CN101368844A - Multicenter shafting vibrating wireless telemetering system and method thereof - Google Patents
Multicenter shafting vibrating wireless telemetering system and method thereof Download PDFInfo
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Abstract
The invention discloses a multi-channel shafting vibration wireless telemetry system and a wireless telemetry method thereof; and the invention is characterized in that the wireless telemetry system comprises a wireless transmitting part and a wireless receiving part. The wireless telemetry method comprises the following steps: the wireless transmitting part is arranged on the detected shaft; the wireless transmitting part comprises at least a vibration sensor group which is composed of a longitudinal vibration sensor, a horizontal vibration sensor and a torsional vibration sensor; each vibration sensor receives the vibration signal on the detected shaft and transmits the signal to the wireless receiving part through a transmitting module, after the vibration signal goes through pre-processing, analog-to-digital conversion and encoding; a receiving module receives the signal transmitted from the wireless transmitting part; through signal decoding, signal conditioning and signal processing analysis, the signal after analytical processing is displayed on a display screen and stored in a data memory; or the signal after analytical processing is uploaded to the control center through a communication module. The invention can be used within any rotating speed range, with the system testing accuracy reaching +-0.5%. The invention has the advantages of wireless telemetry, long-term monitoring, wide frequency response range and strong anti-interference ability.
Description
Technical field
The present invention relates to a kind of multicenter shafting vibrating wireless remote-measuring system and wireless telemetering method thereof that is used for propulsion system.
Background technology
The propulsion system shafting vibration is a key property of boat diesel engine and propulsion system thereof.If can not control effectively, can the safe operation of propulsion system be worked the mischief, even cause the inefficacy of propulsion system shafting vibration.Shafting vibration is effectively measured the characteristic that can allow the user understand shafting vibration, thereby shafting vibration is controlled.
It is transverse vibration that shafting vibration mainly is divided into torsional vibration of shafting, shafting longitudinal vibration and axle, and these several vibrations can produce mutual coupling in the middle of the actual motion of axle system, makes the test of shafting vibration and analyzes complicated more.Because the Modern Ships propulsion system is complicated and diversified, be that the special environment condition shafting vibration down that measuring technology can't be suitable for is measured for conventional axle, there is not solution preferably at present yet.
At present shafting vibration for example measures that the marine shafting vibration measurement method mainly is that the main vibration mode of shafting vibration distinguish independent measurement and analysis, and the user analyzes according to the result of this measurement the situation of shafting vibration is done a comprehensive judgement then.Therefore exist the complicated and artificial analysis of deterministic process may have the shortcoming of error.
In addition, the mode that existing shafting vibration is measured is to install and measure element on measured axis substantially, be wired to the analytical instrument main frame, though can reach the purpose of measurement, but because the connection of lead, bring constantly to carrying out long-term shafting vibration measurement, even may produce disturb measuring-signal.
Summary of the invention
The present invention is a kind of multicenter shafting vibrating wireless remote-measuring system and the wireless telemetering method thereof that is mainly used in the online wireless telemetering of propulsion system shafting vibration that provides for the above-mentioned shortcoming that overcomes the prior art existence, this multicenter shafting vibrating wireless remote-measuring system and method can be by the situations of wireless mode comprehensive monitoring measured axis vibration, carry out analyzing and processing again, obtain torsional vibration of shafting in real time, shafting longitudinal vibration and axle are the various parameters of transverse vibration, and it is comprehensive to have the Measurement and analysis data, in time, accurately implement conveniently with installing, antijamming capability is strong, can be used for special shaft is advantages such as vibration-testing occasion.
For achieving the above object, the technical scheme that the present invention takes is: the multicenter shafting vibrating wireless remote-measuring system, comprise measured axle, and be characterized in, comprise wireless transmit part and wireless receiving part;
Described wireless transmit partly is arranged on the measured axis, comprising: be arranged at least one group of vibration transducer group of being made up of an extensional vibration sensor, a transverse vibration sensor and a torsional vibration pick-up on the measured axis; The signal that each sensor that is used for being received is exported carries out pre-process and analog-to-digital collecting sensor signal processing module, and the input end of described collecting sensor signal processing module is electrically connected with the output terminal of each sensor; Be used for the signal of collecting sensor signal processing module output is carried out the encoded signals coding module, described signal encoding module input is electrically connected with the output terminal of collecting sensor signal processing module; Be used for the signal of signal encoding module output is transmitted into the transmitter module of receiving-member, the input end of described transmitter module is electrically connected with the output terminal of signal encoding module;
Described wireless reception partly comprises: the receiver module that is used to receive the signal of radiating portion emission; The signal decoding module that the signal that is received is decoded; The signal condition module that described decoded signal is nursed one's health; The data acquisition module that the signal of signal condition module output is gathered; Be used for the signal of being gathered is carried out the data processing module of Treatment Analysis; Be used to export and show the data outputting module and the display screen of data after data processing module is handled; And, with the data upload of data outputting module output communication module to control center.
Above-mentioned multicenter shafting vibrating wireless remote-measuring system, wherein, described data processing module comprises: data input cell, reference signal output unit, comparing unit, data storage cell, time-domain waveform analysis unit, spectral analysis unit, data output unit; Described data input cell receives the signal that data acquisition module is gathered, and the reference signal of exporting with the reference signal output unit outputs to comparing unit jointly; After comparing data, described comparing unit obtains extensional vibration, transverse vibration and the twisting vibration data of measured axis; These data are delivered to the time-domain waveform analysis unit and are carried out time-domain waveform analysis, produce time domain waveform and deliver to the display screen demonstration; The output signal of described time-domain waveform analysis unit also is transferred to spectral analysis unit, through Fourier transform, obtains measured parameter, outputs to display screen by data outputting module and shows, or output to communication module, carries out exchanges data with user or control center; Described data storage cell is preserved the data of time-domain waveform analysis unit and spectral analysis unit output.
Above-mentioned multicenter shafting vibrating wireless remote-measuring system, wherein, described vibration transducer is made of the ICP vibration transducer of constant current source excitation.
Above-mentioned multicenter shafting vibrating wireless remote-measuring system, wherein, described Wireless transmission mode is pcm encoder and decoding process.
Above-mentioned multicenter shafting vibrating wireless remote-measuring system, wherein, the power supply mode of described wireless transmitter module is power supply power supply mode or wireless induction power supply mode.
Above-mentioned multicenter shafting vibrating wireless remote-measuring system, wherein, the mode of described wireless induction power supply is: at receiving unit the one wireless induction transmitter that is connected with power supply is set, described radiating portion is provided with a radio source receiver; Described wireless induction transmitter comprises a power supply transmitter module and the wireless induction emitting head that is electrically connected with the output terminal of this power supply transmitter module; Described radio source receiver comprises the radio source receiving coil, and the electromotive force of this radio source receiving coil induction is as the power supply that each components and parts work of radiating portion is provided.
Above-mentioned multicenter shafting vibrating wireless remote-measuring system, wherein, described radio source receiver also comprises a radio source receiver module and a rechargeable battery; Electromotive force conduct after voltage stabilizing of described radio source receiver module reception radio source receiving coil induction provides the power supply of each components and parts work of radiating portion;
Perhaps, the electromotive force that described radio source receiver module receives the induction of radio source receiving coil charges to rechargeable battery after voltage stabilizing is handled, and the power supply of each components and parts work of radiating portion is provided by rechargeable battery.
Above-mentioned multicenter shafting vibrating wireless remote-measuring system wherein, also comprises a Multi Channel Controller, is connected with the input end of wireless receiving partial data acquisition module, is used to select acquired signal to deliver to data processing module and carries out data processing; Described Multi Channel Controller is made of selector switch or capture card with multi-way switch amount IO channel.
Multicenter shafting vibrating wireless telemetering method is characterized in, may further comprise the steps:
A, the wireless transmit part that vibration signal is installed on measured axis:
A-1, at least one group of vibration transducer group of being made up of an extensional vibration sensor, a transverse vibration sensor and a torsional vibration pick-up is installed on measured axis; Each vibration transducer obtains extensional vibration signal, transverse vibration signal and the torsion vibration signal on the measured axis respectively;
A-2, each extensional vibration signal, transverse vibration signal and torsion vibration signal output to the collecting sensor signal processing module, output to the signal encoding module after pre-process and analog to digital conversion;
After a-3, signal encoding module are encoded the signal that is received, arrive the wireless receiving part through transmission antennas transmit by transmitter module;
B, wireless receiving part:
B-1, receiver module receive the signal that wireless transmit is partly sent by receiving antenna;
B-2, signal decoding module are decoded to the signal that receiver module received;
B-3, signal condition module are carried out signal condition to the signal of described signal decoding module decoding;
B-4, data collecting module collected or the signal that control selects collection to be received through Multi Channel Controller carry out Treatment Analysis by data processing module to the signal of being gathered;
B-5, the signal after the step b-4 analyzing and processing is being shown on the display screen and storing on data-carrier store; Or be transferred to control center by communication module.
Above-mentioned multicenter shafting vibrating wireless telemetering method, wherein, step b-4 is described to carry out Treatment Analysis by data processing module to the signal of being gathered and comprises the steps:
B-4-1, receive signal that data acquisition module gathers or the signal of being gathered by Multi Channel Controller selective reception data acquisition module, output to comparing unit jointly with the reference signal of reference signal output unit output by data input cell;
After comparing data, b-4-2, described comparing unit obtain extensional vibration, transverse vibration and the twisting vibration data of measured axis;
B-4-3, these data are delivered to the time-domain waveform analysis unit and are carried out time-domain waveform analysis, produce time domain waveform and deliver to the display screen demonstration;
The output signal of b-4-4, described time-domain waveform analysis unit also is transferred to spectral analysis unit, through Fourier transform, obtain measured parameter, output to display screen by data outputting module and show, or output to communication module, carry out exchanges data with user or control center;
B-4-5, preserve the data of time-domain waveform analysis unit and spectral analysis unit output by data storage cell.
Because the present invention has adopted above technical scheme, the technique effect of its generation is tangible:
1, utilize wireless telemetry technique that shafting vibration is carried out wireless telemetering and analysis, shafting vibration situation that can the on-line real time monitoring propulsion system obtains the real time data of vibration.
2, total system is utilized the technology of wireless telemetering, makes to measure accurately, and antijamming capability is strong, measures more convenient.
3, having changed prior art needs the present situation of item-dividing test to shafting vibration, and the measurement of shafting vibration is integrated, and has realized the composite measurement of extensional vibration, transverse vibration and the twisting vibration of axle system in same system.The monitoring personnel can in time make judgement by this system to the operation of propulsion system.
4, the power supply of total system also can be powered by the mode of wireless induction to radiating portion except that power supply or powered battery, to realize the long-time on-line monitoring of propulsion system shafting vibration.
Description of drawings
Be further to understand feature of the present invention, performance and advantage, the present invention is further illustrated below in conjunction with embodiments of the invention and accompanying drawing.
Fig. 1 is the structural principle synoptic diagram of a kind of embodiment of shafting vibration wireless remote-measuring system of the present invention.
Fig. 2 is the electrical block diagram of the another kind of embodiment of shafting vibration wireless remote-measuring system of the present invention.
Fig. 3 is the electrical block diagram of the data processing module of shafting vibration wireless remote-measuring system of the present invention.
Fig. 4 is the electrical block diagram of the wireless induction power supply mode of shafting vibration wireless remote-measuring system of the present invention.
Fig. 5 is the synoptic diagram of shafting vibration wireless telemetering method of the present invention.
Embodiment
See also Fig. 1, Fig. 2.Wherein Fig. 1 is the structural principle synoptic diagram of a kind of embodiment of shafting vibration wireless remote-measuring system of the present invention.Fig. 2 is the electrical block diagram of the another kind of embodiment of shafting vibration wireless remote-measuring system of the present invention.Multicenter shafting vibrating wireless remote-measuring system of the present invention comprises wireless transmit part 1 and wireless receiving part 2.Wherein: described wireless transmit part 1 is arranged on the measured axis, comprising: be arranged at least one group of vibration transducer group on the measured axis 100, provided n group vibration transducer group 10-1 to 10-n in the embodiment in figure 1; In the embodiment of Fig. 2, provided one group of vibration transducer group 10.As shown in Figure 2, each vibration transducer group 10 is made up of an extensional vibration sensor 11, a transverse vibration sensor 12 and a torsional vibration pick-up 13.Wireless transmit part 1 also comprises: the signal that is used for each sensor output that will be received carry out pre-process and analog-to-digital collecting sensor signal processing module 14 (if the sensor itself that adopts be with analog-digital conversion function need not the collecting sensor signal processing module); Be used for the signal of collecting sensor signal processing module output is carried out encoded signals coding module 15; Be used for the signal of signal encoding module output is transmitted into the transmitter module 16 of receiving-member, this transmitter module 16 comprises emitting antenna 161.The input end of described collecting sensor signal processing module is electrically connected with the output terminal of each sensor; Described signal encoding module input is electrically connected with the output terminal of collecting sensor signal processing module; The input end of described transmitter module is electrically connected with the output terminal of signal encoding module.Vibration transducer described in the present embodiment adopts the ICP vibration transducer of constant current source excitation.
Described wireless reception part 2 comprises: be used to receive the receiver module 21 of the signal of radiating portion 1 emission, this receiver module comprises receiving antenna 211; The signal decoding module 22 that the signal that is received is decoded; The signal condition module 23 that described decoded signal is nursed one's health; The data acquisition module 24 that the signal of signal condition module output is gathered; Be used for the signal of being gathered is carried out the data processing module 25 of Treatment Analysis; Be used to export data outputting module 26, the display screen 27 of the data after handling with the video data processing module; And the communication module 28 that upload the data to control center.Signal analysis among Fig. 1 embodiment, data output and demonstration are finished by industrial computer or notebook computer 200.
After inputing to the signal encoding module by each sensor outputting multiplex signals,, go out by the transmitter module wireless transmit through pcm encoder.The receiver module of receiving unit receives this signal, the signal decoding module is carried out demodulation to this signal and behind signal condition, gathered by data acquisition module (for example high-speed data card), carry out analyzing and processing by data processing module at last, obtain the test parameter of shafting vibration signal.
See also Fig. 3, this is the electrical block diagram of the data processing module of shafting vibration wireless remote-measuring system of the present invention.Multicenter shafting vibrating wireless remote-measuring system of the present invention wherein, described data processing module 25 comprises: data input cell 251, reference signal output unit 252, comparing unit 253, data storage cell 254, time-domain waveform analysis unit 255, spectral analysis unit 256, data output unit 257; Described data input cell receives the signal that data acquisition module is gathered, and the reference signal of exporting with the reference signal output unit outputs to comparing unit jointly; After comparing data, described comparing unit obtains extensional vibration, transverse vibration, the twisting vibration data of measured axis; These data are delivered to the time-domain waveform analysis unit and are carried out time-domain waveform analysis, produce time domain waveform and deliver to the display screen demonstration; The output signal of described time-domain waveform analysis unit also is transferred to spectral analysis unit, through Fourier transform, obtains measured parameter, outputs to display screen by data outputting module and shows, or output to communication module, uploads to control center.Described data storage cell is preserved the data of time-domain waveform analysis unit and spectral analysis unit output.
In the multicenter shafting vibrating wireless remote-measuring system of the present invention, the power supply mode of described wireless transmitter module can adopt power supply power supply mode or wireless induction power supply mode.If the mode by wireless induction is powered, system can work long hours, to realize the long-time on-line monitoring of propulsion system shafting vibration.
See also Fig. 4, and cooperate referring to Fig. 1.The mode of the described wireless induction of multicenter shafting vibrating wireless remote-measuring system of the present invention power supply is: the receiving unit that is included in multicenter shafting vibrating wireless remote-measuring system of the present invention is provided with a wireless induction transmitter 4 that is connected with power supply, at the radiating portion of multicenter shafting vibrating wireless remote-measuring system of the present invention one radio source receiver 5 is set.Described wireless induction transmitter 4 comprises a power supply transmitter module 41 and the wireless induction emitting head 42 that is electrically connected with the output terminal of this power supply transmitter module; Described radio source receiver 5 comprises radio source receiving coil 51, and this radio source receiving coil also can be made of the emitting antenna 161 of radiating portion.The electromotive force of this radio source receiving coil induction is as the power supply that each components and parts work of radiating portion of multicenter shafting vibrating wireless remote-measuring system of the present invention is provided.Radio source receiver 5 can also comprise a radio source receiver module 52 and rechargeable battery 53; Described radio source receiver module receives the electromotive force of radio source receiving coil induction, and conduct provides the power supply of each components and parts work of radiating portion after voltage stabilizing is handled; Perhaps, the electromotive force of radio source receiving coil induction to the rechargeable battery charging, is provided the power supply of each components and parts work of radiating portion by rechargeable battery after voltage stabilizing is handled.
Please cooperate and consult Fig. 2.In the multicenter shafting vibrating wireless remote-measuring system of the present invention, also comprise a Multi Channel Controller 6, be connected the input end of data acquisition module, be used to select acquired signal to deliver to data processing module and carry out data processing; Described Multi Channel Controller is made of selector switch or capture card with multi-way switch amount IO channel.
See also Fig. 5.Multicenter shafting vibrating wireless telemetering method of the present invention may further comprise the steps:
101, be the wireless transmit part of vibration signal in installation shaft on the measured axis: be included at least one group of vibration transducer group of forming by an extensional vibration sensor, a transverse vibration sensor and a torsional vibration pick-up of installing on the measured axis; Each vibration transducer obtains extensional vibration signal, transverse vibration signal and the torsion vibration signal on the measured axis respectively; Each extensional vibration signal, transverse vibration signal and torsion vibration signal output to the collecting sensor signal processing module, output to the signal encoding module after pre-process and analog to digital conversion; After the signal that the signal encoding module is exported the collecting sensor signal processing module that is received is encoded, be compiled into digital signal, be transmitted into the wireless receiving part through antenna by transmitter module.This Wireless transmission mode is a pcm encoder, utilizes digital data transmission, its precision height, and be not easy to be subjected to various interference, and the ultimate range of wireless transmit can reach 250 meters, and systematic error ± 0.2% satisfies the needs that engineering is used.
102, the receiver module of wireless receiving part receives the signal that wireless transmit is partly sent;
103, by the signal decoding module signal that is received is carried out the PCM decoding; By the signal condition module described decoded signal is carried out signal condition, so that after-treatment device writes down or utilize other devices as demonstrations such as oscillographs;
104, signal to the data processing module of data collecting module collected signal condition module output carries out the post analysis processing.The data acquisition module of present embodiment can adopt high-speed data acquisition card, and its high sampling rate can reach 500k/s.Data processing module can be made of industrial computer or notebook.
105, data acquisition module or select to gather signal to the data processing module that is received by Multi Channel Controller and carry out post analysis and handle.Described Multi Channel Controller is made of selector switch or capture card with multi-way switch amount IO channel.
106, data processing module carries out signal Processing to the multiple signals that collect, and obtains time domain waveform 107, is showing on the display screen 108-1 and is storing on data-carrier store 108-2; Obtain various measured parameters after this time domain waveform and the process frequency analysis 109, storing on the data-carrier store 108-2 and on display screen 108-1, showing, or be transferred to control center by communication module 110.
Describedly by data processing module the signal of being gathered is carried out Treatment Analysis and comprise the steps:
106-1, receive signal that data acquisition module gathers or the signal of being gathered by Multi Channel Controller selective reception data acquisition module, output to comparing unit jointly with the reference signal of reference signal output unit output by data input cell;
After comparing data, 106-2, described comparing unit obtain extensional vibration, transverse vibration, the twisting vibration data of measured axis;
106-3, these data are delivered to the time-domain waveform analysis unit and are carried out time-domain waveform analysis, produce time domain waveform and deliver to the display screen demonstration;
The output signal of 106-4, described time-domain waveform analysis unit also is transferred to spectral analysis unit and carries out spectrum analysis.Because the sequential of any continuous coverage or signal, can be expressed as the unlimited stack of the sine wave signal of different frequency, therefore the present invention's original signal of adopting the fourier transform method utilization directly to measure, obtain the parameters such as frequency, amplitude and phase place of measured signal with accumulate mode, outputing to display screen by data outputting module again shows, or output to communication module, carry out exchanges data with control center.
106-5, preserve the data of time-domain waveform analysis unit and spectral analysis unit output by data storage cell;
Shafting vibration measuring system of the present invention and wireless telemetering method thereof can be applicable in any range of speeds, bag Draw together the extremely low axle system of rotating speed, the system testing precision is ± 0.5%. Monitoring when system has wireless telemetering, length, The characteristics such as Hz-KHz is wide, antijamming capability is strong. Can be used for to carry out axle system for all kinds of power set The occasion of vibration measurement. If in conjunction with the survey data of tach signal, also can carry out the analysis that order is followed the tracks of. Tool There are the Measurement and analysis data comprehensively, in time, accurately and implement easily advantage.
Claims (10)
1. the multicenter shafting vibrating wireless remote-measuring system comprises measured axle, it is characterized in that, comprises wireless transmit part and wireless receiving part;
Described wireless transmit partly is arranged on the measured axis, comprising:
Be arranged at least one group of vibration transducer group of forming by an extensional vibration sensor, a transverse vibration sensor and a torsional vibration pick-up on the measured axis;
The signal that each sensor that is used for being received is exported carries out pre-process and analog-to-digital collecting sensor signal processing module; The input end of described collecting sensor signal processing module is electrically connected with the output terminal of each sensor;
Be used for the signal of collecting sensor signal processing module output is carried out the encoded signals coding module; Described signal encoding module input is electrically connected with the output terminal of collecting sensor signal processing module;
Be used for the signal of signal encoding module output is transmitted into the transmitter module of receiving-member; The input end of described transmitter module is electrically connected with the output terminal of signal encoding module;
Described wireless reception partly comprises:
Be used to receive the receiver module of the signal of radiating portion emission;
The signal decoding module that the signal that is received is decoded;
The signal condition module that described decoded signal is nursed one's health;
The data acquisition module that the signal of signal condition module output is gathered;
Be used for the signal of being gathered is carried out the data processing module of Treatment Analysis;
Be used to export and show the data outputting module and the display screen of data after data processing module is handled;
And,
The data upload of data outputting module output is arrived the communication module of control center.
2. multicenter shafting vibrating wireless remote-measuring system according to claim 1, it is characterized in that described data processing module comprises: data input cell, reference signal output unit, comparing unit, data storage cell, time-domain waveform analysis unit, spectral analysis unit, data output unit; Described data input cell receives the signal that data acquisition module is gathered, and the reference signal of exporting with the reference signal output unit outputs to comparing unit jointly; After comparing data, described comparing unit obtains extensional vibration, transverse vibration, the twisting vibration data of measured axis; These data are delivered to the time-domain waveform analysis unit and are carried out time-domain waveform analysis, produce time domain waveform and deliver to the display screen demonstration; The output signal of described time-domain waveform analysis unit also is transferred to spectral analysis unit, through Fourier transform, obtains measured parameter, outputs to display screen by data outputting module and shows, or output to communication module, carries out exchanges data with user or control center; Described data storage cell is preserved the data of time-domain waveform analysis unit and spectral analysis unit output.
3. multicenter shafting vibrating wireless remote-measuring system according to claim 1 is characterized in that, described vibration transducer is made of the ICP vibration transducer of constant current source excitation.
4. multicenter shafting vibrating wireless remote-measuring system according to claim 1 is characterized in that, described Wireless transmission mode is pcm encoder and decoding process.
5. multicenter shafting vibrating wireless remote-measuring system according to claim 1 is characterized in that, the power supply mode of described wireless transmitter module is power supply power supply mode or wireless induction power supply mode.
6. multicenter shafting vibrating wireless remote-measuring system according to claim 5, it is characterized in that, the mode of described wireless induction power supply is: at described receiving unit the one wireless induction transmitter that is connected with power supply is set, at described radiating portion one radio source receiver is set; Described wireless induction transmitter comprises a power supply transmitter module and the wireless induction emitting head that is electrically connected with the output terminal of this power supply transmitter module; Described radio source receiver comprises the radio source receiving coil, and the electromotive force of this radio source receiving coil induction is as the power supply that each components and parts work of radiating portion is provided.
7. multicenter shafting vibrating wireless remote-measuring system according to claim 6 is characterized in that, described radio source receiver also comprises a radio source receiver module and a rechargeable battery; Electromotive force conduct after voltage stabilizing of described radio source receiver module reception radio source receiving coil induction provides the power supply of each components and parts work of radiating portion; Perhaps, the electromotive force that described radio source receiver module receives the induction of radio source receiving coil charges to rechargeable battery after voltage stabilizing is handled, and the power supply of each components and parts work of radiating portion is provided by the rechargeable battery conduct.
8. multicenter shafting vibrating wireless remote-measuring system according to claim 1, it is characterized in that, also comprise a Multi Channel Controller, be connected, be used to select acquired signal to deliver to data processing module and carry out data processing with the input end of wireless receiving partial data acquisition module; Described Multi Channel Controller is made of selector switch or capture card with multi-way switch amount IO channel.
9. multicenter shafting vibrating wireless telemetering method is characterized in that, may further comprise the steps:
A, the wireless transmit part that vibration signal is installed on measured axis:
A-1, at least one group of vibration transducer group of being made up of an extensional vibration sensor, a transverse vibration sensor and a torsional vibration pick-up is installed on measured axis; Each vibration transducer obtains extensional vibration signal, transverse vibration signal and the torsion vibration signal on the measured axis respectively;
A-2, each extensional vibration signal, transverse vibration signal and torsion vibration signal output to the collecting sensor signal processing module, output to the signal encoding module after pre-process and analog to digital conversion;
After a-3, signal encoding module are encoded the signal that is received, arrive the wireless receiving part through transmission antennas transmit by transmitter module;
B, wireless receiving part:
B-1, receiver module receive the signal that wireless transmit is partly sent by receiving antenna;
B-2, signal decoding module are decoded to the signal that receiver module received;
B-3, signal condition module are carried out signal condition to the signal of described signal decoding module decoding;
B-4, data collecting module collected or the signal that control selects collection to be received through Multi Channel Controller carry out Treatment Analysis by data processing module to the signal of being gathered;
B-5, the signal after the step b-4 analyzing and processing is being shown on the display screen and storing on data-carrier store; Or be transferred to control center by communication module.
10. multicenter shafting vibrating wireless telemetering method according to claim 9 is characterized in that, step b-4 is described to carry out Treatment Analysis by data processing module to the signal of being gathered and comprise the steps:
B-4-1, receive signal that data acquisition module gathers or the signal of being gathered by Multi Channel Controller selective reception data acquisition module, output to comparing unit jointly with the reference signal of reference signal output unit output by data input cell;
B-4-2, described comparing unit compare extensional vibration, transverse vibration and the twisting vibration data that obtain measured axis after the judgement to data;
B-4-3, these data are delivered to the time-domain waveform analysis unit and are carried out time-domain waveform analysis, produce time domain waveform and deliver to the display screen demonstration;
The output signal of b-4-4, described time-domain waveform analysis unit also is transferred to spectral analysis unit, through Fourier transform, obtain measured parameter, output to display screen by data outputting module and show, or output to communication module, carry out exchanges data with user or control center;
B-4-5, preserve the data of time-domain waveform analysis unit and spectral analysis unit output by data storage cell.
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| CN201269775Y (en) * | 2008-10-13 | 2009-07-08 | 中国船舶重工集团公司第七一一研究所 | Wireless remote-measuring system for multi-channel axis set vibration |
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