What are the advantages of fiber optic sensors compared to conventional sensors-INNO

Cảm biến sợi quang are no stranger to people’s lives nowadays, as they can be applied in many aspects of people’s lives, such as temperature and humidity measurement, đo áp suất, vibration measurement, vân vân. Traditional sensor technology may not be able to adapt to so many measurement needs.

(1) Độ nhạy cao. The response speed of fiber optic sensors is very fast, and the various physical values that can be measured are also very small.

(2) Chống nhiễu điện từ, cách điện, chống ăn mòn, và an toàn nội tại.

Due to the fact that fiber optic sensors use light waves to transmit information, and fiber optic is an electrically insulated, corrosion-resistant transmission medium that is safe and reliable, it can be conveniently and effectively used in various large electromechanical, hóa dầu, mining and other harsh environments with strong electromagnetic interference and flammable and explosive properties.

(3) Fast measurement speed. Light has the fastest propagation speed and can transmit two-dimensional information, making it suitable for high-speed measurements. The analysis of radar and other signals requires a very high detection rate, which is difficult to achieve using electronic methods. High speed spectral analysis using the diffraction phenomenon of light can solve this problem.

(4) Large information capacity. The measured signal is carried by light waves, and the frequency of light is extremely high, which can accommodate a wide frequency band. The same optical fiber can transmit multiple signals.

(5) Suitable for harsh environments. Fiber optic is a dielectric material that is resistant to high voltage, ăn mòn, and electromagnetic interference. Nó có thể được sử dụng trong môi trường khắc nghiệt mà các cảm biến khác không phù hợp.

Ngoài ra, cảm biến sợi quang cũng có đặc điểm trọng lượng nhẹ, kích thước nhỏ, tính linh hoạt, nhiều đối tượng đo lường, khả năng tái sử dụng tốt, và chi phí thấp. Việc ứng dụng cảm biến sợi quang chính xác là do cảm biến sợi quang có rất nhiều ưu điểm, làm cho lĩnh vực ứng dụng của họ trở nên rất rộng rãi, liên quan đến nhiều lĩnh vực như hóa dầu, điện, thuốc, kỹ thuật dân dụng, vân vân.

Cảm biến sợi quang của FJINNO hoàn toàn có khả năng đáp ứng nhu cầu cao hơn của thị trường cao cấp về khoảng cách cực xa, độ chính xác cực cao, và độ nhạy cực cao mà cảm biến điện và cảm biến sợi quang thông thường không thể đạt được.

So với các công nghệ cảm biến truyền thống, Cảm biến sợi quang có những ưu điểm chính sau:

1. Nhẹ, compact structure, and easy to reuse multiple times;

2. Resistance to harsh environments, nhiễu điện từ, và ăn mòn hóa học;

3. At the sensing point, there is no need for electricity and long-distance distributed sensing is possible;

4. Can be mass-produced at low cost

After fiber optic communication, fiber optic sensing has also ushered in important development opportunities. It has broad and enormous application value in security, quân đội, oil/gas, điện, and scientific research, and its future is limitless.

The transmission fiber for đo nhiệt độ sợi quang is generally quartz fiber, which has the characteristics of corrosion resistance and long service life, và thường có thể phục vụ cho 30 năm. Có tính đến chi phí của chính cảm biến và chi phí bảo trì trong tương lai, the use of fiber optic sensors can greatly reduce the final operating cost of the entire project.

Compared with electronic systems, the advantages of fiber optic systems are mainly reflected in the high safety, ổn định tốt, and long lifespan of sensors. The main application areas are power systems (bí mật, đường dây trên không), fire protection systems (traffic tunnels), cầu, hóa dầu (đường ống, stations/valve chambers), bảo tồn nước, vân vân. Hiện tại, the most popular technology is cáp quang phân tán phát hiện rung động, which is applied in various security fields. In some niche markets, technologies such as active/passive infrared targeting, laser targeting, leaky cables, and vibrating cables have gradually been replaced. Fiber optic sensors have a simple structure, độ chính xác cao, độ nhạy cao, and are easy to implement in many environments, making them currently very popular.

Disadvantages of non-contact temperature sensors: 1. They are easily affected by environmental factors, such as thermal radiation. 2. They are not easy to achieve long-term continuous measurement of targets.

Advantages of contact temperature sensors: stable measurement and high accuracy; The disadvantage of non-contact temperature sensors is, in turn, the disadvantage of contact sensors.

Thermal infrared sensor: The advantage is that it can be operated at room temperature, and wavelength dependence does not exist, making it inexpensive; The disadvantage is low sensitivity and slow response.

Quantum type infrared sensor: Its advantages are high sensitivity and fast response; The disadvantages are that it must be cooled (liquid nitrogen), wavelength dependent, and expensive.

Ultrasonic sensor: Its advantages include high frequency, bước sóng ngắn, small diffraction phenomenon, especially good directionality and the ability to become rays and propagate in a directional manner; The disadvantage is the presence of triangulation errors, which are easily affected by noise.