Ultrasonic Sensors – HVS Technologies

HVS-3323. Vehicle Speed Control and Accident-Avoidance System.

hvsadmin — Wed, 03 Sep 2025 06:46:20 +0000

The project aims to design an intelligent system that helps in preventing road accidents by alerting the driver and automatically controlling the speed of a vehicle when an obstacle is detected. Road accidents are continuously increasing in day-to-day life due to various reasons, including vehicle chasing and collisions. To minimize such accidents, precautionary methods are implemented using ultrasonic sensors. These sensors generate high-frequency sound waves and measure the time interval between sending the signal and receiving the echo to calculate the distance of an object. In this project, two ultrasonic sensors are mounted on the front and rear sides of the vehicle to detect obstacles. When an obstacle is detected, the distance is displayed on an LCD screen. If the obstacle is within 30 cm, the system automatically stops the vehicle and activates a buzzer to alert the user. A relay is used to cut off the power supply to the motor, ensuring immediate stoppage. The vehicle’s movement is controlled by DC motors interfaced with an L293D motor driver. The entire system is controlled by a microcontroller, which continuously receives distance data from the ultrasonic sensors. When the detected distance is less than the predefined threshold, the microcontroller triggers the alarm and automatically controls the vehicle’s speed. The distance readings are continuously monitored and displayed on the LCD screen. The microcontroller is programmed using embedded C language to perform these intelligent tasks efficiently.

Features:

Automatic braking system.
Object identification through ultrasonic sensor
Continuous monitoring of distance on LCD
Buzzer based alarming system.

The project makes us learn about:

Ultrasonic sensor characteristics.
DC motor working principle and need for a motor driver.
Embedded C programming.
PCB designing.

The Major Building blocks of this project are:

Regulated Power Supply.
PIC Microcontroller.
Ultrasonic sensors.
DC motor with driver.
LCD with driver.
Relay.
LED Indicators.
Buzzer with driver.
Crystal.

Software’s used:

PIC-C compiler for Embedded C programming.
PIC kit 2 programmer for dumping code into Micro controller.
Express SCH for Circuit design.

Regulated Power Supply:

BLOCK DIAGRAM:

video:

HVS-3309. Smart Buffer Stock Solution.

hvsadmin — Mon, 01 Sep 2025 10:57:49 +0000

This system monitors the amount of capacity used in given Buffer Stocks at various locations on a dashboard. It also provides a rough estimate of the weight of the stocked food.
This system has two modules namely an Analyzer module and a Security Module. The Analyzer module is the main part that monitors the warehouse and uploads to a remote server. The security module is a basic PIN code-based entry system to secure the premises.

Security system:This project makes a use of Arduino uno microcontroller. Keypad is uses to enter the password. If the password is matched with the stored password Arduino will opens the door through servo motor. Otherwise, it’s not possible.

Stock section: This system makes a use of two ultrasonic sensors is uses to monitors the percentage of stock at various locations. DHT11 is uses to monitor the temperature and humidity values. LCD is uses to display the percentage of stock, temperature and humidity values. ESP32 module has inbuilt wi-fi is uses to upload the data into the thingspeak cloud along with date and time.

The features of the project are:

Automatic buffer stock % detection and monitoring.
Monitoring sensor data buffer % on LCD module.
Using IOT thingspeak cloud platform to upload the data.

The major building blocks of this project are:

Power Supply
Arduino UNO Micro Controller.
ESP32 module.
Ultrasonic sensors.
Keypad.
Servo motor.
LCD display.
DHT11
LED indicators.

Software’s used:

Arduino IDE STUDIO compiler for Embedded C programming.
Express SCH for Circuit design.

Block Diagram:

video:

HVS-3545. Autonomous Robot using Raspberry pi and Sr04 ultrasonic sensor

hvsadmin — Tue, 29 Jul 2025 06:06:13 +0000

This project presents the design and implementation of an autonomous robot using a Raspberry Pi Zero 2W, coupled with various sensors and components to enable intelligent navigation and interaction. The robot is equipped with an ultrasonic sensor for obstacle detection and avoidance, a Bluetooth module for remote control, and motor drivers to control movement via BO motors. Additionally, LED indicators are used to provide visual feedback on the robot’s status, while a buzzer is incorporated to signal specific events or alerts. A rechargeable battery provides the necessary power for sustained operation. The system integrates the components through a combination of hardware and software, enabling the robot to navigate its environment autonomously, avoid obstacles, and respond to user commands via Bluetooth. The Raspberry Pi Zero 2W acts as the central processing unit, running the control algorithms and managing communication between the various modules. This project demonstrates the feasibility of creating a low-cost, compact, and versatile autonomous robot suitable for educational, research, or hobbyist applications.

Features:

– Autonomous navigation using ultrasonic sensor for obstacle detection.

– Bluetooth control for remote operation.

– BO motors for precise movement control.

– Motor driver for efficient motor control.

– LED indicators for status visualization.

– Buzzer for alerts and notifications.

– Rechargeable battery for portable, continuous power.

– Raspberry Pi Zero 2W as the central controller for processing and communication.

.The major building blocks of this project are:

Battery Power Supply.
Raspberry Pi Zero 2w.
Buzzer.
Led.
Ultrasonic Sensors.
Bluetooth.
Motor Driver With Bo Motors.

Software’s used:

Raspbian OS.

Block diagram:

video: