CN105790791B - The transfer approach of the unidirectional frequency hopping of wireless signal - Google Patents
The transfer approach of the unidirectional frequency hopping of wireless signal Download PDFInfo
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Abstract
The present invention provides the transfer approach and its method of reseptance of a kind of unidirectional frequency hopping of wireless signal, which includes a detecting step and a transfer step；When the transfer approach is by one control signal of transfer step transmission, an ambient noise using channel is quickly detected at the first time with one, and the second time for being more than the first time with one by the detecting step detects the environmental noise level of each channel, and the environmental noise level for storing each channel is used for next transfer step, delay time caused by thereby reducing transfer step detection, to reach the requirement of fast reaction.
Description
Technical field
The present invention provides a kind of unidirectional frequency hopping, the transfer approach of espespecially a kind of unidirectional frequency hopping of wireless signal.
Background technology
When being generally remotely controlled by wireless signal, signal is emitted to a controlled terminal, the main control end by a main control end
Signal is transmitted by wireless signal to control controlled terminal.For example, main control end is an iron rolling door remote controler, and controlled terminal is one
Iron rolling door with wireless signal receiver, user can control the keying of iron rolling door directly to iron rolling door remote controller operation.But
Wireless signal remote control carries out the transmission of wireless signals with a certain specific frequency, when making an uproar under the specific frequency in local environment
When sound is excessive, ambient noise certainly will influence whether the transmission of wireless signals, and controlled terminal is caused to receive the signal of mistake, because
And cause controlled terminal that can not do.Therefore, have frequency hopping in existing wireless signal transmission, when in environment in a certain specific frequency
When noise under rate is excessive, and when frequency that the specific frequency is wireless signal transmission, main control end can carry out frequency hopping, and transformation is wireless
The frequency of signal transmission avoids the influence of ambient noise, achievees the purpose that transmit correct signal.
And the frequency hopping of wireless signal has and is divided into two kinds of two-way frequency hopping and unidirectional frequency hopping.It please refers to shown in Fig. 6, works as use
When two-way frequency hopping, carried out changing sound interval sequence by a main control end, and frequency signal is changed to a controlled terminal by one first channel CH1 transmission one
S40, then the controlled terminal received after this changes frequency signal S50 by first channel CH1, which carries out changing frequency, and passes through
One second channel CH2 returns one first confirmation signal to controlled terminal S51.When the main control end is received by second channel CH2
After the first confirmation signal S41 transmitted to the controlled terminal, it will pass through second channel CH2 and send out one second confirmation signal to the quilt
Control end S42, and after the controlled terminal receives second confirmation signal S52 by second channel CH2, just once again by this second
Channel CH2 returns a third confirmation signal to main control end S53.When the main control end by second channel CH2 receive this
After three confirmation signal S43, that is, changes sound interval sequence and complete S44.
Replacement channel is carried out using two-way frequency hopping, confirms which frequency be switched to by bidirectional transmit-receive communication
Road, then link up confirmation with channel of the controlled terminal after replacement by main control end and change whether sound interval sequence is completed.But main control end and controlled terminal
Receiving and transmitting signal will be carried out change frequency, either main control end or controlled terminal are required for repeatedly transmitting multiple confirmation signal, therefore
The more time can be expended when change sound interval sequence, and constantly send and receive signal also main control end and controlled terminal can be made to consume
Excessive electric energy.
It please refers to shown in Fig. 7, when using unidirectional frequency hopping, the main control end and the controlled terminal are distinctly to carry out changing sound interval
Sequence, and the main control end is preset with fixed plural channel with the controlled terminal.The main control end first sets wherein one from plural channel
Channel be using channel S60, and detect this use channel ambient noise S61, judge this using channel ambient noise whether
Excessive S62, if this can not be transmitted using channel for signal, as signal-to-noise ratio (signal noise ratio) is less than a critical value
When, judge that this is excessive using the ambient noise of channel, and again by setting another channel as using channel in the plural number channel
S63, and repeat the detection this use channel ambient noise S61 the step of.When this using channel ambient noise for
Signal transmits, and when such as interrogating miscellaneous ratio more than the critical value, then judges that this is not excessive using the ambient noise of channel, and transmit control letter
Number S64 is remotely controlled to the controlled terminal.
It please refers to shown in Fig. 8, the controlled terminal in those plural channels then first by setting one of channel as using channel
S70, and detect whether this has the control signal S71 that the main control end transmits using channel, if being not detected in this is using channel
When the control signal of main control end transmission, then again by setting another channel in the plural number channel as using channel S72, and repeatedly
The step of executing the detection control signal S71 for whether thering is the main control end to transmit using channel.When in this using channel in examine
When measuring the control signal of main control end transmission, which operates S73 according to the control signal.
It is executed respectively by main control end and controlled terminal and changes sound interval sequence, to reduce time and the electric power spent by two-way communication.
But when the main control end detects the ambient noise for using channel, need expend the more time removes to detect the letter for using channel
It makes an uproar than whether being more than the critical value, it is however generally that, 100 milliseconds of detection or more is needed, this could be more accurately detected and use channel
Environmental noise level.For requiring the controller of fast reaction, existing unidirectional frequency hopping to be just unable to reach its requirement.
In addition, the sound interval sequence of changing performed by the controlled terminal is repeated continuously in each channel of scanning whether have control signal, when
When the channel of controlled terminal detection control signal is just identical as the main control end transmission control channel of signal, just receives and obtain the control
Signal.For example, when the controlled terminal has fixed first~five channel, this changes sound interval sequence by first channel
Detection, and the second~the 5th channel is sequentially detected, until having control signal in a wherein channel, further according to the control received
Signal processed is done, if until the 5th channel not yet contain the control signal when, then again by the first channel sequentially
Detection.By this in a manner of one when detection controls signal, if main control end transmits control signal with the first channel, but controlled terminal is from the
Two channels start to have detected whether the control signal one by one, which just can not receive the control signal at once, it is necessary to etc.
After waiting for that whole channels all detect, then again detect the second channel of road when, can just receive the control signal, cause controlled terminal
Delay is done.Therefore, existing unidirectional frequency hopping is bound to further to be improved.
Invention content
The shortcomings that detecting the overlong time of ambient noise in view of existing unidirectional frequency hopping, the main object of the present invention is
A kind of transfer approach of the unidirectional frequency hopping of wireless signal is provided, to complete frequency hopping procedures more quickly.
In order to achieve the above objectives, the transfer approach of the unidirectional frequency hopping of wireless signal of the present invention is executed by a main control end, and the biography
Delivery method includes a transfer step, wherein the transfer step include it is following step by step：
A. it is preset with plural channel, and each channel has recorded corresponding environmental noise level respectively；
B. it is using channel less than a channel setting is chosen in the channel of a critical value by environmental noise level；
C. this is detected with a first time and uses the actual environment noise intensity of channel, and judge that this uses the reality of channel
Whether environmental noise level is less than the critical value；
D. when the actual environment signal strength when this using channel is not less than the critical value, another channel is set as using frequency
Road, and repeat c step by step；
E. when the actual environment noise intensity when this using channel is less than the critical value, one control signal of transmission.
The transfer approach of the unidirectional frequency hopping of wireless signal of the present invention by each channel in record have corresponding ambient noise
Intensity, according to the corresponding environmental noise level of each channel, by environmental noise level less than one frequency of selection in the channel of the critical value
Road, which is used as, uses channel.Under identical environment, the Strength Changes amplitude of ambient noise is little, therefore, because using channel pair
The environmental noise level answered has been recorded in main control end, just need not be with detection makes again for a long time when executing transfer step
With the environmental noise level of channel, it is only necessary to whether detect the actual environment noise intensity for using channel again with the first time
Less than the critical value, thereby shorten judge the actual environment noise intensity using channel whether be less than the critical value when
Between.
Description of the drawings
Fig. 1 is the transfer step flow chart of the transfer approach preferred embodiment of the unidirectional frequency hopping of wireless signal of the present invention.
Fig. 2 is the detecting step flow chart of the transfer approach preferred embodiment of the unidirectional frequency hopping of wireless signal of the present invention.
Fig. 3 is the detecting step flow chart of the transfer approach preferred embodiment of the unidirectional frequency hopping of wireless signal of the present invention.
Fig. 4 is the flow chart of the first preferred embodiment of method of reseptance of the unidirectional frequency hopping of wireless signal of the present invention.
Fig. 5 is the flow chart of the second preferred embodiment of method of reseptance of the unidirectional frequency hopping of wireless signal of the present invention.
Fig. 6 is the flow chart of the two-way frequency hopping of prior art wireless signal.
Fig. 7 is that the main control end of the unidirectional frequency hopping of prior art wireless signal changes the flow chart of sound interval sequence.
Fig. 8 is that the controlled terminal of the unidirectional frequency hopping of prior art wireless signal changes the flow chart of sound interval sequence.
Specific implementation mode
Coordinate attached drawing and present pre-ferred embodiments below, the present invention is further explained reaches predetermined purpose and taken
Technological means.
The present invention provides the transfer approach of the unidirectional frequency hopping of a wireless signal, which is executed by a main control end.The biography
Delivery method includes a transfer step.
Refering to Figure 1, the transfer step include it is following step by step：
It is preset with plural channel, and each channel has corresponding environmental noise level S10 respectively；
It is less than in the channel of a critical value by environmental noise level and chooses a channel setting as using channel S11；
The actual environment noise intensity S12 for using channel is detected with a first time；
Judge that this uses whether the actual environment noise intensity of channel is less than critical value S13；
When the actual environment signal strength using channel is not less than the critical value, another channel is set as using channel
S14, and re-execute and detect the actual environment noise intensity S12 for using channel step by step；
When the actual environment noise intensity using channel is less than the critical value, one control signal S15 of transmission.
For example, which is preset with first to the 5th channel CH1~CH5, and the ambient noise of each channel itself
Intensity is N1~N5, and N1<N2<Critical value<N3<N4<N5.When the main control end executes the transfer step, more each channel CH1
The environmental noise level of~CH5.Environmental noise level N1, N2 of the first channel CH1 and second channel CH2 smaller than should
Critical value, therefore in the transfer step, using the first channel CH1 or the second channel CH2 as using channel.This explanation
With the first channel CH1 for example, using the first channel CH1 as this using after channel, (it is, for example, at the first time with this
The actual environment noise intensity n1 of first channel CH1 5ms) is detected, and judges that the actual environment noise of first channel CH1 is strong
Spend whether n1 is less than the critical value, when less than the critical value, i.e., transmitting the control signal with first channel CH1.If this first
When the actual environment noise intensity n1 of channel CH1 is more than the critical value, then it is used as again using the second channel CH2 using channel,
And the actual environment noise intensity n2 of second channel is detected again, and judge that the actual environment noise of second channel CH2 is strong
Spend whether n2 is less than the critical value, when less than the critical value, i.e., transmitting the control signal with second channel CH2.If this second
The actual environment noise intensity n2 of channel CH2 is also greater than the critical value, then again using the third channel CH3 as use channel,
And detection and judgement again, until the actual environment noise intensity of a wherein channel is less than the critical value.
Since environmental noise level can change at any time and at random under realistic situation, even if under identical environment, with when
Between passage, various ambient noises may leave this environment or enter this environment.For example, when the master control of the present invention
When end is an electric rolling door remote controler, wherein a user is when a factory is remotely controlled using the electric rolling door remote controler, the electricity
Rolling door remote controler will execute the transfer step, at this time first to the 5th channel CH1~CH5 itself in the electric rolling door remote controler
Environmental noise level is N1~N5.And when the remote controler that another one user carries a door lock for vehicle enters the environment, and should
The channel frequency of door lock for vehicle remote controler is by chance identical as the channel frequency of the electric rolling door remote controler, in contrast, the vehicle doorn
The wireless signal that lock remote controler is sent out is exactly the ambient noise of the electric rolling door remote controler.Therefore, in this situation, the electric rolling door
The environmental noise level of each channel improves in remote controler, when the electric rolling door remote controler uses frequency using the second channel CH2 as this
When road, the actual environment noise intensity n2 that is detected with the first time can because the influence of the door lock for vehicle remote controler and
Increase, i.e. n2>N2 causes n2 to be more than the critical value, and the transmission of control signal just can not be carried out with second channel CH2.Therefore weight
New settings the first channel CH1 uses channel as this, then detects the actual environment noise intensity of first channel CH1 again
N1, although the actual environment noise intensity n1 of first channel CH1 is more than the environmental noise level of first channel CH1 itself
N1, but still it is less than the critical value, i.e. N1<n1<Critical value, therefore the electric rolling door remote controler just should with first channel CH1 transmission
Signal is controlled, the switch of an electric rolling door is remotely controlled.
It please refers to shown in Fig. 2, the transfer approach of the unidirectional frequency hopping of the wireless signal further includes a detecting step, the inspection
Survey step include it is following step by step：
It is preset with plural channel S20；
The environmental noise level S21 of each channel is detected with one second time；
Wherein this is less than second time at the first time.
It please refers to shown in Fig. 3, wherein the detecting step detects the environmental noise level step of each channel in second time
In S21, further include it is following step by step：
A wherein channel is set to detect channel S211；
The environmental noise level S212 of the detection channel is detected and recorded with second time；
It is confirmed whether that all channels have all recorded corresponding environmental noise level S213；
A channel has not recorded corresponding environmental noise level when having wherein, will not there is the frequency of corresponding environmental noise level
Road is set as detecting channel S214, and the step of re-executing the detection and recording the environmental noise level of the detection channel
S212；
When all channels, which all record, corresponding environmental noise level, terminate detecting step S215.
The transfer approach of the unidirectional frequency hopping of the wireless signal in main control end record by having the corresponding ambient noise of each channel
Intensity executes the transfer step, and in the channel from environmental noise level less than the critical value when the main control end carries out frequency hopping
It chooses one to be set as using channel, using the preferential channel as transmission control signal.Under identical environment, ambient noise
Strength Changes amplitude is little.Therefore, before controlling signal using channel transmission using this, it is only necessary to again with extremely short first time
Confirm whether ambient noise can interfere the transmission of control signal, channel is used without being detected again with interminable second time
Ambient noise, substantially to reduce the time of detection ambient noise.
And the detecting step executes when the main control end does not execute the transfer step, by the detecting step with this second when
Between detect the corresponding environmental noise level of each channel, for being used when next transfer step, each frequency is gone through by the detecting step
The environmental noise level in road simultaneously records it, to obtain the accurate environmental noise level of each channel, is chosen in reduction transfer step
Channel with this at the first time detect when, corresponding to environmental noise level be more than the critical value probability.
For example, which is preset with first to the 5th channel CH1~CH5, sets first channel CH1 first and makees
To detect channel, and the environmental noise level N1 of first channel CH1 is detected with second time 500ms, and by first frequency
The environmental noise level N1 of road CH1 records it.Then again using the second channel CH2 as detection channel, with second time 5ms
The environmental noise level N2 of second channel CH2 is detected and recorded, is so constantly repeated, until the first~the 5th channel CH1
Until environmental noise level N1~N5 of~CH5 is all detected and record finishes.
This is 5 milliseconds at the first time, and second time is 500 milliseconds.The main control end is when executing the detecting step
The ambient noise in each channel is detected with 500 milliseconds of time, more accurately to be measured, and testing result is stored.When
When the main control end executes the transfer step, just with the testing result of the detecting step, selection environment noise intensity is critical less than this
A wherein channel for value, which is used as, uses channel, and detects ambient noise again with 5 milliseconds of time, it is ensured that channel can accurately pass
Send control signal.Therefore, the main control end is when transmission controls signal, it is only necessary to detect ambient noise with 5 milliseconds, be greatly shortened
Detection time achievees the purpose that quickly to control.
In addition, choosing a channel setting in channel in the transfer step by environmental noise level less than a critical value and being
In the step of channel S11, further chooses the channel corresponding to minimum ambient signal strength and set it to using frequency
Road to reduce the probability detected again, and can provide preferably transmission quality, avoid the interference of ambient noise.
And the transfer step sets another channel as using in the step of channel S14, further setting time low environment letter
Channel corresponding to number intensity, and set it to using after channel, re-executing step S12.Thus, work as minimum environment
When being detected with second time, the channel corresponding to the minimum ambient signal strength is detected channel corresponding to signal strength
When the actual environment signal strength arrived is not less than the critical value, just using the channel corresponding to secondary low environment signal strength as next time
Use channel, to reduce the probability that detects again, further raising efficiency.
It please refers to shown in Fig. 4, is executed by a controlled terminal as the method for reseptance of the unidirectional frequency hopping of the wireless signal, the recipient
Method includes following steps：
Store a preferential channel S30；
It is to use channel S31 by the preferential channel setting；
Whether detection has control signal S32 using channel；
If using not there is control signal in channel, another channel is set as using channel S33, and is re-executed detection and used
Whether channel has the step of control signal S32；
If using there is control signal in channel, the use channel for having control signal is stored as preferential channel, and receiving should
Control signal S34.
The controlled terminal is using the preferential channel as the channel of first time detection, to detect whether containing control signal, if having
It then directly does, row is detected whether containing control signal again after replacing another channel without if.It is each by constantly repeating to detect
Whether containing signal is controlled in channel, when detecting control signal, action is directly just executed according to the control signal.And this is excellent
The previous channel for receiving control signal of first channel, therefore when not replacing use environment, the change of ambient noise is little, if preceding
It is secondary to receive control signal, indicate that the ambient noise of the channel is low, therefore main control end is easy to transmit control signal with this channel.
Controlled terminal to improve the probability for receiving the control signal, and is further reduced this also just by preferentially detecting the preferential channel
The delay time that controlled terminal is done, that is, reduce detect each channel whether the number containing the control signal.
It please refers to shown in Fig. 5, furthermore, does not have control signal in executing this using channel, set another channel
It after the step of using channel S33, detects whether this has control signal S331 using channel, and does not have control in this is using channel
When signal processed, step S31 is executed, when having control signal in this is using channel, executes step S34.
Repetition by improving the preferential channel detects number, to further increase the probability for receiving the control signal.It lifts
For example, which has the one first~the 5th channel CH1~CH2, the preferential channel of wherein second channel CH2 storages.
When the controlled terminal executes the method for reseptance, whether have the control signal, if nothing, again if first detecting in second channel CH2
Whether detect in first channel CH1 has the control signal.If when in first channel CH1 again without control signal,
Whether detect again once again in second channel CH2 has the control signal.That is, the controlled terminal detects the sequence of each channel
It is as follows：CH2 → CH1 → CH2 → CH3 → CH2 → CH4 → CH2 → CH5 → CH2 → CH1 ..., it is so continuous to repeat down,
Until detecting the control signal.Thus, which the repetition detection number of the preferential channel (the second channel CH2) will carry
Height, and second channel CH2 is the previous channel for detecting control signal, under identical environment, main control end is with same channel
The probability of emissioning controling signal also can be higher, therefore can further increase the probability for detecting the control signal.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, relevant technical staff in the field, not
It is detached from the range of technical solution of the present invention, when the technology contents using the disclosure above make a little change or are modified to equivalent
The equivalent embodiment of variation, as long as being the content without departing from technical solution of the present invention, according to the technical essence of the invention to above
Any simple modification, equivalent change and modification made by embodiment, in the range of still falling within technical solution of the present invention.
Claims (3)
1. a kind of transfer approach of the unidirectional frequency hopping of wireless signal executes a transfer step and a detecting step by a main control end,
It is characterized in that, it is following step by step that the transfer step is performed realization：
A. it is preset with plural channel, and each channel has recorded corresponding environmental noise level respectively；
B. it is using channel less than a channel setting is chosen in the channel of a critical value by environmental noise level；
C. the actual environment noise intensity using channel is detected with a first time, and judges the reality using channel
Whether environmental noise level is less than the critical value；
D. when the actual environment signal strength using channel is not less than the critical value, another channel is set as using frequency
Road, and repeat c step by step；
E. when the actual environment noise intensity using channel is less than the critical value, one control signal of transmission；
The detecting step is performed to record the corresponding environmental noise level of each channel to be performed for next transfer step
When use, realized when the detecting step executes it is following step by step：
I. it is preset with plural channel；
II. the environmental noise level of each channel is detected with one second time；The wherein described first time is less than second time；
The step II of the detecting step be performed further realize it is following step by step：
A wherein channel is set to detect channel；
The environmental noise level of the detection channel is detected and recorded with second time；
It is confirmed whether that all channels have all recorded corresponding environmental noise level；
A channel has not recorded corresponding environmental noise level when having wherein, will not have the channel of corresponding environmental noise level to set
It is set to detection channel, and repeats point for the environmental noise level that the detection channel is detected and recorded with second time
Step；
When all channels, which all record, corresponding environmental noise level, terminate the execution of the detecting step.
2. the transfer approach of the unidirectional frequency hopping of wireless signal according to any one of claim 1, which is characterized in that in described
Transfer step execute b step by step in, further choosing the channel corresponding to minimum ambient signal strength and setting it to makes
Use channel.
3. the transfer approach of the unidirectional frequency hopping of wireless signal according to claim 2, which is characterized in that in the transfer step
The d of execution step by step in, further set the channel corresponding to secondary low environment signal strength as using channel.
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| CN114585030B (en) * | 2020-12-02 | 2024-03-05 | 致伸科技股份有限公司 | Data transmission method of wireless peripheral device |
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| CN101753225A (en) * | 2008-12-03 | 2010-06-23 | 财团法人工业技术研究院 | RF channel deciding and conversing method and RF wireless transmit-receive system thereof |
| CN102594384A (en) * | 2011-01-04 | 2012-07-18 | 钰宝科技股份有限公司 | Anti-jamming emitting device, anti-jamming receiving device, anti-jamming wireless communication system and method |
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| US7782986B2 (en) * | 2006-03-16 | 2010-08-24 | Harris Corporation | Signal jamming avoidance method for a frequency hopping communication system |
| US8185204B2 (en) * | 2006-07-12 | 2012-05-22 | Cardiac Pacemakers, Inc. | Implantable medical device telemetry with adaptive frequency hopping |
| US8581695B2 (en) * | 2009-05-27 | 2013-11-12 | Grant B. Carlson | Channel-switching remote controlled barrier opening system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101753225A (en) * | 2008-12-03 | 2010-06-23 | 财团法人工业技术研究院 | RF channel deciding and conversing method and RF wireless transmit-receive system thereof |
| CN102594384A (en) * | 2011-01-04 | 2012-07-18 | 钰宝科技股份有限公司 | Anti-jamming emitting device, anti-jamming receiving device, anti-jamming wireless communication system and method |
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