Topology diagram of prison video surveillance linkage alarm system
The Shenan prison video surveillance linkage alarm system is mainly divided into 6 parts.
1.Platform Shenan provides its own voice card and platform system software, as well as peripheral equipment such as the alarm center server and display. The platform can set up a client. Any sub-tower signal or the total tower signal can be connected to the platform through the wired in the prison. The platform can identify which main tower or which sub- tower and which person sent the signal, and in what area the alarm occurred And the loudspeaker driving the main tower or sub tower reads out this information.
Terminal Each police officer is equipped with a wireless high-power transmitter. As soon as a police officer sends out a help signal, the sub-transmission tower transmits the signal to the total tower, and the total tower siren will sound.
The wireless high-power transmitter defaults to single-key transmission, which means that pressing an arbitrary key indicates an area of alarm. Another way of transmitting the alarm is to press the number + the transmit key to transmit.
3.Total transmission tower SA-1168-T3 This is the core of the system. All signals are received through this tower. There is only one total tower, which has nothing to do with the size of the prison. Depending on the size of the prison, one prison area is usually equipped with one or even several sub-transmission towers to cover the blind area or send broadcast alerts. That is, a large monitoring area is usually installed with multiple sub-transmission towers, and only one main transmission tower is installed; a small monitoring area is generally installed with one main transmission tower to cover all areas.
The total transmission tower is built at the highest or higher end of the monitoring area. It is fixed on the building, and all signals are transmitted to the server of the prison management general platform through it. One to four loudspeakers should be installed on the total transmission tower to broadcast the alarm.
4.Sub launch tower SA-1168-ZT3
In order to cover the blind areas that the total transmission tower cannot cover, or to broadcast the needs of the police, sub-transmission towers are established. The sub-towers do not communicate with each other, but only communicate with the main tower.
Sub-towers are built on taller buildings in each of the smaller sections. The sub-transmission tower sometimes needs to be connected with a large horn, and sometimes it does not ring. Only the siren and the large horn of the main transmission tower sound. Therefore, the function principle of the main transmission tower and the sub-transmission tower is actually the same. It's just that the communication mode and manufacturing cost are different.
The sub tower sometimes needs a network cable to connect to the platform. The platform drives the big tower horn to tweet. Sometimes the signal can be sent directly to the tower through wireless. It can be called by itself or not.
5. The prison area and the prison area are connected through the prison's internal network The equipment used in this transmission method is the module system SA-1168-N18. The system module is built into the main control box of the transmission tower.
6, tweeter It is fixed on the main / sub launch tower. Each tower is installed with 1-4. If it is installed with 4, it is in 4 directions. Generally, one is enough. Each power distribution amplifier can hang 1-4 loudspeakers, and one power amplifier per tower is enough to match the relevant power supply.
There must be a large horn on the main tower, but the sub tower does not necessarily have a large horn. This depends on whether the sub tower functions as a relay or functions similar to the main tower.
At the time of the alarm, the large horn on the main transmission tower sounded for 5 seconds each time, and then followed by a recording: "** Area Police Officer *** Alarm", followed by another 5 seconds, and then a recording: "** Area Police ***Call the police".
Special Note: It is safe to install at least 2 to 5 transmitting towers in a large monitoring area. The launch tower has an open launch radius of about 2 kilometers.