ms, dormancy activationtime delay typical values is15ms.（5）Network capacity: ZigBee network in network nodes can be as high as65000number, and Bluetooth only eight, Wi-Fi a maximum50.（6）security: The128bit AES encryption algorithm, provide the data integritychecking and appreciation function. Each application security property can beflexible determine, in the low noise suppressor is environment, has the very stronganti-interference ability.Can see from this, ZigBee wireless data transmission is a revolutionarytechnology, in low power consumption, low cost and networking skills areincomparable advantage. Because wireless sensor network node itself requirements,the energy conservation, the dense easy routing technology characteristic, USESZigBee wireless sensor node technique of wireless communication is possible.Based on these advantages, this paper puts forward a kind of using ZigBeetechnology to realize the patient medical ward of the wireless equipment theapplication of the system, so that those who in the hospital patients in hospital to freeactivities under the condition of measurement to some physiological indexes (suchas this chapter for patients mentioned the temperature parameters), and at the sametime, to these parameters through the wireless network technology, real-time sent tomedical care center medical personnel, a timely data analysis, and in case it’snecessary to get the doctor’s remote medical instruction. The system is characteristicof the way down the monitoring equipment and medical sensor of connectionsbetween, made by the guardian in the free state of activities can be underphysiological indexes of the test. This system design for patients, it was very good, itmakes patients were able to have more freedom in space at the same time, and completed the temperature parameters test, do not only give the patients more freetime, and the most important is, reduce the patients great psychological pressure. Butalso improves hospital improves hospital modernization information managementand the efficiency of the medical staff.Judging from the current situation, the patient’s medical monitoring researchand development of wireless systems are quickly. In our country, has many researchunits and the enterprise is to the wireless medical care system, and has made theholter, monitoring system and real time BP machine and so on monitoring equipmentetc. And the hospital patients to use medical monitoring instrument basically areused in cable, this equipment so that patients can only in the fixed position ofphysiological indexes test, do not only greatly limits the scope of the activities of thepatients, and to the patient in the psychological cause a lot of pressure. In view of theabove this kind of situation, this paper proposes using technology to achieve hospitalpatient care ZigBee wireless system of equipment design, so that patients can freeactivities in the physiological indexes test, and through the wireless sensor real-timewill be sent to the hospital physiological coefficient monitoring center. The text wefirst designed a wireless monitoring system of the general structure of the framework,then it introduces ZigBee coordinator of the hardware structure and module RFDnode hardware structure module, finally completed the wireless monitoring systemsoftware parts design.