Network Audio Broadcast Intercom Communication System Coal Mine Solution
I. OverviewAt present, with the rapid spread of computer network technology, information technology has moved toward coal mines. Many coal mines successively have industrial Ethernet that is stable and reliable and covers the mine. The continuous advancement of science and technology and the continuous acceleration of informatization in the construction of mines, underground industrial Ethernet will gradually be promoted and applied, providing a good network platform for the construction of coal mine underground audio broadcast intercom systems.
Our company combines the status quo and development direction of voice broadcasting, adopts digital technology, ARM+DSP architecture, advanced software programming technology, etc. We have developed an audio module suitable for mining intelligent voice broadcasting system, as well as network paging microphones, etc. Customers can use them. Conveniently compose IP digital mining intelligent network voice broadcasting system, which can realize functions such as safe broadcast, dispatch command, security monitoring, public voice, etc., and make a new generation of digital voice system, responding to the National Coal Mine Safety Supervision of the State Administration of Work Safety Bureau's Mine Broadcast Communication System in the Notice on Establishing and Perfecting the "Six Systems for Safe Hazard Avoidance in Coal Mines." The audio module has gained a good reputation among many coal mining automation companies in China due to factors such as high quality and low price and comprehensive functions. In addition to being able to carry out routine safety publicity, education, and play safety regulations, safety measures, and precautions in designated areas It can also customize the data shared by the security monitoring system. When there is a situation that the gas exceeds the limit and the fan does not work properly, it will automatically issue a safety warning in a specific area and direct the relevant personnel to evacuate or take necessary measures. If a safety monitoring system alarm is detected and a major safety incident occurs underground, the relevant emergency plan can be mobilized according to a pre-set procedure to direct the evacuation of the on-site personnel; the emergency plan voice material can also be manually invoked to be broadcast to designated areas and can be passed through the well. The network paging microphone directly directs the personnel to evacuate. Minimize the secondary impact of disaster relief.
Second, the system composition1. Inoue part: Network paging microphone (NM801-T), and digital audio broadcasting system software installed on the PC.
The network paging microphone can page any underground terminal, or perform manual broadcast and group multicast for all terminals downhole.
2. Downhole section: network audio transmission module (E702T), embedded network audio module EA1200T.
The network audio transmission module is a bare board module with 4 positioning holes. It reserves related RJ45 ports, line in and line out, speak out, mic and other related interfaces. It can be easily embedded into the customer's equipment. A finished product was taken for inspection. Get relevant certification. The embedded network audio module is a pure embedded module with pins. Apart from the E702T-related functions, this module has more IO ports and provides corresponding secondary development documents and technical support. More personalized network audio products, for the use of customers in batches, more cost-effective!
3, related software: Audio module setting management software (NAmanager), digital audio broadcasting system (DAS), intercom software
Setting software: It is an exemption-installed software. After it is opened directly, all terminal audio products can be searched, and then related parameters such as device name, user name and password, IP address, subnet mask, gateway, and first customer service can be set. , group number, talkback volume, intercom mode, etc. After setting, click OK to save
DAS software: It is convenient to add, edit, and delete various programs. The program can be broadcast, multicast, unicast, and finally can realize different music at different locations and at the same time.
Intercom software: Fill in the terminal's IP address, you can call the call directly to the terminal. Then perform full duplex talkback.
4, the topology results map:
1ã€Multicast function:
This product can realize the simultaneous transmission of multiple sets of programs. The number of new broadcast schemes is unlimited and each broadcast task independently adjusts the volume.
2, rich variety of audio sources:
Can be a microphone, microphone, DVD / VCD and other traditional audio equipment, can also be a computer, MP3 and other modern digital devices; when using a computer to play, you can play all the computer-supported digital voice files, in addition to support network player, mine leader The underground radio can speak in the office through a computer.
3, can be grouped features:
It can be manually performed by regional or logical group broadcasting, sub-regional broadcasting (such as office area, underground waiting room, canteen), so that it can be controlled separately, such as broadcasting the notice to the office area alone; it can also broadcast the whole mine. Supports up to 199 groups.
4, remote control function:
The audio output of a single audio module can be controlled by a computer with a friendly interface and easy operation.
5. Organic integration with safety monitoring and integrated automation system:
After customization, data sharing safety monitoring and comprehensive automation system data can be realized. When there is a situation that the gas exceeds the limit and the fan is not working properly, the system will automatically issue a safety warning in a specific area and direct relevant personnel to take necessary measures.
6, power amplifier off smart:
When the audio module detects an audio signal, an IO pin will go high to trigger the back amplifier to turn on. If the play or intercom is completed, the delay is 3 seconds (adjustable) becomes low, and the control relay Turn off the amplifier. Realize energy savings.
7, high-quality voice:
The professional voice chip design, unique mechanical and technological design make the sound loud and undistorted, which changed the fundamental problem of the poor sound quality of the underground mine telephones in coal mines in the past.
8, Ethernet transmission:
Each audio module only needs to allocate one private network IP, which facilitates the installation and expansion, avoids duplicate wiring and saves resources.
9. Leadership speech:
The system supports online speeches from leaders at all levels. Leaders do not need to go to a dedicated broadcast center. Instead, they can use the PC's own microphone or the web paging microphone provided by our company to page, broadcast, and talk through the office computer.
10, regular broadcast management:
According to the needs of broadcast content, DAS software can schedule programs such as hours, days, months, and days, create one or more scheduled broadcast tasks in chronological order, and can set priorities. When the time is up, the system will automatically perform all the specified tasks without manual operation, leaving it unattended.
Fourth, application occasionsThe system can be installed in roadways, waiting rooms, alongside transportation lines, work surfaces, etc. When an emergency occurs, it automatically calls for emergency plans, broadcasts emergencyly, and helps the miners withdraw in an emergency, as an evacuation command tool. You can also listen to music and public broadcasting when you are waiting or waiting for a ride.
Also installed in the belt along the line, substation, pump room or other workplaces, used for equipment start and stop warning, fault alarm, with the video camera in the dispatching room scheduling command, but also play a role in safety management.
When accessing the mine industrial Ethernet, through the integrated automation network platform transmission, after convergence can be achieved voice, video, data triplet, and achieve voice, video, data linkage.
V. Related Products1. Network paging microphone (NM801-T)
2, network audio transmission module (E702T)
3, embedded network audio module (EA1200T)