Instrumentation • Electronics
of 25.6 per cent. The analysts believe that this growth will result from M2M communications being used in millions of motor vehicles, utility meters, point-of-sale terminals, security alarms and other machines. For manufactures that want an easy route to integrating
M2M communications within their products, Eseye offers a system based around SIM (subscriber identity module) cards using GSM technology. Eseye emphasises that it offers a complete end-to-end service, though customers can choose to make use of just the elements of the service that they need. This is in contrast to companies that simply issue SIM cards. As part of the service, Eseye can help in the early stages
of a project by, for example, minimising the data that is sent, which reduces the network charges payable by the customer. For products manufactured in small volumes, such as factory automation, a standard modem module can be used, together with a conventional SIM card. However, for higher-volume goods, Eseye can develop
custom embedded modules. Another important aspect of the service provided by Eseye
is that the company takes care of which telecommunications network is used. Eseye says it works with all the major networks worldwide so can ensure that customers get the most cost-effective service. Furthermore, a local network is always used, regardless of where in the world the product is located, which can be as much as two orders of magnitude cheaper than paying roaming charges for data. On products that only send data occasionally, Eseye can
configure the system so that the SIM remains dormant and incurs no network charges. However, if the product’s self- diagnostic system detects a fault, or another pre-defined event occurs, the SIM is enabled and granted temporary access to the network for 24 hours so that service engineers can interrogate the product, collect more data, perform further tests and, if need be, reconfigure settings, upload software updates or take other appropriate action. As far as the engineer is concerned, it is no different to communicating with the machine via an IP address. As part of its end-to-end service, Eseye can also provide
custom PDF reporting and/or web-based interfaces so customers can view data received or interact with the M2M- enabled products via a web browser.
Electric vehicles
Eseye operates in a variety of different markets but, earlier in 2011, it joined with Liberty Electric Vehicles, which specialises in electric vehicle technologies and vehicles, to develop M2M systems for electric vehicles. Drivers want traffic news and updates to satellite navigation systems; manufacturers want access to vehicle performance and diagnostic data; and passengers want Wi-Fi access for email and the internet. Drivers of electric vehicles also need to know the charging status or they may want to defrost the vehicle’s windows or preheat the seats while the vehicle is still attached to the charging point. And they may want to do all this from a remote computer or mobile device. Eseye has therefore established a strategic relationship with Liberty Electric Vehicles to develop features for the electric car of the future, making use of M2M connectivity (Fig. 1). Meanwhile, the Nissan Leaf, which is described as the
world’s first mass-produced, 100 per cent electric, zero-emission car, is equipped with a Carwings intelligent transport (IT) system that connects the car to Nissan’s Carwings Data Centre. This system, implemented by Telenor Connexion, gives owners access to data at all times, whether they are in the car or elsewhere (Fig. 2). Features on the Nissan Carwings system that were claimed to be unique when it was introduced at the end of 2010 include electric vehicle battery status monitoring, usage history and remote control of the air conditioning. Conventional SIM cards
are often the most appropriate way to implement M2M on a product but, where space and weight are critical, a surface- mount chip SIM can be better (Fig. 3). Companies such as Giesecke & Devrient (G&D) manufacture both SIM cards and chip SIMs, and G&D’s M2M portfolio also includes highly durable and long-lasting SIM cards that are suitable for use in environments that are more harsh than those in which mobile telephones are expected to operate; for example, G&D offers SIM cards that will operate in temperatures ranging from -40 to 105° C. Other areas where
M2M is being implemented now extend from medical equipment to industrial robots, and from white goods to monitoring of food in transit. Data security is assured, as illustrated by the fact that banking systems are already using M2M technology. Although adding M2M increases product costs slightly, many manufacturers are finding that the benefits to themselves and their customers are making the investment very attractive. l
Fig. 2. The Nissan Leaf electric car has an M2M system from Telenor Connexion that gives owners access to data at all times, whether they are in the car or elsewhere.
Fig. 3. Surface-mount chip SIMs such as this device from Giesecke & Devrient enable M2M systems to be deployed in applications where save space and weight must be saved.
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