Indian electronics engineers have developed and tested a novel device
that prevents automobile drivers from receiving or making calls with
phones when at the wheel, but allows passengers in the
vehicle to use their phones.
The heart of the device - a printed electronic
circuit - slightly bigger than a matchbox can also transmit details of
the driver and the vehicle to the nearest police control room in case
this is required.
To cost just about Rs. 450, it has been
developed by Abdul Shabeer, dean of research at the AVS Engineering
College, and Abdul Zubar of the Knowledge Institute of Technology, both
located in Salem, Tamil Nadu. They have reported the details of the
device and its performance in the June issue of the Journal of
Scientific & Industrial Research.
Shabeer said accidents happen when driver's attention is distracted while using the cell phone when the vehicle is in motion.
distraction can come in different forms," Shabeer told IANS on phone.
"The driver may take his eyes off the road and his hands off the wheel
while reaching for the cellphone, or his mind off the road (cognitive
distraction) while speaking on the phone."
The mobile detection
device, according to the report, is based on "system mount technology."
It basically exploits the fact that a cellphone emits a tiny amount of
radiation when activated by an incoming or outgoing call. This radiation
is picked up by an antenna coupled to the device and, if the strength
of the radiation is above a certain "threshold" (75 millivolts), the
device automatically turns on a "mobile jammer," an electronic signal
that will prevent the user of the phone from making or receiving a call.
to the report, the electronic circuit is so designed - and the
"threshold level" is set in such a way - that it can detect whether the
cellphone user is the driver of the vehicle or one of its passengers. It
prevents only the driver from making or receiving calls but not the
passengers, who will be able to use their phones.
This has been
accomplished by placing the device right above the driver's seat with
its antenna pointing towards the driver's head. Being close to the
driver, the antenna will receive radiation above the "threshold level"
and can disable the driver's phone. On the other hand, radiation
received by the antenna from cellphones used by passengers elsewhere in
the vehicle will be below the "threshold" and therefore unable to turn
on the "mobile jammer".
According to the report, the driver can
make or receive a call on cell phone only after stopping the vehicle.
"When the driver's phone receives a call, a microcontroller in the
device detects whether the vehicle is in motion or not," Shabeer said.
"If it is in motion, the system notifies the driver via a 'voice chip'
that a call is waiting. From then on, the driver has eight seconds to
bring the vehicle to stop in a safe place and complete the call."
said that in case of any violation the driver's face, captured by a
micro-camera mounted in front of the driver, along with vehicle number
plate information, will be transmitted to the nearest police control
According to Shabeer, the electronic device including
the transmitter and low resolution camera would cost only Rs. 450. "If
you go for a little high end camera, the system cost will go to a
maximum of Rs. 700," he said.
"The implementation of this system
in all vehicles will help in reduction of road accidents to a great
extent," he said, adding that he has approached the Tamil Nadu
government in this regard.
Shabeer said the system has been successfully tested in Maruti Omni vans in combination with different cellphones.
Is it possible for the driver to disable the device by pulling off its power cord or tampering with it in any other way?
"Not possible," Shabeer asserted.
device that we developed gets its power from the vehicle's ignition. So
whenever the user starts the vehicle, it will communicate with the
device. But if it fails to communicate for some reason, a message will
be transmitted to the PCR along with vehicle number plate information.
And in case the driver tries to remove or damage the device, it will
send the message to the PCR," he said.
(K.S. Jayaraman can be contacted at firstname.lastname@example.org)