Actuator‑Sensor Interface (AS‑Interface) is een begrip binnen de industriële digitalisering en industriële communicatieprotocollen.
Definitie
Actuator-Sensor Interface (AS-Interface) is een eenvoudig en kosteneffectief industrieel netwerk voor de laagste niveau van fabrieksautomatisering. Het protocol verbindt sensoren en actuatoren rechtstreeks met een controller via een simpele tweedraads-verbinding die zowel voeding als communicatie verzorgt.
Kenmerken
- Two-wire system: Single cable voor both power en data communication
- Simple topology: Daisy-chain or tree structure without complex networking
- Cost-effective: Low-cost solution voor basic sensor/actuator connectivity
- Easy installation: Simple wiring with standard unshielded cables
- Fast communication: Cycle times as low as 5ms voor real-time control
- Robust protocol: Designed voor harsh industrial environments
- Hot-swappable: Devices can be replaced during operation
- Diagnostic capabilities: Built-in error detection en status monitoring
- Limited data: Optimized voor simple on/off en analog values
Toepassing
Manufacturing automation:
- Assembly lines: Position sensors, limit switches on conveyor systems
- Machine tools: Tool position sensors, coolant level monitors
- Robotics: End effector sensors, safety light curtains
- Material handling: Presence detection, weight sensors on conveyors
Safety systems:
- Emergency stops: Distributed e-stop buttons throughout facility
- Safety doors: Position switches on machine guards en access panels
- Light curtains: Safety beam systems voor personnel protection
- Two-hand controls: Operator safety controls requiring dual activation
Process monitoring:
- Temperature sensors: Simple thermal monitoring in production areas
- Pressure switches: Pneumatic system monitoring en control
- Flow sensors: Basic liquid en gas flow detection
- Level sensors: Tank en hopper level monitoring
Building systems:
- HVAC control: Temperature sensors, damper actuators
- Lighting control: Occupancy sensors, light level monitoring
- Access control: Door sensors, card readers
- Fire safety: Smoke detectors, alarm indicators
Metal industry applications:
- Welding stations: Gas flow sensors, electrode position monitoring
- Cutting systems: Torch height sensors, material presence detection
- Heat treatment: Furnace door position, temperature monitoring
- Quality control: Go/no-go gauging, part presence verification
Network integration:
- Fieldbus gateways: Connection to PROFIBUS, DeviceNet, Ethernet
- SCADA integration: Data collection voor higher-level monitoring
- HMI connectivity: Operator interface displays van AS-i status
- Maintenance systems: Diagnostic data voor predictive maintenance
Gerelateerde begrippen
Verwante termen:
- IO-Link - More advanced point-to-point communication protocol
- PROFIBUS - Higher-level fieldbus often integrated with AS-Interface
- DeviceNet - Alternative low-level industrial network protocol
- Industrial Ethernet - Higher-performance network technology
Verwante concepten:
- Fieldbus systems - Industrial communication category including AS-Interface
- Sensor integration - Device connectivity concepts supported by AS-Interface
- Industrial automation - Automation systems using AS-Interface
- O - I/O architecture concepts implemented by AS-Interface
Bronnen
- AS-Interface Association - Official organization promoting AS-Interface standard
- Siemens AS-Interface - Industrial communication components en gateways
- Phoenix Contact - AS-Interface masters, slaves en diagnostic tools
- Pepperl+Fuchs - AS-Interface sensors en interface modules
- ifm electronic - AS-Interface components en system solutions
- Turck - AS-Interface connectivity solutions en devices
- SICK - AS-Interface sensors voor safety en automation applications
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