Synergy Automatics · Industrial IoT
Access-Control Monitoring
Control and record access to shafts, electrical rooms, explosives areas and other restricted underground locations.
What this connected-mine application does
Control and record access to shafts, electrical rooms, explosives areas and other restricted underground locations.
The practical objective is not simply to collect more data. It is to establish a trustworthy measurement chain, detect abnormal conditions, preserve the relevant operating context and route information to the team that can act on it.
- Credential and identity
- Door, gate or turnstile status
- Authorisation by role and time
- Entry/exit transaction
- Forced, held-open or tailgate event
- Controller, lock and network health
| Primary field devices | Card, biometric or mobile credential reader; Turnstile, lock or gate controller; Door contact and request-to-exit; Local access panel; Central identity and event integration |
|---|---|
| Data update pattern | Event-driven alarms with periodic telemetry. Critical events should be timestamped and transmitted immediately where the communications design permits. |
| Connectivity options | Industrial Ethernet, fibre, Wi-Fi, leaky-feeder, LoRaWAN or private LTE/5G as site conditions permit. |
| Alarm and analytics | Alert on forced entry, held-open access point, invalid credential, controller tamper or repeated denied attempts. |
| Common integration | Common interfaces include dry contacts, 4–20 mA, Modbus RTU/TCP, OPC UA, EtherNet/IP, CAN/J1939, MQTT, SNMP or REST APIs where supported by the source equipment. |
| Data continuity | Timestamp at the edge, monitor signal quality and device health, and use store-and-forward buffering so short network outages do not create silent data gaps. |
| Environmental design | Use mine-suitable enclosures, protected cabling and glands, appropriate ingress/impact resistance, and certified equipment wherever the hazardous-area classification requires it. |
A five-layer implementation pattern
Measure
Approved sensors and machine interfaces capture the required physical or operating state.
Control locally
Existing PLCs, protection and safety systems retain their required local authority.
Acquire at edge
A rugged gateway timestamps, buffers, normalises and validates incoming data.
Transmit securely
Mine communications carry telemetry and alarms with health and quality monitoring.
Visualise and integrate
Dashboards, historians and APIs support response, maintenance and reporting.
Where the solution can be applied
- Mine portal and shaft bank
- Substation and control room
- Explosives or fuel-storage area
- Sealed, construction or restricted district
Potential benefits
- Controlled entry to hazardous areas
- Auditable personnel movement
- Faster credential revocation
- Integration with training and permit status
- Improved emergency occupancy information
Design details that determine success
- Emergency egress must remain available
- Use privacy and cybersecurity controls for identity data
- Define offline permissions during network loss
- Do not use access data as the sole emergency-location source
Alert on forced entry, held-open access point, invalid credential, controller tamper or repeated denied attempts. Dashboard alerts, remote notifications and analytics should complement—not replace—certified protection, local interlocks, emergency procedures, statutory inspections and competent decision-making.
Continue exploring the connected mine
Implementation questions
Can Access-Control Monitoring connect to existing PLC, SCADA or mine systems?
Usually, yes. The preferred approach is to reuse approved source data and add isolated field instrumentation only where required. The final interface depends on available protocols, network segregation, data ownership and the source equipment vendor.
Does the IoT layer replace local protection or safety controls?
No. Protection relays, safety PLCs, emergency stops, gas trips, fire systems and other approved local functions remain the primary safety and control layer. IoT adds visibility, history, notifications and decision support.
What happens when underground communications are interrupted?
Critical local functions continue independently. A suitable edge gateway buffers timestamped data, raises a communications-health alarm and forwards retained records after the connection returns.
How are sensors and alarm levels selected?
Selection starts with the mine risk assessment, required decision, environmental classification, measuring range, response time, maintainability and applicable rules. Alarm and trip levels must be approved for the specific site and jurisdiction.
Discuss Access-Control Monitoring
Discuss field instrumentation, edge connectivity, dashboards and integration with the Synergy Automatics team.
Engineering note: Instrument selection, hazardous-area certification, alarm limits, interlocks and network architecture must be validated against the mine risk assessment, applicable legislation, equipment approvals and site operating procedures.