Multi function timer based on single chip microcomputer
Abstract
Simulation technology based on the timer has been eliminated gradually, a new generation of digital
technology products replace sb. based on. With the increasing use of cost-effective
single-chip microcontroller, range gradually expanded, based on digitaltechnology powerful timer can
realize complex control ability, but also be able to homeappliances control. It has powerful functions, at the
same time, the volume is small, easy to use, in different situations can be converted into a variety
of different functions of theelectronic products.
Key switch power supply socket is how to achieve timing, the timer is widely
used today,many household appliances are installed the timer to control the switch or working
time;industrial control often requires a timing device, output and the signal acquisition, andpeople
need timing control air conditioning and reasonable to save the limited energy and so on. Therefore, we
try to further study the direction.
Timer two mechanical and electrical, mechanical synchronous motor timing, cost is low, but the travel
time accuracy, short service life; electronic using liquid crystal display, high precision, long life time, but
the operation is complex, high cost. Especially the control system of high precision and data acquisition
system, more accurate timing operationrequirements.
This design uses a microcontroller timer function used in the switch socket, mainly carries on the
design from the single chip microcomputer and a controllable switch, the power switch to achieve timing
system, to accurately display the time the bright lights off, and can display the clock is accurate to the
time. The system is simple and practical, simple operation, and the timer does not work when the ordinary
power socket, power supply socket which has the function of traditional, but also can save
energy, optimize the resources to. Electric water heater in daily life are used as an example, we have 24
hours of electricity, which is the most power consuming repeated heating in the electric water
heater, which is a great waste of power resources. If the power plug of electric water heateris connected to
the automatic switch socket just before electricity, can achieve high efficiency energy saving, but also can
make the water used in the high temperature state,greatly improving the efficiency of energy use.
Keywords: single chip microcomputer, a timer, a controllable switch
