BESTWAY-Engineering and its Applications

  Auto Billing Mall Shopping Cart Using PLC Shopping is easy but waiting on a bill counter after shopping is too boring and tedious task. Huge amount of rush plus cashier preparing the bill with bar code scanner is too time consuming and results in long ques. So here we have made an innovative project which will be placed in the shopping trolley itself. The system consists of a RFID reader which is controlled by PLC. So whenever the shopper puts any product in trolley it is been detected by the rfid module and it is displayed on LCD along with the price of the product. As the shopper adds more things it is detected by the module and the price according to that increases. In case if customer changes his/her mind and doesn’t want any product added in the trolley he can remove it and the price added will be deducted automatically. At the end of shopping the shopper will press the button which when pressed adds all the product along with their price and gives the total bill to be pa...

  1.            Automated Elevator with Overload Alert Using PLC This system helps to indicate limit of an elevator, which is how many people can be inside an elevator at a particular time. The system displays the number of people inside an elevator with the help of 7 segment display. Each pair consists of 2 sensor pairs placed at a certain distance from one another in the opposite direction. The system includes Infrared Sensor pairs which are placed near the elevator door. These sensors senses when a person enters an elevator and it opens the door of the elevator and simultaneously increments the counter for the number of people entering the elevator.         The IR transmitter is used to transmit IR rays straight to the receiver which receives the input and feeds this to PLC(Programmable Logic Controller) The PLC(Programmable Logic Controller) receives the inputs. At this time the system also cou...

                 Software Timer What is timer? Timer is nothing but a kind of clock wont to measure specific time intervals. Timers have large applications altogether the sector . a tool which counts down or Up from specified time intervals is named timer. Software timer: Software timer doesn’t have any devices or parts. These timers Exists only in computer or micro controller based devices within the type of code. They calculate on the accuracy of a clock generator usually built into a hardware device that runs the software. This kinds of timers mostly utilized in phones, cooking and baking appliances. A watchdog timer could also be a computer operating properly or cop timer, software timer is used to detect and obtain over computer malfunctions. During normal operation, the pc regularly resets the watchdog timer to prevent it from elapsing, or "timing out". If, because of a hardware fault or program e...

Level indicators   Level indicator is used to detect liquid levels. This is mainly used in water treatment plants, Sewage treatment facilities, buildings , housing complexes and so many other appliances. It will sense lower to higher level of water which is connected to control panel to give the information about the level of liquids. Water level indicator is a combination of probe  sensor or float switches. Working of level indicator   The mechanism of level indicator is quite simple. It will sense the level of liquid in storage tank by using sensor probes. When water reaches a certain level it will give signal to your connected device(Probes send information back to the control panel to trigger an alarm or any indicator. When we are using any type of sensor our motor is to control all the equipment automatically, here  also same, when you connecting the level indicator in storage tank, the control panel can be programmed to automatically turn on or off ...

 What is PLC A Programmable Logic Controller, or PLC, is a Micro controller Based Device  used for industrial automation. These controllers can make  automatic  for a specific process, machinery, Home Automation  or even an entire production line. Latching is used in plc as well as hardware circuit to make the circuit in continuously on condition.   Latching Circuit in PLC Generally Latching is a circuit used to keep the output continuously in on Condition. Latching is only applicable for the push button or switches which has spring act. When you are using hardware circuit you can use relay or contactors, these two components is used to make load in on condition. In Below concepts we can understand the concepts of latching and unlatching circuit by using switches   Case1: When you are using Toggle switch, latching is not required. Check in below circuit. In this case toggle switc...