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24.09.2021 0:07:03
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APAR AR236.B & AR232.B radio loggers

LED DRIVERS WITH BLUETOOTH INTERFACE
Highly advanced miniaturisation of wireless communication modules combined with a drop in their price is the reason why radio transmission modules can be found almost everywhere. Despite this, incorporating such a module into the LED power supply is a very innovative solution and makes it incredibly easy to create lighting systems.

By introducing a popular data transmission standard, such as Bluetooth, you can create functional, unique, easy to manage and control lighting systems for buildings, halls, rooms, etc.

The Bluetooth interface is a well-known feature of headsets. Another popular application of this standard is the emulation of the UART virtual serial port, which enables data transfer between devices, usually between a PC and a smartphone. By their nature, these were point-to-point connections, which made it impossible to control extensive networks of devices.

One of the major trends in the field of wireless communication devices are IoT networks, Industry 4.0 and smart buildings. These trends have also been recognised by the consortium that oversees Bluetooth development and the companies cooperating with it, so it is not surprising that the successive versions are increasingly focused not so much on audio devices as on energy-saving solutions powered by batteries or renewable energy sources employed in such systems.

Bluetooth and grid networks

As mentioned before, the Bluetooth interface was mainly focused on point-to-point connections. Although there was a profile to create local PAN (Personal Area Network) networks, it was very rarely used, as these were networks with rather low transmission speeds and limited capabilities.

Bluetooth version 4.0 opens up the possibility of creating grid networks. Their main advantage is their virtually unlimited range, as data can be transferred from the base device to the network node and then from node to node. A node in such a network is any device which, apart from data transfer, may also have some other functionality. It can, for example, have an additional function of a display, switch, sensor etc. *Grid networks are particularly suitable for communication within a smart building, as they offer almost unlimited coverage. Data can be transferred e.g. between floors or rooms without complex wiring. Another great advantage of grid networks is the ease of modification. What is important is that the Bluetooth communication protocol has always been well secured – it ensures device authentication and data encryption, which makes hacking into the network highly difficult.

Drivers with wireless communication

The engineers from MEAN WELL, a well-known manufacturer of power supply equipment, came up with a brilliant idea that responds ideally to the market trends. They decided to equip a LED driver with a Low Energy 4.0 Bluetooth programmable communication module. This opens up the way to control lighting with the use of popular devices such as smartphones, tablets, personal computers and microcomputers, for instance Raspberry Pi. The integration of the radio module directly into the driver has greatly simplified the lighting control system – control takes place in the driver itself, i.e. exactly where it is needed, with no additional intermediary devices required.

The new drivers by MEAN WELL were designed in cooperation with European company Casambi, which was established to develop and improve Bluetooth grid network solutions. Casambi's communication modules have been integrated in drivers from the LCM-25/40/60BLE series. The listed series of drivers offer the possibility to set the output current within the available power range (the number in the driver's name indicates the maximum load power), thanks to which variously connected LEDs can be easily powered using the same driver after the output current is set using the DIP switches. The available load current and voltage combinations are conveniently labelled on enclosures of the respective models (fig.1).

Fig.1. LCM-25BLE series driver.

  • Powering various configurations of LEDs. Output current/voltage modified using a DIP switch.
  • Plastic housing, class II design.
  • Built-in active PFC function.
  • Energy efficiency up to 90%.
  • Lighting dimmed by means of Bluetooth and a button.
  • Protection against short-circuit, overvoltage and overheating.
  • Surge immunity up to 2 kV (L-N).
  • MTBF > 50,000 hours.

The fact that the parameters of the output voltage and current can be changed is a great convenience for the system contractor and service technician. The former can reduce the number of various devices in the lighting system and in the warehouse, while the latter can enjoy significantly easier work because replacing a damaged power supply module with a new one or changing the configuration of powered LEDs only involves setting the load current without the need to use multiple modules for different connection variants. It is also important that both models can be successfully used for indoor as well as outdoor lighting systems.

Lighting control options

Casambi has developed a special application to control the LED driver. It allows you to group power supplies, set scenes, timers, correlations, etc. The drivers can also be operated using devices that are compatible with the communication protocol developed by Casambi, such as wall switches or light sensors, which can be used to extend the range of the network and to develop customised, smart lighting systems. This gives you the opportunity to create advanced lighting control algorithms to achieve a specific aesthetic effect or far-reaching energy savings.

In addition to the possibility of managing lighting using the application, the drivers also feature a freely programmable input connected to the neutral power supply cable by means of a pushbutton (Fig. 2). This input can be programmed in such a way that it controls not only the directly connected driver, but also a group or all of the drivers, allowing for switching on/off the lighting, a single luminaire, a group of luminaires, as well as a scene change.

Fig. 2. Connecting a programmable pushbutton

The variant of Low Energy 4.0 Bluetooth grid network developed by Casambi works in the self-organisation mode, which does not impose on the user or installer the need for complex configuration. In this mode, the network coverage (range) is maximised with the help of the devices operating in the network, and there is no need for additional gates or bridges. The Casambi application for controlling the operation of the drivers, and thus the light sources being supplied, can be connected to the cloud for data storage and status reporting.

Disover LED drivers with Bluetooth interface by MEAN WELL

Final remarks

When installing lighting systems for smart buildings, it is worth considering products by MEAN WELL. They not only enjoy a good reputation but are also practical and offer wide possibilities of configuration and application. Among MEAN WELL products you will find not only the described drivers from the LCM series, but also LED controllers without adjustable current or voltage, but with PWM output, which allows you to regulate colour temperature and light intensity. An example of such a solution is the PWM-120BLE model with 120W and output voltage (depending on model) from 12 to 24V. Wide range of input voltage (90...305V AC) allows the controller to be used in almost any lighting system. The PWM-120BLE has a built-in Casambi BLE 4.0 module, which enables remote communication and control of the lighting.

It is worth mentioning that among products by MEAN WELL you can also find LED controllers without wireless interface.

Discover the full offer of LED drivers by LED MEAN WELL

 

www.tme.eu
2021020401 / 04.02.2021 / Various / Transfer Multisort Elektronik Sp. z o.o. /

ARDUINO – COMMUNICATION USING THE ETHERNET NETWORK
For many years, the creation of extensive computer networks has ceased to serve only for connecting computers.

Wireless communication in IoT systems using Arduino MKR modules
One of the biggest problems currently facing the Internet of Things (IoT) devices market is its high fragmentation. The multitude of devices and communication protocols makes it very difficult to build a uniform and functional system if you decide to use components from different manufacturers.

VELCRO® PRODUCTS NOW AVAILABLE AT TME
The TME offer has been expanded by products of the world-famous Velcro® brand. Velcro® was founded in 1951 and quickly became a dominant supplier of fastening solutions in a wide variety of industries. The company's offices are located in America, Asia, Europe, and Africa. The first Velcro® factory, opened in Manchester in 1957, is still there.

INFRARED LEDS IN SMD PACKAGES
The TME catalogue includes a wide range of infrared LEDs. The noticeable market trend in favour of the miniaturisation of devices forces manufacturers to search for solutions combining high power (ca. 1W) with a small size of SMD components. For this reason, today we present one of such solutions: PK2S-series IR LEDs, which are the smallest SMD power diodes offered by ProLight.

NKK SWITCHES - QUALITY AND FUNCTIONALITY
Switches are electromechanical components that control the current flow by connecting and disconnecting the electrical circuit. Even the popularity of touch screens has not changed the fact that it is still the leading method of user-device interaction.

KEMET FERRITE PLATES
Today, electric vehicles are becoming increasingly popular. Electric motors are gradually replacing traditional internal combustion engines, and in the future we will see more and more electric vehicles on the streets.

ORNO - OR-WAT-419 Power Meter [electricity consumption calculator]
In brief, wattmeters tend to operate by measuring continuously instantaneous voltage (volts) and current (amperes) to give accurate information of energy units used, expressed usually in KWh.

UNIVERSAL AND RAILWAY DC/DC CONVERTERS
Traco Power is one of the leading manufacturers of DC/DC converters. Their DC/DC converters are designed for the most demanding industry sectors, including the railway industry. There are numerous railway industry safety standards. They concern not only the mechanics of rail vehicles, but also many design aspects. Appropriate certification is required, among others, for electric train components.

ETHERLINE® LAN CAT.6A PATCHCORDS BY LAPP
TME’s offer now includes ETHERLINE® LAN CAT.6A patchcords by LAPP. The series is designed for applications where reliability and safety are of utmost importance. With high resistance to electromagnetic interference and harsh environmental conditions, the products are intended for demanding industrial and commercial applications. The patchcords are designed with user safety in mind, which is confirmed by the renowned UL (Underwriters Laboratories) certification.

PCB – GET READY FOR WORK WITH A PRINTED-CIRCUIT BOARD
Printed-circuit boards (PCB) can be found in each electronic device. They accommodate all necessary elements. They are connected via copper tracks protected from external conditions (such as oxidation) by a “solder mask”. Printed-circuit boards can be made of various materials, although the most commonly used solution is the PCB laminate comprising fibreglass and cured with epoxy resin. Such boards can be cut to various shapes and sizes.

VIGO SYSTEM INFRARED DETECTORS
In the broad field of electronics, infrared radiation (or "light") sensors find a number of well-established applications. This technology is the backbone of wireless communication systems, even those as trivial as TV remote controls. It is also the basis of operation of pyrometers and thermal imaging cameras. Meanwhile, precision infrared detectors are widely used in a variety of narrow applications.

TME US, LLC. - TME'S FIRST US OFFICE IS NOW AVAILABLE TO CUSTOMERS.
Did you know that the TME Group created another (already eleventh!) subsidiary? We are pleased to announce that TME US, LLC has already started operations in Atlanta. It is the first subsidiary of TME in the United States. Our American dream is about to come true!

Company of the week

Pico Technology

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ENERGETAB 2021 Poland, Bielsko Biala, 14.9.-16.9.2021


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TDK Corporation


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STMicroelectronics


Texas Instruments


Molex, LLC


ON Semiconductor


NeoPhotonics


Murata Manufacturing Co.,


ICP Deutschland GmbH


Yamaichi Electronics USA Inc.



Calendary
BATTERY JAPAN, Osaka, 29.9.-1.10.2021
SPS 2021 - Nuremberg, 23.–25.11.2021
DistribuTECH, 25.1.-27.1.2022, Dallas, TX
DistribuTECH, 7.2.-9.2.2023, San Diego, CA
DistribuTECH, 23.1.-25.1.2024, Indianapolis, IN
DistribuTECH, 11.2.-13.2.2025, Dallas, TX

Interesting video
The ISS Design Challenge ...

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Mouser Electronics Warehouse Tour with Grant Imahara


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