Bluetooth technology is a communication protocol for personal wireless networks. It originated from an advanced short-range wireless communication technology jointly launched by Ericsson, IBM, Intel, Nokia, Toshiba and other companies in 1998. In February 1998, led by Ericsson, a special interest group (SpecialInterestGroup) was established jointly with Toshiba, IBM, Intel and Nokia to jointly launch Bluetooth radio access technology, which is to establish and use universal and advanced wireless interface technology on a global scale. standard. Thousands of companies have so far participated in supporting and developing Bluetooth technology and related products. The ultimate goal of Bluetooth technology is to establish a global unified wireless connection standard, so that various mobile, portable devices and fixed terminals produced by different manufacturers can be automatically connected by radio within a short distance to achieve interoperability and data sharing. The Bluetooth system generally consists of four functional units: an antenna unit, a link control (firmware) unit, a link management (software) unit, and a Bluetooth software (protocol stack) unit, as shown in FIG. With its unique and practical charm, Bluetooth technology has attracted a lot of attention since its inception. It is embedded in various portable devices through a 9mm*9mm microchip and Bluetooth wireless transceiver, and the transmission distance is 10 meters, replacing all digital devices. Wired interface on. For example, the connection between the computer, the host computer, the keyboard, the printer and the display via Bluetooth technology can eliminate the confusing connection line; the mobile phone application Bluetooth technology can separate the mobile phone and the earphone, and facilitate driving and business activities. It can be seen that Bluetooth technology can continue to expand the scope of use with the needs of people, and has increasingly entered various industries, and is also gradually introduced in medical equipment . With the continuous development of modern society, modern medical undertakings have also flourished. The emergence of hospital ward monitoring systems and medical consultation systems has made outstanding contributions to the development of modern medical services. However, the biggest drawback is that the cable on the patient not only causes great inconvenience to the patient's actions, but also has to interrupt the monitoring of the patient's condition or require human monitoring when the patient needs a large area of ​​activity. First, the application of Bluetooth technology in modern medical electronic equipment 1. Most of the applications that Bluetooth originally considered were used to replace wired connections. Medical equipment is basically an independent system in the hospital. Therefore, all kinds of equipments are equipped with their own peripheral systems such as computer systems and printers. The data lines are connected independently. Therefore, the status of the machine is read and the equipment is reconfigured. Sensor data, patient data, patient monitoring, safety access data, asset tracking, etc. are all independent systems for safety reasons. The most common phenomena, such as operating room, radiology department, can be seen everywhere, cable connections, staggered On the ground, once the instrument malfunctions, it takes a lot of effort for the doctor to check whether each interface is connected along the wire. It is very troublesome to organize the line, which wastes a lot of time, and the language is very valuable for saving the patient. In the case of each device with Bluetooth technology connection, the trouble of the medical device user is solved. 2. Some medical instruments, such as electroencephalograms such as EEG and electrocardiogram, receive electrical signals from the patient's body surface and transmit the bioelectrical signals to the medical device through the cable for analysis. In the meantime, because of the connection of the cable, the position and movement of the patient are limited, and the physical examination can only be performed in the lying position, so that the bioelectrical signal of the patient moving in a certain range in other postures and even in the state of motion cannot be known. 3. Some medical restricted areas, such as laminar flow wards, operating rooms, radiography rooms, radiotherapy rooms, rescue rooms, etc., are not suitable for all medical personnel to enter and exit, must have a strict isolation system, Bluetooth can play in these places Very useful, the doctor can make some inspections and treatments wireless remote control, reducing the probability of direct staff access, while not hindering the doctor's treatment and consultation work. The main mode of Bluetooth system application in the medical field is shown in Figure 2: Second, the realization conditions of Bluetooth in electronic medical equipment 1. Multi-machine communication must ensure reliable communication between the host and the selected slave, and the communication interface must have strong recognition capability. It is more susceptible to interference for Bluetooth multi-machine communication, so it requires less external interference. In addition, there is a need for a more reliable communication protocol. 2. Composition of the Bluetooth protocol: The Bluetooth protocol is an open short-range high-speed communication standard, which mainly includes the following four aspects: Bluetooth core protocol (BB, LMP, L2CAP, SDP), cable replacement protocol (RFCOMM), and telephone control. Protocol (TSCBinary, AT command set) and optional protocols (PPP, TCP/IP, DUP/IP, OBEX, WAP, ...). Depending on the application, the Bluetooth protocol can be flexibly configured and encouraged to utilize as many high-level protocols as possible to ensure convergence of existing network technologies with Bluetooth technology. Therefore, in addition to the Bluetooth core protocol is required, the other three aspects of the agreement depends on the specific needs of the application. 3. Requirements and implementation of physiological electrical signal transmission: Physiological electrical signals are electrical signals that are transformed into specific characterizations produced by organisms, tissues, organs, cells, etc. in life activities, reflecting specific life activity details. . Here mainly refers to Bluetooth data transmission for one-dimensional physiological telecommunications, such as: heart sound, electrocardiogram, brain electricity, myoelectricity, stomach electricity, and physiological parameters such as blood pressure, pulse, and breathing that are converted into electrical signals. Gauze Swabs 10X10,Premier Gauze Swabs,Vaseline Gauze Swab,Non Sterile Gauze Swabs Xinxiang Huaxi Sanitary Materials Co., Ltd. , https://www.huaximedical.com