This question came in this morning by comment to a previous post. We’ve been talking of the Internet-of-Things for years, but we forgot to inform our engineers how it will work. The website of the engineer who commented is showing medical applications. I am able to connect all their equipment to my WIFI network easily. […]
Is EN 300 328 V1.8.1 the end of ZigBee, Z-Wave and all other radio protocols riding on 802.15.4? Does it mean, that we all will deinstall our 804.15.4 based ISM devices? IEEE 802.15.4 divides the 2.4 GHz band into 15 channels. ETSI Draft 1.8.1 requires that a radio system must use at least 15 channels. […]
Features of Googles Radio protocol 868 / 915 MHz instead of 2400 MHz Frequency hopping instead of Direct Sequence Spread Spectrum like 802.15.4 Licence free 6LoWPAN instead of ZigBee Open source instead of proprietary Advantage of GoogleÂ´s Radio protocol Better coverage in buildings End-to-end security if they use IPsec Proven standard IPv6 plus 6LoWPAN No […]
Google promised to release open source code for a 868/915 MHz wireless mesh protocol. It will be a low cost alternative to Zigbee or Z-Wave. It shall require less than 16 Kbytes RAM and 32 Kbytes flash. The target of the bill of material is 30 percent less than Zigbee Pro. The Google protocol will […]
Last week I proposed to one of my project customers to use an ANTplus (ANT+) powered smart phone as remote control for their machines. As we all know, there is no Bluetooth LE available. The other reason was that the costs for qualification with ANTplus are much lower than with Bluetooth LE. Even if we […]
ANT is a low-power wireless networking protocol. It has the same audience like Bluetooth Low Energy. In contrast to Bluetooth LE the ANT protocol allows full mesh network topology. Furtermore it is already widespread in sports and healthcare. The ANT alliance has more than 300 members (e.g. Adidas, Garmin or Timex). The member no. 300 was the manufacturer of phones, Sony Ericsson.
The high sensitivity provides a range of up to 2 km. The wireless M-Bus module comes with LGA mounting technology. With its ultra-low power (< 1 ÂµA in standby) it supports a long battery life and less maintenance requirements. This wireless M-Bus module comes with interfaces like RS232 and helps with digital / analogue inputs and outputs as well.
M-Bus (Meter-Bus) is a European Standard for the remote reading of gas, water or electricity meters. M-Bus is also usable for other types of consumption meters.
The M-Bus interface is made for communication on two wires, making it very cost effective. This protocol exists with several physical layers such as paired wires, optical fibber or radio link. The radio variant of M-Bus is called Wireless M-Bus and is specified in EN 13757-4. It is dedicated to the European ISM frequency band at 868MHz. It means that modules embedding the Wireless M-bus stack must comply with the general SRD standard EN 300-220.
Today I would like to show and to talk about a new Linux based application for wireless M2M. The PCB is already in use in several projects. Based on its enclosure it can be used as a final product for end users. It supports a lot of interfaces like SD card / MMC card, GPIO Pins , AD / DA converter, UARTs, USB Device, USB Host, I2C, SPI and JTAG. At GPIO you will find PMW (Pulse Wide Modulation), counters and other intelligent channels.
Summary costs of licences, membership, conformance tests, CE, FCC and further Click on the picture to enlarge