Press Release

New Multi-channel Wireless Sensor System for Industrial Monitoring from Deeter Electronics

 

Up to eight analogue sensors and up to thirty two switched inputs

2.4 GHz Frequency band High Power Radio Transceiver

Simple and reliable operation

 

August 2010 – Deeter Electronics announce the latest addition to their ground breaking Wireless Sensor System for industrial measurement and control. The market leading international company, specialists in the design, development and manufacture of electronic sensors and control systems, has introduced a new multi-channel Wireless Sensor System for more complex installations. The new system permits the monitoring of greater numbers of remote devices than was previously possible and can display the state of up to eight analogue sensors and up to thirty two switched inputs.

 

The Deeter Multi-channel Wireless Sensor System is connected from the Base Station to a personal computer by an RS485 to USB adaptor. On the host computer Deeter Data Viewer Software displays the outputs of up to eight analogue inputs and up to thirty two switched inputs from as many as eight sensor nodes which can be multi-input Deeter Wireless Senders or Deeter Wireless LVCS-RF Liquid Vertical Continuous Sensors.

 

The Deeter Data Viewer application runs under Windows™ and provides a means of viewing the outputs from multiple sensor nodes by interpreting the data stream from the Base Station’s serial communications port. The Data Viewer visualises the performance of the Base Station and it is the best way to utilise all the features of the Deeter Wireless Sensor System. It permits the user to view the inputs from multiple sensor nodes (Deeter Wireless Senders or LVCS-RF), change the settings in the Base Station and network, record the sensor data-stream, monitor and record network events and monitor remote sensor battery voltages.

 

Up to eight Deeter Wireless Senders can be used per Multi-Channel Base Station, each take the input from either a resistive potentiometric sensor or a 4-20mA device, and up to four switched inputs. This gives a total of up to eight analogue inputs and up to thirty two switched inputs. Deeter LVCS-RF (Liquid Vertical Continuous Sensors RF) can also be used as sensor nodes. Up to eight LVCS-RF sensors can be used per Multi-channel Wireless Base Station. A combination of Senders and LVCS-RF can be used up to the maximum of eight sensor nodes.

 

The simple-to-use Deeter Base Station receives the data from remote wireless devices and acts as the coordinator for an IEEE 802.15.4 wireless sensor network. It operates on one of 16 radio frequency channels available in the 2.4GHz ISM band. The high power transceiver can achieve a range of greater than 1km, subject to local environmental factors. The internationally recognised IEEE 802.15.4 protocol allows several wireless sensor networks to share the same wireless spectrum without interference.

 

To increase the range of the Deeter Wireless Sensor System or overcome adverse environmental conditions one or a number of Deeter Routers may be added to the wireless network. The use of multiple Deeter Routers creates a highly reliable self-healing wireless mesh network.

 

Peter Whiteaker, Managing Director of Deeter Electronics, comments;”The launch of our Wireless Sensor System has been met with great interest. It provides a highly cost effective wireless monitoring solution for a large number of smaller industrial and agricultural applications. We have now received a number of customer requests for a greater number of input channels and we are very pleased to introduce our new multi-channel system. As we design and manufacture our products in the UK we are able to offer a rapid response to our customer’s requirements.”

Deeter Wireless Sensor Network products are housed in rugged ABS enclosures with external antennas. Cable glands are provided for power input and signal outputs and they come complete with external, wall mounted, universal AC input power supplies.

 

The Deeter Electronics product range includes level sensors, industrial weighing equipment, reed and proximity switches, security switches, termination assemblies, litz and magnetic wire and solar power systems. For more information on the Deeter Electronics range of wireless sensing products call +44 (0)1494 566046 or visit www.deeter.co.uk

-ends-

Editor’s note: The attached photograph shows the new Multi-Channel Wireless Sensor System available from Deeter Electronics.

 

About Deeter Group:

The Deeter Group is a privately owned group of companies first established in the UK in 1982 and set up to provide electronic services and products to industry. The Group comprises Deeter Engineering Services Ltd, Deeter Weighing Systems, Deeter Electronics Ltd, Deeter Electronics Inc and Deeter International Ltd. During its existence it has developed from a small local supplier to a Group of companies which trade throughout the world. Deeter now lists among its customers many large international companies and has justly earned its reputation as a supplier of quality products and services.

 

Deeter Electronics was established in 1991 as a distributor of specialist electronic products. Deeter Electronics now designs and manufactures sensor and wireless products in the UK and is a distributor for a number of market leading component Brands. Deeter provides a wide range of instrumentation products to customers in the UK, mainland Europe and the USA.

 

 

Contact:

The Deeter Electronics Ltd.
Deeter House
Valley Road
Hughenden Valley
HP14 4LW

T: +44 (0)1494 566046
F: +44 (0)1494 563961

E: [email protected]

W: www.deeter.co.uk

 

Press Release

Deeter Electronics adds “Router” to Extend Range of Industrial Wireless Sensor System

 

Enables high reliability wireless mesh operation

2.4 GHz Frequency band High Power Radio Transceiver

 

July 2010Deeter Electronics, a market leading international company in the design, development and manufacture of electronic sensors and control systems, announces the introduction of a Wireless Router to increase the range and reliability of their recently launched Deeter Wireless Sensor System for industrial measurement and control.

 

The new Wireless Router may be added to a Deeter Wireless Sensor System to significantly increase the range of the wireless communication between sensors and a Base Station. Deeter Wireless Routers may also be used to improve communications reliability.

 

A basic Deeter Wireless Sensor System is comprised of a Base Station and a remote sensor node, either a general purpose Deeter Sender or self contained Liquid Vertical Continuous Sensor (LVCS-RF) probe. The maximum range between these, in ideal conditions, can exceed 1Km. However in many industrial environments the signal will be attenuated by obstructions and fading may result from multiple signal paths caused by reflections. These effects reduce the quality of the communications link and the achievable range. Adding a Deeter Wireless Router to the system extends the effective range and improves signal quality.

 

In use the Wireless Router should be positioned midway between the remote probe or sender and Base Station, possibly offset in order to avoid obstructions that might cause interference. Up to four Routers may be used in a single system with data being retransmitted a number of times before reaching the Base Station. This will greatly extend the transmission range and reliability.

 

The use of multiple Routers allows the wireless network to automatically establish the most effective signal route between probe and Base Station at turn-on. Should this signal path become interrupted for any reason the Router network will re-establish the most efficient and reliable signal path. In this mode the Routers are operating as a self-healing wireless mesh network offering maximum signal reliability.

 

The Deeter Wireless Router must be permanently powered-up to relay messages. Any message sent from a base station to a “sleeping” battery powered remote node or sensor will wait at the last Router until the sensor wakes up and polls for data.

 

The Deeter Wireless Sensor system uses the internationally recognised IEEE 802.15.4 protocol in the 2.4GHz ISM radio band allowing users to install approved devices with no licensing requirements. It operates on one of 16 radio frequency channels available allowing several wireless sensor networks to share the same wireless spectrum without interference.

 

The Deeter Wireless Router is housed in an ABS enclosure with an external antenna. Power is provided by an external 5VDC mains wall mounted adapter connected via cable glands. An optional 3m extension lead and bracket are available for mounting the antenna in a position more favourable to wireless communication should the need arise.

 

Peter Whiteaker, Managing Director of Deeter Electronics, comments; ”Our new Wireless Router is the final piece in our class leading wireless sensor system. Adding one or a number of Routers to a measurement system not only extends the communications range but can greatly improve the reliability of the transmitted data signal. We can now offer our customers a complete, simple to operate, low cost wireless sensor system which provides a very viable alternative to conventional control and instrumentation systems.”

 

The Deeter Group product range includes level sensors, industrial weighing equipment, reed and proximity switches, security switches, termination assemblies, litz and magnetic wire and solar power systems. For more information on the Deeter Electronics range of wireless sensing products call +44 (0)1494 566046 or visit www.deeter.co.uk

About Deeter Group:

The Deeter Group is a privately owned group of companies first established in the UK in 1982 and set up to provide electronic services and products to industry. The Group comprises Deeter Engineering Services Ltd, Deeter Weighing Systems, Deeter Electronics Ltd, Deeter Electronics Inc and Deeter International Ltd. During its existence it has developed from a small local supplier to a Group of companies which trade throughout the world. Deeter now lists among its customers many large international companies and has justly earned its reputation as a supplier of quality products and services.

 

Deeter Electronics was established in 1991 as a distributor of specialist electronic products. It now supplies a range of products to customers in the UK, mainland Europe and the USA. In addition to some sensor products manufactured within the Deeter Group, Deeter Electronics is now either an agent or distributor for a number of market leading component Brands.

 

Contact:

Deeter Electronics Ltd
Deeter House
Valley Road
Hughenden Valley
HP14 4LW

T: +44 (0)1494 566046
F: +44 (0)1494 563961

E: [email protected]

W: www.deeter.co.uk

 

 

Wireless Technology in Industrial Measurement and Process Control

Introduction

In all manufacturing industries there is a need to collect information for measurement and control of processes and material management. Transducers of many kinds may be installed on machinery, storage tanks, materials and even finished products.

 

The one common factor in all these applications is the need to return data to a central control or monitoring system. Generally this is accomplished by sending data signals along a network of cables. These may be dedicated to the process data or the signals may be multiplexed over an Ethernet system via suitable network adapters.

 

There are a number of common problems associated with a cabled solution in an industrial environment, especially in factories and larger industrial facilities where multiple buildings may involved. Cables are expensive and often difficult to install. In addition to the cost of the cable itself, installation over large industrial spaces, often including high ceilings, spans over doors or roads increase the labour costs, create their own health and safety hazards and can affect the continuous smooth operation of plant equipment during installation. In addition to the high costs of installing cabled control systems, maintaining their reliable operation can be very difficult as they are prone to damage from vehicles, building and maintenance works and occasionally vandalism.

 

Wireless connectivity would seem an obvious alternative to all the downsides of cabled control systems. However the major suppliers of wireless process control systems tend to offer costly, proprietary solutions aimed at large scale production facilities. The high costs and buy-in to complex single source solutions has, in the main, excluded their take-up by small to medium manufacturing, industrial and even agricultural users.

 

Wireless Sensor Systems

The recent advent of compact, low cost, high reliability, license free short range wireless devices enables a new, low cost approach, to wireless connectivity for industrial control systems. Instrumentation companies, such as Deeter Electronics, are now able to integrate wireless communication into sensors and industrial receivers which can transform industrial control and measuring systems. These emerging industrial wireless sensor communication systems greatly reduce the cost and time of installation, increasing convenience and reliability and enable simple relocation of sensors should factory layout change. Some types of wireless probes are battery powered removing an additional layer of installation complexity by not having to provide mains power in remote locations which would be required for conventional measuring instruments.

 

A typical wireless sensor system will be based on a wireless enabled probe communicating directly with a “base station” receiver. In addition to wireless enabled probes other sensor inputs such as analogue probes, 4-20mA sensors, float sensors or other switch types can be interfaced to a wireless sensor system via a suitable “sender” adapter which transmits the sensor signals over the wireless link to the base station receiver.

 

A wireless sensor system may also include a number of wireless routers to form a wireless ‘mesh’ network. This improves the reliability of the wireless signal by providing multiple signal paths and allows signals to be automatically re-routed around any broken links in the mesh creating a built-in self-healing capability to further ensure communications reliability.

 

RF Communications

A modern wireless sensor system will be based on the latest very reliable high power RF transceiver modules combined with a rugged external antenna to achieve the best possible wireless communication range. Range can be further extended by adding one or more wireless “routers” which receive and re-transmit the signal with increased gain. A “base station” acts as the coordinator for the wireless network and will provide a range of outputs for integration into control or monitoring equipment. Typical outputs would include a 4-to-20mA current loop driver, a serial communications output via RS232, RS485 or USB and open-collector transistors for relay operation etc. The complete system will operate in the 2.4GHz ISM (Instrumentation Scientific and Medical) frequency band. This allows the system to be used world-wide without requiring a site radio operating licence. Local regulations may restrict the maximum RF transmit power and manufacturers such as Deeter provide different variants of the Wireless System devices for the USA, Canadian and European markets to satisfy these constraints. The IEEE 802.15.4 protocol, as used in the Deeter Wireless Sensor System, allows several networks to share the same frequency without interfering with each other. The protocol uses sophisticated techniques to ensure good communications using very low power signalling. Once the system is installed it will operate reliably for extended periods without any further intervention.

 

Wireless Range

At maximum transmission power, depending on country of use, the distance between sensor node and base station may be up to 4km in an ideal, open field installation. For operation in Europe, regulations restrict the maximum transmission power and a range of up to 1000m may be possible. However, in most practical environments the radio signal will be attenuated by obstructions and by multi-path fading caused by reflections. To improve range, a clearer signal path can often be achieved by increasing the height of the antenna.

 

Cost and applications

With the cost of a simple single wireless sensor and base station system being less than £500 it’s easy to see what an attractive proposition a wireless solution can be. Simple plug-and-play installation, ease of relocation, removal of costly and hazardous cabling make a wireless sensor system a welcome solution for control engineers in industrial and manufacturing industries such as food and beverages, cooling systems and agriculture.

 

The Deeter Group has been providing electronic services to industry since 1982. With the formation of Deeter Electronics in 1991 the company manufactures its wireless sensor system in the UK and is a major international supplier of control and instrumentation systems, including electronic sensors, industrial weighing equipment, reed and proximity switches, security switches, termination assemblies and other products and services to manufacturing industry.

 

Contact:

The Deeter Group
Deeter House
Valley Road
Hughenden Valley
HP14 4LW

T: +44 (0)1494 566046
F: +44 (0)1494 563961

E: [email protected]

W: www.deeter.co.uk