CN211183930U

CN211183930U - Infrared remote control switch based on singlechip

Info

Publication number: CN211183930U
Application number: CN201922222795.1U
Authority: CN
Inventors: 程秋凤; 谢赞福; 罗敏华
Original assignee: Guangzhou Huaxia Vocational College
Current assignee: Guangzhou Huaxia Vocational College
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-08-04
Anticipated expiration: 2029-12-12

Abstract

The utility model discloses an infrared remote control switch based on a single chip microcomputer, which comprises an external signal transmitting terminal; an infrared signal receiving end; the infrared signal transmitting end comprises an instruction coding module, a first signal modulator, a first single chip microcomputer and an infrared transmitter, wherein the instruction coding module is electrically connected with the first signal modulator, the first signal modulator is electrically connected with the first single chip microcomputer, and the first single chip microcomputer is electrically connected with the infrared transmitter; through setting up instruction coding module and instruction decoding module, its can be better prevent that it from appearing the erroneous judgement when using, simultaneously through the use of first singlechip and second singlechip, convenience when having strengthened its whole use has also greatly reduced the complexity of circuit for its equipment and whole system architecture are simple and convenient more.

Description

Infrared remote control switch based on singlechip

Technical Field

The utility model relates to an infrared remote switch technical field specifically is an infrared remote switch based on singlechip.

Background

The infrared remote control technology not only greatly improves the labor productivity and reduces the cost, but also lightens the labor intensity of people and improves the labor conditions. The infrared remote controller has the characteristics of small volume, low power consumption, strong function, low cost and the like, thereby becoming a very popular control mode at present.

However, when the remote control in the prior art is used, due to the defects of the structure of the remote control, the circuit of the remote control is complex and the operating system is complex, the remote control is troublesome to assemble, and the requirements of the prior art cannot be met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an infrared remote switch based on singlechip to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an infrared remote control switch based on a single chip microcomputer comprises an infrared signal transmitting end; an infrared signal receiving end; the infrared signal transmitting end comprises an instruction coding module, a first signal modulator, a first single chip microcomputer and an infrared transmitter, wherein the instruction coding module is electrically connected with the first signal modulator, the first signal modulator is electrically connected with the first single chip microcomputer, and the first single chip microcomputer is electrically connected with the infrared transmitter;

the infrared signal receiving end comprises an infrared receiver, a preamplifier, a second signal modulator, an instruction decoding module and a second single chip microcomputer, wherein the infrared receiver is electrically connected with the preamplifier, the preamplifier is electrically connected with the second signal modulator, the second signal modulator is electrically connected with the instruction decoding module, and the instruction decoding module is electrically connected with the second single chip microcomputer.

Preferably, the infrared signal transmitting terminal further includes: an instruction input keyboard; the instruction input keyboard is electrically connected with the instruction coding module.

Preferably, the infrared signal receiving end further includes: an execution command module; and the execution command module is electrically connected with the second singlechip.

Preferably, the infrared emitter is selected from an infrared light emitting diode which emits infrared rays with the wavelength of 920 nm and 980 nm.

Preferably, the infrared receiver is a photodiode.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a set up instruction coding module and instruction decoding module, its can be better when using prevent that it from appearing the erroneous judgement, simultaneously through the use of first singlechip and second singlechip when using, the convenience when having strengthened its whole use also greatly reduced the complexity of circuit for its equipment and whole system architecture are simple and convenient more.

Drawings

FIG. 1 is a schematic diagram of the overall system connection of the present invention;

fig. 2 is a structural diagram of an infrared signal transmitting end circuit of the present invention;

fig. 3 is the circuit structure diagram of the infrared signal receiving terminal of the present invention.

In the figure: 1. an infrared signal transmitting terminal; 11. an instruction input keyboard; 12. an instruction encoding module; 13. a first signal modulator; 14. a first single chip microcomputer; 15. an infrared emitter; 2. an infrared signal receiving end; 21. an infrared receiver; 22. a preamplifier; 23. a second signal modulator; 24. an instruction decoding module; 25. a second single chip microcomputer; 26. the command is executed.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: an infrared remote control switch based on a single chip microcomputer comprises an infrared signal transmitting terminal 1; an infrared signal receiving end 2; the infrared signal transmitting terminal 1 comprises an instruction coding module 12, a first signal modulator 13, a first single chip microcomputer 14 and an infrared emitter 15, wherein the instruction coding module 12 is electrically connected with the first signal modulator 13, the first signal modulator 13 is electrically connected with the first single chip microcomputer 14, and the first single chip microcomputer 14 is electrically connected with the infrared emitter 15.

The infrared signal transmitting terminal adopts a code modulation remote control mode, the code modulation is to carry out orthogonal coding on signals, different signals are distinguished by using the orthogonal characteristic in mathematics, the signals are not divided in frequency, time and space, and the receiving terminal identifies and selects the required signals according to the corresponding code patterns. The code-modulated infrared remote control is that the command signal generating circuit represents different control commands by different pulse codes and different pulse numbers and combinations. When different command keys are pressed, the command signal circuit generates command signals with different pulse codes, namely codes are carried out, then the command signals are modulated by the modulation circuit to become coded pulse code pulse modulation signals, and then the driving circuit drives the infrared emitter to emit infrared signals.

The infrared signal receiving end 2 comprises an infrared receiver 21, a preamplifier 22, a second signal modulator 23, an instruction decoding module 24 and a second single chip microcomputer 25, wherein the infrared receiver 21 is electrically connected with the preamplifier 22, the preamplifier 22 is electrically connected with the second signal modulator 23, the second signal modulator 23 is electrically connected with the instruction decoding module 24, and the instruction decoding module 24 is electrically connected with the second single chip microcomputer 25.

The second signal modulator 23 is used for demodulating a circuit, so as to avoid the occurrence of conditions such as interference caused by external sudden light change to a receiving circuit, and the occurrence of misjudgment of the anti-interference capability of the system.

The infrared signal transmitting terminal 1 further comprises: an instruction input keyboard 11; the instruction input keyboard 11 is electrically connected with the instruction coding module 12.

The infrared signal receiving end 2 further comprises: an execute command module 26; the command execution module 26 is electrically connected to the second single chip 25.

The infrared emitter 15 selects infrared light emitting diodes to emit infrared rays with wavelengths of 920 nm and 980nm, and the infrared receiver 21 selects photosensitive diodes.

The working principle is as follows: when in use, the infrared signal transmitter 1 adopts a code modulation remote control mode, the code modulation is to carry out orthogonal coding on signals, different signals are distinguished by using the orthogonal characteristic in mathematics, the signals are not divided in frequency, time and space, and a receiving end identifies and selects the required signals according to corresponding code patterns. The code-modulated infrared remote control is that the command signal generating circuit represents different control commands by different pulse codes (different pulse numbers and combinations). When different command keys are pressed, the command signal circuit generates command signals with different pulse codes, namely codes are carried out, then the command signals are modulated by the modulation circuit to become coded pulse code pulse modulation signals, and then the driving circuit drives the infrared emitter to emit infrared signals. The command signal and detection circuit in the infrared remote control system is composed of a coding circuit and a decoding circuit in a code modulation system, and a modulation and demodulation process is needed, because the frequency of coding pulses of the code modulation system is extremely low, the signals are amplified by a preamplifier 22 after being received for ultralow frequency, are demodulated by a second signal modulator 23, are decoded by a command decoding module 24, and are controlled by a second singlechip 25 to be executed by an execution command module 26.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an infrared remote switch based on singlechip which characterized in that includes:

an infrared signal transmitting terminal (1);

an infrared signal receiving end (2);

the infrared signal transmitting terminal (1) comprises an instruction coding module (12), a first signal modulator (13), a first single chip microcomputer (14) and an infrared transmitter (15), wherein the instruction coding module (12) is electrically connected with the first signal modulator (13), the first signal modulator (13) is electrically connected with the first single chip microcomputer (14), and the first single chip microcomputer (14) is electrically connected with the infrared transmitter (15);

the infrared signal receiving end (2) comprises an infrared receiver (21), a preamplifier (22), a second signal modulator (23), an instruction decoding module (24) and a second single chip microcomputer (25), the infrared receiver (21) is electrically connected with the preamplifier (22), the preamplifier (22) is electrically connected with the second signal modulator (23), the second signal modulator (23) is electrically connected with the instruction decoding module (24), and the instruction decoding module (24) is electrically connected with the second single chip microcomputer (25).

2. The infrared remote switch based on the single chip microcomputer according to claim 1, wherein the infrared signal transmitting terminal (1) further comprises:

an instruction input keyboard (11);

the instruction input keyboard (11) is electrically connected with the instruction coding module (12).

3. The infrared remote switch based on the single chip microcomputer according to claim 1, wherein the infrared signal receiving terminal (2) further comprises:

an execution command module (26);

the command execution module (26) is electrically connected with the second singlechip (25).

4. The infrared remote control switch based on the single chip microcomputer according to claim 1, wherein: the infrared emitter (15) is characterized in that the wavelength of infrared rays emitted by infrared light emitting diodes is 920 nm and 980 nm.

5. The infrared remote control switch based on the single chip microcomputer according to claim 1, wherein: the infrared receiver (21) is a photosensitive diode.