MB7138-121 Product Overview

Introduction

The MB7138-121 is a versatile electronic component that belongs to the category of ultrasonic sensors. This sensor is widely used in various applications due to its unique characteristics and functional features. In this entry, we will provide an overview of the MB7138-121, including its basic information, specifications, detailed pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

• Category: Ultrasonic Sensor
• Use: Distance measurement and object detection
• Characteristics: High accuracy, non-contact measurement, compact size
• Package: Sealed housing for protection
• Essence: Utilizes ultrasonic waves for distance sensing
• Packaging/Quantity: Typically sold individually or in small quantities

Specifications

• Operating Voltage: 3.0V - 5.5V
• Range: 20cm - 765cm
• Resolution: 1cm
• Output: Analog voltage signal
• Operating Temperature: -40°C to +70°C
• Dimensions: Compact design, typically 21mm x 29mm x 18mm

Detailed Pin Configuration

The MB7138-121 typically consists of four pins: 1. Vcc (Power supply) 2. GND (Ground) 3. Trigger (Input for initiating measurement) 4. Echo (Output for distance measurement)

Functional Features

• High Accuracy: Provides precise distance measurements
• Non-Contact Measurement: Does not require physical contact with the object being measured
• Compact Size: Suitable for integration into various devices and systems

Advantages and Disadvantages

Advantages

• Reliable distance measurement
• Wide operating voltage range
• Compact and durable design

Disadvantages

• Limited resolution compared to some other sensors
• Susceptible to interference in certain environmental conditions

Working Principles

The MB7138-121 operates based on the principle of emitting ultrasonic waves and measuring the time taken for the waves to reflect back from an object. By calculating the time difference, the sensor accurately determines the distance to the object.

Detailed Application Field Plans

The MB7138-121 finds extensive use in various fields, including: - Robotics: for obstacle avoidance and navigation - Industrial automation: for object detection and positioning - Automotive: for parking assistance and collision avoidance systems - Consumer electronics: for proximity sensing and gesture recognition

Detailed and Complete Alternative Models

Some alternative models to the MB7138-121 include: - HC-SR04 Ultrasonic Sensor - Maxbotix LV-EZ Series - SRF05 Ultrasonic Range Finder

In conclusion, the MB7138-121 ultrasonic sensor offers reliable distance measurement capabilities and is well-suited for diverse applications across different industries.

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