Wireless Industrial Remotes With Frequency Hopping Spread Spectrum Technology
Frequency Hopping Spread Spectrum is a unique method that is used for
transmitting radio signals by rapidly switching a carrier among many frequency
channels by using a pseudorandom sequence known to both transmitter and
receiver. During these days the wireless industrial radio remote control systems
are being manufactured by utilizing this frequency hopping spread spectrum
technology in order to provide the interference free control Rigid flex PCB.
Radio remote
controllers, manufactured by using Frequency Hopping Spread Spectrum (FHSS)
Technology, offer three main advantages over the fixed frequency transmission.
These three advantages are:
1.The spread-spectrum signals are extremely
high resistant to the narrowband interferences. During the process of
re-collecting, a spread signal generally spreads out the interfering signal, and
it causes to recede into the background.
2.It is really difficult to
intercept spread-spectrum signals. The FHSS simply appears as an increase in the
background noise comes from a narrow bound receiver.
3.The transmission
in spread-spectrum can always share a frequency band with many types of
conventional transmission with minimal interference. As a result of adding
spread-spectrum minimal noise is added to the narrow frequency communications.
At the same time the bandwidth is also utilized more efficiently.
During
these days, the manufacturers are producing wireless industrial remotes for
gigantic machines. Industrial remotes are utilizing as a vital tools in
different sectors such as leak detectors at bulk plants China PCB Prototype, aircraft
refueling, driver authorization in bulk transports, and also as process
controls. Interference free control is one of the chief requirements in such
wireless controllers. So, all of these modern remote control systems are
manufactured by using spread spectrum frequency hopping technology.
FHSS
technology helps the wireless controller to prevent any of the other signals
that interferes in the system. During such signal interference, the FHSS
technology shuts down the whole machine without continuing a further
disturbance. Any loss of signal or signal interference results the whole
machines stop immediately. This ensures the productivity of the machine and also
increases job safety.
Generally the radio remote controller system
includes two consecutive parts a handheld transmitter and a receiver. The
transmitter used in these industrial wirelesses is so powerful that they can
catch the tiniest of signals. When the key is pressed in the handheld
transmitter, a signal is sent to the receiver. The receiver then reads out the
signal and send signal to the machines so that it can work accordingly. The
transmitter frequency varies with different models. Normal transmitters are
equipped with 902-928 MHz FHSS. 433.92, 869.7 and 2.4GHz are also available. The
transmitter has a normal power of 100mW and they work with 56 bit DES encryption
key. An internal mounted a�on carda�? PCB mount antenna is also included with
this transmitter with a normal range of 500 feet. The KQLAC4490-100 approved
transmitters are constructed with a rugged weatherproof polymer enclosure in
order to ensure security of the products.
The receivers also possess a
frequency power of 902-928MHz FHSS. Optional 433.92, 869.7 and 2.4GHz are also
available. The receivers can be controlled with a normal power supply of
12/24VDC. Optional 120VAC systems are also available.
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