Infrared communication and Bluetooth communication

Infrared communication is a wireless communication technology that uses infrared rays as a communication carrier. It generally consists of two parts, the infrared transmitting and receiving system. The transmitting system modulates the infrared radiation and then transmits infrared signals, generally about 0.9μm wavelength infrared rays, using ASK, PPM and other modulation modes, with a transmission rate of 2.4kbps~16Mbps.The receiving system uses optical devices and infrared detectors for reception and demodulation.

Infrared communication is characterized by low cost, short communication distance and high transmission rate. With its strong confidentiality, large information capacity and simple structure, it can be used both indoors and in the field. As it has good directionality, it is suitable for confidential communication between defense border posts and outposts. However, the infrared beam is susceptible to absorption by dust, rain and other substances, so it is susceptible to the influence of the climate when in use and the communication distance is short.

Because of its simple structure, easy to implement, low cost, small size and easy to integrate, infrared communication has been favored by personal array products this year and is widely used in embedded system products. Most of the cell phones are not equipped with infrared transmission function. Infrared function can also be found in digital cameras, printers, PDAs and notebook computers.

In recent years, with the development of short-range wireless communication technology, the concept of PAN has been brought up. The so-called PAN is personal area network, and its core idea is: to replace the traditional wired cable with radio or infrared, to realize the intelligent interconnection of personal information kind of garlic, and to form a personalized information network. Infrared communication technology is one of the main technologies to realize PAN.

Bluetooth communication

Bluetooth technology is an open global specification for wireless data and voice communications, which is a short-range radio technology based on low-cost, near-range wireless connectivity that creates a special link between fixed and mobile device communication environments. In essence, it is the establishment of a common radio air interface and its control software open standards, so that communications and computers are further combined, so that portable devices produced by different manufacturers in the absence of wires or cables connected to each other, can have the performance of interoperability in the proximity of the range.

Faster frequency hopping and shorter packets than other systems operating in the same frequency band make Bluetooth more stable than any other system.The use of FECs suppresses random noise over long distance links. Frame hopping transceivers applying binary FM technology are used to suppress interference and prevent fading.

Characteristics of infrared communication technology

Infrared communication technology is a wireless connection technology that is currently widely used around the world and is supported by a wide range of hardware and software platforms:
-The wireless data sending and receiving is realized through the mutual conversion between data electrical pulse and infrared light pulse;
-Mainly used to replace point-to-point cable connections;
-New communication standards are compatible with earlier communication standards;
-Small angle, short distance, straight line transmission, strong confidentiality;
-Higher transmission rate

Applicaiton

Infrared communication technology is often used in the following devices;

-Laptop computers, desktop computers, and handheld computers;

-Computer peripherals such as printers, keyboards and mice;

-Telephones, cellular phones, and pagers;

-digital cameras, calculators, game consoles, set-top boxes, watches;

-Industrial equipment and medical devices;

-Network access devices such as modems.

CLZ Optical Co., Ltd. is a factory specializing in the manufacture of optical lenses, from design to production and sales integration, our products are widely used in various fields, such as medical equipment, lasers, sensors, etc., including infrared communication mentioned in this article, fiber optics, ultraviolet and so on.

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