CN114863666B - Infrared remote control carrier-free coding method - Google Patents
Infrared remote control carrier-free coding method Download PDFInfo
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- CN114863666B CN114863666B CN202210637673.2A CN202210637673A CN114863666B CN 114863666 B CN114863666 B CN 114863666B CN 202210637673 A CN202210637673 A CN 202210637673A CN 114863666 B CN114863666 B CN 114863666B
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000001360 synchronised effect Effects 0.000 claims 1
- 230000006698 induction Effects 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 9
- 239000012050 conventional carrier Substances 0.000 description 3
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013524 data verification Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
- H04L1/0083—Formatting with frames or packets; Protocol or part of protocol for error control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1806—Go-back-N protocols
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses an infrared remote control carrier-free coding method, which comprises the following steps: the infrared remote control sending end sends a complete data frame, and the complete data frame structure comprises: 1 bit synchronization bit, 8 bit user check code, 8 bit user code, 8 bit data check code, 8 bit data code, 1 bit end bit; after receiving the data frame, the infrared remote control receiving end respectively checks the user check code and the user code and the data check code and the data code; and the infrared remote control sending end repeatedly sends the complete data frame. The invention has simple coding rule, short single code time and less data bits of the data frame, and greatly improves the decoding timeliness of the remote control receiving end; the coding method of the invention is compatible with the infrared receiving tube of the control panel of the infrared induction product, does not need to additionally increase an infrared receiving head and other hardware circuits, adapts to the characteristic of intermittent work of the infrared induction product, reduces the detection time of the remote control signal of the remote control receiving end and keeps the low energy consumption characteristic of the control panel.
Description
Technical Field
The invention relates to the technical field related to communication coding, in particular to an infrared remote control carrier-free coding method.
Background
In reality, a plurality of infrared induction products have the infrared remote control function in order to realize the contact-free setting of working parameters, improve the production debugging efficiency and facilitate daily maintenance. According to the existing carrier coding method, an infrared receiving head is required to be added to complete the amplification and demodulation of the remote control signal, and a system block diagram, a data frame structure diagram and a data bit definition diagram of the carrier coding method are respectively shown in fig. 1, 2 and 3.
In order to realize the infrared sensing function, an infrared receiving tube is used on a control panel of the control circuit of the infrared sensing product. If the infrared receiving tube can be used, the infrared induction type product can be added with the infrared remote control function without adding an infrared receiving head and other hardware circuits. However, the infrared receiving tube does not have the carrier demodulation function, so the invention can well solve the problem by adopting a carrier-free coding method based on the above.
Disclosure of Invention
The present invention aims to provide a carrier-free encoding method for infrared remote control, so as to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
an infrared remote control carrier-free coding method comprises the following steps:
1. the infrared remote control sending end sends a complete data frame, and the complete data frame structure comprises: 1 bit synchronization bit, 8 bit user check code, 8 bit user code, 8 bit data check code, 8 bit data code, 1 bit end bit; pulse duty ratio of each data bit: 100/850 of synchronization bit, 100/400 of end bit, 100/600 of binary data bit "1", 100/350 of binary data bit "0";
2. after receiving the data frame, the infrared remote control receiving end respectively verifies the user check code and the user code and the data check code and the data code;
3. and the infrared remote control sending end repeatedly sends the complete data frame.
As a further scheme of the invention: in step 2, after receiving the data frame, the infrared remote control receiving end respectively checks the user check code and the user code, and the data check code and the data code, and the method includes the following steps:
(31) After the user check code is negated, whether the user check code is equal to the user code or not is judged, and if not, the remote control is invalid;
(32) And then after the data check code is negated, judging whether the data check code is equal to the data code, if not, performing remote control invalidity, and if so, executing a corresponding remote control instruction.
As a further scheme of the invention: the user check code is the inverse code of the user code, and the data check code is the inverse code of the data code.
As a further scheme of the invention: in step 1, the definition of each data bit is as follows: the synchronization bits comprise a high level of 100us, a low level of 750 us; the end bit comprises a high level of 100us, a low level of 300 us; binary data bit "1" comprises a high level of 100us, a low level of 500 us; binary data bit "0" includes a high of 100us, a low of 250 us.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention has simple coding rule, short single code time and few data frame digits, and greatly improves the decoding time efficiency of the infrared remote control receiving end;
2. the coding method of the invention is compatible with the infrared receiving tube of the infrared induction product control panel, and does not need to additionally increase an infrared receiving head and other hardware circuits;
3. the coding method of the invention is suitable for the characteristic of intermittent work of the infrared induction product, reduces the detection time of the remote control signal of the infrared remote control receiving end and keeps the low energy consumption characteristic of the control panel;
4. the check code in the coding rule can greatly reduce the error rate in remote control operation and improve the reliability of operation.
Drawings
Fig. 1 is a system block diagram of a conventional carrier coding method.
Fig. 2 is a diagram illustrating a structure of a data frame in a conventional carrier coding method.
Fig. 3 is a diagram illustrating the definition of each data bit in the conventional carrier coding method.
Fig. 4 is a system block diagram of the carrier-less encoding method of the present invention.
Fig. 5 is a diagram of a data frame structure of the carrierless encoding method of the present invention.
FIG. 6 is a flowchart of a data verification method according to the present invention.
FIG. 7 is a diagram illustrating the definition of data bits in the carrierless encoding method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 4 to 7, in an embodiment of the present invention, an infrared remote control carrier-free encoding method includes the following steps:
1. the infrared remote control sending end sends a complete data frame, and the complete data frame structure comprises: 1 bit synchronization bit, 8 bit user check code, 8 bit user code, 8 bit data check code, 8 bit data code, 1 bit end bit, wherein the user check code is the code reversal of the user code, the data check code is the code reversal of the data code, in this process, the definition of each data bit: the synchronization bits comprise a high level of 100us, a low level of 750 us; the end bit comprises a high level of 100us, a low level of 300 us; binary data bit "1" comprises a high level of 100us, a low level of 500 us; binary data bit "0" comprises a high of 100us, a low of 250 us; the pulse duty ratio of each data bit is respectively: 100/850, 100/400, 100/600, 100/350. The high and low level time of each data bit can maximally allow a deviation of +/-20%.
2. After receiving the data frame, the infrared remote control receiving end respectively verifies the user check code and the user code and the data check code and the data code, specifically, after the user check code is negated, whether the user check code is equal to the user code or not is judged, and if not, the remote control is invalid; then after the data check code is negated, judging whether the data check code is equal to the data code or not, if not, performing remote control invalidity, and if so, executing a corresponding remote control instruction;
3. the infrared remote control sending end repeatedly sends the complete data frame so as to adapt to the characteristic of intermittent work of infrared induction type products.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. An infrared remote control carrier-free coding method is characterized in that: the method comprises the following steps:
(1) The infrared remote control sending end sends a complete data frame, and the complete data frame structure comprises: 1 bit synchronization bit, 8 bit user check code, 8 bit user code, 8 bit data check code, 8 bit data code, 1 bit end bit; pulse duty ratio of each data bit: 100/850 of synchronous bit, 100/400 of end bit, 100/600 of binary data bit of 1, 100/350 of binary data bit of 0;
(2) After receiving the data frame, the infrared remote control receiving end respectively checks the user check code and the user code and the data check code and the data code;
(3) And the infrared remote control sending end repeatedly sends the complete data frame.
2. The infrared remote control carrier-free coding method according to claim 1, characterized in that: in the step (2), after the infrared remote control receiving end receives the data frame, the method for respectively checking the user check code and the user code and the data check code and the data code comprises the following steps:
(31) After the user check code is negated, whether the user check code is equal to the user code or not is judged, and if not, the remote control is invalid;
(32) And then after the data check code is negated, judging whether the data check code is equal to the data code, if not, performing remote control invalidity, and if so, executing a corresponding remote control instruction.
3. The infrared remote control carrier-free coding method according to claim 2, characterized in that: the user check code is the inverse code of the user code, and the data check code is the inverse code of the data code.
4. The infrared remote control carrier-free coding method according to claim 1, characterized in that: in the step (1), the definition of each data bit is as follows: the synchronization bits comprise a high level of 100us, a low level of 750 us; the end bit comprises a high level of 100us, a low level of 300 us; binary data bit "1" comprises a high level of 100us, a low level of 500 us; binary data bit "0" includes a high level of 100us, a low level of 250 us.
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| JP2003046801A (en) * | 2001-07-31 | 2003-02-14 | Kenwood Corp | Remote controller |
| CN101877613B (en) * | 2010-06-18 | 2013-07-10 | 苏州本控电子科技有限公司 | Infrared communication method used for a remote controller |
| CN102509444B (en) * | 2011-12-09 | 2014-04-02 | 广东长虹电子有限公司 | Data transmission method |
| CN103390341A (en) * | 2013-07-15 | 2013-11-13 | 东南大学 | Touch technology-based universal infrared learning remote-control device and control method thereof |
| CN106877925A (en) * | 2017-01-09 | 2017-06-20 | 深圳市欢创科技有限公司 | A kind of point-to-point infrared communication method and system |
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