HC-SR04 PDF даташит
Спецификация HC-SR04 изготовлена «ELECFreaks» и имеет функцию, называемую «Ultrasonic User Guide». |
|
Детали детали
Номер произв | HC-SR04 |
Описание | Ultrasonic User Guide |
Производители | ELECFreaks |
логотип |
6 Pages
No Preview Available ! |
HC-SR04 User Guide
Part 1 Ultrasonic Introduction
1. 1 Ultrasonic Definition
The human ear can hear sound frequency around 20HZ ~ 20KHZ, and
ultrasonic is the sound wave beyond the human ability of 20KHZ .
1.2 Ultrasonic distance measurement principle
Ultrasonic transmitter emitted an ultrasonic wave in one direction, and started
timing when it launched. Ultrasonic spread in the air, and would return
immediately when it encountered obstacles on the way. At last, the ultrasonic
receiver would stop timing when it received the reflected wave. As Ultrasonic
spread velocity is 340m / s in the air, based on the timer record t, we can
calculate the distance (s) between the obstacle and transmitter, namely: s =
340t / 2, which is so- called time difference distance measurement principle
The principle of ultrasonic distance measurement used the already-known air
spreading velocity, measuring the time from launch to reflection when it
encountered obstacle, and then calculate the distance between the transmitter
and the obstacle according to the time and the velocity. Thus, the principle of
ultrasonic distance measurement is the same with radar.
Distance Measurement formula is expressed as: L = C X T
In the formula, L is the measured distance, and C is the ultrasonic spreading
velocity in air, also, T represents time (T is half the time value from transmitting
to receiving ).
1
No Preview Available ! |
1.3 Ultrasonic Application
Ultrasonic Application Technology is the thing which developed in recent
decades. With the ultrasonic advance, and the electronic technology
development, especially as high-power semiconductor device technology
matures, the application of ultrasonic has become increasingly widespread:
� Ultrasonic measurement of distance, depth and thickness;
� Ultrasonic testing;
� Ultrasound imaging;
� Ultrasonic machining, such as polishing, drilling;
� Ultrasonic cleaning;
� Ultrasonic welding;
Part 2 HC-SR04 Ultrasonic Module Introduction
2.1 Product Features
� Stable performance
� Accurate distance measurement
� High-density
� Small blind
Application Areas:
� Robotics barrier
� Object distance measurement
� Level detection
� Public security
� Parking detection
2
No Preview Available ! |
2.2 Product Image
2.3、Module pin definitions
Types
HC-SR04
Pin Symbol
VCC
Trig
Echo
GND
Pin Function Description
5V power supply
Trigger pin
Receive pin
Power ground
2.4、Electrical parameters
Electrical Parameters
Operating Voltage
Operating Current
Operating Frequency
Farthest Range
Nearest Range
Measuring Angle
Input Trigger Signal
Output Echo Signal
Dimensions
HC-SR04 Ultrasonic Module
DC-5V
15mA
40KHZ
4m
2cm
15 Degree
10us TTL pulse
Output TTL level signal, proportional
with range
45*20*15mm
3
Скачать PDF:
[ HC-SR04.PDF Даташит ]
Номер в каталоге | Описание | Производители |
HC-SR04 | Ultrasonic Ranging Module | ELECFreaks |
HC-SR04 | Ultrasonic User Guide | ELECFreaks |
Номер в каталоге | Описание | Производители |
TL431 | 100 мА, регулируемый прецизионный шунтирующий регулятор |
Unisonic Technologies |
IRF840 | 8 А, 500 В, N-канальный МОП-транзистор |
Vishay |
LM317 | Линейный стабилизатор напряжения, 1,5 А |
STMicroelectronics |
DataSheet26.com | 2020 | Контакты | Поиск |