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BLJ-ME007Y

ETC
Part Number BLJ-ME007Y
Manufacturer ETC
Description Ultrasonic Sensor
Published Mar 10, 2015
Detailed Description BLJ-ME007Y Ultrasonic Sensor Module Technical Specification 1、Product synopsis BLJ-ME007Y ultrasonic sensor is non-conta...
Datasheet PDF File BLJ-ME007Y PDF File

BLJ-ME007Y
BLJ-ME007Y

Overview
BLJ-ME007Y 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:  Using IO trigger for at least 10us high level signal,  The Module automatically sends eight 40 kHz and detect whether there is a pulse signal back.
 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 4、 Specifications Supply voltage Global Current Consumption Ultrasonic Frequency Maximal Range Minimal Range Resolution Trigger Pulse W idth Outline Dimension 5v 15 mA 40k Hz 300 cm 30 cm 1 cm 10 μs 40x27x23 mm 1 Practical test of performance, Best in 30 degree angle 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 2 ...


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