Ultrasonic Ranging Module SR-04

Ultrasonic Ranging Module Ultrasound Wave Detector Rp50000

Product Description
Voltage: DC5V;
Static current: Less than 2mA;
Output signal: Electric frequency signal, high level 5V, low level 0V;
Sensor angle: Not more than 15 degrees;
Detection distance: 2cm-450cm
High precision: Up to 0.3cm
PCB size: 4.5 * 2.0 CM

Parameter:
Center resonant frequency: 40kHz ±2kHz
Static capacitance: 3300P ± 300P
Resonant impedance: 120Ω±20Ω
Frequency bandwidth (-3dB): Δf-3dB ≥ 2kHz
Operation voltage: 300 ~ 500VP-P
Limit voltage ≤ 1000VP-P
Transmitting beam angle: 6O degrees
Operation temperature: -40 ~ +80 °c
Protection class: IP65
(1) the IO trigger ranging, to at least 10 us high level signal;
(2) module automatically send eight 40 KHZ of square wave, automatic testing if it has any signals return;
(3) a signal to return to, through the IO output top level, the high level of the last time is
From the launch ultrasonic returned to time. Test distance = (high level time * sound velocity (340 M/S)) / 2;
This module can be to provide a full range of ranging procedure: C51, PIC18F877, ultrasonic LCD1602 showed that ultrasonic LCD12864 display, digital pipe display, serial ports display, ranging reference program.