Development News

Technology news and its applications
  • 2019: R-sensors extends digital seismometers series
    2019: R-sensors extends digital seismometers series
    R-sensors launches two new models of digital seismometers which are CME-6011ND и CME-6111ND

    Key features of this series are mechanical durability, low power consumption, presence of force feedback - all these provide a notably improved time and temperature stability of the parameters as well as simplicity in operation

    R-sensors' digital seismometers can be used in various applications - from seismic observatories to microzoning.
  • 2018: tests on the Ladoga lake
    2018: tests on the Ladoga lake
    Our colleagues of The Center for Molecular Electronics (CME) in cooperation with The Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences carried out the field research tests of geohydroacoustic molecular-electronic measuring modules at the test site of Oceanpribor (Ocean Instruments) on one of the skerries of the Ladoga Lake which is east of Saint Petersburg.

    Ice-frozen modules in a predetermined arrangement conducted the 24-hour monitoring of seismic events on the ice of the lake. By means of the recorded data, the propagation of various types of waves in a complex structure (ice-water-bottom) were studied. The received data allowed to perform the tomography of the place of measurement. The autonomous molecular-electronic geohydroacoustic modules provided the registration, storage and data transfer in relation to the location coordinates and the exact GPS time during one week. 

    In addition, the testing program included full-scale tests of a new development of CME – a prototype of a molecular-electronic hydrophone on a natural reservoir. The sensors' self-noise and comparison of the response to an external signal with foreign analogs were studied.
  • 2018: research article on molecular-electronic hydrophone
    2018: research article on molecular-electronic hydrophone
    The Russian Academy of Sciences Journal published the research article titled 'A Molecular-Electronic Hydrophone for Low-Frequency Research of Ambient Noise in the World Ocean'

    The article describes the data of technical parameters testing of a molecular-electronic hydrophone, the operation of a hydrophone with a frequency range of 0.02–200 Hz and sensitivity of 0.75 mV/Pa. Ambient noise was measured with the use of correlation analysis.
  • 2018: research article on measuring devices based on METs
    2018: research article on measuring devices based on METs
    The article includes basic operation principles of sensors based on molecular-electronic transducers (METs). The reviews on physical processes into MET and their operating characteristics are considered; modern MET manufacturing technologies and methods as well as new applications of planar microelectronic METs are discussed including an overview of devices and systems based on the METs.

    That research article is written by R-sensors' team members in cooperation with Russian scientific and research organizations.
  • 2018: research article on angular sensor with feedback
    2018: research article on angular sensor with feedback

    The article reports on development of a precision angular molecular-electronic accelerometer with a magnetohydrodynamic cell for creation of a negative feedback and optimization of electronics for creation of a feedback signal. The main characteristics of the angular accelerometer such as an amplitude-frequency characteristics, self-noise and Allan variance were experimentally measured. 

    Results of comparison of the obtained output parameters to analogs showed prospects for further development in this field.
  • 2017: presentation of seismometer for asteroid, NASA files
    2017: presentation of seismometer for asteroid, NASA files
    An amazing presentation titled 'APEX - Asteroid Probe Experiment' given at The Small Satellite Conference by our colleagues from Johns Hopkins University, University of Maryland and Arizona State University describing a possible placement of a molecular-electronic seismometer on the surface of Apophis asteroid.

    Watch the original presentation available on the NASA website.
  • 2017: NDAS data loggers launched
    2017: NDAS data loggers launched
    The data loggers' product line was enriched with the products by NordLab LLC - a joint enterprise of R-sensors and MIPT. The new data loggers are named NDAS. They exploit the latest ARM architecture Texas Instruments' controller and a multichannel ADC by Analog Devices. 

    Low power consumption and wireless Wi-Fi interface for setup and signal quality control are but two distinctive features of NDAS. A GPS/Glonass combined receiver provides coordinates and clock synchronization.

    The current product line is constituted by 4 channel low power autonomous data logger NDAS-8224 and 6 channel multi-purpose data logger NDAS-8226. The 12 and 48 channel versions are under development. The data loggers can be equipped by an accelerometer and a magnetic compass which allow determination of azimuthal orientation and tilt with respect to vertical direction as well as by temperature, pressure and humidity sensors for checking the working conditions and impermeability in case of a submerged deployment. All auxiliary information from sensors is available in telemetric transfer from the data logger as well as it is stored along with the registered signal. 

    The full compatibility with R-sensors' seismic sensors was of most importance during the development of the data loggers. A joint project of R-sensors and NordLab for the design of seismographs - seismic sensors with a data logger inside - is now being developed.
  • 2017: article on underwater seismic station NDAS-8224
    2017: article on underwater seismic station NDAS-8224

    This paper reports on a field testing of the underwater self-contained seismic station NDAS-8224 which has a modular structure allowing for operations under different environmental conditions like onshore, offshore to a 500-meter depth and in transition zones. The station operation frequency band is 300 Hz which is wider than that of the majority of seismic stations based on standard (10 Hz) geophones.
  • 2017: article on accelerometers MTSS-1033A
    2017: article on accelerometers MTSS-1033A

    This paper reports on the development of the feedback system for a MET seismic accelerometer, a feedback stability analysis and optimization of the signal conditioning feedback electronics to get the highest dynamic range. The article is focused on the operation principles of the MTSS-1033A seismic accelerometer and contains the latest comprehensive analysis of the noise generation mechanisms which occur in molecular-electronic transducers.
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