CN104457850A - Signal processing system and method - Google Patents
Signal processing system and method Download PDFInfo
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- CN104457850A CN104457850A CN201410723484.2A CN201410723484A CN104457850A CN 104457850 A CN104457850 A CN 104457850A CN 201410723484 A CN201410723484 A CN 201410723484A CN 104457850 A CN104457850 A CN 104457850A
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Abstract
The invention relates to the technical field of signal processing, in particular to a signal processing system and method for ships. The system comprises an acquisition unit arranged at the position of a functional unit of a ship, a processing unit connected with the acquisition unit, a control unit connected with the processing unit, and a communication unit connected with the control unit and a display unit and used for receiving an operation state signal and converting the operation state signal into an operation state signal matched with the format of the communication module to be transmitted to the display unit, and the display unit displays the operating state signal. The signal processing system and method have the advantages that multiple types of acquired signals can be converted, analyzing and processing can be conducted through the processing unit so as to achieve processed acquired signal output matched with the acquired signals. The technical scheme can be matched with various marine sensors, compatibility is high, remote transmission can be conducted through the communication module, and intelligent monitoring of ships can be well achieved.
Description
Technical field
The present invention relates to a kind of signal processing technology field, particularly relate to a kind of boats and ships signal processing system and disposal route.
Background technology
Modern ships is intelligent, informationalized development trend, has higher requirement to data acquisition process, monitoring of equipment.Along with the development of observation and control technology, be that the data acquisition system (DAS) of core has obtained at measurement and control area and applies more and more widely, for industrial automation provides good support with embedded computer., usually only for the key parameter of key equipment, there is the incomplete situation of type of image data, and only use analogue instrument to show on the spot in part occasion, can not Long-range Data Transmission be carried out, can not display interface be configured in early stage boats and ships monitoring system.In present boats and ships monitoring system, in order to gather more device parameter to form marine informized network, usually need to use various types of sensor, and then produce various types of detection signal, thus how processing various types of collection signal and carry out Long-range Data Transmission and show, is the urgent problem that modern ships monitoring system faces.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of signal processing system and the signal processing method that support multiple collection signal.
A kind of signal processing system, wherein: comprise
Collecting unit, is arranged at the functional unit place of boats and ships, for gathering the current operating conditions of detected device, and forms an image data output; Collecting unit is formed primarily of a plurality of sensor, and forms the output of a plurality of image data type;
Processing unit, connects described collecting unit, exports in order to select predetermined tupe formation one collection signal after treatment according to the data type of described image data;
Control module, connects described processing unit, in order to receive the described collection signal after process, forms an operating state signal export according to the described collection signal after process;
Communication module, connect described control module and display unit respectively, for receiving described operating state signal, and described operating state signal is converted into the described operating state signal matched with described communication module form and transfers to described display unit, described display unit shows described operating state signal.
Preferably, described data type comprises voltage class signal, current capacity signal, resistance class signal, frequency class signal.
Preferably, described change-over circuit comprises,
First change-over circuit, input end connects output terminal corresponding to the described data type that matches with it; Output terminal connects an A/D change-over circuit;
Second change-over circuit, input end connects output terminal corresponding to the described data type that matches with it; Output terminal connects described A/D change-over circuit;
3rd change-over circuit, input end connects output terminal corresponding to the described data type that matches with it; Output terminal connects described A/D change-over circuit;
4th change-over circuit, input end connects output terminal corresponding to the described data type that matches with it, and output terminal connects described control module.
Preferably, described first change-over circuit is formed primarily of discharge circuit.
Preferably, described second change-over circuit mainly contains precision resistance formation.
Preferably, described 3rd change-over circuit, comprise unbalanced bridge, described unbalanced bridge has a power end, the first bridge output, the second bridge output, earth terminal;
One first operational amplifier, comprise the first normal phase input end, the first inverting input, the first output terminal, described first normal phase input end connects described first bridge output by the 4th resistance, and described first normal phase input end connects described earth terminal by the first electric capacity; Described first inverting input connects described first output terminal;
One second operational amplifier, comprise the second normal phase input end, the second inverting input, the second output terminal, described second normal phase input end connects described second bridge output by the 5th circuit, and described second normal phase input end connects described earth terminal by the second electric capacity; Described second inverting input connects described second output terminal;
One the 3rd operational amplifier, comprises the 3rd normal phase input end, the 3rd inverting input, the 3rd output terminal;
Described 3rd normal phase input end connects described second output terminal by the 8th resistance; Described 3rd normal phase input end connects described earth terminal by the 9th resistance;
Described 3rd inverting input connects described first output terminal by the 6th circuit; Described 3rd inverting input connects described 3rd output terminal by the 7th resistance; Described 3rd output terminal forms the output terminal of described 3rd change-over circuit;
Wherein said unbalanced bridge is made up of the first resistance, the second resistance, the 3rd resistance, and described first resistance is connected between described power end and described first bridge output; Described second resistance is connected between described power end and described second bridge output; Described 3rd resistance is connected between described second bridge output and described earth terminal,
The described collection signal corresponding with the described data type that described 3rd change-over circuit matches is connected to described first bridge output and is connected with between described earth terminal.
Preferably, described 4th change-over circuit, comprises one first triode, one second triode, one the 3rd triode, input end, power end, earth terminal;
The described collection signal corresponding with the described data type that described 4th change-over circuit matches connects described input end;
Described input end connects one the 3rd node by the 12 resistance, and described power end connects described input end by the 11 resistance;
The 13 resistance and the 3rd electric capacity is connected in parallel between described 3rd node and described earth terminal;
The collector of described first triode connects the base stage of described second triode, and base stage connects described 3rd node by the 14 resistance, and emitter connects described earth terminal;
The collector of described second triode connects described power end by the 17 resistance, and base stage connects described power end by the 15 resistance, and emitter connects described earth terminal; The collector of described second triode connects the base stage of described first triode by the 16 resistance;
The collector of described 3rd triode connects described power end by the 20 resistance, and base stage connects the collector of described second triode by the 18 resistance; Between the base stage that described 19 resistance is connected to described 3rd triode and described earth terminal; The collector of described 3rd triode forms the output terminal of described 4th change-over circuit.
A kind of signal processing method, wherein: comprise
Step 1, the collection of control collecting unit are detected the current operating conditions of device, and form an image data output;
Step 2, controlled processing unit select predetermined tupe formation one collection signal after treatment to export according to the data type of described image data;
Step 3, control one control module receive process after described collection signal, according to process after described collection signal formed one operating state signal export;
Step 4, communication control module receive described operating state signal, and described operating state signal are converted into the described operating state signal matched with described communication module form and transfer to display unit,
Step 5, control described display unit and show described operating state signal.
Compared with prior art, the present invention has the following advantages: pass through technique scheme, can change polytype collection signal, carry out analyzing and processing by processing unit, export with the collection signal after obtaining the process that matches with gathered collection signal.This technical scheme can coordinate multiple marine sensor, and compatibility is comparatively wide, carries out remote transmission simultaneously, can complete the intellectual monitoring task of ship equipment well by communication module.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the connection diagram of the 3rd change-over circuit in the present invention;
Fig. 3 is the connection diagram of the 4th change-over circuit in the present invention;
Fig. 4 is the waveform schematic diagram of the 4th change-over circuit in the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described, but not as limiting to the invention.
As shown in Figure 1, a kind of signal processing system, wherein: comprise
Collecting unit, is arranged at the functional unit place of boats and ships, for gathering the current operating conditions of detected device, and forms an image data output; Collecting unit can have several sensors formation collecting unit to be formed primarily of a plurality of sensor, and forms the output of plurality of data type; Wherein functional unit can be main frame, gear case, hydraulic pump etc.
Processing unit, connects described collecting unit, exports in order to tupe formation one collection signal after treatment predetermined according to described image data type selecting; Described image data type comprises voltage class signal, current capacity signal, resistance class signal, frequency class signal.
Control module, connects described processing unit, in order to receive the described collection signal after process, sits digital filtering, calculation process to the described collection signal after process, forms an operating state signal and export; Digital filtering and calculation process are carried out to the input signal data collected;
Communication module, connect described control module and display unit respectively, for receiving described operating state signal, and described operating state signal being converted into the described operating state signal extremely described display unit matched with described communication module form, described display unit shows described operating state signal.Communication module can bus form transmission operating state signal.Communication module can adopt CAN transport module.The logic level transition of the operating state signal sent by control module is the differential level output of CAN, the isolation features simultaneously had and electrostatic protective function.
Display unit can show for intelligent liquid-crystal screen display, also can be the remote display terminals that other has CAN interface.
Principle of work of the present invention is: collecting unit is detected the current operating conditions of device, and forms an image data output; The image data that several sensors export can be divided into voltage class signal, current capacity signal, resistance class signal, frequency class signal.Processing unit inside can comprise a plurality of change-over circuit, and the collection signal after voltage class signal, current capacity signal, resistance class signal and frequency class signal are converted into the process matched with control module signal format exports.Control module receives the described collection signal after process, forms an operating state signal export according to the described collection signal after process; Communication module receives described operating state signal, and described operating state signal is converted into the described operating state signal extremely described display unit matched with described communication module form, and described display unit shows described operating state signal.
Pass through technique scheme, can change polytype collection signal, analyzing and processing is carried out by processing unit, collection signal after the process matched with the collection signal obtained with gather exports, the collection signal handled well is formed one and can be exported by the state displaying signal that communication module transmits by control module, state displaying signal can transfer to intelligent liquid-crystal screen display and show, also can transfer to the remote display terminals that other has CAN interface.This technical scheme can coordinate multiple marine sensor, and compatibility is comparatively wide, carries out remote transmission simultaneously, can complete the intellectual monitoring task of ship equipment well by bus.
Preferably: described change-over circuit comprises, the first change-over circuit, input end connects the corresponding output terminal of the described signal type matched with it; Output terminal connects an A/D change-over circuit; Second change-over circuit, input end connects the output terminal of the correspondence of the described signal type matched with it; Output terminal connects described A/D change-over circuit; 3rd change-over circuit, input end connects output terminal corresponding to the described signal type that matches with it; Output terminal connects described A/D change-over circuit; 4th change-over circuit, input end connects output terminal corresponding to the described signal type that matches with it, and output terminal connects described control module.First conversion circuit for the treatment of voltage class signal, the second change-over circuit for the treatment of current capacity signal, the 3rd conversion circuit for the treatment of resistance class signal, the 4th change-over circuit for the treatment of frequency class signal.
Preferably: described first change-over circuit is formed primarily of discharge circuit.Utilize discharge circuit to carry out proportional zoom to voltage class signal, with the range avoiding input voltage to exceed processing unit, select suitable zoom factor can expand the working range of processing unit, improve sampling precision.
Preferably: described second change-over circuit mainly contains precision resistance and formed.Current capacity signal, by precision resistance, exports by current capacity signal being converted into by this resistance voltage value signal.
Preferably: as shown in Figure 2, described 3rd change-over circuit, a unbalanced bridge, described unbalanced bridge has a power end, the first bridge output 1, second bridge output 2, earth terminal;
One first operational amplifier A 1, comprise the first normal phase input end, the first inverting input, the first output terminal, described first normal phase input end connects described first bridge output 1 by the 4th resistance R4, and described first normal phase input end connects described earth terminal by the first electric capacity; Described first inverting input connects described first output terminal;
One second operational amplifier A 2, comprise the second normal phase input end, the second inverting input, the second output terminal, described second normal phase input end connects described second bridge output 2 by the 5th resistance R5R5, and described second normal phase input end connects described earth terminal by the second electric capacity; Described second inverting input connects described second output terminal;
One the 3rd operational amplifier A 3, comprises the 3rd normal phase input end, the 3rd inverting input, the 3rd output terminal;
Described 3rd normal phase input end connects described second output terminal by the 8th resistance R8; Described 3rd normal phase input end connects described earth terminal by the 9th resistance R9;
Described 3rd inverting input connects described first output terminal by the 6th resistance R6; Described 3rd inverting input connects described 3rd output terminal by the 7th resistance R7; Described 3rd output terminal forms the output terminal of described 3rd change-over circuit;
Wherein said unbalanced bridge is made up of the first resistance R1, the second resistance R2, the 3rd resistance R3, and described first resistance R1 is connected between described power end and described first bridge output 1; Described second resistance R2 is connected between described power end and described second bridge output 2; Described 3rd resistance R3 is connected between described second bridge output 2 and described earth terminal,
The described collection signal corresponding with the described data type that described 3rd change-over circuit matches is connected to described first bridge output 1 and is connected with between described earth terminal.
Resistance class signal is converted into the voltage signal matched with it to export, the resistance class signal matched with described 3rd change-over circuit is connected to the first bridge output 1 and is connected with between described earth terminal.A unbalanced bridge is formed with the first resistance R1, the second resistance R2, the 3rd resistance R3, first operational amplifier A 1, second operational amplifier A 2 is for the formation of a voltage follower, 3rd operational amplifier A 3 forms the subtracter that is with proportion adjustment, the output voltage V of the 3rd conversion circuit with resistance the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9
outwith the pass of resistance class signal be:
Wherein:
Vcc is the voltage that power end exports; Vout is the output voltage of the 3rd conversion circuit; Rt is the resistance of testing resistance; R1 is the resistance of the first resistance R1; R2 is the resistance of the second resistance; R3 is the resistance of the 3rd resistance; R4 is the resistance of the 4th resistance; R5 is the resistance of the 5th resistance; R6 is the resistance of the 6th resistance; R7 is the resistance of the 7th resistance; R8 is the resistance of the 8th resistance; R9 is the resistance of the 9th resistance.
Further, the resistance of the first resistance R1, the second resistance R2, the 3rd resistance R3 is identical, and the ratio of the 6th resistance R6 and the 7th resistance R7 equals the ratio of the 9th resistance R9 and the 8th resistance R8.
As further preferred version, as shown in Figure 3, described 4th change-over circuit, comprises one first triode T1, one second triode T2, one the 3rd triode T3, input end, power end, earth terminal;
The described collection signal corresponding with the described data type that described 4th change-over circuit matches connects described input end;
Described input end connects one the 3rd node 3 by the 12 resistance R12, and described power end connects described input end by the 11 resistance R11;
The 13 resistance R13 and the 3rd electric capacity is connected in parallel between described 3rd node 3 and described earth terminal;
The collector of described first triode T1 connects the base stage of described second triode T2, and base stage connects described 3rd node 3 by the 14 resistance R14, and emitter connects described earth terminal;
The collector of described second triode T2 connects described power end by the 17 resistance R17, and base stage connects described power end by the 15 resistance R15, and emitter connects described earth terminal; The collector of described second triode T2 connects the base stage of described first triode T1 by the 16 resistance R16;
The collector of described 3rd triode T3 connects described power end by the 20 resistance R20, and base stage connects the collector of described second triode T2 by the 18 resistance R18; Between the base stage that described 19 resistance R19 is connected to described 3rd triode T3 and described earth terminal; The collector of described 3rd triode T3 forms the output terminal of described 4th change-over circuit.
As shown in Figure 4, the 4th change-over circuit exports in order to frequency signal to be shaped as standard block signal, and control module can catch the rising edge of standard block signal (level redirect), can triggered interrupts when control module detects rising edge.If the clock frequency of the timer of control module inside is F, when occurring to interrupt for the first time, the count value m of the counter records timer of control module inside, when occurring to interrupt for the N time, the count value k of the counter records timer of control module inside, then can calculate frequency class signal, computing method are:
f＝F×(N-1)/(k-m)
Wherein, f is the frequency values of frequency class signal;
F is the clock frequency value of timer;
N is the rising edge quantity of standard block;
When m is first rising edge triggering of standard block, the count value of counter records;
When k is N number of rising edge triggering of standard block, the count value of counter records.
A kind of signal processing method, wherein: comprise
Step 1, the collection of control collecting unit are detected the current operating conditions of device, and form an image data output;
The tupe formation one collection signal output after treatment that step 2, controlled processing unit are predetermined according to described image data type selecting;
Step 3, control one control module receive process after described collection signal, according to process after described collection signal formed one operating state signal export;
Described operating state signal for receiving described operating state signal, and is converted into the described operating state signal matched with described communication module form and transfers to display unit by step 4, communication control module,
Step 5, control display unit show described operating state signal.
The foregoing is only preferred embodiment of the present invention; not thereby embodiments of the present invention and protection domain is limited; to those skilled in the art; should recognize and all should be included in the scheme that equivalent replacement done by all utilizations instructions of the present invention and diagramatic content and apparent change obtain in protection scope of the present invention.
Claims (8)
1. a signal processing system, is characterized in that: comprise
Collecting unit, is arranged at the predetermined function unit place of boats and ships, for gathering the current operating conditions of detected device, and forms an image data output; Described collecting unit is formed primarily of a plurality of sensor, and obtains a plurality of data type output;
Processing unit, connects described collecting unit, exports in order to select predetermined tupe formation one collection signal after treatment according to the data type of described image data;
Control module, connects described processing unit, in order to receive the described collection signal after process, forms an operating state signal export according to the described collection signal after process;
Communication module, connect described control module and display unit respectively, for receiving described operating state signal, and described operating state signal being converted into the described operating state signal extremely described display unit matched with described communication module form, described display unit shows described operating state signal.
2. signal processing system according to claim 1, is characterized in that: described data type comprises voltage class signal, current capacity signal, resistance class signal, frequency class signal.
3. signal processing system according to claim 1, is characterized in that: described change-over circuit comprises,
First change-over circuit, input end connects the described data type that matches with it in the output terminal of correspondence; Output terminal connects an A/D change-over circuit;
Second change-over circuit, input end connects the described data type that matches with it in the output terminal of correspondence; Output terminal connects described A/D change-over circuit;
3rd change-over circuit, input end connects the described data type that matches with it in the output terminal of correspondence; Output terminal connects described A/D change-over circuit;
4th change-over circuit, input end connects the described data type that matches with it in the output terminal of correspondence, and output terminal connects described control module.
4. signal processing system according to claim 3, is characterized in that: described first change-over circuit is formed primarily of discharge circuit.
5. signal processing system according to claim 3, is characterized in that: described second change-over circuit mainly contains precision resistance and formed.
6. signal processing system according to claim 3, is characterized in that: described 3rd change-over circuit, comprises
One unbalanced bridge, described unbalanced bridge has a power end, the first bridge output, the second bridge output, earth terminal;
One first operational amplifier, comprise the first normal phase input end, the first inverting input, the first output terminal, described first normal phase input end connects described first bridge output by the 4th resistance, and described first normal phase input end connects described earth terminal by the first electric capacity; Described first inverting input connects described first output terminal;
One second operational amplifier, comprise the second normal phase input end, the second inverting input, the second output terminal, described second normal phase input end connects described second bridge output by the 5th resistance, and described second normal phase input end connects described earth terminal by the second electric capacity; Described second inverting input connects described second output terminal;
One the 3rd operational amplifier, comprises the 3rd normal phase input end, the 3rd inverting input, the 3rd output terminal;
Described 3rd normal phase input end connects described second output terminal by the 8th resistance; Described 3rd normal phase input end connects described earth terminal by the 9th resistance;
Described 3rd inverting input connects described first output terminal by the 6th resistance; Described 3rd inverting input connects described 3rd output terminal by the 7th resistance; Described 3rd output terminal forms the output terminal of described 3rd change-over circuit;
Wherein said unbalanced bridge is made up of the first resistance, the second resistance, the 3rd resistance, and described first resistance is connected between described power end and described first bridge output; Described second resistance is connected between described power end and described second bridge output; Described 3rd resistance is connected between described second bridge output and described earth terminal,
The described collection signal corresponding with the described data type that described 3rd change-over circuit matches is connected to described first bridge output and is connected with between described earth terminal.
7. signal processing system according to claim 3, is characterized in that: described 4th change-over circuit, comprises one first triode, one second triode, one the 3rd triode, input end, power end, earth terminal;
The described collection signal corresponding with the described data type that described 4th change-over circuit matches connects described input end;
Described input end connects one the 3rd node by the 12 resistance, and described power end connects described input end by the 11 resistance;
The 13 resistance and the 3rd electric capacity is connected in parallel between described 3rd node and described earth terminal;
The collector of described first triode connects the base stage of described second triode, and base stage connects described 3rd node by the 14 resistance, and emitter connects described earth terminal;
The collector of described second triode connects described power end by the 17 resistance, and base stage connects described power end by the 15 resistance, and emitter connects described earth terminal; The collector of described second triode connects the base stage of described first triode by the 16 resistance;
The collector of described 3rd triode connects described power end by the 20 resistance, and base stage connects the collector of described second triode by the 18 resistance; Between the base stage that described 19 resistance is connected to described 3rd triode and described earth terminal; The collector of described 3rd triode forms the output terminal of described 4th change-over circuit.
8. a signal processing method, is characterized in that: comprise
Step 1, the collection of control collecting unit are detected the current operating conditions of device, and form an image data output;
Step 2, controlled processing unit select predetermined tupe formation one collection signal after treatment to export according to the data type of described image data;
Step 3, control one control module receive process after described collection signal, according to process after described collection signal formed one operating state signal export;
Step 4, communication control module receive described operating state signal, and described operating state signal are converted into the described operating state signal matched with described communication module form and transfer to display unit,
Step 5, control described display unit and show described operating state signal.
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Application publication date: 20150325 |
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