Safran Colibrys participates in Sensor+Test Exposition in Nuremberg, Germany, from the 25th to the 27th June
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Proof Mass Position: Vibration Sensors
The MEMS die of Safran Colibrys’ accelerometers is not exactly positioned in the center of the sensor. The images shown below for vibration product line allows you to see the exact proof mass position of the acceleration to ensure accurate measurements.
VS1000:
The dot represents the center of mass.
Center Location of the VS1000 MEMS Mass
Make sure to visit the related product line page Vibration Sensors:
VS1000
Vibration Sensor
AUTHOR
Frédéric Grumbach
Accelerometers with Ratiometric Output
The sensor with a “ratiometric output” means that the sensor’s electrical output signal will change in proportion to the change in a supply voltage. Ratiometric sensors are the unamplified sensors without the built-in power-supply regulation.
Ratiometric Architecture of Safran Colibrys Accelerometers
SAFRAN Colibrys capacitive MEMS accelerometers’ electronic design is ratiometric – it utilizes the internal voltage reference (Vmid), which is derived directly from the power supply line (Vdd). This design choice provides users with the two main advantages:
- a very low dependency from the variation of the electronic alimentation (power supply input voltage) due to the fact that the input voltage is continuously measured and scaled in the hardware;
- the stability of measurements due to the fact that the ratio of power supply versus variation of power supply (mV/V) stays constant whatever the excitation voltage is applied.
Integration and Digitilization of Ratiometric Sensors
Safran Colibrys datasheets contain the chapter “Recommended Circuit”, which gives the full list of recommendations for the optimal integration of ratiometric accelerometers. Power supply management section points out that the low-noise, high-stability and low-thermal drift power supply is indispensable for correct bias, scale factor, noise and thermal accelerometer performances.
In order to preserve accelerometers’ ratiometric proprietaries during the digitalization process, ratiometric ADC is recommended. Ratiometric ADC has a very low dependency from power supply variations, which are often caused by system’s temperature change, turn-on-turn-off and coupling with adjacent systems – climate control, ventilation, heating. As ratiometric ADC will deliver output measurements automatically adjusted to the variation of power supply (in V/V units), the amount of scaling required to return the appropriate units will be reduced and signal treatment time will be shortened.
AUTHOR
Frédéric Grumbach
Recommended Circuit for VS1000
In order to obtain the best device performance, particular attention must be paid to the proximity analog electronics. A proposed circuit that includes a reference voltage, the sensor decoupling capacitors and output buffers is described in the figure below.
Optimal acceleration measurements are obtained using the differential output (OUTPs-OUTNs). If a single-ended acceleration signal is required, it must be generated from the differential acceleration output in order to remove the common mode noise.
Block Diagram & Schematic
The main blocks that require particular attention are the power supply management, the accelerometer sensor
electronic and the output buffer. The following schematic shows an example of VS1000 implementation.
Recommended Circuit
The accelerometer output is ratio-metric to the power supply voltage and its performance will directly impact the accelerometer bias, scale factor, noise or thermal performance. Therefore, a low-noise, high-stability and low thermal drift power supply is recommended. Key performance should be:
- Output Noise < 1μV/√Hz
- Output temperature coefficient < 10ppm/°C
The power supply can be used as an output signal (VDD_S) in order to compensate any variation on the power supply voltage that will impact the accelerometer signal (ratiometric output).
The electronic circuit within the accelerometer is based on a switched-capacitor architecture clocked at 200 KHz. High-frequency noise or spikes on the power supply will affect the outputs and induce a signal within the device bandwidth.
Accelerometer Sensor
The sensor block is composed of the VS1000 accelerometer and the 3 decoupling capacitors: C1, C2 and C3. These capacitors are mandatory for the proper operation and full performance of the accelerometer. We recommend placing them as close as possible to the VS1000 package on the printed circuit board.
Output Signal Conditioning
The output buffer must be correctly selected in order match the VS1000 output impedance and signal bandwidth. The AD8571 is proposed for the acceleration output (OUTP & OUTN) and the temperature output (TEMP).
AUTHOR
Frédéric Grumbach
New Vibration Sensor: The VS1000
Colibrys is releasing its new vibration sensor, the VS1000, which brings capacitive transducers to a new level of performance. The second generation of the Colibrys VS family, this new vibration sensor features an innovative low-noise ASIC (application-specific integrated circuit), along with an exceptionally stable MEMS (micro-electromechanical system) device offering proven performance, and hermetically-sealed ceramic packaging to ensure robustness and durability. With the VS1000, Colibrys further strengthens its best-in-class position for vibration sensors in the 0 to 2 kHz band.
The market for vibration sensors is booming: the market is expected to reach more than $34 billion dollars by 2020 (Research & Markets, 2015). Colibrys’ VS1000 can provide very precise health monitoring of structures, machinery or transportation infrastructures, thereby reducing operating costs, for example through preventive maintenance.
With the VS1000, Colibrys addresses a wider section of the market that has been dominated by piezoelectric (PE) and piezoresistive (PR) technologies. The advantages of variable capacitance transducers such as those used in the VS1000 include long-term durability and greater accuracy at high temperatures, and at all frequencies, including lower frequencies due to its exceptional stability. By drawing on 10 years of feedback from existing applications, Colibrys has also solved the issue of shock resistance, even repetitive shocks. The sensor also includes a smart built-in test feature, since this function is considered very important in one of Colibrys’ key markets, safety-critical systems.
Colibrys has more than 30 years of experience in MEMS technology. The company is specialized in high-performance sensors designed to address today’s most demanding critical applications.
“We are proud to announce the VS1000,” said Colibrys CEO Patrick Gougeon. “This sensor embodies our state-of-the-art expertise and is the first example of a new generation of variable capacitive MEMS sensors that will consolidate our position in the high-end accelerometer segment. Our technology has proven to be superior to the existing piezo-based products. We are now working on enhancing the performance scope of MEMS, since we believe that high-end accelerometers will soon be largely MEMS-based, because of their inherent advantages in terms of size, power consumption, robustness, stability and price.”
The VS1000 is currently available in various g-ranges. Samples can be ordered on the Colibrys website or through conventional distribution channels.
Colibrys will paticipate 2015 Rail+Metro China
Colibrys will paticipate 2015 Rail+Metro China
Our exhibition stand is N1S118
Since its debut in 2002, Rail+Metro China has became one of the most professional and authoritative platform for city metro and rail transit industry in China and even in Asia & Pacific Rim. The event has obtained support from many government departments and associations including National Development & Reform Commission, Ministry of Housing and Urban-Rural Construction, Ministry of Transportation, Shanghai Municipal Transportation Commission, China Association of Metros, China Civil Engineering Society, Shanghai Transportation Trade Association, China International Engineering Consulting Corporation, Shanghai Shentong Metro Group Co., Ltd., Southwest Jiaotong University and Tongji University, etc.
Rai+Metro China 2015 will be held from 8-10 April at Shanghai New International Expo Center with an expanded scale. It will focus on subway, tram, intercity rail, suburban railway, mid/low speed maglev, heavy haul railway and high-speed railway systems.
Tunnel China 2015 will be concurrently held, with high appreciation of your proactive participation!
China International Defence Electronics Exhibition (CIDEX) – 8 to 10 May, 2014
QINPEX is presenting in China International Defence Electronics Exhibition (CIDEX)- 8 to 10 May, 2014
http://www.cidexshow.com.cn/en/
About CIDEX
China International Defence Electronics Exhibition (CIDEX) is the only defence electronics show sponsored by Chinese military authorities and a global platform for trade dedicated to this field. Based upon local market, CIDEX is a fast track to explore the industry trends in the other parts of the world, especially in Asia.
CIDEX 2014- The 9th China International Defence Electronics Exhibition will take place at China International Exhibition Center (CIEC-The Old Center) from 8 to 10 May, 2014 ，and will once again bring together all the industry’s players to showcase the latest technological innovations. Authorities’ supports, high-end forums and professional live demonstrations will feature CIDEX 2014 a must-attend show.
WHY CIDEX 2014
• A Unique CIDEX- The only defence electronics show sponsored by PLA
16-year support from General Equipment Headquarter of PLA makes CIDEX the best access to the Chinese market.
Hundreds of military manufactures and research institutes will gather in CIDEX regularly.
As the priority for military procurement, CIDEX attracts high-level government delegations both domestic and abroad.
• A Professional CIDEX- A comprehensive platform for defence electronics
8 New Zones: Military Electronic Components, Command and Control, Test and Measurement, Electronic Warfare, Electronics Manufacture and Service, Military Application of Internet of Things.
High-end forums and panel discussions on Test & Measurement, RF& microwave, etc.
• An Open-up CIDEX- Open up to civil use
Beijing Emergency Expo (BEX) will be organized along with CIDEX 2014, including the emergency and disaster section. BEX will attract buyers from government agencies in areas of emergency, civil affairs, enforcement, civil defence, border defence, earthquake and meteorology.
Co-located with CIEE, China’s largest exhibition for information and equipments, CIDEX will open up to trade visitors from civil industries, as aerospace, shipbuilding, energy, electricity, rail transport, industrial manufacturing, broadcast television, and communications.
• A favorable-received CIDEX- Testimonials from exhibitors
Agilent started the business in defence electronics sector since 1939. We have participated in CIDEX for years. In this year’s CIDEX, we bring the most advanced products. We highly appreciate the authoritative influence and diversified services of this show.
——–Agilent Technologies
R & S is a regular exhibitor of CIDEX. We are impressed by its influence in the defence electronics industry.
——–Rohde & Schwarz
Meggitt Avionics is a UK located company with 10,000 employees throughout the world. It’s the first time for Meggitt to participate in CIDEX and we are impressed by it. We are very busy in the first day since there are many visitors with great interests in our products.
——–Meggitt Avionics
We have a better effect that ever. A large number of trade visitors are our target customers.
——–GE Integrated Platform
Colibrys releases its new ±5g MEMS accelerometer for vibration and mini shock sensing.
Colibrys (Switzerland) Ltd. has announced today the release of its VS9005.D, a new ±5g range MEMS vibration sensor, complementing its existing family of +/-2g to +/-200g products targeted for applications in the industrial and instrumentation markets.
The VS9005.D is designed to offer to Colibrys customers a new alternative to existing selection of VS9002.D and VS9010.D products dedicated in low g range and low frequency vibration measurements.
According to Philippe Krebs, Product Line Manager at Colibrys, “the VS9005.D offers optimal performances for applications in environments characterized by low levels of vibration and shock such as security and comfort. The ±5g product features a wide frequency response from DC to 1’700 Hz and a high signal to noise ratio, which ensure very good resolution in band. Typical concrete examples of applications are aerospace and automotive testing, railway and process control or monitoring of vibration for industrial security and control. This new product strengthens Colibrys’ position as the world leading supplier of MEMS accelerometers for vibration, shock and condition monitoring applications”.
This product benefits from the specialised knowledge and applications experience of Colibrys accelerometers in term of reliability for harsh environments and safety critical applications.
About COLIBRYS – Smart Sensing Solutions
Colibrys, new company of the group Sagem (Safran), is a world-leading supplier of standard and semi-custom MEMS based motion sensors to the harsh-environments (Military, Aerospace and Energy) and safety critical (Industrial and Instrumentation) applications. COLIBRYS family of motion sensors include extremely low noise, shock resistant seismic sensors, high stability shock tolerant inertial and shock accelerometers tilt sensors as well as DC coupled capacitive vibration sensors. COLIBRYS is based in Neuchâtel, Switzerland. For more information: www.colibrys.com
About MEMS Technology
MEMS (Micro-Electrical-Mechanical Systems) are highly miniaturized devices that integrate a number of functions including fluidics, optics, mechanics and electronics on a single silicon chip using techniques similar to traditional integrated circuit process technology. MEMS merge sensing, actuating, and computing into miniature systems that enable enhanced levels of perception, control and performance.
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Points of contact
Colibrys joins SBG Systems to announce the Ekinox Series, a new range of inertial systems which brings MEMS to the Tactical Grade.
Colibrys joins SBG Systems to announce the Ekinox Series, a new range of inertial
systems which brings MEMS to the Tactical Grade.
Colibrys (Switzerland) Ltd, Neuchâtel / SBG Systems, France, 31 July 2013 – with the strong support of Colibrys, SBG Systems presents a brand new range of AHRS and Inertial Navigation Systems called Ekinox Series. Integrating Colibrys accelerometers, the Ekinox Series brings robust and cost-effective MEMS sensors to the Tactical Grade.
At 0.05° attitude and 2 cm position, the Ekinox series offers outstanding performance in a compact and cost-effective packaging. In inertial navigation, selection of accelerometers is as important as gyroscopes to achieve such high precision. “We studied a lot of components and we selected Colibrys accelerometers for their advanced performance, their quality and the guaranteed specifications. These accelerometers show very low residual error”, declares Raphaël Siryani, Chief Marketing & Sales Officer of SBG SYSTEMS.
Colibrys made the integration phase easy and fast. “Their accelerometers are straightforward to integrate and during the whole integration phase, we have been able to count on Colibrys and its team which was available, conscientious, and very professional. We consider them as a close partners”, Mr. Siryani to add.
Colibrys MEMS accelerometers are the ideal candidates for such applications, where performance has to meet systematically stringent requirements.
“Colibrys is proud to be part of this success story and to contribute actively to the success of SBG SYSTEMS. Through this positive example, Colibrys confirms once more its position as independent world leading supplier of advanced MEMS accelerometers” says Mr. Bahram Arbab, new VP Global Sales for Colibrys.
Colibrys will be present at AUVSI’s Unmanned Systems 2013, held in Washington, DC from 12-15 August (Safran USA/Booth # 2535) and at MAKS, held at Moscow, 26-30 August – with participation of our Russian distributors Aviton booth #C1-6, Radiant booth #D10-33.
COLIBRYS – Smart Sensing Solutions
Colibrys, new company of Sagem (Safran), is a world-leading supplier of standard and semi-custom MEMS based motion sensors to the harsh-environments (Military, Aerospace and Energy) and safety critical (Industrial and Instrumentation) applications. COLIBRYS family of motion sensors includes extremely low noise, shock resistant seismic sensors, high stability shock tolerant inertial and shock accelerometers tilt sensors as well as DC coupled capacitive vibration sensors. COLIBRYS is based in Neuchâtel, Switzerland. For more information: www.colibrys.com.
SBG Systems – Redefine Motion Limits
SBG Systems is a leading French supplier of MEMS-based inertial motion sensing solutions. The company provides a wide range of inertial solutions from miniature to high accuracy. Combined with cutting-edge calibration techniques and advanced embedded algorithms, SBG Systems products are ideal solutions for industrial & research projects such as unmanned vehicle control, antenna tracking, camera stabilization, and surveying applications. For more information: www.sbg-systems.com.
Contacts
Colibrys (Switzerland) Ltd
Bahram Arbab
VP Global Sales
P +41 79 796 59 45
[email protected]
SBG Systems
Hélène Leplomb
Marketing & Communication Manager
P +33 1 80 88 45 07
[email protected]
Rail+Metro China 2013
Qinpex will be present in the Rail+Metro China 2013。 （http://www.metro-china.org )
Qinpex’s events
| Event | Date | Location | Booth |
| SIAF 2013 | 4 – 6 March | Guangzhou (China) | Booth #B473 |
| Rail+Metro China 2013 | 4 – 6 Jun | Shanghai (China) | Booth#A249 |
About Rail+Metro China 2013
Since its debut in 2002, Rail+Metro China has obtained support from many government departments and associations including National Development & Reform Commission, Ministry of Housing and Urban-Rural Construction, Ministry of Transportation, Shanghai Municipal Transport and Port Authority, China Association of Metros, China Civil Engineering Society, China International Engineering Consulting Corporation, Shanghai Shentong Metro Group Co., Ltd., etc.
Rail+Metro China 2014 will be held from 17-19 June at Shanghai New International Expo Center with a much increased scale. It will focus on 10 categories of railway systems, including subway, light rail, monorail, tram, maglev, suburban railway, intercity rail, regional railway, heavy haul railway and high-speed railway systems.
Rail+Metro China 2014 & Tunnel China 2014 will for the first time be co-located with Transport Logistic 2014, a leading show for the entire transportation, logistics and air cargo industry in Asia. This will undoubtedly provide you a unique global platform to display the state-of-the-art technology and equipment of the complete transportation industry.
