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meshI/O

An iMesh-compatible add-on which facilitates the transmission of volt-free contacts over a wireless link.

Product Overview

meshI/O provides an easy way to connect multiple remote, digital devices where cabling is not readily available or ducting is prohibitvely expensive.

Typically used to connect upstream vehicle detectors to a junction signal controller, a single meshI/O unit will support up to 6 bi-directional digital inputs from inductive loops or other devices such as Traficam®, RADIX® magnetometers and Heimdall® detectors.    A second meshI/O unit installed at the controller end of the link converts the wireless transmission back to a digital output for presentation to a controller via screw terminals.  From the controller's perspective, the detector appears to be wired directly in.

Features and benefits

meshI/O is compatible with any detector which has relay or opto-isolated/switched outputs. It is fully bi-directional with a latency of just 3mS. In-built fault detection will automatically set a UTC controller's fault bit in the event of a dropped link.

Figure 1: Cabinet-grade and external-grade meshI/O units

meshI/O unit

meshI/O is available in two enclosure formats as shown in Figure 1 above:

An external-grade meshI/O unit built into an iMesh router powered by mains, dc or power-over-ethernet.

A cabinet-grade router where the meshI/O electronics is installed in a roadside cabinet.  In this arrangement the meshI/O unit can connect to either a cabinet-grade iMesh router installed alongside or via CAT5 cable to an external-grade iMesh router installed on a nearby pole.

A 'chocolate-block' type connector on the back of the cabinet-grade meshI/O unit provides quick and easy connections (see figure 2).

Figure 2: cabinet-grade meshI/O unit, front and rear views

meshI/O front
meshI/O front

Figure 3: External and cabinet-grade meshI/O units used for remote wireless detection. Click image to enlarge

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Specifications

For technical specifications please download a datasheet

Item

Specification

Internal version

Digital

Six bi-directional channels of digital (opto-isolated) inputs and outputs via screw terminals

Interfaces

10/100BASE-T autosensing (RJ-45)

MDI/MDI-X Auto-switching

Static IP or DHCP client

Physical

168 x 123 x 44 mm (depth x width x height)

0.7Kg

IP54

Power

12-24Vdc

Environmental

Operating temperature range -15°C to +70°C

External version

Digital

Six bi-directional channels of digital (opto-isolated) inputs and outputs via screw terminals

Physical

268 x 268 x 86 mm (width x depth x height) with integral 15dBi directional antenna

0.8Kg

IP67

Power

220Vac or Power over Ethernet

Environmental

Operating temperature range -15°C to +70°C

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IDT Ltd

Endurance House

Seventh Avenue

Team Valley

Gateshead

NE11 0EF

United Kingdom

+44 (0) 191 491 0800

Registered in England No. 2113231
Registered office: IDT Ltd, Endurance House, Seventh Avenue, Team Valley, Tyne & Wear, NE11 0EF, United Kingdom
Copyright 2021 Integrated Design Techniques Limited

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