Harsh Braking and Accident Detector (HMBS8888)
Know When Those In Your Care Require Assistance Even If They Are Unable To Request It
Hummingbird's Accident and Harsh Braking Detector is an impact sensor that has been optimised to detect forces typical of those involved in harsh driving and vehicle accidents. Additional roll-over detection has also been incorporated.
The units are designed to trigger an alarm when harsh braking; an impact or an upside down vehicle is detected.
The units are designed to trigger an alarm when harsh braking; an impact or an upside down vehicle is detected.
Powerful Performance
Hummingbird's Accident Detector measures G-forces in all three dimensions and is able to detect harsh braking; horizontal impacts at any angle to the vehicle and roll-over.
The harsh braking output is triggered if an acceleration or deceleration exceeding 0.7G's is detected for more than 400msec. The horizontal impact trigger is activated if the vehicle experiences an impact resulting in a force of 7G or more for a period exceeding 8 msec. Roll-over detection is achieved using an integrated tilt sensor. To ensure the minimum number of false alarms, the tilt sensor is heavily damped so that driving on poor roads will not cause a false alarm.
Two trigger outputs are provided. If a harsh braking event is detected, the green wire will go from 0V to the input voltage. If an impact event or roll-over is detected, the yellow wire will go from 0V to the input voltage. In either event, the red LED will light. Assuming that the event that caused the trigger is no longer present, the trigger outputs will return to 0V and the LED will go off after approximately 30 seconds.
When power is first applied to the unit, the red LED will light for approximately 20 seconds. The sensor is calibrating itself during this time and will not be able to detect any events.
Designed for harsh automotive environments, the module features transient voltage protection on the supply and short circuit protected outputs.
The harsh braking output is triggered if an acceleration or deceleration exceeding 0.7G's is detected for more than 400msec. The horizontal impact trigger is activated if the vehicle experiences an impact resulting in a force of 7G or more for a period exceeding 8 msec. Roll-over detection is achieved using an integrated tilt sensor. To ensure the minimum number of false alarms, the tilt sensor is heavily damped so that driving on poor roads will not cause a false alarm.
Two trigger outputs are provided. If a harsh braking event is detected, the green wire will go from 0V to the input voltage. If an impact event or roll-over is detected, the yellow wire will go from 0V to the input voltage. In either event, the red LED will light. Assuming that the event that caused the trigger is no longer present, the trigger outputs will return to 0V and the LED will go off after approximately 30 seconds.
When power is first applied to the unit, the red LED will light for approximately 20 seconds. The sensor is calibrating itself during this time and will not be able to detect any events.
Designed for harsh automotive environments, the module features transient voltage protection on the supply and short circuit protected outputs.
Rugged Hardware
Accident Detectors are supplied in a rugged ABS plastic enclosure that is water resistant. Provision for screw mounting when required is provided.
Power to the unit and pulse outputs are provided through four colour coded wires.
Power to the unit and pulse outputs are provided through four colour coded wires.
Electrical Characteristics
- Input voltage: 6V to 30V
- Power consumption: 160mW (13mA at 12V)
- Trigger output: Trigger-on: Vin-1; Trigger off: less than 20mV; maximum current: 25mA
- Harsh braking threshold: 0.7G for more than 400msec
- Impact Threshold: 7G at any angle to the horizontal
- Rollover threshold: 90 degrees from horizontal for 1 sec
Physical Characteristics
- 52mm (L) - includes mounting bracket, 35mm (W), 21mm (H)
Environmental Specifications
- Operating temperature: -40oC to +85oC
- Storage temperature: -55oC to +105oC
- Humidity: 5% to 95% R.H. non condensing at 60oC
Interface Specifications
Power and alarm output:
- Red: input voltage (6V to 30V)
- Black: ground (0V)
- Green: harsh braking alarm output
- Yellow: impact and rollover alarm output
Typical harsh braking event
Documentation & Downloads
Braking Detector.pdfDisclaimer
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.
