Miremadi LDR-M10 User manual

WARRANTY
MIREMADI warrants this product to be free from defects in material and workmanship for a period of 90 days from date
of shipment.
During the warranty period, MIREMADI will, at its option, either repair or replace any product that proves to be defective.
To exercise this warranty, email support and you will be given prompt assistance and return instructions. Repairs will be
made and the product returned, transportation prepaid. Repaired or replaced products are warranted for the original
warranty period of 90 days.
LIMITATION OF WARRANTY
This warranty does not apply to defects resulting from product modification, or misuse of any product or part. This
warranty also does not apply to normal wear or failure to follow instructions on maximum input voltages and polarities.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING ANY IMPLIED
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. THE REMEDIES PROVIDED HEREIN ARE
THE BUYER’S SOLE AND EXCLUSIVE REMEDIES.
NEITHER MIREMADI NOR ANY OF ITS EMPLOYEES SHALL BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF ITS INSTRUMENTS EVEN IF
MIREMADI HAS BEEN ADVISED IN ADVANCE OF THE POSSIBILITY OF SUCH DAMAGES. SUCH EXCLUDED
DAMAGES SHALL INCLUDE, BUT ARE NOT LIMITED TO: COST OF REMOVAL AND INSTALLATION, LOSSES
SUSTAINED AS THE RESULT OF INJURY TO ANY PERSON, OR DAMAGE TO PROPERTY.
THIS DEVICE IS MADE FOR HOBBY USE AND SHOULD NOT BE USED IN SAFETY CRITICAL SYSTEMS.
SAFETY PRECAUTIONS
ALTHOUGH THIS DEVICE IS EYE SAFE, DO NOT LOOK IN TO THE IR SOURCE DIRECTLY FOR PROLONGED
PERIODS. DO NOT LOOK AT THE IR SOURCE WITH MAGNIFYING GLASS OR OTHER OPTICAL INSTRUMENTS. IF
THE DEVICE IS MALFUNCTIONING, DO NOT USE, REMOVE POWER AND CONTACT SUPPORT.
OPERATION
In normal use only the Main connector is required. Use the supplied connector and make sure that when plugged in the
black wire is at the edge of the box. Apply 11V to 14V across the black and red wires with negative connected to black
wire and positive to red wire. The white wire is the range signal output. It will supply 0-5V in to high impedance and
0-2.5V into a 1K Ohm load.
For additional control the AUX connector (user supplied) can be used. The SHUT DOWN pin can be asserted high (above
1.5V) to put the device in to low power mode. This input can be used for both 3.3V and 5V systems. If left unconnected
the module defaults to the active state (ON), and operates in normal power mode.
LDR-M10
INSTRUCTION MANUAL
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The energy output on the AUX connector provides a voltage that is proportional to the returned energy. This gives
additional information on the reflectivity of the target. The output will supply 0-5V in to high impedance and 0-2.5V into a
1K Ohm load.
SPECIFICATIONS
+/- 0.1 inch resolution
+/- 20 Degree Field of View
10” to 4 feet range (depending on object reflectivity)
Will detect a white wall at 5 feet away
Analog output 0-5V
50 Hz Analog Bandwidth
Power supply voltage from 11 to 14 Volts
Less than 900 mW power consumption @11V
TTL level Shut Down pin to conserve power (100uA)
Operating Temperature range of 0-50 ˚C
Weight 65 grams
Dimensions 2” x 3.2” x 1” without mounting flange. 2” x 4” x 1” with mounting flange.
Can work outdoors in indirect sunlight
OUTPUT CHARACTERISTICS
The RANGE output is a voltage that is proportional to the range of the object being detected (Fig 2). The device is
designed to work with different target reflectivity, however, there is always a dependance of the range reading on the
target reflectivity. The calibration data supplied is obtained using a 8.5” by 11” light grey cardboard target. The data is
unique to the serial number of the device. The serial number is located on the internal PCB and can be read just above
the MAIN connector (Fig 2) with the box held at an angle.
The ENERGY output can be used to gather additional information on target reflectivity. The Energy output can be used to
detect objects at distances further than the range output. This is useful for distant object detection applications, or to
predict approaching objects.
LDR-M10
INSTRUCTION MANUAL
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Measured RANGE Voltage (X)
Distance to Target in Inches (Y)
ZONE 1 ZONE 2
ZONE 3
A B C D
FIGURE 1
a
b
c
d
There are three distinct zones in Range plot (Fig 1). There is a linear zone 1 and 2 and a second order polynomial zone 3.
The points “A” through “D”, “a” through “d” and the equations for the three zones are provided and unique to each
module. To find the distance to the object, first check to see what zone the measured voltage is located in. Then use the
appropriate equation given for each zone to obtain the distance. The following is pseudo code showing this method.
After each line, if true, the answer is returned without executing the following lines.
If (range < A) then object closer than “a”
if (range < B) then use Zone 1 equation to get distance in inches
if (range < C) then use Zone 2 equation to get distance in inches
if (range < D) then use Zone 3 equation to get distance in inches
if (range > D) then object further than “d”
LDR-M10
INSTRUCTION MANUAL
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1
DETECTOR
INFRARED LED!
SOURCE!
!
CAUTION!!
DO NOT LOOK DIRECTLY!
IN TO THE SOURCE.!
!
NEVER LOOK AT THE !
SOURCE THROUGH !
MAGNIFYING LENS OR!
OTHER OPTICS.
RETURNED!
ENERGY!
DETECTOR!
!
!
BRIGHTNESS!
IS PROPORTIONAL !
TO INCOMING ENERGY!
AT DETECTOR
2 3
4 5 6
FIGURE 2
Pin Name
Function
Description
MAIN CONNECTOR
MAIN CONNECTOR
MAIN CONNECTOR
1
INPUT
Power Input Ground return
2
INPUT
10.9 - 15 VDC Power Input (75mA @ 11V)
(Keep power supply noise low for best sensitivity)
3
OUTPUT
Voltage output proportional to range, lower voltage means
closer to sensor. 0-5 Vdc @1K Ohm source impedance
AUX CONNECTOR
AUX CONNECTOR
AUX CONNECTOR
4
INPUT
GND Return
5
INPUT
Voltage above 2 V will shutdown the device and reduce
standby current to 100uA below 0.7V or floating is normal
operation.
This pin is pulled down internally to ground
6
OUTPUT
Voltage output proportional to returned energy, higher
voltage means more energy returned to detector. 0-5 Vdc
@1K Ohm source impedance
LDR-M10
INSTRUCTION MANUAL
[email protected]