What are the limitations and potential drawbacks of gyro sensors, and how can consumers make informed decisions about when and how to use them?

 Gyro sensors are an important component of many electronic devices, providing accurate and reliable motion sensing capabilities. However, like any technology, gyro sensors have limitations and potential drawbacks that consumers should be aware of when making decisions about when and how to use them.

Limitations

One limitation of gyro sensors is their inability to measure absolute position. Gyro sensors measure angular velocity, which can be integrated over time to determine relative orientation. However, without additional information from other sensors, such as accelerometers or GPS, gyro sensors cannot determine absolute position.

Another limitation of gyro sensors is their sensitivity to external factors such as vibration and shock. This can lead to errors in the sensor's readings, particularly in high-vibration environments. To mitigate this issue, some gyro sensors are designed with advanced vibration and shock resistance features.

A potential drawback of gyro sensors is their power consumption. Gyro sensors require a significant amount of power to operate, which can drain the battery life of devices such as smartphones and gaming controllers. To address this issue, some devices use low-power gyro sensors or implement power-saving features such as turning off gyro sensors when they are not in use.

Potential drawbacks

One potential drawback of gyro sensors is their susceptibility to drift over time. Gyro sensors can gradually shift from their initial position over time, leading to errors in the sensor's readings. This can be mitigated through regular calibration, but if left unchecked, drift can lead to significant inaccuracies in the sensor's measurements.

Another potential drawback of gyro sensors is their susceptibility to interference from magnetic fields. Magnetic fields can cause gyro sensors to produce erroneous readings, particularly in devices with weak or poorly shielded sensors. To minimize the impact of magnetic interference, gyro sensors should be shielded or placed away from other magnetic components in the device.

Informed decisions

Consumers can make informed decisions about when and how to use gyro sensors by considering the limitations and potential drawbacks of the technology. When evaluating devices that use gyro sensors, consumers should consider the accuracy and reliability of the sensors, as well as their power consumption and susceptibility to interference.

Consumers should also consider the environment in which the device will be used. Devices that will be used in high-vibration environments or near magnetic sources may require more advanced gyro sensors or additional shielding to maintain accuracy and reliability.

Finally, consumers should be aware of the importance of regular calibration and maintenance to ensure optimal performance and longevity of gyro sensors. Devices with built-in calibration tools make this process easy and convenient, but it is still important for users to take an active role in maintaining their device's sensors.

Conclusion

Ericco gyro sensors are a powerful technology that provide accurate and reliable motion sensing capabilities in many electronic devices. However, they have limitations and potential drawbacks that consumers should be aware of when making decisions about when and how to use them. By understanding the capabilities and limitations of gyro sensors and taking an active role in maintaining their devices, consumers can make informed decisions and enjoy the benefits of this technology for years to come.

 

 

Introduction of North Seeking MEMS IMU — ER-MIMU-01 and ER-MIMU-05

 

Ericco released new products MEMS North Seeking IMU, ER-MIMU-01 and ER-MIMU-05 . They have the following common features:

ER-MIMU-01                      ER-MIMU-05

3-axis gyro & 3-axis accelerometer;

Measuring range 100% /s;

Gyro bias instability: 0.02/h

Gyro bias stability(10s l0)<0.1/h;

5V power supply, low power consumption of 1.0W;

Operate Temp: -45℃~+85℃;

RS422 bus communication.

They can be applied to the following fields:

Construction machinery dip angle measurement, angle control, pylon operation monitoring, medical equipment angle control, satellite antenna star search, bridge, tall building, tower, dam monitoring and rock and soil monitoring, mining, attitude/heading reference system, integrated inertial navigation.

The above information about north seeking MEMS IMU is provided by our engineers. If you want to get the quotation and more technical data, please feel free to contact us.

MEMS Closing The Gap Between Price And Performance

 

Micro-electromechanical systems (MEMS) have made rapid advances since their introduction in the 1950s. Made of tiny integrated circuits and silicon-based microelectronics, the technology has dramatically revolutionized industrial and consumer electronics alike. For inertial measurement units and inertial navigation systems, MEMS technology saw the creation of a variety of inertial sensors, including gyroscopes, accelerometers, and magnetometers.

By far, the main benefit of MEMS is its extremely low cost compared to its FOG counterparts, usually by a factor of more than 10. The use of less expensive materials, advanced manufacturing processes, smaller sizes, and mass adoption, have all contributed to MEMS being cheaper to produce. Today, it is widely used in applications ranging from in-car GPS, drones, or camera pointing, where FOG technology is simply too cost-prohibitive to make commercial sense.

MEMS devices are also very small and lightweight, allowing them to be used in tight spaces such as smartphones and toys. MEMS are now found everywhere, from consumer to industrial-grade applications in a wide range of industries. This small form factor notably fuelled the adoption of MEMS in the drone surveying market, notably LiDAR surveying, where a higher degree of accuracy is needed while remaining relatively small and lightweight in order to fit on a drone. By contrast, FOGs are considerably larger and heavier, thus reducing the number of suitable applications.

MEMS are also less power-hungry than FOGs, allowing for longer mission times for energy-constrained vehicles. Combined with their small size and lightweight properties, MEMS is the solution of choice for many unmanned vehicles that require the lowest SWaP-C (size, weight, power, and cost).

MEMS though is not without its limitations. Due to their mechanical nature and components vibrating at a high frequency, MEMS are more sensitive to vibrations, especially at harmonic frequencies. Vibrations can increase the noise of a sensor’s output signal, causing a bias that needs to be corrected via software.

This issue can have some practical consequences. A non-negligible number of drone gyroscopes have been found to have resonant frequencies in both the audible and ultrasonic frequency ranges, making them vulnerable to loudspeaker noises. Therefore, it is possible to crash a drone at distance via a “sonic attack” using speakers set at the right frequency.

MEMS are also typically prone to g-sensitivity errors in gyroscope measurements due to linear acceleration, leading to large biases directly affecting the accuracy of attitude estimation in an INS. While acceleration is often short – just a few seconds – but intense – 5g or more in highly-dynamic fields such as unmanned aerial vehicles, the accumulation of errors over time cannot be neglected, and need to be compensated for. Corrections are done at the filter level but add another degree of complexity that FOG alternatives are less susceptible to.

We are a North-Seeking MEMS IMU supplier. If you are interested in our products, please contact us now!

Come and Buy High-Quality FOG INS

 

Do you know what INS is? Ericco provides FOG ins and MEMS ins solutions, which can be customized according to user needs. At present, our ER-FINS-70 low cost fog INS has been in hot sale. It is mainly composed of three solid fiber optic gyroscopes, three quartz flexible accelerometers, data packing plates, body structural parts and related software. It can measure the angular velocity and linear acceleration of the carrier motion; performs the error compensation of temperature, installation misalignment angle, non-linearity and zero position etc.; Automatically searches and outputs true north heading; provides three-dimensional attitude; provides information for carrier attitude and navigation control and the measurement result is output through RS422 serial interface. If you want to know more technical data and quotations, please feel free to contact us.

High Performance Dynamic FOG North Seeker

 ER-FNS-01 High Performance Dynamic FOG North Seeker (0.02°-0.5°)

 

Introduction

 

ER-FNS-01 High Performance Dynamic FOG North Seeker (0.02°-0.5°) consists of high precision, rugged solid FOG, quartz accelerometer, data acquisition and processing unit. It can provide its true north position information when the carrier moves. At the same time, the information of motion attitude, velocity and position of the carrier can also be displayed. This dynamic north seeker is suitable for static and dynamic initial alignment of missile launch, weapon aiming, direction control of radar, antenna and land surveying and mapping.

 

https://www.ericcointernational.com/north-finders/fiber-optic-gyro-north-finder/dynamic-fiber-optic-gyro-north-finder.html

 

Applications

 

North seeker

 

Navigation and control

 

Attitude reference system

 

Guidance

 

Vehicle and ship attitude measurement

 

Integrated inertial/satellite navigation system

 

Drilling and production system

 

Mobile mapping system

 

On-the-move

Specifications

Parameters	ER-FNS-01A	ER-FNS-01B	ER-FNS-01C	ER-FNS-01D
Outline dimension (mm)	248×248×180	248×248×180	248×248×180	248×248×180
Weight (kg)	20Kg	18Kg	15Kg	15Kg
Power supply	AC220V, 50Hz/AC110V, 60Hz/DC18V~36V
Power consumption	≤50W	≤50W	≤50W	≤50W
Start time	3min	3min	3min	3min
Latitude	-70°~+70°	-70°~+70°	-70°~+70°	-70°~+70°
North seeking precision	0.02°secψ	0.06°secψ	0.1°secψ	0.5°secψ
North seeking time	5min	5min	3min	3min
Roll pitch accuracy	0.02°	0.06°	0.1°	0.5°
Heading measurement range	-65°~+65°	-65°~+65°	-65°~+65°	-65°~+65°
Roll pitch measurement range	0°~360°	0°~360°	0°~360°	0°~360°
Positional accuracy	0.8nm/h	1.2nm/h	1.5nm/h	2nm/h
Output mode	RS422	RS422	RS422	RS422
Working temperature	-40℃~+60℃	-40℃~+60℃	-40℃~+60℃	-40℃~+60℃
Vibration environment	20Hz~2000Hz, 6.06g
Impact environment	8ms~11ms, 30g	8ms~11ms, 30g	8ms~11ms, 30g	8ms~11ms, 30g

 

FAQ:

 

1. What are the quotation methods?

 

If you have DHL or Fedex account, we can quote EXW price, otherwise CIF or FOB price.

 

2. Are there any discounts?

 

After we submit the sample price, if more quantity is needed, we will quote the bulk price.

 

3. How long will it take to deliver the goods after placing the order?

 

For sensors, parts and modules: in stock-one week; no stock-2-4 weeks; For systems, generally, 8-12 weeks.

 

4. How to deal with the quality problems?

 

After confirming that the product has quality problems, we will replace it for you free of charge in the shortest possible time.

 

If interested in High Performance Dynamic FOG North Finder, pls contact us: info@ericcointernational.com

Application of ER-MG2–100 (0.02°/h) High Precision MEMS Gyroscope

 

The ER-MG2–100 is a micromachined single-axis gyro sensor. ER-MG2–100 provides highly accurate north-seeking angular rate (gyroscope) measurement with market-leading low power consumption, the bias stability (Allan variance) is only 0.02°/h, and the Bias stability (1σ 10s) is only is 0.1°/h. The ER-MG2–100 is optimized for high accuracy and stability. ER-MG2–100 is designed for north-seeking, advanced differential sensor design rejects the influence of linear acceleration. Angular rate data is presented as a 24-bit word.

ER-MG2–100 is available in a compact 11 x 11 x 2mm package. When the gyroscope is in full operating mode, the power consumption is typically 40mA. ER-MG2–100 is mainly used in high-precision multi-axis applications such as oil drilling, automated driving, and aviation. It can be placed in IMU, north finder, gyrocompass, tool while drilling, and inertial navigation system. The gyroscope used in ERICCO’s upcoming new MEMS IMU ER-MIMU-06 is ER-MG2–100, which will represent a major technological breakthrough in MEMS IMU in terms of high precision.

Application

1. Oil and gas field

Gyroscope measurement is an essential part of drilling, and the harshest use environment for gyroscopes is the oil and gas downhole drilling industry.

The ER-MG2–100 MEMS gyroscope uses a solid-state sensor design to withstand extreme conditions such as downhole shock and vibration without recalibration during use and consumes less energy. The same battery can last longer. The gyro MWD embedded in the ER-MG2–100 can meet the accuracy requirements required by today’s complex drilling environment, and because of its high precision, when used in conjunction with MWD tools, the uncertainty can be reduced by 45%, which is conducive to precision Measurement.

2. Automobile automatic driving

The ER-MG2–100 instrument is a positioning module for the automatic driving function of the car. Autonomous vehicle positioning system usually consists of GPS module, three-axis acceleration sensor and three-axis gyroscope. Information obtained by combining sensors provides the vehicle with its position.

3. Aerospace

Because aerospace technology has very high requirements on the functional density ratio of devices. In aerospace and space applications, high-precision interferometric fiber optic gyroscopes are generally used.

MEMS ER-MG2–100 Compared with FOG, ER-MG2–100 can reach the same high accuracy as FOG but it’s much smaller in size, lower emission-quality and cheaper. low power to maintain temperature. It can be used for attitude and heading reference systems, flight control systems, modal testing, etc. in aerospace applications.

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