Motion Bar

The MotionBar is a multiple Infrared Beam device for short range internal use. Four time multiplexed beams are arranged with a separation of 75mm, a signal being generated if movement is detected. However, unlike a conventional infrared beam sensor, the MotionBar provides a means of determining the direction of movement. The MotionBar is housed in a white ABS box 300mm long x 44mm wide x 22mm deep, allowing a very compact and attractive installation. Additional fixings are provided which permit a wide range of installation options. Installation is facilitated by the provision of several features such as test LEDs for each beam, automatic gain reduction during installation, and environmental outputs are provided which will warn of impending problems.

The MotionBar is mounted with the four beams horizontal and the transmitter and receiver up to four metres apart. As an object or person moves through the detection area each beam is broken in turn. The processing electronics within the unit senses this pattern and activates one of two relays, one indicating movement from left to right and the other indicating movement right to left.

As the MotionBar provides not only an indication of movement, but will also signal the direction of movement . It has the potential for a wide range of applications particularly in Access Control, Process Control and Security installations.

Specification

  • Number of beams: 4
  • Modulation: Time Division Multiplex
  • Alignment Angle: 17 degrees
  • Range: 4 metres (maximum)
  • LED indications: 4, each indicating the status of one beam
  • Output: Clean relay contacts. Open when movement is detected.
  • Current consumption: 60mA (typ)
  • Operating Voltage: 10 to 15 Volts d.c.
  • Dimensions: 300mm high
  • 44mm wide
  • 22mm deep

Interconnections

Tx to Rx: 5 core plus two if tamper detection is required

Installation

The transmitter and receiver may be mounted either directly on to the wall (with the beams parallel to the wall) or at 90 degrees using the supplied bracket. Alternatively, the bracket may be used to mount either unit continuously through 180 degrees.

Clean relay contacts are provided for each of the two outputs. Cabling consists of a five or seven core cable between the transmitter and receiver plus cables to the control equipment as normal.