CN1972273A - A transmission method for high-interference environment and its transmission system - Google Patents
A transmission method for high-interference environment and its transmission system Download PDFInfo
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- CN1972273A CN1972273A CN 200510123456 CN200510123456A CN1972273A CN 1972273 A CN1972273 A CN 1972273A CN 200510123456 CN200510123456 CN 200510123456 CN 200510123456 A CN200510123456 A CN 200510123456A CN 1972273 A CN1972273 A CN 1972273A
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Abstract
This invention discloses one transmission method and system for high interference environment, which comprises one detector inside, one analogue digital converter, one digital sealing device, digital filter and one micro controller, wherein, through above transmission system, and when detector tests device status, its converts analogue test signal into digital test signal and sends them out by cutting and sealing; after filtering, outputting the test signal to micro controller for micro processor for judgment for times operation.
Description
Technical field:
The present invention relates to a kind of in high-interference environment, can effectively prevent stop signal by arround the transmission method of noise jamming, relate to a kind of transmission system of transmission signals in high-interference environment that reduces anti-tampering cost and improve the stability of signal transmission simultaneously.
Background technology:
Be subjected to the differentiation influence of computerization control and equipment automatization, numerous integrated mills is arranged at present, as the power plant, brewery, the place of high risk such as oil plant or steel mill, in order to reduce the time that manpower and reduction personnel are in hazardous environment, mostly adopt the mode of controlling by Master Control Center to handle, it mainly is on each device various detectors to be set in factory, be subjected to the temperature of arrangement for detecting for detecting, voltage, every data such as electric current or pressure, and these transfer of data to the microcontroller of long-range Master Control Center come discriminating processing, be that first analogue type conversion of signals with detector becomes the numeric type signal traditionally, and will detect signal via the transmission line of RS-485 and so on and be passed in the microcontroller, so in the process of transmission, be provided with multiple main equipment in the aforementioned place, it can produce various power supply interference noise, because transmission line constantly passes through the equipment of this class, therefore the signal that detects that transmits in transmission line is very easily lost or is changed because of noise jamming, microcontroller is not received or receive wrong signal, and then cause erroneous judgement, so not only can produce misoperation, even because of handling in real time as boiler overheat, the phenomenon of superpressure, the lighter causes the inter-process article to damage, and may take place what is more such as high risk incidents such as blasts;
In order to solve the interference problem that has now in high-noise environment, the main practice is to coat with wire netting outside transmission line, with the reduction interference of noise, but because the plant area in aforementioned place is vast, cost at the complete clad metal net of transmission line is high, and also can cause the inconvenience of backward overhauling transmission line; Moreover also have the dealer equipment of denoising to be set in each interference source, but it is provided with one by one except cost is low, and need find out interference source one by one, moreover it only can locally reduce noise, and can't overcome the problem of noise fully; Install filter additional again or before having people Yu Wei to handle, but its transmission line has suffered noise jamming in the process of transmitting, has carried out signal filtering this moment again, its filtration be to be subjected to interference signals, equally can cause the erroneous judgement of microcontroller.
In other words, in the existing specifically open data that disclose or use, a kind of method for transmitting signals and transmission system that has low-cost and high stability concurrently of teaching never, and cause can't be correct the controlling equipment device.
Summary of the invention:
Technical problem to be solved by this invention is: at the above-mentioned deficiency of prior art, a kind of transmission method and transmission system thereof that is used for high-interference environment is provided, allow the signal transmission can not be subjected to ambient noise interference, can reduce anti-tampering cost and improve the stability of signal transmission.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of transmission method that is used for high-interference environment, this method comprises the steps: in regular turn
A, detect data: utilize and be located at the detector that is subjected in the arrangement for detecting and detect its corresponding data, and export these data to transducer;
B, conversion of signals: transducer converts thereof into the digital signal that can grow Distance Transmission after received signal;
C, signal package: aforementioned digital signal is cut into digital package, digital signal can the package mode be transmitted;
D, signal transmission: with aforementioned digital package signal output;
E, signal filtering: with this digital signal and default package definite value contrast, and the digital package signal that will meet this package definite value is exported to a microprocessor;
F, signal processing: behind the digital package signal that receives this definite value, give interpretation and handle, be subjected to arrangement for detecting to carry out time action for controlling.
The package of described digital signal cutting is that every signal length is 800minsec, 20 constitute and be integrated into this package length.Described predetermined package definite value is a voltage.Described voltage is DC4V.
A kind of transmission system that is used for above-mentioned transmission method, described transmission system includes:
One is subjected to arrangement for detecting;
One detector, this detector is located at and is subjected in the arrangement for detecting, and exportable this detects the analog signal of data;
One analog-digital converter, this analog-digital converter is connected with detector, and supplying analog signal conversion is digital signal;
One digital wrapper, this numeral wrapper can be cut package again with the digital signal after the conversion, and is exported, and this numeral wrapper is located at the inside or a side of analog-digital converter;
One transmission line, this transmission line is in order to the package digital signal of transmission of digital wrapper output;
One digital filter, this digital filter can be preset with a package definite value for connecting transmission line in it, supply behind the package signal that receives aforementioned digital wrapper transmission and then contrast, and will meet the signal output of this package definite value;
One microcontroller, this microcontroller is located at long-range Master Control Center, and above-mentioned digital filter is located at the inner or side of microcontroller, and microcontroller can receive the package digital signal of digital filter output, to differentiate and to handle.
Wherein, described detector can be temperature inductor, pressure inductor, voltage sensor, current inductor, infrared inductor.Described transmission line can be RS-485.Described analog-digital converter is run-in index transducer, continuous approximation transducer, voltage commentaries on classics frequency converter, integrated AD C.
Digital wrapper one side of described analog-digital converter is provided with a digital filter in addition, and digital filter one side of microcontroller is provided with a digital wrapper in addition, supplies the microcontroller feedback signal to detector.Described microcontroller has input and output function, may be output to computer.
Compared with prior art, advantage of the present invention is: can allow the data-signal that detects in the process of transmission, do not lose or change because of ambient noise interference, to guarantee the stability and the correctness of signal transmission, and then effectively control is subjected to arrangement for detecting, noise jamming can be effectively prevented, and the anti-tampering cost of transmission signals can be reduced.
Next enumerate a preferred embodiment; and cooperate graphic and figure number; other purpose of the present invention and usefulness are further described; enabling has more detailed understanding to the present invention, and makes and be familiar with this operator and can implement according to this, and the following stated only is to explain preferred embodiment; but not be to limit the scope of the invention; so all have based on creation spirit of the present invention, and be any type of change of the present invention or modification, all still belongs to the category that the invention is intended to protect.
Description of drawings:
Fig. 1 is the block schematic diagram of transmission system of the present invention, in order to the framework and the corresponding relation of explanation transmission system.
Fig. 2 is the schematic flow sheet of transmission method of the present invention, further specifies the transmission that detects signal.
Label declaration:
10 are subjected to arrangement for detecting 20 detectors
30 analog-digital converters, 35 digital wrapper
36 digital filters, 40 transmission lines
50 microcontrollers, 55 digital filters
56 numerical digit wrapper 61 detect data
62 conversion of signals, 63 signal packages
64 signals transmit 65 signal filterings
66 signal processing
Embodiment:
Please referring to shown in Figure 1, this transmission system includes one and is subjected to arrangement for detecting 10, a detector 20, an analog-digital converter 30, one digital wrapper 35, a transmission line 40, a digital filter 55 and a microcontroller 50; Wherein:
One is subjected to arrangement for detecting 10, and this is subjected to arrangement for detecting 10 is the equipment of being located in the high-noise environment;
One detector 20, this detector 20 is located at and is subjected in the arrangement for detecting 10, it can be temperature inductor, pressure inductor, voltage sensor, current inductor, infrared inductor etc., for detecting data such as the temperature that is subjected to arrangement for detecting, pressure, voltage, electric current, and export the analog signal that this detects data;
One analog-digital converter 30, this analog-digital converter 30 is located at the periphery that is subjected to arrangement for detecting 10, and be connected with detector 20, for the analog signal conversion with detector 20 outputs is digital signal, and it can be run-in index transducer, continuous approximation transducer, voltage commentaries on classics frequency converter, integral form transducer;
One digital wrapper 35, this numeral wrapper 35 can be located within the analog-digital converter 30, also can be located at a side of analog-digital converter 30, be to be located in the analog-digital converter 30 in the present embodiment, to avoid noise jamming, digital again wrapper 35 can be cut package again with the digital signal after the aforementioned conversion, the signal length of its cutting package is 800minsec, and with per 20 integrated package lengths, and exported, moreover it is provided with a digital filter 36 in addition, for receiving the command signal of being come by the transmission of microcontroller 50 ends;
One transmission line 40, this transmission line 40 is in order to the digital wrapper 35 of connection analog digital transposition transducer 30 and the digital filter 55 of microcontroller 50, for transferring this digital signal through the cutting package;
One microcontroller 50, this microcontroller 50 is located at long-range Master Control Center, and microcontroller 50 is after obtaining the digital signal that detector 20 detects data, differentiates and handles, be subjected to arrangement for detecting 10 to carry out time action for controlling, again or the feedback processing signals give detector 20; One digital filter 55, this digital filter 55 can be located at microcontroller 50 inner or sides, be to be located at microcontroller 50 inside in the present embodiment, to avoid noise jamming, digital filter 55 can be for the digital wrapper 35 that connects analog-digital converter 30, be preset with a package definite value in this digital filter 55, supply behind the package signal that receives aforementioned digital wrapper 35 transmission and then contrast, and the signal that will meet this package definite value exports microcontroller 50 to, moreover it is provided with a numerical digit wrapper 56 in addition, for the cutting package by the command signal of microcontroller 50 outputs digital filter 36 to analog-digital converter 30;
By aforesaid system configuration, allow transmission system when transmission signals, can after package is handled, transmit earlier, to avoid the noise jamming in the transmission course, and need not to utilize miscellaneous equipment to improve the phenomenon of noise jamming, and then group constitute a high stability and transmission system cheaply.
As for the transmission method of actual operation of the present invention, then please cooperate and consult shown in Figure 2ly, its transmission method step includes one and detects data 61, a conversion of signals 62, a signal package 63, signal transmission 64, one signal filtering 65 and a signal processing 66: wherein;
A, detect data 61: utilize and be located at the detectors 20 that are subjected in the arrangement for detecting 10 and detect its corresponding data,, and export the analog signal of these data to analog-digital converter 30 as temperature, pressure, voltage or electric current etc.;
B, conversion of signals 62: analog-digital converter 30 converts thereof into the digital signal that can grow Distance Transmission after receiving this analog signal;
C, signal package 63: aforementioned digital signal is cut into digital package, and each signal length is 800minsec, and with per 20 integrated these package lengths, digital signal can the package mode be transmitted;
D, signal transmission 64: utilization can be grown the RS-485 transmission line 40 of Distance Transmission with aforementioned digital package signal, is transferred to digital filter 55 receptions of microcontroller 50 by the digital wrapper 35 of analog-digital converter 30;
E, signal filtering 65: the digital filter 55 of microcontroller 50 is after obtaining this numeral package signal, and with the contrast of the package definite value of internal preset, and the digital package signal that will meet this package definite value is exported to microprocessor 50;
F, signal processing 66: microcontroller 50 gives interpretation and handles behind the digital package signal that receives this definite value, is subjected to arrangement for detecting 10 to carry out time action for controlling.
By this, can allow the detector 20 will be under the situation that is not subjected to noise jamming by the data-signal that detected by arrangement for detecting 10, transfer to microcontroller 10, need for inferior action, and microprocessor 50 also can see through the design of its tool numeral wrapper 56 and analog-digital converter 30 tool digital filters 36, and feedback signal is given detector 20, as the usefulness of linking up communication, effectively prevent noise jamming, and can significantly reduce jamming-proof cost.
Conclude above-mentioned explanation, the present invention can solve the transmission interference problem in high-noise environment in the past, when knowing that the present invention has usability and the progressive on the industry, and in like product, there is no similar products like or deliver and have novelty, so met the application important document of patent of invention, file an application in accordance with the law, and request and grant accurate patent of the present invention early, to feeling moral just.
Claims (17)
1, a kind of transmission method that is used for high-interference environment, it is characterized in that: described transmission method comprises the steps: in regular turn
A, detect data: utilize and be located at the detector that is subjected in the arrangement for detecting and detect its corresponding data, and export these data to transducer;
B, conversion of signals: transducer converts thereof into the digital signal that can grow Distance Transmission after received signal;
C, signal package: aforementioned digital signal is cut into digital package, digital signal can the package mode be transmitted;
D, signal transmission: with aforementioned digital package signal output;
E, signal filtering: with this digital signal and default package definite value contrast, and the digital package signal that will meet this package definite value is exported to a microprocessor;
F, signal processing: behind the digital package signal that receives this definite value, give interpretation and handle, be subjected to arrangement for detecting to carry out time action for controlling.
2, a kind of transmission method that is used for high-interference environment according to claim 1 is characterized in that: the package of described digital signal cutting is that every signal length is 800minsec, 20 constitute and be integrated into this package length.
3, a kind of transmission method that is used for high-interference environment according to claim 1 is characterized in that: described predetermined package definite value is a voltage.
4, a kind of transmission method that is used for high-interference environment according to claim 3, it is characterized in that: described voltage is DC4V.
5, a kind of transmission system that is used for transmission method as claimed in claim 1, it is characterized in that: described transmission system includes:
One is subjected to arrangement for detecting;
One detector, this detector is located at and is subjected in the arrangement for detecting, and exportable this detects the analog signal of data;
One analog-digital converter, this analog-digital converter is connected with detector, and supplying analog signal conversion is digital signal;
One digital wrapper, this numeral wrapper can be cut package again with the digital signal after the conversion, and is exported, and this numeral wrapper is located at the inside or a side of analog-digital converter;
One transmission line, this transmission line is in order to the package digital signal of transmission of digital wrapper output;
One digital filter, this digital filter can be preset with a package definite value for connecting transmission line in it, supply behind the package signal that receives aforementioned digital wrapper transmission and then contrast, and will meet the signal output of this package definite value;
One microcontroller, this microcontroller is located at long-range Master Control Center, and above-mentioned digital filter is located at the inner or side of microcontroller, and microcontroller can receive the package digital signal of digital filter output, to differentiate and to handle.
6, transmission system according to claim 5 is characterized in that: described detector can be temperature inductor.
7, transmission system according to claim 5 is characterized in that: described detector can be pressure inductor.
8, transmission system according to claim 5 is characterized in that: described detector can be voltage sensor.
9, transmission system according to claim 5 is characterized in that: described detector can be current inductor.
10, transmission system according to claim 5 is characterized in that: described detector can be infrared inductor.
11, transmission system according to claim 5 is characterized in that: described transmission line can be RS-485.
12, transmission system according to claim 5 is characterized in that: described analog-digital converter is the run-in index transducer.
13, transmission system according to claim 5 is characterized in that: described analog-digital converter is the continuous approximation transducer.
14, transmission system according to claim 5 is characterized in that: described analog-digital converter is that voltage changes frequency converter.
15, transmission system according to claim 5 is characterized in that: described analog-digital converter is integrated AD C.
16, transmission system according to claim 5, it is characterized in that: digital wrapper one side of described analog-digital converter is provided with a digital filter in addition, and digital filter one side of microcontroller is provided with a digital wrapper in addition, supplies the microcontroller feedback signal to detector.
17, transmission system according to claim 5 is characterized in that: described microcontroller has input and output function, may be output to computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510123456 CN1972273A (en) | 2005-11-21 | 2005-11-21 | A transmission method for high-interference environment and its transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510123456 CN1972273A (en) | 2005-11-21 | 2005-11-21 | A transmission method for high-interference environment and its transmission system |
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| CN1972273A true CN1972273A (en) | 2007-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510123456 Pending CN1972273A (en) | 2005-11-21 | 2005-11-21 | A transmission method for high-interference environment and its transmission system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102868863A (en) * | 2011-07-06 | 2013-01-09 | 广明光电股份有限公司 | Analog video signal transmitting device |
| CN102054345B (en) * | 2009-11-10 | 2013-06-19 | 汉达科技股份有限公司 | Single transceiving device and bidirectional signal transmission system |
| CN102054347B (en) * | 2009-11-10 | 2014-01-01 | 汉达科技股份有限公司 | Signal transmitting, receiving and controlling device and system |
-
2005
- 2005-11-21 CN CN 200510123456 patent/CN1972273A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102054345B (en) * | 2009-11-10 | 2013-06-19 | 汉达科技股份有限公司 | Single transceiving device and bidirectional signal transmission system |
| CN102054347B (en) * | 2009-11-10 | 2014-01-01 | 汉达科技股份有限公司 | Signal transmitting, receiving and controlling device and system |
| CN102868863A (en) * | 2011-07-06 | 2013-01-09 | 广明光电股份有限公司 | Analog video signal transmitting device |
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Open date: 20070530 |