Impact Detector
Was I bumped? If so, how hard?
Hummingbird Electronics manufactures a range of rugged, calibration-free electronic impact detectors. Impact detectors measure G-forces exerted on equipment and trigger an alarm if acceptable levels are exceeded.
Powerful Performance
Designed for harsh automotive environments, the modules feature transient voltage protection on the supply and short circuit protected outputs.
Impact detectors measure harsh accelerations and braking associated with strong bumps, knocks and crashes. Two outputs are provided, each with varying thresholds. Upon detecting G forces in excess of the lower threshold, the low sensitivity output will go high (and the LED will light), and then at the higher threshold, the harsh sensitivity output will go high. The outputs will remain high for 30 seconds and then will return to 0V for at least 1 second before a further event is allowed.
The impact detector would typically be connected to a relay which would drive a buzzer or light as a warning to the driver.
Impact detectors are available with high current outputs to allow direct connection to a relay or other device.
When power is applied, the red light will light whilst the unit is performing self-test and calibration activities – this will typically last for 15 seconds.
Impact detectors measure harsh accelerations and braking associated with strong bumps, knocks and crashes. Two outputs are provided, each with varying thresholds. Upon detecting G forces in excess of the lower threshold, the low sensitivity output will go high (and the LED will light), and then at the higher threshold, the harsh sensitivity output will go high. The outputs will remain high for 30 seconds and then will return to 0V for at least 1 second before a further event is allowed.
The impact detector would typically be connected to a relay which would drive a buzzer or light as a warning to the driver.
Impact detectors are available with high current outputs to allow direct connection to a relay or other device.
When power is applied, the red light will light whilst the unit is performing self-test and calibration activities – this will typically last for 15 seconds.
Rugged Hardware
The impact detector is supplied in a rugged ABS plastic enclosure that is completely waterproof. Provision for screw mounting when required is provided.
Power to the unit and switch outputs are provided through colour coded wires.
Power to the unit and switch outputs are provided through colour coded wires.
Interface Specifications
- Red: input voltage (10V to 30V)
- Black: ground (0V)
- Green: lower G output
- Yellow: higher G output
Typical G-Forces
| Event | Typical Car | Sports Car | F-1 Race Car | Large Truck |
|---|---|---|---|---|
| Starting | 0.3-0.5 | >0.9 | 1.7 | <0.2 |
| Braking | 0.8-1.0 | >1.3 | 2 | ~0.6 |
| Cornering | 0.6-1.0 | >2.5 | 3 | ~0.5 |
These 2 identical vehicles will experience G forces of approximately 2.5G's assuming a crumple zone of 35cm.
These 2 identical vehicles will experience G forces of approximately 2.5G's assuming a crumple zone of 35cm.
Electrical Specifications
- Input voltage: 10V to 30V
- Power consumption: 156mW (13mA at 12V), 312mW (at 24V)
- Output current, source or sink: 15mA (standard), 150mA (high current version)
- Outputs will be triggered for 30 seconds after an event after which time they will return to 0V
Physical Characteristics
35mm (width) x 35mm (length) x 20mm (height) – baseplate 51mm wide
Documentation & Downloads
WarrantyDisclaimer
DISCLAIMER
Hummingbird Electronics Pty Ltd has designed the product for use in a broad range of applications. It is however solely the customer's responsibility to evaluate the device and determine it's suitability in their end application.Hummingbird Electronics Pty Ltd does not suggest or make any recommendation as to the suitability of parameters that determine angle, height, impact, speed, force, accident, harsh braking, roll-over or rate-of-turn events, input or output voltage or current. Parameter values stated or implied in this document are for explanation only and should not be taken as typical or representative of a real world situation.
USE OF PRODUCTS
Products are not authorised for use in critical safety or other applications where a failure may reasonably be expected to result in personal injury, loss of life, or catastrophic property damage. If a customer uses or sells the products for use in any such applications, the customer acknowledges that such use or sale is at customer's sole risk. The customer will indemnify, defend or hold Hummingbird Electronics and their electronic component suppliers/assemblers harmless from and against any and all liabilities and costs arising out of or in connection with use of product or sale.
