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What is an intelligent remote control?
Intelligent remote control, also known as infrared repeater, is the basic component of smart home system. Its function is to control electrical equipment, such as TV, CD machine, power amplifier, air conditioner, etc. through infrared remote control.
Infrared remote control is a widely used control method. At present, most traditional household appliances that support remote control use infrared remote control. The infrared remote controller has the characteristics of low cost, easy implementation, mature technology and convenient control. However, because the infrared remote control uses invisible infrared light, if there is a barrier between the remote control and the controlled equipment, the control effect will be weakened, or even lead to uncontrollability. Therefore, the infrared remote controller is generally directional and should run in the direction of the remote control receiver of the controlled equipment without blocking.
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The intelligent remote controller usually uses multiple infrared transmitters to form an omni-directional infrared emission component, that is, the infrared control signal can be transmitted in all directions. As long as there is no obvious shielding, the control signal can reach the controlled equipment. The control signals used by infrared remote control equipment can generally be added by learning intelligent remote control. For some commonly used large brand appliances, such as air conditioners and TV fixed infrared control signals, some intelligent remote controls can be controlled by built-in or directly downloaded from the network to realize the control of various appliances, with low cost and wide application.
The following points should be noted when using the intelligent remote control:
Although 1. The infrared control signal sent by the intelligent remote controller is omni-directional, it may still be blocked and affect the control effect. Therefore, the intelligent remote controller can only be used in one room and should be placed in a relatively open position.
2. The infrared light signal used by the intelligent remote control is easy to be interfered by the sun, so the outdoor effect is greatly reduced and affected by direct sunlight. Therefore, intelligent remote control components should generally avoid direct sunlight.
3. The external material of the infrared intelligent remote control LED internal emission tube needs to pass through infrared light, so the dark red and purple transparent plastic material is generally selected. This material is black from the outside under the daily light, so the intelligent remote control components are generally designed to be black as a whole or the local transparent area needs to be black. When matching with household equipment, attention should be paid to this color problem.
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4. Infrared remote control is a one-way control mode and generally does not have the function of state feedback. Therefore, when the reliability requirement is high, the use of intelligent remote control equipment should feed back the working status of the equipment to the system through other ways.
In addition to the intelligent remote control based on infrared, there are also intelligent remote controls using radio frequency technology. Some products also integrate intelligent infrared remote control and radio frequency remote control, such as Bolian RMPRO.
Compared with infrared remote control, radio frequency remote control has the characteristics of strong diffraction ability, large transmission range, no interference from sunlight and no directionality. It is more widely used than infrared in rolling shutter doors, curtains, electric curtains and courtyard doors.
Of course, most radio frequency remote control is also one-way control mode, and generally has no state feedback function.
When using RF based intelligent remote control components, the following points should be noted:
1. The intelligent RF remote controller generally has a transmitting antenna. The transmitting signal capability of the antenna is related to the length of the antenna. Therefore, the length of the antenna should be set to the length of the corresponding transmission frequency as far as possible to increase the coverage of the intelligent RF remote controller.
2. Although the intelligent radio frequency remote controller has no directionality and does not need to face to face, it will still have a large attenuation when encountering strong shielding media such as metal mesh. Therefore, generally try to avoid the metal mesh or the bearing wall with a large range of similar media.