CN105139591A - Remote alarming method and system based on detection of signal-to-noise ratio - Google Patents
Remote alarming method and system based on detection of signal-to-noise ratio Download PDFInfo
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- CN105139591A CN105139591A CN201510606089.0A CN201510606089A CN105139591A CN 105139591 A CN105139591 A CN 105139591A CN 201510606089 A CN201510606089 A CN 201510606089A CN 105139591 A CN105139591 A CN 105139591A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
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Abstract
The invention discloses a remote alarming method and system based on detection of signal-to-noise ratio. The method includes the following steps: a receiver detects the intensity of a control signal sent by a transmitter and the intensity of ambient noise; the receiver calculates the ratio between the intensity of the control signal and the intensity of the noise signal, i.e., the signal-to-noise ratio, and the receiver sends the signal-to-noise ratio to the transmitter; the transmitter determines the size of the signal-to-noise ratio and a predetermined threshold value, and when the signal-to-noise ratio is smaller than the predetermined threshold value, an alarming signal is sent. According to the invention, multiple factors which impact remote operations are fully taken into consideration, such as the noise factor and the factors of the remote model, so that detection for a remote operation environment is more accurate and smart. When unsafe environment is detected, an alarm can be sent in time to alert an operator and reduce operation risks. The receiver can perform real-time detection, real-time transmission, and guarantee the timeliness and accuracy of data.
Description
Technical field
The present invention relates to telecontrolled model field, refer more particularly to a kind of tele-alarm method and system detected based on signal to noise ratio (S/N ratio).
Background technology
Telecontrolled model is in remote control distributor process, network environmental factors impact is very large, the data communication of noise meeting jamming transmitter and receiver in network environment, if noise is excessive, not only can reduce communication quality, affect control signal and send, serious meeting reduces control sensitivity, cause the suitable bad of model, particularly under some electromagnetic interference (EMI) rugged environments, near as on-the-spot in urban network close quarters, earthquake relief, mountain area or hi-line etc.
Although can judge remote control environment whether safety by noise monitoring mode, but judge that the security of remote control environment is too single according to noise, precision is not high.Remote control environment not only also has relation with remote control channel, transmitter power etc. factor with network environment is relevant, therefore simple noise monitoring can only know the noise situations in network environment, cannot combined with remote-control control actual conditions, as remote control channel, transmitter power etc., these factors also can affect the security of remote control environment together with noise.
Therefore, prior art needs further to be improved.
Summary of the invention
Problem to be solved by this invention is, a kind of tele-alarm method and system detected based on signal to noise ratio (S/N ratio) is provided, combining environmental noise and remote signal detect, and take into full account the many factors affecting remote control Environmental security, to improve intellectuality and the security of straighforward operation.
For solveing the technical problem, the present invention adopts following technical scheme:
Based on the tele-alarm method that signal to noise ratio (S/N ratio) detects, comprise step: the control signal intensity that receiver detection transmitter is launched and ambient noise intensity; Receiver calculates the ratio of described control signal intensity and noise intensity, i.e. signal to noise ratio (S/N ratio), and described signal to noise ratio (S/N ratio) is sent to transmitter; Transmitter judges described signal to noise ratio (S/N ratio) and reservation threshold size, sends alerting signal when described signal to noise ratio (S/N ratio) is less than reservation threshold.
Further, described control signal intensity, noise intensity are sent to transmitter by described receiver simultaneously, described transmitter draws the communication quality of transmitter and receiver according to described control signal intensity, noise intensity and snr computation, and in screen, show described control signal intensity, noise intensity, signal to noise ratio (S/N ratio) and communication quality.
Further, described alerting signal is at least one in voice, buzzing, vibrations or flashing light.
Further, described transmitter shows described signal to noise ratio (S/N ratio) by the form of show bar, and in show bar, show described communication quality.
Based on the remote control alarming system that signal to noise ratio (S/N ratio) detects, comprise Receiver And Transmitter, described receiver comprises detection module, computing module and communication module, and described detection module is for the control signal intensity that detects transmitter and launch and ambient noise intensity; Described computing module is for the control signal intensity that calculates detection module and detect and noise intensity ratio, i.e. signal to noise ratio (S/N ratio); Described communication module is used for described signal to noise ratio (S/N ratio) to send to transmitter; Described transmitter comprises judge module and alarm module; Described judge module for judging described signal to noise ratio (S/N ratio) and reservation threshold size, and sends alarm command when described signal to noise ratio (S/N ratio) is less than reservation threshold to alarm module; Described alarm module is used for sending alerting signal when receiving described alarm command.
Further, described control signal intensity, noise intensity are sent to transmitter by the communication module of described receiver simultaneously, described transmitter comprises computing module and display module, and described computing module is used for the communication quality drawing transmitter and receiver according to described control signal intensity, noise intensity and snr computation; Described display module is used in screen, show described control signal intensity, noise intensity, signal to noise ratio (S/N ratio) and communication quality.
Further, the display module of described transmitter shows described communication quality by the form of show bar.
Compared with prior art, the tele-alarm method and system tool detected based on signal to noise ratio (S/N ratio) of the present invention has the following advantages:
1) many factors affecting straighforward operation is taken into full account, not only has noise factor to also have telecontrolled model oneself factor, make the detection of straighforward operation environment more accurate, intelligent;
2) when detecting that environment is dangerous, sending warning in time, reminding operator, reduce operational risk; And receiver detects in real time, sends in real time, ensure that the ageing of data and accuracy.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the tele-alarm method based on signal to noise ratio (S/N ratio) detection provided by the invention.
Fig. 2 is the structured flowchart of the remote control alarming system based on signal to noise ratio (S/N ratio) detection provided by the invention.
Embodiment
In order to make technical matters to be solved by this invention, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The tele-alarm method detected based on signal to noise ratio (S/N ratio) provided by the invention, as shown in Figure 1, comprises the following steps:
The control signal intensity that step S100, receiver detection transmitter is launched and ambient noise intensity; Wherein, receiver detect time be real-time, to ensure the ageing of data, receiver first first detects ambient noise intensity, and then detect transmitter transmitting control signal intensity, then using two data as one group, for next step computing.And due to data be send in real time, and the transmission of control signal also can complete in a few microsecond, therefore, to noise intensity detection and control signal strength detection and without the need to necessarily limiting precedence, but need ensure that the time interval of two data is short as far as possible.
Step S200, receiver calculate the ratio of described control signal intensity and noise intensity, i.e. signal to noise ratio (S/N ratio), and described signal to noise ratio (S/N ratio) is sent to transmitter; Receiver often detects one group of control signal intensity and noise intensity, namely the ratio both directly calculating, i.e. signal to noise ratio (S/N ratio), then sends to transmitter, because this smnr data bag is less and now remote control environment is relatively good, therefore the transmission of smnr data bag does not have impact.
Step S300, transmitter judge described signal to noise ratio (S/N ratio) and reservation threshold size, send alerting signal when described signal to noise ratio (S/N ratio) is less than reservation threshold.Described reservation threshold is recorded by test of many times, when signal to noise ratio (S/N ratio) reaches this reservation threshold, shows that the network environment residing for receiver is dangerous, there is larger noise, be unfavorable for straighforward operation.Now send alerting signal, prompting operator takes counter-measure in time.This reservation threshold can be arranged by system, heightens the sensitivity improving alert levels or warning; Turn down to reduce alert levels, but when need ensure to report to the police, straighforward operation is still safe.System according to actual measurement, can set a threshold range, to limit the threshold values authority of setting.And signal to noise ratio (S/N ratio) can embody the quality of control signal intensity, signal to noise ratio (S/N ratio) is large, and illustrate that the quality of control signal intensity is relatively high, signal to noise ratio (S/N ratio) is little, the quality of control signal intensity is described relatively, high-quality control signal intensity is more conducive to the data communication of transmitter and receiver.
Further, receiver is to transmit control signal intensity and noise intensity to during transmission signal to noise ratio (S/N ratio) simultaneously; Transmitter, after receiving above-mentioned data, can process these data, is drawn the communication quality of transmitter and receiver, then show in screen by control signal intensity, noise intensity and the snr computation of the two.Displaying contents comprises control signal intensity, noise intensity, signal to noise ratio (S/N ratio) and communication quality etc.Make alarm detection more directly perceived like this, handled easily person makes according to actual conditions when reporting to the police and judges accurately and tackle.And in order to strengthen display effect, transmitter shows described communication quality by the form of show bar, data are shown more directly perceived.
Because control signal intensity and noise intensity can be sent to transmitter by receiver in the lump, therefore, the calculating of signal to noise ratio (S/N ratio) also can have been calculated by transmitter, but relatively calculate on the receiver, this kind of mode can make data processing delayed a little, so the present invention preferably calculates signal to noise ratio (S/N ratio) on the receiver.
Preferably, described alerting signal is at least one in voice, buzzing, vibrations or flashing light, and user can carry out selection according to actual conditions and arrange.
Based on above-mentioned tele-alarm method, present invention also offers a kind of remote control alarming system detected based on signal to noise ratio (S/N ratio), as shown in Figure 2, comprise receiver 10 and transmitter 20 two parts system, particularly, receiver 10 is disposed with detection module 11, computing module 12 and communication module 13, and detection module 11 is for the control signal intensity that detects transmitter 20 and launch and ambient noise intensity; Computing module 12 is for the control signal intensity that calculates detection module 11 and detect and noise intensity ratio, i.e. signal to noise ratio (S/N ratio); Communication module 13 is for sending to transmitter 20 by described signal to noise ratio (S/N ratio); Control signal intensity and noise intensity can be sent to transmitter 20 when sending signal to noise ratio (S/N ratio) by communication module 13 simultaneously.
Transmitter 20 is provided with judge module 21, alarm module 22, computing module 23 and display module 24; Judge module 21 for judging described signal to noise ratio (S/N ratio) and reservation threshold size, and sends alarm command when described signal to noise ratio (S/N ratio) is less than reservation threshold to alarm module 22; Alarm module 22 is for sending alerting signal when receiving described alarm command.Computing module 23 is for drawing the communication quality of transmitter and receiver according to control signal intensity, noise intensity, snr computation; Display module 24, for showing above-mentioned control signal intensity, noise intensity, signal to noise ratio (S/N ratio) and communication quality in screen, shows this communication quality by the form of show bar simultaneously.Because this system is corresponding with said method, this is no longer going to repeat them for concrete operation method.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (7)
1., based on the tele-alarm method that signal to noise ratio (S/N ratio) detects, it is characterized in that, comprise the following steps:
The control signal intensity that receiver detection transmitter is launched and ambient noise intensity;
Receiver calculates the ratio of described control signal intensity and noise intensity, i.e. signal to noise ratio (S/N ratio), and described signal to noise ratio (S/N ratio) is sent to transmitter;
Transmitter judges described signal to noise ratio (S/N ratio) and reservation threshold size, sends alerting signal when described signal to noise ratio (S/N ratio) is less than reservation threshold.
2. the tele-alarm method detected based on signal to noise ratio (S/N ratio) according to claim 1, it is characterized in that, described control signal intensity, noise intensity are sent to transmitter by described receiver simultaneously, described transmitter draws the communication quality of transmitter and receiver according to described control signal intensity, noise intensity and snr computation, and in screen, show described control signal intensity, noise intensity, signal to noise ratio (S/N ratio) and communication quality.
3. the tele-alarm method detected based on signal to noise ratio (S/N ratio) according to claim 1, it is characterized in that, described alerting signal is at least one in voice, buzzing, vibrations or flashing light.
4. the tele-alarm method detected based on signal to noise ratio (S/N ratio) according to claim 2, it is characterized in that, described transmitter shows described communication quality by the form of show bar.
5., based on the remote control alarming system that signal to noise ratio (S/N ratio) detects, comprise Receiver And Transmitter, it is characterized in that, described receiver comprises detection module, computing module and communication module,
Described detection module is for the control signal intensity that detects transmitter and launch and ambient noise intensity;
Described computing module is for the control signal intensity that calculates detection module and detect and noise intensity ratio, i.e. signal to noise ratio (S/N ratio);
Described communication module is used for described signal to noise ratio (S/N ratio) to send to transmitter;
Described transmitter comprises judge module and alarm module;
Described judge module for judging described signal to noise ratio (S/N ratio) and reservation threshold size, and sends alarm command when described signal to noise ratio (S/N ratio) is less than reservation threshold to alarm module;
Described alarm module is used for sending alerting signal when receiving described alarm command.
6. the remote control alarming system detected based on signal to noise ratio (S/N ratio) according to claim 5, it is characterized in that, described control signal intensity, noise intensity are sent to transmitter by the communication module of described receiver simultaneously;
Described transmitter comprises computing module and display module, and described computing module is used for the communication quality drawing transmitter and receiver according to described control signal intensity, noise intensity and snr computation; Described display module is used in screen, show described control signal intensity, noise intensity, signal to noise ratio (S/N ratio) and communication quality.
7. the remote control alarming system detected based on signal to noise ratio (S/N ratio) according to claim 6, it is characterized in that, the display module of described transmitter shows described communication quality by the form of show bar.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106768205A (en) * | 2016-12-30 | 2017-05-31 | 天津市迅尔仪表科技有限公司 | A kind of ultrasonic flowmeter signal to noise ratio detects alarm module |
| CN106911402A (en) * | 2017-02-28 | 2017-06-30 | 腾讯科技（深圳）有限公司 | A kind of signal detecting method and relevant apparatus |
| CN109544894A (en) * | 2017-01-23 | 2019-03-29 | 深圳市大疆创新科技有限公司 | Control method, unmanned plane and remote control equipment |
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Address after: 518000, Huafeng building, No. 6006 Shennan Road, Guangdong, Shenzhen, Futian District 16F Applicant after: Shenzhen Fusi Technology Co. Ltd. Address before: 518000, Huafeng building, No. 6006 Shennan Road, Guangdong, Shenzhen, Futian District 16F Applicant before: FLYSKY RC Model Technology Co., Ltd. |
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Application publication date: 20151209 |
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