SenSpot provides an easy to install, scalable solution for distributed structural integrity monitoring. SenSpot technology offers a high-performance method for large-scale sensing, wireless synchronization, and ultra-energy efficient wireless communication. SenSpot is designed to operate maintenance-free for more than a decade. After installation, SenSpot does not need calibration, battery replacement, or any other maintenance during its entire service life. Due to small size and light weight, adhesive-mount SenSpot sensors can be applied easily to as many critical spots on a structure as needed, with minimal installation effort.
SenSpot displacement meter can be used for measuring the progress of the existing cracks in a structure.
- Long lifetime (10 years)
- Wireless communication (IEEE 802.15.4)
- Lightweight (about 235 grams or 8.3oz)
Wireless transmitter: 120 g (4.2oz)
Cable (3ft): 30 g (1oz)
Displacement sensing element: Refer to figure 1.
Wireless transmitter: 50mm (1.96”) x 50mm (1.96”) x 34mm (1.34”).
Displacement sensing element: Refer to figure 1.
- Communication range: 300m (980ft) for reliable communication.
- Resolution: 0.01mm (0.4mil).
- Adjustable sampling interval: The regular sampling interval can be adjusted either remotely or locally by user from 100ms (10 samples/sec) to 15sec.
adjusted either remotely or locally by user from 12sec to 360sec.
- Burst mode: High-rate data transmission triggered by sudden displacement changes (Only for Type C):
Perfect for recording the waveform of a sudden displacement change (e.g., displacement event) caused by live load.
User adjustable sampling rate for event detection and high-rate data from 10 to 100 samples per second.
User adjustable triggering threshold from 0.025mm for detecting displacement event
(e.g., heavy trucks passing over a bridge, wind gust, loading cycles).
- Measurement Range: 50mm (2”), 75mm (3”), 100mm (4”), 150mm (6”) and 300mm (12”).
Mechanical stroke length of the sensing element: 53mm (2.1”), 78mm (3.1”), 103mm (4.1”), 150mm (6”), 300mm (12”).
Measurement non-linearity: <= ±0.10% (Full stroke)
- Working temperature: -40°C to +65°C (-40°F to +150°F)
- Ingress Protection: IP66, weatherproof. Protected against rain, snow, and UV exposure.
- Power source: Standard non-rechargeable CR123 battery.
- Different types:
Type D: Sampling from every 100ms (10 samples/sec) to every 15 seconds.
Type C: similar to type D with event detection capability. Start transmitting high rate measurement (up to 100 samples/second) upon detecting sudden change of displacement.
