CN106124218A - For monitoring or control the method and system of engine - Google Patents
For monitoring or control the method and system of engine Download PDFInfo
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- CN106124218A CN106124218A CN201610338476.5A CN201610338476A CN106124218A CN 106124218 A CN106124218 A CN 106124218A CN 201610338476 A CN201610338476 A CN 201610338476A CN 106124218 A CN106124218 A CN 106124218A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/05—Testing internal-combustion engines by combined monitoring of two or more different engine parameters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/7163—Spread spectrum techniques using impulse radio
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/06—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a temperature sensor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/40—Arrangements in telecontrol or telemetry systems using a wireless architecture
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
For monitoring or control the method and system of engine.A kind of method for monitoring or control engine, it is preferably used for the internal combustion engine of Ship Propeling, the method comprises the steps: to provide at least one sensor, at least one receptor and computing unit, including UWB transmitter and preferably UWB receptor, this sensor is attached to engine, is attached to engine internal or is attached very close to engine；Utilize at least one particular engine value of at least one sensor measurement；The engine value recorded is sent by the UWB transmitter of sensor；At least one receptor is utilized to receive the UWB signal of sensor.The signal that receptor receives according to from described UWB signal extract measure to engine value and for determining that the mode that the locator value of sensing station extracts from described UWB signal is processed by computing unit, wherein this locator value is extracted by fingerprint recognition and/or method of geometry.
Description
Technical field
The present invention relates to the method and system for monitoring or control engine, engine internal combustion engine specifically, and relate to
And the purposes of this system according to independent claims preamble.
Background technology
Engine, particularly internal combustion engine, in order to correctly work and the consideration of higher efficiency, it is necessary to monitored and control.Special
Not, the most different measured values is incorporated in control mechanism.Need the extremely reliable communication from sensor to reader, from
And obtain the engine monitoring/engine control of robustness.
In the related, sensor obtain measured value and be sent to control unit (also referred to as via wired system
Central location or computing unit).This systematic comparison is complicated.Each sensor self needs single cable, and these cables lead to
The position placed to sensor in often needing to be installed in engine.The environment of engine internal and surrounding is generally relatively more severe, and
And require to allow for resisting greasy dirt or the parts of mechanical stress.This can cause the expense maintained too high, and owing to changing
The free time of device is long causes the replacement cost of parts too high.
Make a lot of trial with by replacing wired system to overcome these defects with infinite system.Sensor uses
Measurement data is sent to reader device (or to several reader devices) by radio transmitters, and it is wireless that use put by fetching device
The measurement data decoding that receiver architecture will be sent.Alternatively, it is necessary at the downlink from reader to sensor
In the case of, reader device can have radio transmitters thus send the data to sensor, and sensor needs wireless subsequently
Receptor.Under severe conditions, common wireless system cannot ensure reliability, reliability for the application considered but
It is necessary.Especially since the chaff of intensive stacking (propagate due to multipath footpath and cause shade and stronger attenuation) is led
Cause adverse environment (along engine and therein), interfere or scattering effect generally makes to comment from the signal sent
Estimate multiple proper signal or measured value.The multiple method of alternative uses needs the technology that sight line connects, this in engine internal or
Around person not typically possible.
In wired and wireless two kinds of systems, sensor need addressed with regard to its position and/or need with its provide every
Individual value or signal send the additional information about its position.Accordingly, it would be desirable to additional resource, such as, time or frequency.
Summary of the invention
It is an object of the invention to avoid multiple defects of prior art.Specifically, it is an object of the invention to provide
Can reliably wireless signal transmission or measured value and the most in the presence of a harsh environment to sending sensor under adverse circumstances
The method and system reliably positioned.
These and other target is obtained according to independent claims characteristic.The most favourable scheme is subordinate
The part of claim.
A kind of method for monitoring or control engine, the method comprises the steps:
-at least one sensor is provided, at least one receptor and computing unit.This at least one sensor includes
UWB transmitter and preferably UWB receptor.This sensor is attached to engine, is attached to engine internal or very close to drawing
Hold up and be attached.
-utilize at least one sensor to measure at least one particular engine value.
-by the particular engine value measured by the UWB transmitter transmission of sensor.
-utilize at least one receptor to receive described sensor-UWB signal.
-described the signal that received by receptor is according to the mode extracting the engine value measured from described UWB signal
Processed by computing unit.It addition, extract the locator value of the position for determining sensor from described UWB signal.This value is passed through
Fingerprint recognition and/or method of geometry are extracted.
Therefore, this value can carry by fingerprint recognition and method of geometry, by fingerprint recognition or by method of geometry
Take.
The impulse response of channel is described by the way of signal was changed when this channel sends.At the environment considered
In this change due to multipath transmisstion (its be expect, such as due to the scattering caused on metal surface, diffraction or reflection).
Further, since path loss (depending on the decay of distance) signal attenuation on the road go to receptor.
Therefore, send signal by propagation channel, and signal is modified or varied until being received as at receptor
Only.Therefore, propagation channel includes position special characteristic.These position special characteristics may be used for positioning sensor.Logical
Often, some of them feature is being estimated during transmitter communication by receptor.Such as, receptor monitoring institute
The signal intensity received, or coherent receiver estimation is just.Therefore, can complete synergistically while transmission is decoded
Location, i.e. need not be exclusively used in the specific transmission phase of location.
Preferably, described engine is internal combustion engine, and especially for the internal combustion engine of Ship Propeling.
Engine value can for example, temperature, such as EGT or connecting rod bearing temperature, pressure (such as lubrication pressure
Power or cooling water pressure), flow (such as flow of lubrication or cooling oil flow), and position, such as piston position or
Person's curved bar position.Other values are also possible.Typically for every class numerical value, use specific sensor.
UWB is the abbreviation of ultra broadband.Under this background, UWB means to use the technology of at least 500 megahertz bandwidth.
Generally, UWB targeting scheme can classify as method of geometry and fingerprint identification method.Some in method of geometry use
For multiple readers (or anchor) of polygon measurement or trilateration art, such as based on the flight time (ToF) estimate or
Received signal strength (RSS) is estimated.
Fingerprint identification method generally uses the position special characteristic of propagation channel to determine the position of sensor.Extracting this
After a little features, perform the coupling with corresponding hypothesis/position candidate expected value；These positions or by measure (training rank
Section in) or modeling gather.
Below, it is provided that the brief overview of the localization method relevant to this document.
Based on ToF or the method for geometry of differential time of flight (TDoF):
Trilateration or multilateration are typical geometry location methods.According to common definition, trilateration
Method and multilateration be, estimate based on the flight time (ToF) for the distance between respective sensor and reader or
Differential time of flight (TDoF) estimates to assess the position of sensor (or agency)；These estimate to be normally based on reader (anchor) dress
Put the place's corresponding time of advent (ToA) measurement result.These methods often assume that all of reader position is known, and
Reader device synchronizes about the common clock used as absolute time reference.According to these it is assumed that for side based on ToF
Method, sensor must be synchronize with reader.
Method of geometry based on multipath component gain:
The method may be considered a kind of method for reducing signal processing complexity.It not to try to survey from ToF or ToA
Extracting positional information in amount result, this plan uses received signal strength tolerance to perform trilateration/polygon measurement.
Both approaches is only when exist between sensor and reader when that sight line (LOS) connecting could accurate work
Make.But, think over environment on hand, i.e. in engine internal or engine, hint is all or specific line of sight connects pole and has
It is likely to be interrupted.So measure the value or the LOS multipath component gain time of advent arrived owing to having distorted, can have a strong impact on calmly
Position.Therefore, both approaches seems unreliable to required application.
Below, the execution two kinds of methods according to the inventive method are described.
Fingerprint recognition based on multipath power gain:
The multipath power gain caused by given wireless channel, the measurement result of the received signal strength sending signal is suitable
Close the intrinsic selection of the position special characteristic of the propagation channel of non-line-of-sight (NLOS) situation.The method utilizes based on one group of yield value
The specification area determined, this group yield value determines in the training stage.The sensor power gain extracted with correspond to
The power gain in each region compares.The region of the power gain that the power gain that has and extracted is close is the most selected
Select as sensor affiliated area.
Fingerprint recognition (based on channel impulse response) based on correlation coefficient tolerance:
Another way utilizes for feature extraction and is included in the intrarecord intrinsic fading information of UWB channel impulse response
Mode is directly formed tolerance, and that observed and training pulse response record multipath fading characteristic is compared by this tolerance
Relatively.The convenient method of do so is the experience correlation coefficient of the channel impulse response record included in calculating observation, and comes
The training pulse response of record before a group of self-training observation.
This computing unit can be processor, its can integrated in the receiver.Alternatively, computing unit can be independent
Unit or can be integrated in in the dedicated control system of this engine.
This method makes do not having additional information (as noted, coherent receiver estimation channel impulse response
Thus to the decoding data sent) in the case of determine the position of sensor.Therefore a signal received can
Offer exceedes a kind of information.Such as, send temperature signal, and Extracting temperature and additional positional information.
The method can also make in engine internal, and such as crankcase is inside, and engine outer communicates and senses
Device positions.
The method also includes mode of operation and training mode.In training mode, reference value is gathered.
Therefore, the method Independent adjustable and be suitable to the structure of different environment or engine.
Use fingerprint identification method that sensor location generally included two stages: training stage and positioning stage.
For the example of fingerprint recognition based on channel impulse response dependency, in the training stage, transmitter must quilt
It is arranged on the most potential position, and must be for each location records channel impulse response of each reader.When wanting
Use different characteristic when perform fingerprint recognition, need for store at each potential sensing station these other special
Levy.It is also possible to the complete information (that is, the sampled version with the signal received of transmission) alternatively storing on each position, and
And for the different multiple features of fingerprint recognition metric calculation (such as, RMS delay transit, LOS path delay etc.).
The channel characteristics of paying close attention to observed for unknown sensing station mates with the value of all storages before of this feature,
The unique positions of each value corresponding training stage.This coupling can be the function arbitrarily geared to actual circumstances, such as, variance, mutually
Close.Depend on selected adaptation function, it is thus achieved that the estimation of unknown position is as (or multiple training position, training position
The interpolation arbitrarily geared to actual circumstances), it maximizes (such as, for relevant) with making selected tolerance or minimizes (such as,
For variance) record value corresponding.
Certainly it is known that the existing priori about possible sensing station makes the simple many and/or method of robust.
As example, it may be considered that only one of which sensor is placed on the situation on each cylinder of engine.In this case, it is not necessary that really
Determine the exact position of sensor, on the contrary each sensor identification respective cylinder to be sufficient to-orientation problem is converted into more
The classification problem easily solved.
The location of sensor can be by relatively coming the fading characteristic of the channel impulse response observed and reference value
Determine.
It not to use complete channel impulse response, utilize particular channel fading characteristic to carry out alignment sensor and be sufficient to.
Another kind of implement described by the scheme of method can be according to the specific dependency of reference value, the most mutual
Closing the location determining sensor, described reference value is preferably the position special characteristic of communication channel.
The method scheme could be for the typical case of the coupling step of fingerprint recognition.It is the institute for unknown position
The maximization of the cross-correlation coefficient between the channel impulse response (CIR) and the CIR of multiple position candidate that observe.May be used for
The position special characteristic of fingerprint recognition can be channel impulse response, path delay, power delay profile, reception energy/power
When gain (such as, in the strongest path/the first arrives path, or in all important paths), average excess delay, maximum
Prolong extension etc..
Fingerprint recognition can be based on multipath power gain.
This localization method belongs to fingerprinting scheme, and wherein multipath power gain (or sending the receiving intensity of signal) is made
For fingerprint characteristic, and observed and difference between the multipath power gain of candidate as adaptation function.For example, it is possible to
Implement according to following: during training mode, transmitter is moved to different possible positions, and the phase of the signal received
The multipath power gain answered is recorded and is stored in data base.Hereafter under mode of operation, the multipath of the signal received
Power gain compares with the record in this data base and the position illustrating maximum match degree is elected as the position of transmitter.
Fingerprint recognition can correlation coefficient based on channel impulse response, its with previously during training mode the one of record
The training pulse response of group record compares.
Channel impulse response describes all association attributeses of channel, particularly includes the position that may be used for the location of transmitter
Put dependence characteristics.In any case owing to coherent receiver structure needs to estimate channel impulse response, estimating based on these can be non-
Often effectively complete location.
Received signal can be subsequently processed, thus extracts measured value and locator value.
For both values, it is possible to use complete signal, and consider that whole bandwidth is to determine required value.
Alternatively or additionally, described signal can be split and/or filter becomes independent sector, and is processed in parallel
Thus extract measured value and locator value.
This relevant portion making it possible to individually consider received signal is so that it is determined that analog value.Calculating power side
Face, such as, processor power, determining can be the lightest.
The transmission of signal may be implemented as impulse radio modulation or spread-spectrum modulation.
Utilize the broadband system of such as impulse radio and spread spectrum system, it is possible to communicate reliably with accurately
Location.It addition, these systems have the potentiality implemented at low-power consumption low-complexity, so that for the application considered
Attractive.
Advantageously, described signal is received by multiple antennas.
This corresponding signal making it possible to receive by comparing each antenna analyzes signal.Multiple antennas can also be carried
High spatial resolution.
The quantity increasing the antenna amount for each reader or increase receptor both can increase reliable communications
Property and Position location accuracy.Generally, if every other systematic parameter (reader quantity, receive power etc.) with according to existing
The wireless system of technology more all keeps identical, increases signal bandwidth and can increase communication robustness by frequency diversity, passes through
The preferable temporal resolution of received signal increases positioning performance, thus potentially allows for keeping prior art system
Unite while the identical communication and/or positioning performance that can reach, reduce receptor quantity.
Sensor continuously transmits power 4.9Ghz minimum 10dBm's used above, may be minimum at more than 5Ghz
13dBm。
Preferably, in implementation as described herein, additional object is to utilize very may be used of minimum transmit power
The communication leaned on, simultaneously (such as, true by FFC (Federal Communications Committee) standard to threshold value not over about transmit power
Fixed corresponding limit value).
Except supervision standard, transmit power is limited to make the maximized needs of battery life of sensor.Therefore pin is found
Critically important to sensor to the minimum transmit power of desired reliability level.
In engine for boat and on multiple representative regions perform emulation based on measurement result illustrate relative to being examined
The application considered, has the feasibility of high reliability communications and location.
Preferably, in the case of sensor is replaced, know based on fingerprint recognition and/or method of geometry computing unit
Not new sensor.
This makes the wireless feature that is automatically positioned be possibly realized, and it can be used for certain " plug and play " configuration: system is based on it
Position identifies new sensor automatically；Thus greatly reduce the overhead of new sensors association to network, and tie up
It is the most convenient to protect.The sensor network with very many sensors largely has benefited from this feature.
Preferably, the sensor on engine moveable element it is arranged on tracked based on locator value.
Therefore, moving component, such as inside engine for boat, can be sent by multiple sensors and follow the tracks of.
Another aspect of the present invention relates to a kind of system for monitoring or control engine, preferably by as described herein
Method.This system includes at least one sensor, and this at least one sensor includes for sending signal and specifically measuring
The UWB transmitter of value.This system includes at least one receptor for receiving the signal sent from sensor.It addition, this is
System includes computing unit, preferably as described herein and for processing received signal.
Computing unit (or central location/control unit) include for decoding with process received by the communicating of data
Unit and for based on relative to the correlation technique described by method.Fingerprint recognition and/or method of geometry position this at least
The positioning unit of one sensor.
System can include at least one exhaust gas temperature sensor.
Alternatively, at least one sensor can be arranged in engine, for the temperature of measuring machine crank rod bearing.Cause
This, utilize the only one sensor worked according to method described here, and existing system just can more effectively work, and because of
This, it is worth for utilizing system conversion single-sensor as described herein.Therefore, minimum it is configured to a temperature sensing
Device, a receptor and a computing unit.
Typically, the network being used for monitoring and/or controlling engine includes at least one temperature sensor, such as EGT
Sensor, cooling water sensor, lubricating oil sensor, fuel oil sensor, gas temperature sensor, bearing temperature sensor；
And flow transducer, such as cooling water flow sensor, flow of lubrication sensor, exhaust gas flow sensor, servo oil stream
Quantity sensor, fuel oil flow transducer or gas flow sensor；And pressure transducer, such as cooling water pressure sensing
Device, lubricant pressure sensor, servo oil pressure sensor, fuel oil pressure sensor or gas pressure sensor；And position
Put sensor, such as piston position sensor, crankshaft position sensor, rotation gear position sensor, intake valve position sensing
Device or waste gate valve position sensor.
System can include may be installed at least one sensor followed the tracks of on motion engine parts and by positioning unit.
Therefore, the motion of moveable element can be tracked.
Another aspect of the present invention relates to internal combustion engine, and this internal combustion engine includes system as described herein.
This engine is easy to advantage that is monitored and that have system and method as described herein.
Another aspect of the present invention relates to the purposes for controlling and/or monitor internal combustion engine of system as described herein,
And this internal combustion engine is preferably the internal combustion engine in boats and ships.
This purposes makes to provide and is possibly realized for controlling and monitor the reliable system of internal combustion engine.
Advantageously, it is desirable to signal will be sent to sensor, such as, for controlling or regulating such as valve.Use institute here
The method and system described, this is the most possible.
According to preferred disposition, static sensor can be read once with every five seconds for example clock.Floating the value changed can be by every two second
Read in clock or shorter time interval.Real-time time reading is also possible.
Additionally, it is possible to only with every a measurement result, or the every ten measurement result or alternatively, per hour
Or measurement result once a day determines the position of sensor.So can reduce system complexity.
Introducing wireless sensor network to reduce installation, introduce and replace the cost of other sensors, it can promote out
Send out novel sensor kind.In addition, UWB makes reliably, low-complexity and Self-organizing Sensor Networks are possibly realized, and this is also
The new application using intensive and large scale sensor can be facilitated.
Accompanying drawing explanation
Accompanying drawing represents preferred embodiment.Accompanying drawing represents:
Fig. 1: there is the block diagram of the UWB sensor network of multiple reader；
The block diagram of Fig. 2: UWB TX node；
Fig. 3: the measurement situation on engine；
Fig. 4: another on engine measures situation, is used for being automatically positioned；
Fig. 5: joint communication and positioning flow figure.
Detailed description of the invention
Fig. 1 shows exemplary simple sensor network.Several send (TX) node and are connected to central location
Several reader devices communicate.The data decoding that it is received by reader device from sensor.Central location collection is owned
Data from reader.Sensor sends and may be implemented as impulse radio modulation, or is embodied as spread-spectrum modulation.
The example implementations of the UWB transmitter of Fig. 1 illustrates as block diagram in fig. 2.This pattern can include digital baseband UWB
Transmitter, in this UWB transmitter, some input signals, such as sensing data, user I/O (input/output) and/or come
The programming input of self-programming interface can process according to baseband modulation.Described signal can be processed in analog RF front-end and put
Greatly.Battery can be included in this mode.Sending node includes the sensor being arranged in internal combustion engine for determining engine status
(seeing Fig. 3).
Communication range is tested, in test situation include receiving the shell being positioned along testing engine away from
The signal of reader distance be gradually increased two sending node simultaneously, as shown in Figure 3.These measurement results have shown that for
The position of all records, reliable communication is possible, indicates the available communication scope of at least 10 meters, even if sensor and reader
Between signal path be blocked.
Fingerprint recognition based on channel impulse response also shows result very reliably.It is applied to being arranged on engine
The location of the gas temperature sensor in cylinder head, as shown in Figure 4.This causes and can the most reliably be obtained with effective solution
Specific classification problem.We have studied the available priori placed about sensor and coordinate between priori and reader
The effect of knowledge etc..By localization method and available priori (such as, potential sensing station or the geometry of engine)
Combination allows to obtain the effective solution to the orientation problem faced at once.
Fig. 5 illustrates the substantially general view of joint communication and position fixing process.When receiving data signal at reader, first
Coherent signal tolerance is extracted.Hereafter these tolerance are delivered to communication unit and positioning unit, wherein measure based on these, institute
The data and the location estimation that send are extracted.Finally, location estimation is associated with corresponding data, be enable to carry out as
Described further work-up, such as, based on being automatically positioned, node identification and the plug & play sensor displacement of tracking.
Therefore, by performing united communication and location, the teledata of all transmission can right with respective sensor
Position is answered to be associated, such as on engine.This is particularly useful in the case of sensor is installed on the moving component of engine,
Or sensor is needed to be replaced regularly or impromptu be arranged on non-designated position in the case of particularly useful.Offer is subject to
Benefit three exemplary use examples of joint communication and location.
One group of exhaust gas temperature sensor is arranged in the cylinder head of engine.Assume to install a sensing on each cylinder
Device, the temperature value received can be associated by reader with corresponding cylinder, and without implementing addressing mechanism to distinguish sensing
Device (such as, sends unique hardware identifier ID).
Follow the tracks of the crank pin bearing temperature sensor being arranged on the moving component of engine internal, thus offer is provided and uses
Advantage in the secondary data of monitoring engine state.
For the whole wireless remote sensing network being made up of several radio nodes, reader can maintain all the sensors position
Data base.This allows the plug-and-play feature of sensor: new sensor is easy to be installed on its desired locations and quilt
Open；Then network is necessary configuration from himself position-detection sensor function and automatically carrying out.
Except these are applied, there is also utilize the prior information arranged on motor about sensor improving (or, right
In some situation so that) location to sensor.
The detailed algorithm of particular value, i.e. exhaust gas temperature sensor above-mentioned is carried according to following illustrative methods
Supply.
As example, exhaust gas temperature sensor detects and the reading of fingerprint recognition based on location with having parallel execution of data
Take the coherent receiver at device to be contemplated by.
-exhaust gas temperature sensor determines temperature and quantifies this value.
-with multiple bits, digital temperature is encoded to be sent.
-bit is mapped as symbol waveform and sent.
-received signal is disturbed by wireless channel in the location-specific mode of transmitters and receivers.
-use the knowledge sending signal waveform, it is thus achieved that the estimation of channel impulse response (CIR).
-this CIR estimates to be passed to represent Data Detection and two functions of location, i) for Data Detection, according to sending out
Impulse waveform and CIR is sent to calculate channel matched filter.Received signal and channel matched filter are used for carrying
Take the data of transmission.Ii) for location, the institute that the CIR of estimation obtained previously in the training stage for potential position candidate
The CIR stored is associated.Send out corresponding to making the position candidate of maximized the stored CIR of this cross-correlation be selected as
Send the estimation position of sensor.
Claims (17)
1., for the method monitored or control engine, this engine is preferably used for the internal combustion engine of Ship Propeling, the method
Comprise the following steps:
-at least one sensor, at least one receptor and computing unit are provided, this at least one sensor includes ultra broadband
UWB transmitter and preferably include UWB receptor, this sensor is attached to engine, is attached to engine internal or leans on very much
Nearly engine and be attached,
-utilize described at least one particular engine value of at least one sensor measurement,
-send measured engine value by the described UWB transmitter of described sensor,
-utilize at least one receptor described to receive the UWB signal of described sensor,
It is characterized in that
According to extract from described UWB signal measured engine value and from described UWB signal extract be used for determining institute
Stating the mode of the locator value of the position of sensor, the described signal that described receptor receives is processed by described computing unit, its
In, described locator value is extracted by fingerprint recognition and/or method of geometry.
Method the most according to claim 1, it is characterised in that described method includes mode of operation and training mode, wherein, in instruction
Practice and under pattern, gather reference value.
Method the most according to claim 1 and 2, wherein, the fading characteristic of the channel impulse response by being observed
It is compared to determine the described location of described sensor with reference value.
4. according to the method according to any one of Claim 1-3, wherein, specific relevant, the most mutually according to reference value
Relevant, determine the described location of described sensor, described reference value is preferably the position special characteristic of communication channel.
5. according to the method according to any one of claim 1 to 4, it is characterised in that described fingerprint recognition is based on multipath power
Gain.
6. according to the method according to any one of claim 1 to 4, wherein, for fingerprint recognition, by the phase of channel impulse response
Pass coefficient compares with one group of training pulse response of the precedence record of record during training mode.
7. according to the method according to any one of claim 1 to 6, wherein, described signal is processed serially to extract measurement and arrives
Value and described locator value.
8. according to the method according to any one of claim 1 to 6, wherein, described signal be split and/or be filtered into multiple solely
Vertical part, and be processed in parallel to extract value and the described locator value that measurement is arrived.
9. according to method in any one of the preceding claims wherein, it is characterised in that the transmission of described signal is realized as arteries and veins
Rush radio modulation or spread-spectrum modulation.
10. according to the method according to any one of claim 1 to 9, wherein, described signal is received by multiple antennas.
11. according to method in any one of the preceding claims wherein, it is characterised in that in the case of sensor is replaced,
New sensor is identified based on described fingerprint recognition and/or described method of geometry by described computing unit.
12. according to method in any one of the preceding claims wherein, it is characterised in that be arranged on the moveable element of engine
Sensor tracked based on described location.
13. 1 kinds of systems being used for monitoring or control engine, this engine is preferably used for the internal combustion engine of Ship Propeling, the most logical
Crossing according to method in any one of the preceding claims wherein, this system includes at least one sensor, for from described sensing
Device receives and sends at least one receptor of signal and for processing the computing unit of received signal, and this is at least one years old
Individual sensor includes that UWB transmitter, described system are characterised by: described computing unit includes being received for decoding and process
To data communication unit and for positioning at least one sensor described based on fingerprint recognition and/or method of geometry
Positioning unit.
14. systems according to claim 13, it is characterised in that described system includes that at least one EGT senses
Device.
15. according to the system according to any one of claim 13 or 14, it is characterised in that at least one sensor can be installed
On motion engine parts and can be followed the tracks of by described positioning unit.
16. 1 kinds of internal combustion engines, this internal combustion engine includes according to the system according to any one of claim 13 to 15.
17. according to the system according to any one of claim 13 to 15 for controlling and/or monitor the purposes of internal combustion engine, should
Internal combustion engine is preferably the internal combustion engine in boats and ships.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP15166712.8 | 2015-05-07 | ||
| EP15166712 | 2015-05-07 |
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| CN106124218A true CN106124218A (en) | 2016-11-16 |
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| CN201610338476.5A Pending CN106124218A (en) | 2015-05-07 | 2016-05-06 | For monitoring or control the method and system of engine |
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| Country | Link |
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| KR (1) | KR20160131914A (en) |
| CN (1) | CN106124218A (en) |
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Also Published As
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