Plug-in modules

DSP10    single channel detector

DSP10 is a plug in loop detector for standard function with 2 form C outputs. Available in three voltages, US standard 60Hz mains, European 50Hz mains, and the universal low voltage. Wide adjustment ensures DSP10 can be set to any existing road loop as a drop in replacement. 

DSP10    features

DSP can be set for conventional loops or Diablo's 'Miniloop' single point detector on DIP 8. There are 10 sensitivity settings on a rotary control. DSP10 is shipped 'Fail safe' but can be changed inside.

There are two form C relays on the same channel. Relay A is set for presence. Relay B is programmable for 4 functions, including pulse on arrival on the loop and pulse on leaving the loop.

Although frequency is a function of road loop geometry, there are 4 broad frequency settings to avoid cross interference with neighbouring loops.

Sensitivity boost is another standard function for high bed vehicles. All inputs and outputs are isolated from supply and each other. 

PPM means parts per million. 4800 PPM is the same as 0.47%

DSP10    DIP functions

DIP 1 is a filter for brief activation of the loop. It must be activated for at least 2 secs before the relay switches, so excluding fast transit or spurrious activation.

DIP 2&3 is used to extend a presence detection. For eaxample, it can prevent a barrier arm decending between a car and a trailer. 

DIP 4  sensitivity boost is a hysterisis function. While a vehicle is detected, sensitivity is increased. The theshold for un-detect is lower. It is used for lorries whose tractor has a high mass, but the trailer has a high bed.

DIP 5&6 set relay B function. Options include a loop fail output.  Relay A will also close if a loop fault is detected in the default 'failsafe' mode. 

DIP 7 sets ambient creep. As conditions change a detector adjusts over time. Ambient ferrous objects will be nulled out over 30 mins when DIP7 is OFF, or over several days when DIP 7 is ON.

DIP 9&10 set 4 frequency options, though the exact frequency is set by the physical layout of the loop.

DSP21    dual detector for parking

The DSP-21 Series Detector was developed for parking industry, where accurate vehicle counting is required. DSP21 has the dual inductive loops necessary to detect vehicle direction.

The DSP-21 Series Detector was designed to retrofit into existing locations that may require a detector upgrade. This detector's algorithms are proven offer substancial improvement in count accuracy leading to revenue gains. 

Available with N/O or N/C or opto-isolated solid state outputs. 

DSP21    features

Two loops can detect travel direction by noting which loop is passed over first. In directional mode, the first loop to be crossed gives a pulse, but not the second. 

DSP21 can operate in one of four selectable modes selected by DIP 1&2. The channels can act independantly, or be used for directional sensing. The two channel directional counting mode is the real differentiator from other dual detectors. This detector is designed to accurately count passenger vehicles.

The detector includes a count testing mode that forces a channel to output a known number of counts every minute. This can be very useful during system start-up and troubleshooting.

The detector analyzes vehicles to improve itself and adjusts for changes in vehicle traffic. Alternative count modes allow the installer to optimise for counting situations.

Available with N/O or N/C or solid state outputs. The N/O version is most popular for counting application.

DSP21    switch functions

The functions are set on a 12 way DIP switch.

Frequency is set by the physical layout of the loop, but it is best to set one loop to high and the other to low. There are 4 sensitivity settings per channel, set on 2 pairs of DIP switches.  Each channel can be set for presence, or a single 150ms pulse output. 

Sensitivity boost (DIP4) is a hysterisis function that applies to both channels. When a vehicle is detected the sensitivity is increased so that the theshold for un-detect is lower. Useful for lorries or cars towing.

DIP3 sets fail mode. The detector can sense a road loop failure. In fail safe mode, on a fault, the relay contact is closed. In fail secure mode, on a fault, the relay contact is opened.

2 loops can detect travel direction by noting which loop is passed over first. In directional mode, the 1st loop to be crossed gives a pulse, but not the 2nd.