CN107566031A - Data transmitting, method of reseptance and the device of 433M radio communications - Google Patents
Data transmitting, method of reseptance and the device of 433M radio communications Download PDFInfo
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Abstract
The present invention is applied to wireless communication technology field, there is provided a kind of data of 433M radio communications are launched, method of reseptance and device, the data emitting method include：When carrying out data transmitting, hardware-initiated code, delay code are sequentially output；It is defeated after rolling in delay code, data frame is launched in the way of byte；After the data frame has been launched, end of output code；Wherein, 8 positions of a byte represent 8 amounts.The present invention improves the communication efficiency of 433M radio communications, and the 433M wireless communication technologys after improvement, independent of hardware, cost is low, is advantageous to the popularization and application of 433M wireless communications products, and be particularly suitable for use in intelligent lighting.
Description
Technical field
The invention belongs to data transmitting, the recipient of wireless communication technology field, more particularly to a kind of 433M radio communications
Method and device.
Background technology
At present, as the development of Internet of Things, smart home, applying for wireless communication technology have played weight in different fields
The effect wanted.Existing Wi-Fi, bluetooth connection, the effect through walls of ZigBee and infrared technique are poor, and cost is high；And 433M is penetrated
The effect through walls of frequency technology is good, and cost can control, and therefore, the wireless solution of intelligent lighting industry generally selects excellent 433M videos
Technology.
However, existing 433M radio communications encoding and decoding technique is mostly by hard-wired, such as American TI Company
CC1101 chips, the SI4432 chips etc. of Silabs companies, developer can not optimize to bottom encoding and decoding algorithm, 433M
The interference free performance of radio communication is general, and cost is high.And 2272/2262 433M radio communication codec chips, although into
This is than relatively low, but the encoding and decoding technique uses 8 states to represent that 3 are measured, and communication efficiency is low；And can not effectively solve 433M
Frequency range is disturbed problem.
The content of the invention
In consideration of it, the embodiment of the present invention provides data transmitting, method of reseptance and the device of a kind of 433M radio communications, to carry
The communication efficiency and antijamming capability of high 433M radio communications.
First aspect, there is provided a kind of data emitting method of 433M radio communications, the data emitting method include：
When carrying out data transmitting, hardware-initiated code, delay code are sequentially output；
It is defeated after rolling in the delay code, data frame is launched in the way of byte；
After the data frame has been launched, end of output code；
Wherein, 8 positions of a byte represent 8 amounts.
Second aspect, there is provided a kind of data receiver method of 433M radio communications, the data receiver method include：
When carrying out data receiver, processing is filtered to signal of communication, and judges whether to receive reception code；
When receiving reception code, then data frame is received in the way of byte；
Wherein, 8 positions of a byte represent 8 amounts.
The third aspect, there is provided a kind of data sending apparatus of 433M radio communications, the data sending apparatus include：
Starting module, for when carrying out data transmitting, being sequentially output hardware-initiated code, delay code；
Byte transmission module, for it is described delay code it is defeated after rolling, data frame is launched in the way of byte；
Launch terminate module, for after the data frame has been launched, end of output code；
Wherein, 8 positions of a byte represent 8 amounts.
Compared with prior art, the embodiment of the present invention improves the code encoding/decoding mode of 433M radio communications；By carry out
When data are launched, hardware-initiated code, delay code are sequentially output；And it is defeated after rolling in the delay code, sent out in the way of byte
Penetrate data frame；After the data frame has been launched, then end of output code；Wherein, 8 positions of a byte represent 8 amounts respectively；
So as to improve the communication efficiency of 433M radio communications, and the 433M wireless communication technologys after improvement are independent of hardware, cost
It is low, be advantageous to the popularization and application of 433M wireless communications products.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the implementation process figure of the data emitting method of 433M radio communications provided in an embodiment of the present invention；
Fig. 2 is the time diagram of hardware-initiated code provided in an embodiment of the present invention；
Fig. 3 is the time diagram of launch code provided in an embodiment of the present invention；
Fig. 4 is that the sequential provided in an embodiment of the present invention for being carried out continuously twice emitting to data frame in the way of byte is shown
It is intended to；
Fig. 5 is the implementation process figure of the data receiver method of 433M radio communications provided in an embodiment of the present invention；
Fig. 6 is the composition structure chart of the data sending apparatus of 433M radio communications provided in an embodiment of the present invention；
Fig. 7 is the composition structure chart of the data sink of 433M radio communications provided in an embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The embodiment of the present invention improves the code encoding/decoding mode of 433M radio communications；By when carrying out data transmitting, successively
Output hardware start code, delay code；And it is defeated after rolling in the delay code, data frame is launched in the way of byte；Described
After data frame has been launched, then end of output code；Wherein, 8 positions of a byte represent 8 amounts respectively；So as to improve 433M
The communication efficiency of radio communication, and the 433M wireless communication technologys after improving, independent of hardware, cost is low, be advantageous to 433M without
The popularization and application of line communication products.The embodiment of the present invention additionally provide corresponding 433M radio communications data sending apparatus,
The data receiver method and device of 433M radio communications.It is described in detail individually below.
Fig. 1 shows the data emitting method of 433M radio communications provided in an embodiment of the present invention.
In embodiments of the present invention, the data emitting method is applied to singlechip chip etc., the singlechip chip bag
Include but be not limited to 8051 core single-chip microcomputers, STC single-chip microcomputers etc..
Refering to Fig. 1, the data emitting method of the 433M radio communications includes：
In step S101, when carrying out data transmitting, hardware-initiated code, delay code are sequentially output.
Herein, when needing outwards transmitting data frame, output hardware start code, the hardware-initiated code are used to open first
The dynamic hardware device for carrying out 433M radio communications.As the preferred exemplary of the present invention, Fig. 2 shows that the embodiment of the present invention carries
The time diagram of the hardware-initiated code supplied.In fig. 2, the hardware-initiated code passes through 100 μ s low level, 100 μ s height
Level and 1ms low level represent.Output hardware start code is that outwards 100 μ s of output low level, 100 μ s height are electric successively
Flat and 1ms low level.Herein, μ s represent microsecond, and ms represents millisecond.
The delay code is used to ensure the launch stability for starting RF bottom chips.In actual applications, 5ms can be passed through
Low level represent.
In step s 102, it is defeated after rolling in delay code, data frame is launched in the way of byte.
As a preferred embodiment of the present invention, step S102 is specifically included：
Export launch code；
Then first time transmitting is carried out to data frame in the way of byte.
Herein, the launch code, which is used for instruction equipment, needs outwards transmitting data frame.Exemplarily, Fig. 3 shows this
The time diagram for the launch code that inventive embodiments provide.In figure 3, the launch code is 4.5ms high level, 4.5ms
Low level.Therefore, when outwards output high level, and being delayed to 4.5ms, then low level is exported, and be delayed to 4.5ms, that is, represented
Export launch code.The high level, low level can allow ± 0.5ms error.
After output launch code completion transmitting is ready, for each data frame to be launched, the embodiment of the present invention uses
The mode of byte cycle is launched.The transmitting data frame includes：
Send synchronous code；
After synchronous code has been sent, launch the data message of a byte；
Above-mentioned steps are circulated, until the data frame has been launched.
As the preferred exemplary of the present invention, the synchronous code can be represented by 4ms high level.The present invention is implemented
There is the situation of mess code by setting synchronous code in example when realizing byte of sync, and preventing byte long.Exported in synchronous code
After complete, then launch the data message of a byte, including：According to when ordered pair byte on each position carry out coded excitation；Its
In, when the state of position is 1, exports high level and be delayed to 1.6ms, then export low level and be delayed to 0.5ms；When the shape of position
When state is 0, then exports high level and be delayed to 0.5ms, then export low level and be delayed to 1.6ms；The high level, low level
Permission ± 0.1ms errors.The embodiment of the present invention represents 8 amounts by 8 positions of a byte, wireless so as to improve 433M
The communication efficiency of communication, 62.5% is higher by relative to 2262/2272 encoding and decoding technique.
In step s 103, after the data frame has been launched, end of output code.
In embodiments of the present invention, this transmitting to a data frame of end of output representation has been completed.
Further, it is defeated after rolling in delay code in order to ensure the reliability of data transfer, can be in the way of byte
Twice emitting is carried out continuously to data frame.The step S102 can also include：After output is delayed code, launch code is exported, is pressed
First time transmitting is carried out to data frame according to the mode of byte；After once having launched, launch code is exported again, according to the side of byte
Formula carries out second to data frame and launched.As the preferred exemplary of the present invention, Fig. 4 shows provided in an embodiment of the present invention
The time diagram of twice emitting is carried out continuously to data frame in the way of byte.The data frame is to include 10 bytes, is supplied
80Bit (position).
In summary, the data emitting method of 433M radio communications provided in an embodiment of the present invention passes through the 8 of a byte
Individual position represents 8 amounts, so as to improve the communication efficiency of 433M radio communications；And independent of hardware, application cost is low, favorably
In the popularization and application of 433M wireless communications products, it is particularly suitable for use in intelligent lighting.
Fig. 5 shows the data receiver method of 433M radio communications provided in an embodiment of the present invention.
In embodiments of the present invention, the data receiver method is corresponding with the data emitting method described in Fig. 1 embodiments,
Singlechip chip etc. is can apply to, the singlechip chip includes but is not limited to 8051 core single-chip microcomputers, STC single-chip microcomputers.
Refering to Fig. 5, the data receiver method of the 433M radio communications includes：
In step S501, when carrying out data receiver, processing is filtered to signal of communication, and judge whether to receive
Receive code.
Herein, when receiving data frame from the external world, processing is filtered to signal of communication first, to carry out interference signal
Identification and filtering.Exemplarily, it is described to signal of communication be filtered processing can include it is following in one kind or its
Meaning combination：
High-frequency Interference filtering is carried out to signal of communication, to filter out the pulse for being less than 400 μ s；
Low-frequency disturbance filtering is carried out to signal of communication, to filter out the pulse for being more than 6ms；
High level of interference filtering is carried out to signal of communication, to filter out the pulse of non-default high level.
Specifically, in actual applications, when the high level received is pulse less than 400 μ s, then this sequential is terminated
Reception and judgement, to filter out High-frequency Interference information.When the high level received is pulse more than 6ms, then when terminating this
The reception and judgement of sequence, to filter out low-frequency disturbance information.When the high level received is not default high level, then terminate this
The reception and judgement of sequential, to filter out high level of interference information.Wherein, the default high level include but is not limited to 6ms, 4ms,
1.5ms and/or 0.5ms.While carrying out the identification of interference signal and filtering out, judge whether to receive reception code.
As the preferred exemplary of the present invention, the code that receives can be represented by 4.2ms-5.0ms high level.Cause
This, judges whether that receiving reception code can be：Whether the high level signal for judging to receive is more than 4.2ms, and is less than 5ms.
If so, being then judged to receiving reception code, step S502 is performed.
In step S502, when receiving reception code, data frame is received in the way of byte；Wherein, a byte
8 positions represent 8 amount.
With data transmitting method it is corresponding, in embodiments of the present invention, it is described received in the way of byte it is to be received
Data frame includes：
Receive synchronous code；
If the synchronous code is 4ms high level, the data message of a byte is received；
Above-mentioned steps are circulated, until a data frame receipt is complete.
In embodiments of the present invention, each position in byte is used to represent an amount, therefore 8 positions of a byte can
To represent 8 amounts.Corresponding with the method for data transmitting, when receiving 1.6ms high level, expression have received 1, then by word
The present bit of section is arranged to 1；When receiving 0.5ms high level, expression have received 0, then sets the present bit of byte
For 0；So as to complete the reception of data frame, the efficiency of transmission of 433M radio communications is effectively improved.
Alternatively, methods described can also include：
After a data frame receipt is complete, end of output code.
Herein, end code is used to represent that a data frame has received, can be by 500ms low level come table
Show.
In summary, the embodiment of the present invention before data frame is received by increasing the identification of interference signal and filtering out, by height
Frequency interference signal, low-frequency interference signal, non-default high level signal filter out, so as to improve the anti-interference energy of 433M radio communications
Power.And 8 amounts are represented by 8 positions of a byte, it is effectively improved the efficiency of transmission of 433M radio communications.Further
Ground, the data receiver method of 433M radio communications provided in an embodiment of the present invention need not rely upon proprietary hardware, pass through low cost
8051 singlechip chips can also realize that application cost is low, be advantageous to the popularization and application of 433M wireless communications products, it is especially suitable
In intelligent lighting.
Fig. 6 shows the composition structure of the data sending apparatus of 433M radio communications provided in an embodiment of the present invention, in order to
It is easy to illustrate, illustrate only the part related to the embodiment of the present invention.
In embodiments of the present invention, the data sending apparatus of the 433M radio communications is used to realize above-mentioned Fig. 1 embodiments
Described in 433M radio communications data emitting method, can apply to singlechip chip, the singlechip chip include but
It is not limited to 8051 core single-chip microcomputers, STC single-chip microcomputers.
Refering to Fig. 6, the data sending apparatus of the 433M radio communications includes：
Starting module 61, for when carrying out data transmitting, being sequentially output hardware-initiated code, delay code；
Byte transmission module 62, for it is described delay code it is defeated after rolling, data frame is launched in the way of byte；
Launch terminate module 63, for after the data frame has been launched, end of output code；
Wherein, 8 positions of a byte represent 8 amounts.
Herein, the hardware-initiated code is used for the hardware device for being actuated for 433M radio communications.As the present invention's
One preferred exemplary, the hardware-initiated code pass through 100 μ s low level, 100 μ s high level and 1ms low level table
Show.Output hardware start code is outwards to export 100 μ s low level, 100 μ s high level and 1ms low level successively.
The delay code is used to ensure the launch stability for starting RF bottom chips, can be represented by 5ms low level.
Further, the byte transmission module 62 specifically includes：
Launch code output unit 621, for exporting launch code；
Data frame transmitter unit 622, for carrying out first time transmitting to data frame in the way of byte.
Herein, the launch code, which is used for instruction equipment, needs outwards transmitting data frame.One as the present invention is preferably
Example, the launch code can be represented by 4.5ms high level, 4.5ms low level.Therefore, in actual applications, outwards
High level is exported, and is delayed to 4.5ms, then exports low level, and is delayed to 4.5ms, that is, represents launch code.Herein, it is described
High level, low level can allowable error ± 0.5ms.
Further, the data frame transmitter unit 622 includes：
Synchronous code transmitter unit 6221, for launching synchronous code；
Byte transmission unit 6222, for after synchronous code has been launched, launching the data message of a byte.
Wherein, the byte transmission unit 6222 is specifically used for：
According to when ordered pair byte on each position carry out coded excitation；
Wherein, when the state of position is 1, export high level and be delayed to 1.6ms, then export low level and be delayed extremely
0.5ms；
When the state of position is 0, exports high level and be delayed to 0.5ms, then export low level and be delayed to 1.6ms；
High level, low level allow ± 0.1ms errors.
In embodiments of the present invention, each position in byte is used to represent an amount, therefore 8 positions of a byte can
To represent 8 amounts, the efficiency of transmission of 433M radio communications is effectively improved.The data of the 433M radio communications after improvement
Emitter need not rely upon proprietary hardware, can apply to 8051 singlechip chips of low cost, so as to further reduce
The costs of 433M wireless communication technologys, is advantageous to the popularization of 433M wireless communications products, is particularly suitable for use in intelligent lighting.
Further, the launch code output unit 621 is additionally operable to：
After having launched for the first time, launch code is exported again；
The data frame transmitter unit 622 is additionally operable to：
Second is carried out in the way of byte to data frame to launch.
By being carried out continuously twice emitting to data frame, effectively ensure the reliability of data transfer.
Fig. 7 shows the composition structure of the data sink of 433M radio communications provided in an embodiment of the present invention, in order to
It is easy to illustrate, illustrate only the part related to the embodiment of the present invention.
In embodiments of the present invention, the data sink of the 433M radio communications is used to realize above-mentioned Fig. 7 embodiments
Described in 433M radio communications data receiver method, it is corresponding with the data sending apparatus of 433M radio communications, can apply
In singlechip chip.The singlechip chip includes but is not limited to 8051 core single-chip microcomputers, STC single-chip microcomputers.
Refering to Fig. 7, the data sink of the 433M radio communications includes：
Filtration module 71, for when carrying out data receiver, processing being filtered to signal of communication, and judge whether to receive
To reception code；
Byte receiving module 72, for when receiving reception code, then receiving data frame in the way of byte；
Wherein, 8 positions of a byte represent 8 amounts.
Further, one kind or its any combination that the filtration module 71 is used to carry out in following filtering process：
High-frequency Interference filtering is carried out to signal of communication, to filter out the pulse for being less than 400 μ s；
Low-frequency disturbance filtering is carried out to signal of communication, to filter out the pulse for being more than 6ms；
High level of interference filtering is carried out to signal of communication, to filter out the pulse of non-default high level.
Exemplarily, in embodiments of the present invention, what is received is judged in real time to High-frequency Interference, the filtration module 71
Whether high level is less than 400 μ s pulse, if so, then terminating the reception and judgement of this sequential, to filter out High-frequency Interference letter
Breath.For low-frequency disturbance, whether high level that the filtration module 71 judges to receive in real time is pulse more than 6ms, if
It is the reception and judgement for then terminating this sequential, to filter out low-frequency disturbance information.For high level of interference, the filtration module
Whether 71 high level for judging to receive in real time are default high level, if it is not, then terminate the reception and judgement of this sequential, with
Filter out high level of interference information.Wherein, the default high level includes but is not limited to 6ms, 4ms, 1.5ms and/or 0.5ms.
While carrying out the identification of interference signal and filter out, whether the filtration module 81 also real-time judge receives reception code.
As the preferred exemplary of the present invention, the code that receives can be represented by 4.2ms-5.0ms high level.Sentence
Disconnected whether receive receives code and can be：Whether the high level signal for judging to receive is more than 4.2ms, and is less than 5ms.If so,
Then it is judged to receiving reception code, byte receiving module 72 starts the reception of byte.
Further, the byte receiving module 72 includes：
Synchronous code receiving unit 721, for receiving synchronous code；
Byte receiving unit 722, if for the synchronous code be 4ms high level when, receive a byte data
Information.
Further, byte receiving unit 722 is specifically used for：
When receiving 1.6ms high level, the present bit of byte is arranged to 1；
When receiving 0.5ms high level, the present bit of byte is arranged to 0.
In embodiments of the present invention, each position in byte is used to represent an amount, therefore 8 positions of a byte can
To represent 8 amounts, so as to be effectively improved the communication efficiency of 433M radio communications.
In summary, the embodiment of the present invention before data frame is received by increasing the identification of interference signal and filtering out, by height
Frequency interference signal, low-frequency interference signal, non-default high level signal filter out, so as to improve the anti-interference energy of 433M radio communications
Power；And 8 amounts are represented by 8 positions of a byte, it is effectively improved the communication efficiency of 433M radio communications.Further
Ground, the data emitting method of 433M radio communications provided in an embodiment of the present invention need not rely upon proprietary hardware, pass through low cost
8051 singlechip chips can also realize, create a further reduction the cost of 433M wireless communication technologys, it is wireless to be advantageous to 433M
The popularization of communication products, is particularly suitable for use in intelligent lighting.
It should be noted that the device in the embodiment of the present invention can be used for realizing whole skills in above method embodiment
Art scheme, the function of its each functional module can be implemented according to the method in above method embodiment, and it is implemented
Process can refer to the associated description in examples detailed above, and here is omitted.
Those of ordinary skill in the art are it is to be appreciated that the list of each example described with reference to the embodiments described herein
Member and algorithm steps, it can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
Performed with hardware or software mode, application-specific and design constraint depending on technical scheme.Professional and technical personnel
Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed
The scope of the present invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the device of foregoing description
With the specific work process of unit, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.
In several embodiments provided herein, it should be understood that the data hair of disclosed 433M radio communications
Penetrate, method of reseptance and device, can realize by another way.For example, device embodiment described above is only to show
Meaning property, for example, the division of the module, unit, only a kind of division of logic function, can have other when actually realizing
Dividing mode, such as multiple units or component can combine or be desirably integrated into another system, or some features can neglect
Slightly, or do not perform.Another, shown or discussed mutual coupling or direct-coupling or communication connection can be passed through
The INDIRECT COUPLING of some interfaces, device or unit or communication connection, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit, module in each embodiment of the present invention can be integrated in a processing unit,
Can be that unit, module are individually physically present, can also two or more units, module be integrated in a unit
In.
If the function is realized in the form of SFU software functional unit and is used as independent production marketing or in use, can be with
It is stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially in other words
The part to be contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are causing a computer equipment (can be
People's computer, server, or network equipment etc.) perform all or part of step of each embodiment methods described of the present invention.
And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
1. a kind of data emitting method of 433M radio communications, it is characterised in that the data emitting method includes：
When carrying out data transmitting, hardware-initiated code, delay code are sequentially output；
It is defeated after rolling in the delay code, data frame is launched in the way of byte；
After the data frame has been launched, end of output code；
Wherein, 8 positions of a byte represent 8 amounts.
2. the data emitting method of 433M radio communications as claimed in claim 1, it is characterised in that the side according to byte
Formula transmitting data frame includes：
Export launch code；
Then first time transmitting is carried out to data frame in the way of byte.
3. the data emitting method of 433M radio communications as claimed in claim 2, it is characterised in that transmitting data frame includes：
Launch synchronous code；
After synchronous code has been launched, launch the data message of a byte；
Above-mentioned steps are circulated, until a data frame has been launched.
4. the data emitting method of 433M radio communications as claimed in claim 3, it is characterised in that described to launch in synchronous code
After complete, the data message of one byte of transmitting includes：
According to when ordered pair byte on each position carry out coded excitation；
Wherein, when the state of position is 1, export high level and be delayed to 1.6ms, then export low level and be delayed to 0.5ms；
When the state of position is 0, exports high level and be delayed to 0.5ms, then export low level and be delayed to 1.6ms；
High level, low level allow ± 0.1ms errors.
5. the data emitting method of the 433M radio communications as described in any one of claim 2 to 4, it is characterised in that described to press
Launch data frame according to the mode of byte and also include：
After having launched for the first time, launch code is exported again, and then carrying out second to data frame in the way of byte launches.
A kind of 6. data receiver method of 433M radio communications, it is characterised in that the data receiver method includes：
When carrying out data receiver, processing is filtered to signal of communication, and judges whether to receive reception code；
When receiving reception code, then data frame is received in the way of byte；
Wherein, 8 positions of a byte represent 8 amounts.
7. the data receiver method of 433M radio communications as claimed in claim 6, it is characterised in that described to enter to signal of communication
Row filtering process include it is following in one kind or its any combination：
High-frequency Interference filtering is carried out to signal of communication, to filter out the pulse for being less than 400 μ s；
Low-frequency disturbance filtering is carried out to signal of communication, to filter out the pulse for being more than 6ms；
High level of interference filtering is carried out to signal of communication, to filter out the pulse of non-default high level.
8. the data receiver method of 433M radio communications as claimed in claim 6, it is characterised in that the side according to byte
Formula, which receives data frame, to be included：
Receive synchronous code；
If the synchronous code is 4ms high level, the data message of a byte is received；
Above-mentioned steps are circulated, until a data frame receipt is complete.
9. the data receiver method of 433M radio communications as claimed in claim 8, it is characterised in that one byte of the reception
Data message include：
When receiving 1.6ms high level, the present bit of byte is arranged to 1；
When receiving 0.5ms high level, the present bit of byte is arranged to 0.
10. a kind of data sending apparatus of 433M radio communications, it is characterised in that the data sending apparatus includes：
Starting module, for when carrying out data transmitting, being sequentially output hardware-initiated code, delay code；
Byte transmission module, for it is described delay code it is defeated after rolling, data frame is launched in the way of byte；
Launch terminate module, for after the data frame has been launched, end of output code；
Wherein, 8 positions of a byte represent 8 amounts.
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