User manual

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When using the DUR5200 with the third party controller, the power supply and the input/output

signals should be connected properly (please refer to Section VII.3 Connections). The basic operation

is illustrated in Figure VII.1.

Range measurement starts from the rising edge of TE. Then the controller set TE to low (logic 0) after

t1 (250 µsec). The controller should measure the time interval td from the rising edge of TE to the first

rising edge of RS, which is the returned sound wave. td is equal to two times of the traveling time

between the sensor to the object (transmitting and echoing). The time period between two

measurements should be no less than 20 msec. The minimum distance that the DUR5200 can

measure is 4 cm. This means that if the range is less than 4 cm, it will be reported as 4 cm.

Figure VII.1 Basic Operation Timing

The distance to object (in meter) can be obtained as follows:

Distance to object (in meter) = td (in second) * v (in meter/second) / 2

VII.3 Connections

VII.3.1 Board Structure

Figure VII.1 illustrates the structure of the board.

Figure VII.1 DUR5200 Structure

VII.3.2 Connector Description

The DUR5200 can be connected to the controller system via a 4-pin 2.54 mm-pitch single row

connector:

Table VII.1 Ultrasonic Range Sensor Connectors

Pin Name Function

1 Vcc Positive power source, 5 V DC

2 RS Ultrasonic echo receiving signal, active rising edge output

3 TE Ultrasonic transmitting enable, active high input