On 2026年5月5日, Changzhou Sanheng Automation was granted the invention patent for ‘Mining Intrinsically Safe Wireless Belt Misalignment Sensor’. This patented technology focuses on intrinsic safety （Ex ib IIC T4 Ga） and low-power wireless deployment capabilities, directly aligning with procurement demand in mining EPC projects across the Middle East, Africa, and Southeast Asia for sensor equipment featuring wiring-free installation, long service life, and high explosion-proof ratings. Noteworthy niche areas include smart mining equipment exports, industrial wireless sensing system integration, and intrinsically safe certified hardware supply chains for emerging markets.

Event Overview

Changzhou Sanheng Automation filed the application in 2025年5月 and was officially granted the invention patent for the ‘Mining Intrinsically Safe Wireless Belt Misalignment Sensor’ by the China National Intellectual Property Administration on 2026年5月5日. The patent adopts an intrinsically safe battery and dual-mode charging architecture, clearly targeting the intrinsic safety and explosion-proof requirements for mining use, while emphasizing enhanced endurance under long-term outdoor deployment. Public information shows that its design is compatible with the Ex ib IIC T4 Ga rating, making it suitable for flammable and explosive environments such as coal mines and metal mines, and replacing traditional wired deployment through wireless methods.

Which Market Segments Will Be Affected

Direct Trading Enterprises

Export-oriented traders of sensors and mining automation equipment will face earlier-stage customer requirements for intrinsically safe certification compliance. The impact is mainly reflected in: end customers in the Middle East and Southeast Asia are gradually listing Ex ib IIC T4 Ga as a mandatory entry requirement in tender documents; similar products that have not completed the corresponding certification or lack verifiable intrinsically safe design may be excluded from project shortlists.

Processing and Manufacturing Enterprises

Manufacturers engaged in the production of mining sensor structural components, battery modules, or wireless communication modules need to assess whether their existing production lines can adapt to new processes such as intrinsically safe battery encapsulation, intrinsically safe circuit isolation, and dual-mode charging interfaces. The impact is mainly reflected in: existing production lines based on non-intrinsically safe designs may need additional explosion-proof testing and verification procedures; some OEM factories are already receiving joint development requests from downstream manufacturers regarding compatibility with Ex ib ratings.

Supply Chain Service Enterprises

Companies providing international explosion-proof certification agency services, localized EMC/ATEX/IECEx testing coordination, as well as cross-border technical document translation and archiving services, will face rising consultation volumes. The impact is mainly reflected in: customers are increasingly consulting on certification pathways for ‘intrinsically safe wireless’ products, with particular attention to progress on equivalent recognition of Ga class and T4 temperature group under the Saudi SASO, UAE ESMA, and Indonesia KAN systems.

What Key Points Should Relevant Enterprises or Practitioners Watch, and How Should They Respond at Present

Pay Attention to Changes in the Practical Details of Key Market Access Rules

What deserves more attention at present is the refined requirements for battery intrinsic safety verification methods in the newly issued “Technical Guide for Mining Wireless Sensor Equipment （Draft）” by Saudi SASO, rather than merely focusing on the standard number itself; it is also recommended to simultaneously compare the updated testing conditions in Appendix B of ESMA 2026 Announcement No. 3 regarding the coupling of wireless transmission power and intrinsic safety boundaries.

Differentiate Between Certification Types and the Actual Project Implementation Timeline

Obtaining a patent does not mean completing Ex ib IIC T4 Ga certification; based on current observations, among enterprises possessing this patented technology, there is still no public information showing completion of the full set of third-party intrinsic safety certification and issuance body reports. Relevant parties should carefully distinguish between ‘technical reserves’ and ‘compliant supply capability’ to avoid misinterpreting patent authorization as a passport to market access.

Review in Advance the Feasibility of Intrinsic Safety Adaptation for Existing Product Lines

For enterprises that already have mass production capability for wireless belt misalignment sensors, it is recommended to prioritize reviewing three key items: battery compartment structure, PCB intrinsic safety spacing, and RF leakage paths of wireless modules; analysis suggests that dual-mode charging （such as solar + inductive power harvesting） improves endurance, but also increases the complexity of intrinsic safety isolation design, requiring at least 3个月 of validation time to be reserved.

Strengthen the Level of Technical Coordination with EPC General Contractors

For mining projects in the Middle East and Southeast Asia, the current situation is better understood as follows: end customers are treating ‘wireless + intrinsic safety + maintenance-free’ as one of the technical scoring items. It is recommended to provide EPC general contractors with verifiable on-site low-power operation data （such as 7×24小时 continuous operation for 180天 without replacement records）, rather than only laboratory-based theoretical endurance parameters.

Editor’s Viewpoint / Industry Observation

Observably, this patent authorization marks that Chinese sensor manufacturers are extending from general-purpose wireless sensing toward specialized applications in highly constrained scenarios; it is more like a signal of upgraded technical compliance capability than the result of already formed large-scale export achievements. The industry needs to continue watching two points: first, whether a matching intrinsic safe battery cycle life report issued by a CNAS-accredited laboratory will appear later; second, whether leading international mining EPC contractors will include it in their qualified supplier lists—these two points are the key nodes for moving from ‘technically feasible’ to ‘commercially usable’.

Conclusion: this patent reflects the technological progress of domestic mining sensor equipment in the integration of intrinsic safety and wirelessization, but its current industry significance is more concentrated on strengthening the hardware compliance foundation for participation in international EPC projects, rather than immediately changing the existing market share landscape. A rational view should be: this is the completion of a necessary condition, not the achievement of a sufficient condition.

Information sources: patent publication announcement of the China National Intellectual Property Administration （authorization announcement number CNXXXXXXXB）; publicly disclosed patent information on the official website of Changzhou Sanheng Automation Co., Ltd.; latest technical guide texts on the official websites of SASO, ESMA, and KAN （as of 2026年5月）. Areas for continued observation: publication status of third-party intrinsic safety certification reports, and implementation information of the first overseas EPC project application.