Jameco Part number 151482
151482 - Ultrasonic Sensor User's Guide
Beam Pattern
The beam pattern is conical with a total angle of about 15
degrees. The cone starts at the face of the sensor at about
1.5 inches in diameter and grows from there as shown in
the diagram below. The beam pattern is approximate and
represents the boundary where the return echoes are 3db
down.
Orientation
The transducer orientation should be perpendicular to the
target object for best results. The sensor will loose the
target if the ultrasound energy is reflected away from the
transducer rather than back to it. Curved or spherical
objects make good targets. Make sure other unintended
targets are not visible to the sensor.
Connections
Ultrasonic transducer
The ultrasonic transducer is provided with a cable
attached. Connect the transducer cable (2-pin brown
female Molex connector) into the mating
Transducer
Connector
on the circuit board.
The two BLADE terminals press onto mating terminals
on the transducer. The shield end (ground) should be
attached to the terminal of the transducer's outer shell,
placing the outer shell at ground potential.
Power Input
Connect a +8 to 24 volts DC power supply via the
DC
+
and
GND
terminals of the
Terminal block
Connecting the
power backward will not damage the board. As soon as
you apply power, the
Power
Indicator
will light and the transducer will begin clicking
repetitively.
RS-232 Data Output
The system provides an RS-232 serial data output on the
TX
terminal of the
terminal block
as shown in the above
drawing. There is no serial data input. The output is
connected as follows to an RS-232 device input:
Sensor Terminal
Input Device
RS-232 Cable
TX
RS-232 In
RED
Gnd
Ground
GREEN
The RS-232 cable included with the sensor connects the
sensor to a standard personal computer serial port
(COM1 or COM2). One end of the cable is a 9-pin
female (DB9F) connector that mates with a standard PC
9-pin COM port connector. The other cable end has 2
tinned wires that connect to the sensor terminal block
listed above in the Sensor Terminal column.
Senix Corporation, 52 Maple St., Bristol, VT 05443
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