Double-window-integrated high-accuracy anti-interference crosstalk-preventive remote control direction sensing doorbell scheme

Abstract

The invention discloses a double-window-integrated high-accuracy anti-interference crosstalk-preventive remote control direction sensing doorbell scheme which comprises a single chip microcomputer, a pyroelectric infrared sensing head A, a pyroelectric infrared sensing head B, a button A, a button B, an infrared receiving circuit, an infrared remote control unit, a main power source and a loudspeaker. The pyroelectric infrared sensing head A and the pyroelectric infrared sensing head B are connected in front of the single chip microcomputer, the button A and the button B are connected in rear of the single chip microcomputer, the infrared receiving circuit is connected on the left side of the single chip microcomputer, the infrared remote control unit is arranged on the left side of the infrared receiving circuit, and the main power source and the loudspeaker are connected on the right side of the single chip microcomputer. All functions of a sensing doorbell can be operated through the infrared remote control unit, and the scheme has multiple selection mode functions like sensitivity control, sensing mode control, delay control and voltage comparison; when the infrared remote control unit does not have a battery or loses, the functions can be switched normally, and the doorbell is high in sensing signal, high in intelligentization level, high in direction recognition sensing accuracy, resistant to interference, crosstalk-preventive, high in false alarm resistance, free of radiation, high in safety, flexible to mount and low in production cost.

Description

technical field [0001] The invention relates to a dual-window integrated high-precision anti-jamming anti-crosstalk remote control direction-sensing doorbell scheme. Background technique [0002] The traditional sensor doorbell cannot recognize the direction of people entering or leaving the door. As long as it senses a person walking at the door, it will ring. In this case, the doorbell often rings not only wastes power resources, but also brings certain troubles to the user. Therefore, when the user hears the doorbell ringing, he does not know whether someone is coming in or going out, or just someone is passing by at the door, and its unrecognizable function greatly brings inconvenience to the user. In order to solve this problem, people later developed recognizable doorbells and devices. For example, the Chinese patent number is "200420098505.8", and the patent name is "New Identification Doorbell". The direction is identified by blocking the induction signal by the obj...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the above problems, the applicant once published a patent No. "201320251579.X", and the patent name is "An induction doorbell that supports remote control to change the recognizable direction of voice". Although it solves the problem that the doorbell cannot be recognized, its It can only change and switch multiple voices, and cannot adjust and control the induction control signal, nor can it delay the transmission of the induction control signal according to the needs of the user. Sensitivity control, sensing mode control, delay control, voltage comparison, intelligent control such as amplifying the sensing signal of the pyroelectric infrared sensing head, and its anti-interference and anti-interference functions can be further enhanced

[0008] Although infrared has a strong directionality, it will also be partially blocked by obstacles and cannot be accurately sensed. Therefore, if we can develop a method that can solve the problem of partial blocking by adjusting the angle, the installation flexibility will be strong, and the infrared rays will be guaranteed. The direction recognition doorbell with strong induction signal, strong anti-interference and anti-jamming ability has become an urgent problem to be solved in the development of the electronic doorbell industry.

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