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New sensor means better braking
RESEARCHERS at East China Normal University have developed a new type of speed sensor, an important component of the anti-lock braking system in vehicles.
The new sensor improves the sensitivity and stability of the system when driven at slow speeds in bad weather and on rough ground.
Applying the brakes in an emergency can result in a vehicle's wheels locking, causing a loss of control as the car goes into a spin or a skid.
An anti-lock braking system monitors what the wheels are doing and reduces the pressure on the brakes if the driver brakes too hard and keeps the vehicle on a straight course.
Current sensors don't work well at speeds below 5 kilometers an hour ?? a problem in adverse conditions.
The new sensor operates normally at temperatures from minus 40 to 150 degrees Celsius and is five times smaller than current models.
Cars equipped with the new system have been on trial in mountainous areas in Zhejiang Province and in Shanghai, with no problems reported.
The achievement has won the approval of Shanghai Science and Technology Commission.
The new sensor improves the sensitivity and stability of the system when driven at slow speeds in bad weather and on rough ground.
Applying the brakes in an emergency can result in a vehicle's wheels locking, causing a loss of control as the car goes into a spin or a skid.
An anti-lock braking system monitors what the wheels are doing and reduces the pressure on the brakes if the driver brakes too hard and keeps the vehicle on a straight course.
Current sensors don't work well at speeds below 5 kilometers an hour ?? a problem in adverse conditions.
The new sensor operates normally at temperatures from minus 40 to 150 degrees Celsius and is five times smaller than current models.
Cars equipped with the new system have been on trial in mountainous areas in Zhejiang Province and in Shanghai, with no problems reported.
The achievement has won the approval of Shanghai Science and Technology Commission.
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