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Program-controlled explosion-proof loudspeaker telephone communication system without host

Program-controlled explosion-proof loudspeaker telephone communication system without host

At present, the communication of my country's petrochemical sector basically adopts the communication method introduced simultaneously with equipment from abroad. Wired communication occupies a major position, including common line telephone communication such as program-controlled exchange communication. The program-controlled exchange has complete functions and confidentiality, but it has no sound amplification function, which is difficult to play its role in noisy places. At the same time, the system is complicated to install and the cost is high. The common line telephone is easy to install and easy to use. It has been widely used in a small working range. Its disadvantage is that it has simple functions and cannot contact the designated phone, but can only make a full call. Can the above functions be integrated. The advantages of concentrating various communication methods are issues that people are generally concerned about in communications in the petrochemical industry.

Therefore, the program-controlled non-host explosion-proof amplifier telephone communication system came into being on this basis. A single phone can be connected through a multi-core cable to communicate. The dual audio communication method is adopted, with low bit error rate, high communication speed and low cost. The system has the functions of dialing, selective calling, group calling, all calling, etc. It shows its superiority especially for places with high noise such as machinery and electricity, and can basically replace most of the communication devices currently used by petrochemical enterprises.

The function of the program-controlled non-host explosion-proof amplifier telephone communication system is realized by two parts: hardware circuit and software circuit. The hardware circuit is mainly used to detect and shape the rope state. Improve the anti-interference ability of the system, and also adjust the system parameters. In order to improve the load capacity, increase the input impedance and so on.

The software circuit of the program-controlled non-host explosion-proof loudspeaker telephone communication system can analyze and judge the rope circuit and other control states to issue various commands. Since the phone is always in working condition and there are 3 ropes, the single-chip microcomputer is used to detect these states at the same time, and different operations are performed according to the detection results. Therefore, the single-chip microcomputer is required to work efficiently, and the detection, analysis and execution of various states The operation must be accurate and reliable. And has a certain anti-interference ability.

The use of a computer to realize the communication system of a program-controlled explosion-proof loudspeaker phone without a host is of special significance to the petrochemical sector where the department is scattered, the system is complex, the labor is heavy, and there are various disaster threats. Its advantages are as follows:

1. With 3 rope paths, 3 interphones can work at the same time without affecting each other.

2. It has functions such as busy tone and dialing.

3. Adopt dual audio frequency communication mode, low error rate, fast communication speed and strong reliability.

4. It has the function of number selection, that is, each phone can choose other phones to talk to it.

5. With amplifying function, the speaker connected to the selected phone can be automatically activated to amplify the voice signal from the calling phone.

6. No host is needed, just connect each phone in parallel through a multi-core cable to form a program-controlled amplifying intercom system, which is easy to install.

7. With group call and all call functions. By setting the area code and general call code, when the caller presses the group call number, all phones in the area will ring. When the call number is pressed, all phones in the system will ring, and the amplifying device will be activated.

Tag: explosion-proof loudspeaker telephone, loudspeaker telephone, explosion-proof telephone

Details

  • Lanjiang Residential District, Yuyao, Ningbo, Zhejiang, China
  • Eric

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