Jiangning hospital DMR system solution

One 、 Industry background

Nanjing Jiangning hospital ( Jiangning Hospital Affiliated to Nanjing Medical University ) Founded in 1935 year , It's a comprehensive tertiary hospital . The hospital owns 38 A clinical specialty ,48 A clinical department ,7 A medical technology major ,15 Medical technology departments . Have 15 A municipal key medical specialty , Neurology, respectively 、 Respiratory department 、 Oncology Department 、 Digestive 、 General surgery 、 Urology Surgery 、 The orthopaedic 、 Thoracic Surgery 、 Internal Medicine-Cardiovascular Department 、 Nephrology 、 Endocrine Department 、 Department of critical medicine 、 Department of rehabilitation medicine 、 Department of Anesthesiology 、 Clinical Laboratory .

Two 、 Demand analysis

Based on the existing problems of communication in Jiangning Hospital ：

1、 There are many blind areas in the existing direct channel, which can not meet the communication needs within the hospital

2、 There is noise in the call of the simulator , Often disturbed

Beifeng communication is measured by hand on site , It is found that there are dead corners in some places of the hospital and normal communication is not possible , For example, from the middle of the first floor to 6 The weakest part of the signal on the first floor can hardly be directly connected . Especially the long curved corridor in the hospital , Signal coverage is weak , Almost no normal communication . Besides , Because there are more medical instruments in the hospital , High shielding , Seriously affect the communication in the hospital .

3、 ... and 、 Solution

According to the wireless communication requirements of Jiangning Hospital , Build a set of Beifeng DMR digital system , from 2 platform BF-TR7500 Relay station 、 It is composed of combining and shunting and antenna feeder system ：

1、 Combined with the structure of the building floors in the hospital , Reasonably arrange the antenna feeder system , Establish a perfect wireless coverage network to realize the full coverage of all outpatient medical technology buildings . The problem of hospital communication dead corner is solved by assuming the relay base station , At the same time, solve the problem of multiple floors of inpatient building 、 The problem that there is no direct connection between handsets , Establish the voice channel between the remote floors of the inpatient building , Maximize the number of concurrent voice channels .

2、 Adopt new digital technology , The system has high spectrum efficiency 、 Clear voice 、 Strong anti-interference ability 、 Good confidentiality 、 Rich data functions and other characteristics . It further solves the problem of unable to talk in many blind areas before , It facilitates the communication between medical staff and security personnel , The hospital's communication management system has been strengthened .

Four 、 Networking principle

According to the needs and difficulties of the hospital industry , Beifeng communication DMR The digital system is based on high reliable positioning performance , It not only meets the requirements of long-distance daily task communication in the hospital , It also meets the requirements of emergency command and dispatching . Provide convenience for hospital staff , Achieve the purpose of curing diseases and saving people or daily mobilization and command , It also ensures the safety of hospital personnel .

In the center of the area that needs to be covered ( Fire control room ) Place the turntable , By merging and branching 、 Trunk amplifier, antenna feeder system and other equipment , The receiving of the turntable in 、 Transmitting antennas are distributed in every corner of the pre coverage area . When the walkie talkie makes a call , No longer rely on the power of the walkie talkie to directly call another walkie talkie , Instead, call the receiving antenna nearest to the interphone , After receiving the call signal from the antenna, the transfer station , Control all transmitting antennas to automatically forward the call signal , such , No matter where the called walkie talkie is , Can receive the call signal .