waterproof ultrasonic sensor for distance measurement

Ultrasonic Sensor,detector,ranging module
1.High sensitivity
2.Narrow fade zone
3.Quick response
4.water proof funtion

Ultrasonic Sensor Module 

Technical Specification

 

 

1,Product synopsis

BLJ-ME007Y ultrasonic sensor is  non-contact 

distance  measurement  module,  which 

is also compatible  with electronic  brick. 

It’s  designed  for  easy  modular  project 

usage with industrial performance.

 

 

2,Product principle

Ultrasonic ranging module BLJ-ME007Y provides 30cm - 300cm non-contact measurement function, the ranging accuracy can reach to 3mm. 

The modules includes ultrasonic transmitters, receiver and control circuit. 

The basic principle of work:

l Using IO trigger for at least 10us high level signal, 

l The Module automatically sends eight 40 kHz and detect whether 

there is a pulse signal back. 

l IF the signal back, through high level , time of high output IO duration 

is the time from sending ultrasonic to returning. Test distance = (high level 

time×velocity of sound (340M/S) /2

3,Features 

Detecting range: 30cm-300cm 

Best in 30 degree angle 

Electronic brick compatible interface 

5VDC power supply 

Breadboard friendly 

Dual transducer

Arduino library ready

 

 

5,Sequence chart

 

The BLJ-ME007Y Timing diagram is shown below. You only need to supply a short 10uS pulse to the trigger input to start the ranging. The BLJ-ME007Y will send out an 8 cycle burst of ultrasound at 40khz and raise its echo line high. It then listens for an echo, and as soon as it detects one it lowers the echo line again. The echo line is therefore a pulse whose width is proportional to the distance to the object. By timing the pulse it is possible to calculate the range in inches/centimeters or anything else. If nothing is detected then the BLJ-ME007Y will lower its echo line anyway after about 36mS