In high-risk scenarios in petrochemical plants, multi-mode explosion-proof handheld terminals take 'off-grid without loss of connection' as the core, integrating intrinsically safe explosion-proof design, public private network + satellite multi-mode communication, centimeter-level positioning and AI intelligent sensing technology to build an integrated air, space and ground emergency command and remote monitoring system, achieving a safety upgrade from passive defense to active intelligence, and injecting key support for the digital transformation of high-risk industries.

Explosion-proof safety design

It has passed international explosion-proof certifications such as Ex ib IIC T4 Gb, ATEX Zone 1/21, and IECEx Zone 1. It adopts intrinsically safe circuit design (low voltage/low current) to eliminate sparks or thermal effects from the source. It is suitable for Class II Class C gas environments such as hydrogen and acetylene.

Industrial grade protection: IP68 dustproof and waterproof, resistant to extreme temperatures from -40°C to 70°C, impact resistance up to IK10 standard, suitable for harsh environments such as heavy rain, sand dust, and salt spray.

Multimode communications and positioning

Public and private network integration: It supports 5G/4G, Wi-Fi 6, Bluetooth 5.3, and DMR digital intercom, and combines Beidou satellite positioning (centimeter-level accuracy) and UWB ultra-wideband technology (centimeter-level indoor positioning) to achieve "air, space and ground integration" communication coverage.

Off-grid communication guarantee: Through Beidou short message and Tiantong satellite communications, two-way voice/data transmission is achieved in areas without public networks (such as remote oil fields and underground pipeline corridors) to ensure "no loss of connection even when off the grid."

RTK high-precision positioning: Centimeter-level positioning accuracy supports geological exploration, equipment mapping and other scenarios.

Intelligent sensing and edge computing

Integrated multi-gas sensors (methane, CO, H₂S, detection sensitivity reaches ppm level), temperature and humidity/vibration monitoring module, combined with AI edge computing chip, to achieve real-time early warning and predictive maintenance of equipment overheating, gas leakage and other risks (predict failures 14 days in advance).

Supports NFC/QR code scanning, 4K video transmission, and thermal imaging cameras to achieve paperless collection of inspection data and remote expert diagnosis.

Application scenarios and functions

On-site inspection and data collection

Inspection personnel automatically record valve status and pressure parameters through handheld terminals, and the data is uploaded to the DCS/MES system in seconds, increasing efficiency by 50% and reducing manual error rates by 85%.

Combined with the electronic fence function, it can track the trajectory of people/equipment in real time and provide early warning for illegal entry into high-risk areas.

Emergency command and linkage

Real-time monitoring: Through millisecond-level return transmission of multi-sensor data (gas concentration, equipment temperature, vibration spectrum), a three-dimensional safety perception network is built to support the linkage of AR real-life annotation and 3D maps.

Quick response: The one-button SOS function links the ventilation system to automatically adjust environmental parameters, increasing emergency command efficiency by more than 40%. ； Send a distress signal through Beidou short message, and combine it with RTK to locate the trapped location.

Government-enterprise collaboration: Interoperable with local government emergency management platforms to achieve cross-departmental coordinated rescue.

Remote monitoring and asset management

Pipeline pressure and flow data are collected in real time and transmitted back to the cloud through 5G/satellite links to support remote expert diagnosis and predictive maintenance.

Integrated RFID technology enables accurate positioning of materials and inventory counting, increasing efficiency by 300% and avoiding the risk of mixed storage of contraband items.

System architecture and advantages

Converged communication system: Integrate wired (optical fiber/network cable), wireless (4G/5G/Wi-Fi), and broadcast communications, support audio and video conferencing, short messages, GPS positioning, one-key calling, forced insertion/forced removal, transfer, monitoring and other functions, and are compatible with existing program-controlled switches, video surveillance platforms, and wireless intercom systems.

Data closed-loop management: Through the integration of edge computing and cloud platforms, the entire closed-loop process of data collection, analysis, early warning, and processing is realized, and customized algorithm analysis and multi-level alarm mechanisms (acoustic and visual/SMS/WeChat/system push) are supported.

Lightweight and durable: Using a carbon fiber composite shell, the weight is reduced by 30%, supports 72 hours of battery life, and the failure rate is reduced by 60%, adapting to long-term operation requirements.

Application of Dingjian explosion-proof handheld terminal in oil and gas exploration: Through the intelligent collection terminal and remote operation and maintenance cloud platform, the integration of online equipment monitoring, customer management, and operation and maintenance management is realized, the inspection efficiency is increased by 50%, and the equipment failure response time is shortened to within 10 minutes.

Offshore platforms and remote oil fields: Through Tiantong satellite communication and Beidou short messages, real-time contact with the land command center is ensured, and remote monitoring and emergency command are supported.

Through technology integration and innovative design, this solution solves the communication and positioning problems in the blind spots of the public network, becoming a key infrastructure for security upgrades in high-risk industries such as petrochemicals, gas, and oil fields, and provides revolutionary support for emergency command, remote monitoring, and inspection efficiency improvements.