Vehicle Detect/Counter
General Description
The ALTA® Wireless Vehicle Detect/Counter Sensor detects the presence of a vehicle or counts oncoming traffic using a 9-ft. pneumatic tube.
Key Features
Detects the presence of vehicles.
Can detect and count moving vehicles.
Signal hose anchor and mounting spikes are included with purchase.
Offers adjustable sensitivity.
Configure thresholds for critical condition monitoring.
Principles of Operation
The ALTA Wireless Vehicle Detect/Counter Sensor uses a pressure-activated switch to detect or count vehicles that drive over the 9-ft. rubber tube. The sensor has three modes, One Axle Trigger, Two Axle Trigger, and Two Axle Count. When in either trigger state, the sensor will report to the gateway each time a car is detected.
If the sensor is in Two Axle Count mode, the sensor will count the number of vehicles that cross the tube over a user-configurable time interval or Heartbeat. On every Heartbeat, the count is sent to the gateway, making the data available in iMonnit or another approved data service.
This device ignores normal human or animal traffic across the tube to prevent miscounts (Stomping on the tube can produce a count/detect). The sensor sensitivity is factory calibrated for accuracy, but it can be adjusted if needed (see the user guide for adjustment procedure).
Features of Monnit ALTA Sensors
Wireless range of 2,000+ feet through 18+ walls1
Frequency-Hopping Spread Spectrum (FHSS)
Best-in-class interference immunity
Best-in-class power management for longer battery life2
Encrypt-RF® Security (Diffie-Hellman Key Exchange + Advanced Encryption Standard (AES)-128 Cipher Block Chaining (CBC) for sensor data messages)
Sensor logs 2000 to 4000 readings if the gateway connection is lost (non-volatile flash, persists through power cycling):
10-minute Heartbeats = ~ 22 days
2-hour Heartbeats = ~ 266 days
Automatic over-the-air updates to sensor firmware (future-proof)
Free iMonnit Basic Online Wireless Sensor Monitoring and Notification System to configure sensors, view data, and send alerts via SMS text, email, and voice call
1 Actual range may vary depending on the environment and gateway.
2 Battery life is determined by the sensor reporting frequency and other variables. Other power options are also available
