Data Acquisition & Logging

Wireless Accelerometer - Impact Detect Sensor

Description Features Configuration Application

The ALTA Wireless Accelerometer - Impact Detect Sensor is a digital, low-power, low-profile, capacitive sensor that is able to measure acceleration on three axes to detect impact over a set g-force threshold.

Principle of Operation

The ALTA Wireless Accelerometer - Impact Detect Sensor activates when g-forces are exceeded by a user defined threshold—up to 8 g-force. The user can key in the desired threshold for the g-force trigger. This sensor has two operation modes that can be also selected

• Wireless range of 1,200+ feet through 12+ walls *

• Frequency-Hopping Spread Spectrum (FHSS)

• Improved interference immunity

• Improved power management for longer battery life **(12+ years on AA batteries)

• Encrypt-RF® Security (Diffie-Hellman Key Exchange+AES-128 CBC for sensor data messages)

• Onboard data memory stores up to 512 readings per sensor:

- 10-minute heartbeats = 3.5 days

- 2-hour heartbeats = 42 days • Over-the-air updates (future proof)

• Free iMonnit basic online wireless sensor monitoring and notification system to configure sensors, view data and set alerts via SMS text and email

*Actual range may vary depending on environment.

**Battery life is determined by sensor reporting frequency and other variables. Other power options are also available.

ALTA Commercial Coin Cell Wireless Accelerometer - Impact Detect | Technical Specifications

Supply voltage						2.0–3.8 VDC *
Current consumption						0.2 µA (sleep mode), 0.7 µA (RTC sleep), 570 µA (MCU idle), 2.5 mA
						(MCU active), 5.5 mA (radio RX mode), 22.6 mA (radio TX mode)
Operating temperature range (board circuitry and coin cell)						-7°C to +60°C (20°F to +140°F) **
Optimal battery temperature range (coin cell)						+10°C to +50°C (+50°F to +122°F)
Sensitivity						4096 count/g
Sensitivity range selections						+/-2 G, +/-4 G, +/-8 G
Measurement accuracy						±2.5 % (force: X, Y, Z)
Minimum g-force to turn on/wake up						0.050–0.100 g
Fastest update interval/heart rate in any configuration						Heartbeat: 1 minute
Bandwidth for data measurement						800 Hz
Integrated memory						Up to 512 sensor messages
Wireless range						1,200+ ft non-line-of-sight
Security						Encrypt-RF® (256-bit key exchange and AES-128 CTR)
Weight						0.7 ounces

ALTA Commercial AA Wireless Accelerometer - Impact Detect | Technical Specifications

Supply voltage					2.0–3.8 VDC (3.0–3.8 VDC using power supply) *
Current consumption					0.2 µA (sleep mode), 0.7 µA (RTC sleep), 570 µA (MCU idle), 2.5 mA
					(MCU active), 5.5 mA (radio RX mode), 22.6 mA (radio TX mode)
Operating temperature range (board circuitry and batteries)					-18°C to 55°C (0°F to 130°F) using alkaline
					-40°C to 85°C (-40°F to 185°F) using lithium **
Optimal battery temperature range (AA)					+10°C to +50°C (+50°F to +122°F)
Sensitivity					4096 count/g
Sensitivity range selections					+/-2 G, +/-4 G, +/-8 G
Measurement accuracy					±2.5 % (force: X, Y, Z)

Minimum g-force to turn on/wake up					0.050–0.100 g
Fastest update interval/heart rate in any configuration					Heartbeat: 1 minute
Bandwidth for data measurement					800 Hz
Integrated memory					Up to 512 sensor messages
Wireless range					1,200+ ft non-line-of-sight
Security					Encrypt-RF® (256-bit key exchange and AES-128 CTR)
Weight					3.7 ounces

ALTA Industrial Wireless Accelerometer - Impact Detect | Technical Specifications

Supply voltage		2.0–3.8 VDC (3.0–3.8 VDC using power supply) *
Current consumption		0.2 µA (sleep mode), 0.7 µA (RTC sleep), 570 µA (MCU idle), 2.5 mA
		(MCU active), 5.5 mA (radio RX mode), 22.6 mA (radio TX mode)
Operating temperature range (board circuitry and battery)		-40°C to +85°C (-40°F to +185°F) **
Included battery	Max temperature range	-40° to +85°C (-40° to +185°F)
	Capacity	1500 mAh
Optional solar feature	Solar panel	5VDC/30mA (53mm x 30mm)
	Charging temperature range	0° to 45°C (32° to 113°F)
	Max temperature range	-20° to 60°C (-4° to 140°F)
	Included rechargeable battery	600 mAh/>2000 charge cycles (80% of initial capacity)
	Solar efficiency	Optimized for high and low-light operation ***
	Charging efficiency	40% ****
	Luminous sustainability	250 LUX ****
Sensitivity		4096 count/g
Sensitivity range selections		+/-2 G, +/-4 G, +/-8 G
Measurement accuracy		±2.5 % (force: X, Y, Z)
Minimum g-force to turn on/wake up		0.050–0.100 g
Fastest update interval/heart rate in any configuration		Heartbeat: 1 minute
Bandwidth for data measurement		800 Hz
Integrated memory		Up to 512 sensor messages
Wireless range		1,200+ ft non-line-of-sight
Security		Encrypt-RF® (256-bit key exchange and AES-128 CTR)
Weight		4.7 ounces
Enclosure rating		NEMA 1, 2, 4, 4x, 12 and 13 rated, sealed and weather proof
UL rating		UL Listed to UL508-4x specifications (File E194432)

• Impact Detection

• Impact Load Sensing

• Many additional applications

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