noise sensor Articles

  • Nanomaterial resistive sensors: noise, power, and circuit interfaces

    Nanoscale materials such as carbon nanotubes and silicon nanowires offer the exciting prospect of enabling low cost, low power, highly sensitive detectors for a wide variety of chemical and biological materials. The potential of these materials in sensing applications has been demonstrated by researchers around the world. However, several challenges remain to transition this technology from ...


    By Inderscience Publishers

  • Utilising the Strengths of Different Sound Sensor Networks in Smart City Noise Management

    City noise management involves a variety of disciplines such as planning, mapping, action plans, policing, complaint management, abatement and public awareness. With the wide availability of mobile broadband internet access coupled with low cost noise sensors, many authorities and researchers are eager to use sound sensor networks for these tasks. A sensor network can be defined as a group of ...

  • MK:427 4-20mA Noise Sensor Outdoor Microphone example application case study

    Project Summary A large industrial site required continuous noise monitoring adding to their existing SCADA system. The requirement was for a robust, weather proof solution that gave a continuous 4-20mA output signal with accuracy to Class 1 and with the capability of remote calibration. A number of MK:427 outdoor microphones were integrated quickly into the system to provide ...


    By Cirrus Environmental

  • Where to use Outdoor Noise Monitoring Equipment?

    Noise monitoring equipment is required for environmental noise applications that need to be monitored over a period of time and where a hand-held sound level meter taking on the spot noise measurements would not be suitable. Noise Monitoring Equipment from Cirrus Environmental The Invictus range can ...


    By Cirrus Environmental

  • Controlling the timing chain noise in diesel engines

    Timing drive by chain is commonly used in passenger cars especially in diesel engines with double overhead camshafts owing to their numerous advantages compared with belt drive systems. However, one of the important subjects to take into account is the timing chain noise, so-called "meshing noise" that can be perceived by the driver. The manufacturer's efforts to reduce it, are focused ...


    By Inderscience Publishers

  • Controlling the turbocharger whistling noise in diesel engines

    Turbochargers are now commonly used in passenger cars especially in application with diesel engines because of their numerous advantages. The use of this machine greatly improves engine performance, while at the same time allowing pollutant emissions to be reduced. However, one of the important issues to take into account when a turbocharger is used in passenger cars is the whistling noise due to ...


    By Inderscience Publishers

  • Reduction of Train Noise Monitored by New Measurement Station

    With increasing passenger and freight traffic, the strengthening of the rail traffic is an important and actual issue. For sustainable mobility, the reduction of noise pollution caused by trains is essential. All involved parties agree on one claim: Increase railway traffic, decrease railway noise! Additional to two already existing stations measuring road traffic noises, ...

  • Invictus noise monitor on the right track- Case Study

    An international acoustic consultancy was engaged by contractor Balfour Beatty on behalf of the end client Network Rail in this landmark project that is revolutionising transport across London. The Project: The new rail link will help cut journey times to the heart of the capital by two thirds in some cases, passing through 37 stations and running 118km from ...


    By Cirrus Environmental

  • Distributor for Vibration Sensors

    SPC - ELECTROTECH is an offical distributor of Monitran Vibration Sensors. These include the most advanced system of vibration monitoring velocity transducer with DC output in the following versions MTN/2285-2P, ...


    By SPC ELECTROTECH UK

  • Trends in pixel fixed pattern noise characteristics with transfer gate geometry

    This paper investigated pixel characteristics with a split of transfer gate structure in CMOS image sensor. It is shown that the transfer gate (TG) should be as wide as possible for the given pixel structure for lag–free pixel operation. This investigation uncovered relationships between transfer gate geometry and pixel performance that could provide guidance when designing pixel structure. In ...


    By Inderscience Publishers

  • Sensor data processing for emergency response

    A gap with current Emergency Response (ER) is the lack of real-time information on the status of an incident. Wireless sensor networks have shown great potential in addressing this gap. However, sensor data streams often contain 'noise', thus they are too difficult to be directly interpreted. In addition, sensor data are often meaningless unless it is associated with time and location ...


    By Inderscience Publishers

  • Demolition Noise Monitoring with John F Hunt - Case Study

    Cirrus Environmental has enjoyed a long alliance with John F Hunt Demolition going back over many years, so much so, the company’s Health, Safety & Environmental Department has accumulated almost an historic arsenal of Cirrus equipment that charts the journey of noise monitoring over the years. About John F Hunt Demolition The ...


    By Cirrus Environmental

  • Integrate noise measurements into your existing Process Monitoring and Control Systems.

    The ZE:908 is a small and lightweight power supply and acoustic conditioning unit for the Cirrus MV:200 microphone preamplifiers and MK:170 Outdoor microphone units. Many industrial plants have a variety of process sensors strategically placed around their site so that safety, environmental impact and efficiency can be monitored and managed, in real time, from one or more control rooms. The ...


    By Cirrus Environmental

  • ZE: 908 Acoustic Interface - The simple way to integrate noise measurements in industrial settings

    The ZE: 908 allows users to add a noise measurement capability to an existing process control system. The ZE:908 is a small, lightweight power supply and acoustic conditioning unit for microphone preamplifiers, it is ideal as a front-end for data logging and analysis systems where a simple and accurate acoustic input is required as an interface between an acoustic transducer and a process ...


    By Cirrus Research plc

  • Controlling combustion noise in direct injection diesel engine through mechanical vibration measurement

    The next generations of direct injection diesel engines have greatly improved their performances compared with petrol engines. However, one of the pending subjects is the noise and vibration levels, due to working cycle itself. The design effort to reduce the emissions of noise and vibration transmitted to the vehicle's driver could be lessened because of the assembly process variation. In this ...


    By Inderscience Publishers

  • ZE: 908 Acoustic Interface – The simple way to integrate noise measurements in industrial settings

    Cirrus Environmental, a leading specialist in the design and manufacture of environmental noise monitoring solutions provide a specially designed acoustic interface, ZE: 908, which allows users to add a noise measurement capability to an existing process control system. The ZE: 908 is a small, lightweight power supply and acoustic conditioning unit for microphone preamplifiers, it is ideal as a ...


    By Cirrus Environmental

  • ZE: 908 Acoustic Interface – The simple way to integrate noise measurements in industrial settings

    Cirrus Environmental, a leading specialist in the design and manufacture of environmental noise monitoring solutions provide a specially designed acoustic interface, ZE: 908, which allows users to add a noise measurement capability to an existing process control system. The ZE: 908 is a small, lightweight power supply and acoustic conditioning unit for microphone preamplifiers, it is ideal as a ...


    By Cirrus Environmental

  • Fibre optic sensors as a non–destructive tool for structural monitoring

    Structural monitoring is a diagnostic tool for detection of defects/damages and for scheduling maintenance operations. It is essential to determine the safety of the structures by Non–Destructive Testing (NDT) for evaluation of strength/integrity. This assessment is required for the repair, rehabilitation and life extension of the structure. Fibre Optic Sensors (FOS) are attractive sensing ...


    By Inderscience Publishers

  • Response time testing of temperature sensors using loop current step response method

    The Loop Current Step Response (LCSR) method is used for in–situ response time testing of temperature sensors as installed in an industrial process. This paper presents the theoretical foundation of the LCSR (test theory, LCSR equation and test procedures) and the author's research to validate its use in nuclear power industry applications. The validity of the LCSR method depends on how ...


    By Inderscience Publishers

  • A neural network approach for on-line fault detection of nitrogen sensors in alternated active sludge treatment plants

    In this paper, an effective strategy for fault detection of nitrogen sensors in alternated active sludge treatment plants is proposed and tested on a simulated set-up. It is based on two predictive neural networks, which are trained using a historical set of data collected during fault-free operation of a wastewater treatment plant and their ability to predict reduced (ammonium) and oxidized ...


    By IWA Publishing

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