{"id":19437,"date":"2021-06-03T09:00:00","date_gmt":"2021-06-03T08:00:00","guid":{"rendered":"https:\/\/www.engineernewsnetwork.com\/blog\/?p=19437"},"modified":"2021-06-03T09:48:50","modified_gmt":"2021-06-03T08:48:50","slug":"measuring-strain-using-low-cost-bluetooth-technology","status":"publish","type":"post","link":"https:\/\/www.engineernewsnetwork.com\/blog\/measuring-strain-using-low-cost-bluetooth-technology\/","title":{"rendered":"Measuring strain using low-cost Bluetooth technology"},"content":{"rendered":"\n

Matt Nicholas explains how a Bluetooth strain transmitter offers a good balance between wireless functionality and cost<\/strong><\/p>\n\n\n\n

In measuring strain, engineers often feel like they\u2019re stuck between a rock and a hard place when it comes to wireless data acquisition, with wired setups adding complexity and some fully-fledged cloud setups being time or cost prohibitive.<\/p>\n\n\n\n

Strain bridge measurement is found in a wide range of industrial sensors, typically load cells, to measure forces like tension and compression, or in other sensors using Wheatstone bridge circuits, such as pressure or torque transducers. <\/p>\n\n\n\n

Before wireless technologies became popular, any time an engineer needed to take a load cell reading, they would rely on a physical connection to the load cell. This would require the operator to directly plug in their hand terminal to the load cell to take a reading, or use a human machine interface (HMI) to display the data from multiple sensors. <\/p>\n\n\n\n

This setup is fine if you\u2019re measuring the reading from a single load cell, but add a few units and the complexity begins to add up. The cabling and installation costs of wiring such a system can often end up being more than the load-cells themselves, and it takes time before you can get up and running.<\/p>\n\n\n\n

The options for wireless transmission are varied, from low power devices that use the 2.4GHz transmission format, to devices that use mesh or star network topologies. These networks are more sophisticated, self-healing and work at greater range than their non-mesh counterparts \u2014 but this is at the expense of being power hungry, lower resolution and more complex to configure.<\/p>\n\n\n\n

And then there are fully fledged, cloud-integrated IoT platforms, which may be overkill if all you\u2019re doing is periodically measuring the load on a container as bulk material is decanted ahead of it being processed. This on-demand, session-based approach means the operator only takes a reading when they need it rather than being inundated with an ongoing live feed from their system. <\/p>\n\n\n\n

Much has been said about big-data overload, so the value of getting just the data you need, when you need it, can\u2019t be overstated. While IoT platforms have their merits for accessing information remotely, in real-time and sharing it automatically with people across a business, sometimes all you need is a quick and easy way of taking a reading using devices you already have available.<\/p>\n\n\n\n

This is why Mantracourt developed the B24 Bluetooth Strain Transmitter. We chose Bluetooth 4.0 Low Energy because it is much more efficient for portable, battery-powered, use \u2014 the transmitter can run for 10 months on a pair of single AA batteries. Secondly, it can easily be used with your existing devices \u2014 most phones and tablets already have Bluetooth built in. <\/p>\n\n\n\n

The B24 is a small module that comes in an IP67-rated enclosure, or as a board-only option to be integrated as required. The transmitter is easily wired directly into the load cell using field terminals and works with sensors across a range of sensitivities, from a few grams all the way to a few hundred tonnes. The result is a versatile transmitter that can be used anywhere there\u2019s a load cell, or strain bridge input, whether it\u2019s in automotive, industrial, agriculture or more.<\/p>\n\n\n\n

One key feature of the B24 is the ability for multiple transmission. By tapping into the advertising data channels of Bluetooth Low Energy, it allows multiple transmitters to transmit to one device, and one transmitter to be viewed by multiple devices. This one-to-one, one-to-many, many-to-one and many-to-many capability really opens up the access to data.<\/p>\n\n\n\n

However, the hardware technology is only one-half of the story. Being able to use your phone to take a reading is only valuable if the app offers the same kind of flexibility and customisation as a dedicated HMI or control system. To achieve this, we have developed an app for both iOS and Android that features dashboards that can be customised to your own preferences.<\/p>\n\n\n\n

So, what implications does this have for industry? These breakthroughs in Bluetooth technology and app customisation mean that engineers have more flexible options available to them, with Bluetooth offering a cost-effective option in between \u2014 proving that strain measurement doesn\u2019t have to be an expensive undertaking.<\/p>\n\n\n\n

Matt Nicholas is product design manager at sensor and signal conditioning specialist Mantracourt<\/a><\/strong>. <\/p>\n","protected":false},"excerpt":{"rendered":"

Matt Nicholas explains how a Bluetooth strain transmitter offers a good balance between wireless functionality and cost In measuring strain, engineers often feel like they\u2019re stuck between a rock and a hard place when it comes to wireless data acquisition, with wired setups adding complexity and some fully-fledged cloud setups being time or cost prohibitive. …<\/p>\n","protected":false},"author":1,"featured_media":19438,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[107],"tags":[9172],"class_list":["post-19437","post","type-post","status-publish","format-standard","has-post-thumbnail","","category-power","tag-mantracourt"],"yoast_head":"\nMeasuring strain using low-cost Bluetooth technology - Engineer News Network<\/title>\n<meta name=\"description\" content=\"Matt Nicholas explains how the company\u2019s B24 Bluetooth strain transmitter offers a good balance between wireless functionality and cost\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.engineernewsnetwork.com\/blog\/measuring-strain-using-low-cost-bluetooth-technology\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Measuring strain using low-cost Bluetooth technology - 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