CN108765916A - A kind of sensor that signal carrier encrypted state is controllable - Google Patents
A kind of sensor that signal carrier encrypted state is controllable Download PDFInfo
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- CN108765916A CN108765916A CN201810306065.7A CN201810306065A CN108765916A CN 108765916 A CN108765916 A CN 108765916A CN 201810306065 A CN201810306065 A CN 201810306065A CN 108765916 A CN108765916 A CN 108765916A
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- controllable
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- 238000012545 processing Methods 0.000 claims abstract description 21
- 238000004891 communication Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000012795 verification Methods 0.000 claims description 4
- 238000007405 data analysis Methods 0.000 abstract description 3
- 230000008054 signal transmission Effects 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C25/00—Arrangements for preventing or correcting errors; Monitoring arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/26—Special purpose or proprietary protocols or architectures
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computing Systems (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a kind of sensor that signal carrier encrypted state is controllable, including MIC, the MIC is connected with filter, and the filter connection audible signal modulates Acquisition Circuit, and the acoustical signal modulation Acquisition Circuit is modulated acoustical signal, converts, acquires.Acoustical signal modulation Acquisition Circuit is connect with control circuit, and the processor in control circuit carries out data processing to the acoustical signal of acquisition, and carries out data analysis, then verifies data results, encrypts, and the result is fed back to host computer.Sensor of the invention realizes that signal transmission encryption, condition intelligent are controllable by addition processing device；Using international HART protocol, it is ensured that the compatibility of sensor and power plant's other systems；The signal transmission that sensor signal is output to switch board uses carrier system, demonstrate,proves signal accuracy, reliability, anti-electromagnetic disturbance and the confidentiality test of sensor；Working sensor state is controllable, can further extend its service life.
Description
Technical field
The present invention relates to sensor technical field more particularly to a kind of sensors that signal carrier encrypted state is controllable.
Background technology
It is a kind of effectively common means, real-time online that noise when measuring the burning of boiler internal furnace, which uses sonic sensor,
The leaks sound for monitoring boiler blasting, can accurately and timely capture leaks sound.Sensor received signal is provided, into line frequency
Spectrum analysis exports 0--6mA signals and carries out further software analysis to computer control system, if leaks.So sensing
Signal accuracy, reliability, anti-electromagnetic disturbance, the confidentiality of device are even more important.
At present, in the market for measuring in stove after noise sound wave sensor all uses simple signal acquisition, by sound-
Backstage-computer control system of system is directly sent to after electricity conversion.And there is the factory of many production same type of sensor in the market
Family, causing to cause there are mismatch case equipment to run among producer, the sensor of different model and different backstages in this way can not
Reliable and stable operation.Since this product is strictly required without national standard, so what is used is all each company standard.
General 0-6mA signals easily by electromagnetic interference, cause transmission distorted signals, system not to judge definitely.So：
A kind of sensor that signal carrier encrypted state is controllable generation is very necessary to the stabilization of whole system, reliability service.
Invention content
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, the present invention
One purpose is to propose a kind of sensor that signal carrier encrypted state is controllable, and encryption can be transmitted to signal, compatibility
Good, reliability, accuracy are high.
The technical scheme is that：
A kind of sensor that signal carrier encrypted state is controllable, including：
MIC, the MIC are connected with filter, and the filter is connected with acoustic signal processor, the acoustic signal processor
Acoustical signal is encoded, school is examined and encryption；
Processor, the processor are connect with acoustic signal processor, complete the verification, conversion and processing of signal, and will letter
Breath feeds back to host computer；
The processing communications protocol of the signal of above-mentioned processor use three layer model structure, i.e., physical layer, data link layer and
Application layer.
Preferably, software filtering is carried out using FFT after the filter.
Preferably, the current signal of 200--5000hz is retained after the filtering of the filter.
Preferably, the transmission medium of physical layer is multiple twin coaxial cable in the signal processing communications protocol.
Preferably, the circuit total impedance of the multiple twin coaxial cable is 230-1100 Ω.
Preferably, it is communicated using HART protocol in physical layer in the signal processing communications protocol.
Preferably, data link layer is led to using automatic repeat request transmission mechanism in the signal processing communications protocol
News.
Preferably, application layer is command set in the signal processing communications protocol, and the command set includes generic command, general
Logical order and specific command.
Beneficial effects of the present invention：By addition processing device, realize that signal transmission encryption, condition intelligent are controllable；Using state
The general HART protocol in border, it is ensured that the compatibility of sensor and power plant's other systems；Sensor signal is output to the letter of switch board
Number transmission uses carrier system, demonstrate,proves the signal accuracy of sensor, reliability, anti-electromagnetic disturbance and confidentiality test；It passes
Sense device working state is controllable, can further extend its service life.
Description of the drawings
Attached drawing is used to provide further understanding of the present invention, and a part for constitution instruction, the reality with the present invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings：
Fig. 1 is that a kind of sensor integrated circuit that signal carrier encrypted state is controllable proposed by the present invention connects block diagram；
Fig. 2 is the concrete operating principle circle of the present invention；
Fig. 3 is that the decoded operation principle block diagram of end data is controlled in the present invention；
Fig. 4 is processor software process flow block diagram in the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Examples of the embodiments are shown in the accompanying drawings, and in which the same or similar labels are throughly indicated identical or classes
As element or element with the same or similar functions.The embodiments described below with reference to the accompanying drawings are exemplary, purport
For explaining the present invention, and it is not considered as limiting the invention.
Referring to Fig.1-3, a kind of sensor that signal carrier encrypted state is controllable, including：
Sensor is made of power circuit, control circuit, MIC signal processing circuits, the effect of wherein power circuit be to
Control circuit, acoustical signal modulation Acquisition Circuit provide the various supply voltages needed for it, at the same be responsible for providing sensor with it is upper
HART communication interface, the power supply interface (see Fig. 1) of machine, control circuit is responsible for receiving host computer order, then according to order to sound
Signal modulation Acquisition Circuit is controlled, and is modulated the demodulation and verification of signal, conversion and processing to voice signal, and will
The real-time status of system is sent to host computer.Control circuit passes through connector with power circuit, acoustical signal modulation Acquisition Circuit
It is attached, the signal for modulating Acquisition Circuit with acoustical signal is connect and self-test control interface, and its external interface is turned
It is connected on power circuit.The acoustical signal provided by power circuit is modulated into the supply voltage needed for Acquisition Circuit by patching simultaneously
Part is transferred.
MIC, the MIC are connected with filter, and the current signal of 200--5000hz, the filter are retained after filter filtering
Wave device connects audible signal and modulates Acquisition Circuit, and the acoustical signal modulation Acquisition Circuit is modulated acoustical signal, handles, is convenient for
Rear end acquisition process, filtering are mainly used for the height for carrying out processing to background noise original in burner hearth and sensor itself occurs
The pretreatment of frequency interference signal；The control command to self-checking circuit of control circuit is received simultaneously.
Acoustical signal modulation Acquisition Circuit is modulated voice signal, handles, and is adopted to acoustical signal convenient for control circuit
Collection, data processing, data analysis etc..
Processor, installation are the cores of control circuit on the control circuitry, and the control circuit is acquired with acoustical signal modulation
Circuit connects, and completes data processing, data analysis, result verification, the encryption of signal, and data result is fed back to host computer,
Sensor is with host computer using semiduplex mode, encryption；
The processing communications protocol of the signal of processor uses three layer model structure, i.e. physical layer, data link layer and application
Layer, the wherein transmission medium of physical layer are multiple twin coaxial cable, and the control of circuit total impedance is assisted in 230-1100 Ω, and using HART
View is communicated, i.e. the transmission baud rate of digital signal is set as 1200bps, and 1200Hz represents logical zero, and 2200Hz representatives are patrolled
It collects " 1 ", signal amplitude 0.5A.
Data link layer sends mechanism using automatic repeat request and is communicated in the signal processing communications protocol.
Application layer is command set in the signal processing communications protocol, and the command set includes generic command, normal commands
And specific command.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of sensor that signal carrier encrypted state is controllable, which is characterized in that including：Power circuit, control circuit harmony
Signal modulation Acquisition Circuit；
The power circuit is electrically connected with control circuit harmony signal modulation Acquisition Circuit, is modulated to control circuit, acoustical signal
Acquisition Circuit provides the supply voltage needed for it, and power circuit is equipped with HART communication interface and externally fed interface；
The control circuit and upper mechatronics receive host computer order, and processor are equipped in control circuit and from prosecution
Interface processed, the processor are connect with acoustic signal processor, complete the verification, conversion and processing of signal, and are fed back information to
Host computer；
The acoustical signal modulation Acquisition Circuit includes MIC and self-checking circuit, and the MIC is connected with filter, and the filter connects
It is connected to acoustical signal modulation Acquisition Circuit, the acoustical signal modulation Acquisition Circuit is modulated acoustical signal, converts；
The processing communications protocol of the signal of above-mentioned processor uses three layer model structure, i.e. physical layer, data link layer and application
Layer.
2. a kind of sensor that signal carrier encrypted state is controllable according to claim 1, which is characterized in that the filtering
Software filtering is carried out using FFT after device.
3. a kind of sensor that signal carrier encrypted state is controllable according to claim 1, which is characterized in that the filtering
Retain the current signal of 200--5000hz after the filtering of device.
4. a kind of sensor that signal carrier encrypted state is controllable according to claim 1, which is characterized in that the signal
The transmission medium for handling physical layer in communications protocol is multiple twin coaxial cable.
5. a kind of sensor that signal carrier encrypted state is controllable according to claim 4, which is characterized in that the multiple twin
The circuit total impedance of coaxial cable is 230-1100 Ω.
6. a kind of sensor that signal carrier encrypted state is controllable according to claim 1, which is characterized in that the signal
It is communicated using HART protocol in physical layer in processing communications protocol.
7. a kind of sensor that signal carrier encrypted state is controllable according to claim 1, which is characterized in that the signal
Data link layer sends mechanism using automatic repeat request and is communicated in processing communications protocol.
8. a kind of sensor that signal carrier encrypted state is controllable according to claim 1, which is characterized in that the signal
It is command set to handle application layer in communications protocol, and the command set includes generic command, normal commands and specific command.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810306065.7A CN108765916A (en) | 2018-04-08 | 2018-04-08 | A kind of sensor that signal carrier encrypted state is controllable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810306065.7A CN108765916A (en) | 2018-04-08 | 2018-04-08 | A kind of sensor that signal carrier encrypted state is controllable |
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| CN108765916A true CN108765916A (en) | 2018-11-06 |
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| CN201810306065.7A Pending CN108765916A (en) | 2018-04-08 | 2018-04-08 | A kind of sensor that signal carrier encrypted state is controllable |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101281052A (en) * | 2007-04-02 | 2008-10-08 | 周建明 | High precision low-power consumption radar liquid level instrument system |
| CN102405496A (en) * | 2009-02-20 | 2012-04-04 | Cis电子工业有限公司 | Sensor module and sensor module manufacturing method |
| CN102564530A (en) * | 2011-12-12 | 2012-07-11 | 西安福安创意咨询有限责任公司 | Intelligent two-wire photoelectric level transmitter with current ranging from 4mA to 20mA |
| CN202720025U (en) * | 2012-06-15 | 2013-02-06 | 上海自动化仪表股份有限公司 | Electric buoy level gauge based on highway addressable remote transducer (HART) communication |
| CN205482995U (en) * | 2016-01-20 | 2016-08-17 | 吴同旺 | Intelligence acoustic wave sensor |
| US20170201401A1 (en) * | 2014-07-09 | 2017-07-13 | Ge Intelligent Platforms, Inc. | Methods, systems, and computer readable storage devices for performing digital hart demodulation |
| CN208271377U (en) * | 2018-04-08 | 2018-12-21 | 南京达凯电力自动化设备有限公司 | A kind of sensor that signal carrier encrypted state is controllable |
-
2018
- 2018-04-08 CN CN201810306065.7A patent/CN108765916A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101281052A (en) * | 2007-04-02 | 2008-10-08 | 周建明 | High precision low-power consumption radar liquid level instrument system |
| CN102405496A (en) * | 2009-02-20 | 2012-04-04 | Cis电子工业有限公司 | Sensor module and sensor module manufacturing method |
| CN102564530A (en) * | 2011-12-12 | 2012-07-11 | 西安福安创意咨询有限责任公司 | Intelligent two-wire photoelectric level transmitter with current ranging from 4mA to 20mA |
| CN202720025U (en) * | 2012-06-15 | 2013-02-06 | 上海自动化仪表股份有限公司 | Electric buoy level gauge based on highway addressable remote transducer (HART) communication |
| US20170201401A1 (en) * | 2014-07-09 | 2017-07-13 | Ge Intelligent Platforms, Inc. | Methods, systems, and computer readable storage devices for performing digital hart demodulation |
| CN205482995U (en) * | 2016-01-20 | 2016-08-17 | 吴同旺 | Intelligence acoustic wave sensor |
| CN208271377U (en) * | 2018-04-08 | 2018-12-21 | 南京达凯电力自动化设备有限公司 | A kind of sensor that signal carrier encrypted state is controllable |
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