Dingjian intrinsically safe explosion-proof mobile phones, as the "safety intelligent hub" in the era of Industry 4.0, demonstrate core value in inspection, emergency and full-process digitization through intrinsically safe design and multi-scenario integration capabilities. The specific applications are as follows：

Technical characteristics and certifications

intrinsically safe design: It uses low-voltage/low-current circuits, explosion-proof lithium batteries and triple redundant cooling systems to control the surface temperature of the equipment below 85°C. It has passed international explosion-proof certifications such as Ex ib IIC T4 Gb (such as ATEX, IECEx), and can withstand 100% methane gas environment and avoid sparks or thermal effects from igniting explosive mixtures.

Industrial grade protection: IP68 dustproof and waterproof, resistant to extreme temperatures of -40℃~80℃, resistant to 1.8m drop impact, suitable for harsh environments such as chemical plants, oil and gas fields, and mines ； It integrates Beidou + GPS dual-mode positioning (centimeter-level accuracy), UWB ultra-wideband indoor positioning, multi-gas sensors (methane, carbon monoxide, hydrogen sulfide) and AI edge computing chips to support real-time data collection and local decision-making.

Inspection scene: From passive defense to active prevention

Equipment inspection and status monitoring: By scanning the QR code/RFID tag of the equipment, the valve status and pressure parameters are recorded in real time, and the data is uploaded to the ERP/MES system in seconds, reducing the manual error rate by 85%. ； Combined with the vibration frequency of millimeter-wave radar penetrating dust detection equipment, the AI algorithm predicts mechanical failures 48 hours in advance.

Environmental safety monitoring: Collect parameters such as temperature, humidity, and harmful gas concentration in real time, and automatically trigger audible and visual alarms when exceeding limits and activate emergency communication protocols. ； In the refining unit area, when the gas concentration exceeds 10 ppm, the valve will be automatically closed or the ventilation system will be activated.

Personnel positioning and trajectory tracking: Utilizing UWB or Beidou positioning technology, centimeter-level positioning of personnel in closed spaces such as underground mines and pipe corridors can be achieved, accident response time is shortened by 70%, and trajectories can be traced to an accuracy of 30 centimeters.

emergency scene: Global communications and intelligent command

Real-time communication guarantee: Supports 5G/4G full network, Wi-Fi 6, Bluetooth 5.3 and satellite communications, ensuring direct access to instructions even on deep-sea platforms or desert hinterlands without public network coverage ； Millisecond-level group response is achieved through DMR digital intercom. The 5G private network ensures real-time backhaul of high-definition video and supports 8-channel 4K video simultaneous backhaul to build a holographic digital twin system.

Emergency command and rescue: Integrated thermal imaging camera and gas sensor to monitor fire sources and trapped persons’ locations in real time ； When a flammable gas leak alarm is triggered, the encrypted voice channel is automatically switched, and the commander can remotely guide on-site personnel to put on positive pressure respirators and evacuate through video. ； In fire rescue, multi-department collaborative operations are supported, and emergency command efficiency is increased by three times.

Early warning and decision support: AI algorithm predicts mechanical failures and automatically triggers emergency plans ； In the transportation of hazardous chemicals, the vehicle location and cargo status (such as temperature and pressure) are monitored in real time to provide early warning of abnormal situations and trigger emergency responses.

Industrial IoT integration and digital transformation

Data collection and system integration: As an Internet of Things node, it collects equipment operating data in real time and uploads it to the security monitoring platform, supporting integration with enterprise ERP and MES systems to break data silos. ； In the oil and gas industry, the entire process of drilling, refining, storage and transportation is digitized, replacing traditional walkie-talkies or paper records, and reducing the risk of human errors.

Paperless operations and process optimization: Through electronic inspection, job ticket signing and approval, work order management and other functions, paperless operation process is realized, paper recording time is reduced, and real-time data sharing accelerates the decision-making process. ； In the LNG receiving station expansion project, the construction, supervision, and inspection parties shared the BIM model, and the design change confirmation cycle was shortened by 75%.

Improved efficiency and safety: Equipment inspection efficiency increased by 200%, and the annual safety accident rate dropped to 0.03 times/million working hours ； By reducing the risk of open flames/sparks, a chemical company's annual safety accident rate dropped by 30% after its introduction, and the incident rate caused by communication interruptions dropped by 87%.

Industry application value

Oil and gas: In drilling platforms and refining and chemical bases, it is used for equipment inspection, leakage monitoring, and operation ticket signing. It is combined with 5G private network to realize remote control of valve opening and closing to prevent personnel from entering dangerous areas.

Chemical and Pharmaceutical: In high-risk areas such as reactors and storage tank areas, the concentration of toxic gases is monitored in real time, an early warning is triggered and the valve is automatically closed or the ventilation system is started, in line with the "Code for Design of Electrical Equipment in Explosive Hazardous Environments" (GB 50058) and international standards.

Mining and Metallurgy: In coal mines with gas outbursts or metal mines with dust explosion risks, it is used for personnel positioning, ventilation monitoring, and emergency communications to improve rescue efficiency. ； Next to the high-temperature furnace, equipment fault diagnosis and remote guidance are supported.

fire rescue: At the scene of fire and explosion accidents, it is used for fire scene reconnaissance, vital signs monitoring, command and dispatch, to ensure the safety of rescuers, and to detect the source of fire and the location of trapped persons through thermal imaging cameras.

Through technological innovation and functional integration, Dingjian intrinsically safe explosion-proof mobile phones not only improve the safety and efficiency of high-risk operations, but also promote the intelligent transformation of the Industry 4.0 era, becoming a "sharp tool" for safe production and digital transformation.

Dingjian focuses on the R&D, production and sales of three-proof communication products such as single Beidou handheld terminals, Beidou short message terminals, RTK high-precision positioning terminals, single Beidou explosion-proof intercom terminals, explosion-proof mobile phones, anti-confidential mobile phones, 5G single Beidou law enforcement recorders, satellite communication phones, etc. It supports customized Hongmeng systems, secondary development, and provides one-stop communication equipment application solutions.