石化设施需要能够支持日常协调、快速应急广播和可靠报警联动的通信系统。MYT无线应急广播和报警系统将DMR/PDT数字无线电网络、广播控制、报警接口以及集中式运维监控整合到一个灵活的架构中。.
Communication Challenges in Petrochemical Environments
Large refineries, chemical plants, storage areas and transfer facilities often combine wide coverage requirements with demanding operating conditions. A communication system must support daily dispatch while remaining useful when an emergency requires immediate instructions across selected zones or the entire site.
Traditional wired public-address and intercom systems can require extensive cabling and complex installation. Cable damage caused by fire, earthquakes, construction incidents or other site events can interrupt service and make fault location difficult. Expanding a wired system may also require additional construction work and downtime.
For these environments, a wireless architecture can provide a more flexible path to deployment, expansion and centralized monitoring.
One System for Daily Coordination and Emergency Response
The MYT wireless emergency broadcast and alarm system is designed around three operating needs:
- Routine command and dispatch for day-to-day coordination.
- Emergency broadcasting for rapid voice communication with selected groups, zones or the entire site.
- Alarm linkage for publishing alarm messages when connected fire alarm or other alarm systems generate an event.
The system uses DMR/PDT digital radio communication for wireless networking. Depending on the site plan, the solution can be configured with combinations of wireless broadcast controllers, wireless speakers, wired constant-voltage speakers, wireless broadcast loudspeakers and supporting control equipment.
Flexible System Architecture
The presentation describes four typical system configurations:
- Wireless broadcast controller with wireless speakers
- Wireless broadcast controller with wired constant-voltage speakers
- Wireless broadcast loudspeaker with wireless speakers
- Wireless broadcast loudspeaker with wired constant-voltage speakers
This modular approach allows the communication design to follow the facility layout, coverage plan, hazardous-area requirements and existing audio infrastructure.
Core Functions for Critical Operations
The system supports a broad set of operational functions, including:
- Point-to-point, group/zone and all-call communication
- One-touch emergency broadcast, alarm broadcast and scheduled broadcast
- Linkage with fire alarm systems for automatic alarm broadcasting
- Interoperable calling and talkback with wireless radios
- Broadcast priority management, with emergency broadcast taking priority over alarm broadcast, scheduled broadcast and routine calls
- Local recording with storage, search and playback functions
- Centralized, real-time operation and maintenance monitoring
- Device status information, including device name, ID, group/zone number, network status, operating status and installation location
- Speaker fault detection and speaker output-volume display
- Historical record queries and device map display
- Highlighted alarms for offline equipment and speaker faults
- Remote configuration of ID numbers, group/zone numbers, installation locations and speaker volume
- Automatic speaker-volume adjustment according to the noise level at the installation site
The system supports up to 99 groups and 99 zones, with no stated limit on the number of networked terminals in the supplied presentation.
Centralized Control and Maintenance Visibility
The main control console integrates command control and operation and maintenance software on a 15.6-inch, 1920 × 1080p touch-screen computer. The console can be used for emergency broadcasts, zone calls, all-call broadcasts, scheduled broadcasts, local recording and centralized equipment-status monitoring.
A device map provides a visual overview of equipment locations and operating status. This can help maintenance teams identify offline equipment, speaker faults and other conditions that require attention without relying only on manual site inspection.
Equipment Options for Different Site Requirements
The solution includes equipment options for control rooms, hazardous areas, non-hazardous areas and different speaker installation positions.
CHY-7GBEx Explosion-Protected Wireless Broadcast Controller
The presentation lists the following characteristics for the explosion-protected controller:
- Explosion-protection markings: Ex db ia IIC T6 Gb and Ex ia tb IIIC T80°C Db
- IP68 protection rating and WF2 corrosion protection rating
- 304 stainless-steel explosion-protected enclosure
- 400–470 MHz frequency range, subject to approval by the local radio authority
- AC100–240 V, 150 W power supply
- Operating temperature: −40°C to +60°C
- Support for two 50 W / 8 Ω speakers with linked indicator flashing during broadcasts
- Beidou positioning module
- Remote parameter configuration and equipment-status reporting
CHY-7GB Non-Explosion-Protected Wireless Broadcast Controller
The non-explosion-protected controller is listed with IP66 protection, WF2 corrosion protection, a 304 stainless-steel enclosure and a 5 W typical RF output. It supports the same DMR/PDT wireless networking approach, emergency and scheduled broadcasts, remote configuration and speaker-status reporting, with an operating temperature range of −40°C to +60°C.
CHY-7BJ-32 Alarm Gateway
The alarm gateway provides an interface between external alarm systems and the wireless broadcast network. The presentation lists:
- 32 dry-contact alarm inputs
- 32 dry-contact alarm outputs
- 32 stored alarm audio sources corresponding to the 32 input channels
- Automatic or manual alarm modes
- Alarm priority from level 1 to level 32
- Support for up to 32 linked zones per set; multiple sets can be configured when more than 32 zones are required
- 19-inch, 3U rack-mount installation
Explosion-Protected and General-Purpose Speakers
The equipment range includes explosion-protected wireless loudspeakers, non-explosion-protected wireless loudspeakers, wall-mounted wireless speakers, ceiling-mounted wireless speakers, explosion-protected horn speakers and constant-voltage speakers for non-explosion-protected areas.
The presentation lists options such as IP66/IP68 protection, WF2 corrosion protection, 304 stainless-steel or aluminum-alloy enclosures, 25 W / 30 W / 50 W power options for selected explosion-protected horn speakers, and 70–120 V constant-voltage speaker configurations for indoor wall or ceiling installation.
Why Wireless Can Be an Advantage Over a Traditional Wired System
Reduced Dependence on Physical Cabling
A wireless private network can reduce the amount of dedicated audio or signal cable required across a large facility. This can simplify deployment in complex areas and reduce the impact of cable damage during certain site incidents.
Easier Integration with Radio Dispatch
The MYT system is designed to communicate with wireless radios, allowing routine radio dispatch and emergency broadcasting to share a coordinated communication network. This can help reduce duplicated infrastructure and simplify field operation.
Flexible Expansion and Maintenance
New terminals can be added according to the coverage plan. The system also supports remote configuration, equipment-status reporting, device-map visibility and speaker fault monitoring, helping maintenance teams work from a centralized view.
Support for Safety-Oriented Priorities
Emergency broadcasts can be configured with higher priority than alarm broadcasts, scheduled broadcasts and routine calls. Alarm gateway integration can also help connect external alarm events with predefined broadcast audio and linked zones.
Planning Considerations Before Deployment
Every petrochemical facility has different zoning, radio-frequency, coverage, power, environmental and integration requirements. Before selecting equipment and finalizing a system design, project teams should confirm:
- Facility layout, process areas, storage areas and emergency assembly points
- Explosion-protection and ingress-protection requirements for each installation location
- Radio-frequency approval and local regulatory requirements
- Required coverage, group/zone structure and call priorities
- Interfaces with fire alarm and other emergency systems
- Speaker type, installation method, power and acoustic coverage
- Control-room, maintenance and recording requirements
- Backup power, network resilience and commissioning procedures
The frequency range and other technical values stated above are based on the supplied MYT presentation. Actual project parameters should be confirmed against the approved site design, applicable regulations and equipment configuration.
结论
The MYT wireless emergency broadcast and alarm system brings together digital radio networking, emergency broadcasting, alarm linkage, field communication and centralized maintenance visibility for petrochemical and other critical industrial environments.
By combining flexible wireless deployment with explosion-protected and general-purpose equipment options, the solution is designed to support routine operations while providing a structured communication path for emergency response. For facilities evaluating a new system or planning a migration from a traditional wired architecture, the key first step is to map operational zones, alarm interfaces and environmental requirements into a practical communication design.
Looking for a communication architecture for your industrial site? Contact MYT to discuss your coverage, zoning and integration requirements.