During this pandemic situation, the residential apartment fixed a LCD screen that is placed in the main gate to caution the visitor. Assume that a digital infrared (IR) sensor is fixed at the main gate of the apartment for monitoring the visitor. The IR sensor module is connected to the INTO pin of 8051. Whenever a visitor enters in to the apartment, an intemuption will be observed by the IR sensor, then the LCD should display "ENTRY RESTRICTED". Write an 8051 ASM program for the above system. Assume the crystal frequency is 12 MHz.

During this pandemic situation, the residential apartment fixed a LCD screen that is placed in the main gate to caution the visitor. Assume that a digital infrared (IR) sensor is fixed at the main gate of the apartment for monitoring the visitor. The IR sensor module is connected to the INTO pin of 8051. Whenever a visitor enters in to the apartment, an intemuption will be observed by the IR sensor, then the LCD should display "ENTRY RESTRICTED". Write an 8051 ASM program for the above system. Assume the crystal frequency is 12 MHz.

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter17: Commercial And Industrial Air-conditioning Control Systems

Section: Chapter Questions

Problem 24RQ

See similar textbooks

Similar questions

I have a wooden toy train that runs on wooden tracks. I would like to place two ESP-WROOM-32 Boards on top of the train. Broadcast communication (which involves radio frequency, not Wi-Fi) would help communicate about the train's lateness to five other wooden trains on the same track. Local communication would help communicate to the train station about the train's lateness. I would also need radio frequency Tx-Rx Modules for discharging and undergoing the signal, and repeaters just in case the signal loses power due to long-distance traveling. My wooden train should be automated. It should run at 4 inches per second, keep a minimum distance of 30 seconds away from the other wooden trains, and make a 17-second-long stop every 500 seconds. What's the procedure to connect the components? What's the Arduino code (C++) for this project?
(c) Sketch a complete flow chart of digital clock circuit by using the terms listed in Figure Q3(c). Display on LCD Sec. Display Min. Display Hour Display & Alarm Figure Q3(c)
What will be the maximum and the minimum value of VSWR? Please calculate thoroughly.
Complete the wiring below, such that the two sensors are connected in series and capable of controlling the given load. SENSORS in SERIES ... Brown Brown 0-30 Vpc SUPPLY Black Black PNP PNP Blue Blue
QUESTION 3 A Single Phase 220v,2KW Heater is connected across a Single phase 60HZ Supply with 311 Volts peak through an SCR .For firing delay of 600. calculate : Power absorbed by the Heater Element • Conduction angle • Extinction angle. • Turnoff time. • Draw the waveforms
The glass cover in a flat plate collector serves what purpose? O a. All of these O b. It allows solar radiation to get in. O c.It helps reduce convection heat loss. O d. It prevents long wave infrared to go out.
Look up the different vacuum gauges used and describe how they work. There are different ones used for the different vacuum ranges. These are: convectron, capacitance manometer, and ionization gauge types. Look at the sputter chamber and find the gauges, take some photos. There is one on the load lock as well.
Quèstion 2 If BJT is operated in saturation region, it will act as a closed switch. True False Moving to another question will save this response. Chp
Which of the following statements is true for an SCR. O A. It is an on-only controllable switch, which is turned on by a gating signal and cannot be turned off externally; only system conditions can turn off the device once it is on O B. None of the other choices are correct O C. It is a controllable switch, which is turned on by applying a gating signal and is turned off when the gating is removed O D. It is an off-only controllable switch, which is turned off by a gating signal as needed O E. It is an on-off controllable switch, which is turned on and off by a gating signal as needed
8. Explain about the following : (a) Sphere gap arrester (b) Horn gap arrester (c) Maximum discharge current (d) Coefficient of earthing (e) Ferranti surge absorber
Draw the basic building blocks of the following systems. Explain briefly the operation/function(s) of each block in your system. Recommend probable integrated circuits to be used per operation/function(s) in your system. 1. A system that will monitor and control the level of water in a dam. 2. A system that will switch ON the AC power generator as soon as the main AC source is OFF. Switch OFF the AC power generator when the main AC power is ON.
Design a circuit and write an Arduino code to displays "5 seconds elapsed" and blink an LED every 5 second (use millis) If it detects a motion (use PIR), it should then measure the distance of the object (use ultrasonic or IR) If a button (interrupt) is suddenly pressed, turn on 3 LEDS Don't use library