Skip to main content

New Siemens loop detector functionality

An improved version of the SLD4 loop detector family is now available from Siemens. The upgraded SLD4 is said to include sophisticated length-based classification with configurable outputs, which can be set to activate when specific conditions are detected, such as large vehicles exceeding a predefined speed. As well as offering standard vehicle detection, the latest version of the SLD4 ca
November 11, 2013 Read time: 2 mins
Siemens SLD4 loop Detector
An improved version of the SLD4 loop detector family is now available from 1134 Siemens.

The upgraded SLD4 is said to include sophisticated length-based classification with configurable outputs, which can be set to activate when specific conditions are detected, such as large vehicles exceeding a predefined speed.

As well as offering standard vehicle detection, the latest version of the SLD4 can also be used in specialised bus, tram and Light Rail Transport (LRT) schemes and other similar applications requiring excellent detection accuracy.

Designed for maximum reliability and using the latest inductive loop detection algorithms, the SLD4 detector family complements the company’s full range of detection options. These include Selective Vehicle Detection and above-ground detection of vehicles and pedestrians.

According to Keith Manston, 2768 Siemens Mobility, Traffic Solutions head of product management, the enhanced SLD4 still delivers the self-tuning and fully automatic set-up features of the existing SLD4, ensuring optimum and reliable performance without interference. This is said to represent a significant advantage over manual setting of frequency and sensitivity parameters which can often be a challenge, with failure to achieve this correctly causing detectors to ‘chatter’ or otherwise fail to operate.

SLD4 detectors are fully compliant with UK specification TR2512 and provide four separate detection channels with full solid-state outputs for maximum reliability. For challenging or special applications, a PC support tool enables many aspects of the detectors’ functions to be accessed for specific deployment scenarios.

The detectors may also be powered from either AC or DC supplies. Low power requirements, with operation possible at voltages as low as 10V DC, makes support within battery powered equipment a viable option where needed.

For more information on companies in this article

Related Content

  • Innovations for asphalt compaction
    June 15, 2012
    Asphalt compaction advances were unveiled from an array of manufacturers at the INTERMAT 2012 event - Mike Woof reports. With new emissions legislation being introduced, manufacturers are rolling out a range of new asphalt compaction models designed to meet the latest requirements. These include both large rollers for high-production highway operations and compact machines designed for the rental market and suited to urban applications, with the latter segment becoming particularly competitive at present.
  • Road milling advances from key players
    January 30, 2020
    Major manufacturers have introduced key innovations in milling, recycling and stabilisation
  • Bridge and tunnel concrete testing vital for longevity
    July 9, 2012
    Modern technology is making testing more efficient and reliable, increasing productivity and reducing costs, as Patrick Smith reports A few years ago, visual inspection of an 18-year-old bridge by ARRB in Australia identified considerable cracking in the precast, prestressed deck planks as well as in the cast in situ deck overlay. Laboratory examination indicated that the deck planks and the deck overlay were suffering from a strong case of alkali-aggregate reaction (AAR). Testing of concrete cores drilled
  • Caterpillar’s improved wheeled excavators being introduced
    July 5, 2016
    Caterpillar is introducing its improved M315F and M317F wheeled excavators. The firm claims that the machines offer agility on site, combined with reliable performance and low cost of operation. These compact radius wheeled excavators are in addition to the conventional radius F series models, while offering compact design. The firm says that the new machines offer high performance, power and stability, featuring large working envelopes, high breakout forces, and high lifting capacities. The firm has dev