Showing posts with label Automatic. Show all posts
Showing posts with label Automatic. Show all posts
Thursday, November 13, 2014
Automatic car parking indicator using Microcontroller Description Conventionally car parking systems does not have any intelligent monitoring syste
Conventionally, car parking systems does not have any intelligent monitoring system. Parking lots are monitored by human beings. All vehicles enter into the parking and waste time for searching for parking slot. Sometimes it creates blockage. Condition become worse when there are multiple parking lanes and each lane have multiple parking slots.
Use of automated system for car parking monitoring will reduce the human efforts. Display unit is installed on entrance of parking lot which will show LEDs for all Parking slot and for all parking lanes. Empty slot will be indicated by glowing the respective LED.
We have used Infra Red transmitters and Receivers for each parking slot. The IR Receivers are connected to AVR microcontroller. IR rays are obstructed when a car is parked in any parking slot. Thus AVR will come to know that which slot is empty and which slot is full. We have chosen IR module instead of RF module because we want a receiver having line of sight communication with the transmitter. But RF does not require line of sight communication. And in case of LDR, there is scope for false triggering due to sunlight or headlight of car. So considering all these points we have finalized to use IR module. For transmitter section we are going to use IR LEDs driven by a 555 timer IC. Timer IC will generate a frequency of 38 KHz, which will be given to IR LED
Saturday, November 1, 2014
Automatic detectors water tank pump circuit
This is a circuit detectors on the water pump. This circuit works automatically when the water is discharged to storage tanks or redundant. If the storage tank water runs out then the circuit will work running the pump, and an excess of water this circuit will automatically stop the pump working. Below the detection circuit:
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| Automatic detectors water tank pump schematic diagram |
R1 10K ohms resistor
R2 10K ohms resistor
R3 10K ohms resistor
R4 1K ohms resistor
R5 10K ohms resistor
R6 1K ohms resistor
C1 100nF cap
Led1 5mm green led
Led2 5mm red led
D1 4V7 zener diode
Piezo Piezo HPE-120
VR1 78L05 regulator
IC1 12F683 SOIC microcontroller from Microchip
S1 Push button
Others:
Box
9V battery
PCB
Metal strips
Hex program for the microcontroller
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