DMR system solution of Kaiyuan MINGTING hotel of Fengqiao University

One 、 Industry background

Third, Shaoxing Fengqiao college is located in “ Fengqiao experience ” Birthplace: Fengqiao town , The total investment 7.5 One hundred million yuan , Covering an area of about 310 mu , The building area is about 6.5 Thousands of square meters . The total construction area of the teaching and scientific research area is about 2.7 Thousands of square meters , You Liji building 、 Mingde building 、 Zhishan building 、 Zhengxin building 、 Cultural Center 、 Libraries and landmarks ―― Xiusong lecture hall consists of , Can meet the annual training of about 300 shift 、1.5 Training needs of 10000 person times .

Two 、 Demand analysis

Based on the existing problems of Kaiyuan MINGTING hotel of Fengqiao University ：

(1) The address of the Party school cannot communicate with the basement of the hotel ;

(2) The communication between the fire control room and the stadium runway is not clear occasionally ;

(3) The basement of the Party school meeting site cannot be stably interconnected with the gate of the hotel .

Beifeng communication further considers , In all kinds of noise 、 In the increasingly serious communication environment of radio interference , How to solve the instability of long-distance communication signal 、 The wired telephone is inconvenient to carry 、 Poor confidentiality and other issues , Urgent need to provide security for the areas inside and outside the hotel 、 Work 、 Train and other personnel to build a communication management system with flexible scheduling , People in the implementation area can at any time 、 Stable call demand at any place .

3、 ... and 、 Solution

The construction area of the reconstruction project and the area of the outdoor park are large , Scientific research area and landmark buildings are scattered , The area of single layer is large , To achieve the desired call effect , We should choose products with higher cost performance . According to the communication command requirements of Kaiyuan MINGTING hotel of Fengqiao University , Build a set of Beifeng DMR digital system , from 2 set BF-TR7500 Relay station 、 Merge and divide 、 Trunk amplifier and antenna feeder system ：

1、 The whole system realizes security 、 Procter & Gamble 、 The front desk 、 Independent communication between leaders does not affect each other . The scheme covers all indoor and outdoor areas of the hotel , Through this system, an overall business communication platform can be formed .

2、 Realize that the fire control room calls the Party school meeting address 、 The fire control room calls the stadium runway 、 The entrance of the hotel calls the basement of the meeting site of the Party School 、 The address of the Party school is called to the basement of the hotel, and the voice is clear without noise , Meet the requirements of covering the whole college above ground and underground . The system can greatly save communication expenses for users , Effectively improve work efficiency , Improve scheduling management , Really realize one investment , The purpose of benefiting for life .

Four 、 Functional applications

1. All walkie talkies , The fixed station can be divided into multiple groups for communication , And a special senior management team can be set up ( Or leading group ) Speak and monitor the work of relevant personnel .

2. Internal self talk of each group , Mutual interference .

3. Senior management group ( Or leading group ) Calls have priority , Even when all channels are busy , You can also forcibly remove other groups that are talking , Ensure that the communication group is unblocked .

5、 ... and 、 Networking principle

Interphone stand-alone communication is through the transmission power of the interphone , Call another walkie talkie directly . Due to the low power of the walkie talkie ( It's usually 2-4W), When a single machine communicates, the communication distance is limited . To solve the above problems ： 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 .