Large-Angle State Detection
Fixed-Angle Tilt Switch
Suitable for confirming whether a large-angle rollover state has occurred, providing a simple and clear ON / OFF status output.
01
Abnormal Robot Vacuum Orientation Differs from Typical Tip-Over
During normal operation, robot vacuums cross carpets, thresholds, and slopes, creating continuous small-angle orientation changes. The sensing design should distinguish between normal obstacle crossing and rollover or large-angle entrapment.
Key point: Small-angle changes caused by normal obstacle crossing should not be directly classified as rollover faults.
02
Tilt Signals Can Support Abnormal-State Detection
When the robot is lifted, flipped over, or stuck at a large angle, orientation sensing can be combined with wheel speed, cliff sensors, and motor current information to improve abnormal-state detection.
Orientation signals can be cross-checked with wheel speed, cliff sensing, and motor current to reduce false detections.
03
System Flow
STEP 1Normal Cleaning
STEP 2Obstacle Crossing / Abnormal Tilt
STEP 3Orientation Detection
STEP 4Cross-Check with Other Sensors
STEP 5Stop / Alert
04
Recommended Sensing Solutions
If the requirement is only to confirm whether the robot has entered a large-angle rollover state, a fixed-angle tilt switch can be considered. If navigation attitude, slope, and detailed motion information are required, continuous sensors such as an IMU should be used.
Continuous Orientation Data
IMU / Accelerometer
Suitable for continuous measurement of navigation attitude, slope, and detailed motion information.
Reduce False Detection
Multi-Signal Cross-Checking
Cross-check orientation data with wheel speed, cliff sensing, motor current, and other signals to improve abnormal-state detection reliability.
05
Key Design Considerations
- Normal obstacle-crossing angles must remain below the abnormal trigger range.
- The robot contains motors, fans, and impact events, so vibration validation is required.
- Cross-checking with wheel speed, cliff sensing, motor current, and other signals is recommended.
- The sensor should be mounted on a fixed PCB reference and overall assembly tolerances should be considered.
06
Selection / Sensing Direction
| Application Requirement | Recommended Direction |
|---|---|
| Detect large-angle rollover | Fixed-angle tilt sensing |
| Need navigation and slope information | IMU / Accelerometer |
| Reduce false detection | Orientation + wheel speed / cliff sensing / current cross-checking |
07
Suitable Applications
Robot Vacuum
Service Robot
Compact AGV Equipment
Smart Mobile Device
Need Help Evaluating a Robot Tilt-Sensing Solution?
Provide the robot's normal obstacle-crossing angle, rollover conditions, and existing sensing architecture, and OncQue can help evaluate a suitable tilt-sensing solution.