Four Channel wireless system

Basic four channel wireless

Relays, The Electromechanical amplifier

How Encoders and Decoders work

Encoder and Decoder Selection Guide

Characteristics of wireless systems


Pyroelectric Infrared Sensor and Fresnel lens

DPB PYD1798 Digital Motion Detector components

DP-001 Digital Motion Detector Module

DP-002 Digital Motion Detector Module

Digital direction sensing motion detector

Motion detector module

Motion detector kit 

How IR motion detector components work

Focusing devices for pyroelectric sensors

RIR Reflective Infrared devices  

Free schematics and design info



Digital Direction Sensing Infrared Motion Detector

With NEW  Digital  Sensors


DP-005 showing size compared to 9V battery. DP-005 with cover removed. Cable in strain relief collet.  Sensing of direction will be as shown by the arrows above.

 The DP-005 is 1.1 inch (28mm) deep, 2.4 inch (61mm) wide, and 3.3 inch (84mm) long with mounting flanges extending to 4.3 inch (110mm).

Click on picture to enlarge

DP-005  PRICE $54.95

The DP-005 digital direction sensing pyroelectric infrared motion detector is designed to detect infrared radiation (IR) from a moving human or animal both in daylight and at night and to indicate the direction of movement.

Some applications are:

Entry and Exit monitoring Occupancy monitoring Automatic lighting
Video recorder activation Child or animal monitoring General security devices

The circuits are housed in a plastic enclosure with a Fresnel lens mounted in its cover. It includes dual digital pyroelectric infrared sensors, a microprocessor and two output transistors; one for each direction. An on-board voltage regulator powers the circuits and accepts an external 4.5 to 15 volt DC power supply voltage.

The output transistors within the DP-005 can sink up to 200 milliamperes each to directly drive relays, light emitting diodes or other loads. The outputs can also be fed into a logic or timing circuit to add specific functions such as robot control and counting. 


      15 foot (4.5 meter) detection distance

    • On board voltage regulator
      • Can be powered by 4.5 to 15 volts DC

    • Micropower circuits for low current drain
      • Average current < 80 microamperes
      • Long battery life

    • High current output drivers
      • 200 milliampere current sink
      • Can directly drive remote relays

    • Programmable sensitivity setting
      • Adjusts detection range

    • Programmable dwell setting
      • Adjusts output ON time

    • Direction sensing or bi-directional

    • Only four wire connections needed
      • Two for power
      • Two for output


    Digital  Technology

    The Glolab DP-005 uses two  Digital  infrared detectors. This new technology incorporates a sensor, amplifier, filter, A/D converter in a TO5 package. 

    Unlike typical analog pyroelectric sensors, the digital sensor outputs serial data pulses that represent the amplitude of detected infrared radiation in digital form. Since all of the amplification and signal processing is done within the sensor package, the detector has very high immunity to RF radiation from cell phones and other sources. 

    Below is a block diagram of the DP-005. Power is supplied to the digital pyroelectric sensors and to the processor through a micropower voltage regulator. The processor decodes serial bits from the sensors and turns an NFET transistor on when motion is detected. The amount of time that the NFET remains on (dwell) can be programmed. Detection sensitivity that affects detection range can also be programmed. Programming is done by on-board DIP switches. The DP-005 is supplied with default settings of medium sensitivity and 1 second dwell time. 

    A diode is connected from each output to +V to suppress voltage transients from inductive loads.


    Driving light emitting diodes

    A resistor is required in series with the LEDs to limit current. The resistor value can be chosen for the power supply voltage and the desired LED intensity. Only one LED will be on at a time.


    Jumpered outputs driving a buzzer

    Outputs can be connected (jumpered) together for bi-directional sensing. The DP-005 can also be programmed for distinctive output patterns that indicate direction even when only one LED or other output indicator is used. This diagram shows a piezo buzzer being driven from jumpered outputs. It can be programmed to produce three short tones in one direction and one long tone in the other direction.

    See how to order

    and view or print a complete manual for the DP-005 module. Manual includes functional description and application diagrams.

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Copyright 2015
Glolab Corporation