CN210269202U - Rotating part health monitoring system based on SAW resonance and locomotive - Google Patents
Rotating part health monitoring system based on SAW resonance and locomotive Download PDFInfo
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- CN210269202U CN210269202U CN201921003760.2U CN201921003760U CN210269202U CN 210269202 U CN210269202 U CN 210269202U CN 201921003760 U CN201921003760 U CN 201921003760U CN 210269202 U CN210269202 U CN 210269202U
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Abstract
Rotating part health monitoring system and locomotive based on SAW resonance, including the wireless passive sensor based on SAW resonance, signal transceiver module and controller, the wireless passive sensor based on SAW resonance sets up on rotating part, signal transceiver module sets up on the fixed part, signal transceiver module and the wireless passive sensor electromagnetic coupling based on SAW resonance, signal transceiver module is used for launching the excitation signal to the wireless passive sensor based on SAW resonance, and receive the feedback signal that contains frequency information that the wireless passive sensor based on SAW resonance feedbacks, and with this feedback signal transmission to controller, the controller reachs the real-time resonant frequency of the wireless passive sensor based on SAW resonance according to this feedback signal, obtain the working parameter of rotating part according to the real-time resonant frequency of wireless passive sensor. The health monitoring system based on SAW resonance can easily monitor the health condition of the rotating component.
Description
Technical Field
The utility model belongs to the technical field of rotary part monitoring and specifically relates to a rotary part health monitoring system and locomotive based on SAW resonance.
Background
The rotating member is a member commonly used in a mechanical device, for example, a rotating shaft of a motor, a rotating shaft of a wheel, a rotating shaft of a gear, a rotatable blade, etc., and in order to operate more stably, it is necessary to obtain feedback of a health state (for example, surface stress, temperature, acceleration) of the rotating member to a control member.
Under the large background of the change of the maintenance mode of mainly preventing periodic maintenance of the vehicle to mainly maintaining the vehicle in a state, the method breaks through the health state detection, monitoring and online fault diagnosis technology of key parts of the high-speed locomotive, is an important way for improving the safety guarantee capability of the high-speed locomotive, is key content of the design and research of the maintenance process of the state maintenance of the high-speed locomotive, and is also the technical trend of the intellectualization and continuous development of the high-speed locomotive.
The locomotive fault characteristic identification is mainly realized on the basis of monitoring and analyzing the temperature, the acceleration, the strain and the like of a key rotating component at present. The measurement of these three physical quantities is now performed by wired sensors, and there are two specific ways:
(1) directly measuring the high-speed rotating component: the sensor and the corresponding matching circuit are connected in a wired mode and are all installed on the high-speed rotating part, and then energy supply and signal communication are achieved through wireless transmission. The scheme puts forward higher requirements on the size, performance, signal transmission stability and reliability of the whole circuit, improves the difficulty of equipment design and manufacture, and increases the workload of installation and later maintenance.
(2) And mounting the sensing device on a static component connected with the target component, and realizing fault feature identification of the key target component by measuring relevant parameters of the static component. The monitoring scheme is limited by the position of the sensor, and the fault of the moving part is difficult to accurately identify.
The scheme can increase the difficulty of monitoring the wheel shaft of the locomotive, or influence the accuracy of data acquisition and influence the safety of locomotive traffic. How to monitor the working state of a rotating part of a locomotive to judge the working state of the rotating part of the locomotive becomes a difficult problem in the industry.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a rotating part health monitoring system and locomotive based on SAW resonance, this locomotive health monitoring system based on SAW resonance can monitor the health status of locomotive rotating part comparatively easily.
The utility model provides a rotary part health monitoring system based on SAW resonance, including wireless passive sensor based on SAW resonance, signal transceiver module and controller, wireless passive sensor based on SAW resonance sets up on rotary part and is used for producing the resonant frequency signal relevant with rotary part's operating parameter, signal transceiver module sets up on the fixed part, signal transceiver module and the wireless passive sensor based on SAW resonance electromagnetic coupling, signal transceiver module is used for to the wireless passive sensor based on SAW resonance transmission excitation signal to and receive the feedback signal that contains frequency information that the wireless passive sensor based on SAW resonance feedbacks, and send this feedback signal to the controller, the controller reachs the real-time resonant frequency of wireless passive sensor based on SAW resonance according to this feedback signal, and working parameters of the rotating component are obtained according to the real-time resonance frequency of the wireless passive sensor.
Further, the signal transceiver module includes a first transceiver antenna, a signal conditioning circuit, an MCU, an a/D converter, and a data interface, where the first transceiver antenna is configured to transmit an excitation signal to the wireless passive sensor based on SAW resonance and receive a feedback signal containing frequency information fed back by the wireless passive sensor based on SAW resonance, the signal conditioning circuit performs filtering conditioning on the received feedback signal containing frequency information, and the a/D converter performs analog-to-digital conversion on the feedback signal containing frequency information and then sends the analog-to-digital converted signal to the controller through the data interface under the control of the MCU.
Further, the wireless passive sensor based on SAW resonance comprises a SAW resonance sensor body and a protective layer, wherein the protective layer is made of a flexible material and is coated outside the SAW resonance sensor body.
Further, the wireless passive sensor based on SAW resonance is arranged in a cylindrical or sheet shape.
Further, the wireless passive sensor based on SAW resonance comprises one or more of a SAW resonance temperature sensor, a SAW resonance strain sensor and a SAW resonance acceleration sensor.
Further, the wireless passive sensor based on the SAW resonance comprises the SAW resonance temperature sensor and/or the SAW resonance strain sensor, the SAW resonance temperature sensor and the SAW resonance strain sensor respectively comprise a first substrate, a first interdigital transducer, a first reflection grating and a second transceiving antenna, the first interdigital transducer and the first reflection grating are arranged on the first substrate, and the second transceiving antenna is connected with the first interdigital transducer.
Further, the wireless passive sensor based on the SAW resonance comprises the SAW resonance acceleration sensor, the SAW resonance acceleration sensor comprises a supporting seat, a second base body, a second interdigital transducer, a second reflection grating, a third transceiving antenna and a mass block, the supporting seat is arranged on the rotating component, one end of the second base body is fixed on the supporting seat, the other end of the second base body is arranged in a suspension mode, the mass block is arranged on the suspension end of the second base body, the second interdigital transducer and the second reflection grating are formed on the second base body, and the third transceiving antenna is connected with the second interdigital transducer.
Further, the resonant frequency of the SAW resonant temperature sensor is set to change in a first frequency interval, the resonant frequency of the SAW resonant strain sensor is set to change in a second frequency interval, the resonant frequency of the SAW resonant acceleration sensor is set to change in a third frequency interval, and the first frequency interval, the second frequency interval and the third frequency interval do not intersect.
Further, rotating part health monitoring system based on SAW resonance still includes fixed box body, fixed box body is fixed in the carriage bottom, signal conditioning circuit the MCU the AD converter reaches data interface set up in the fixed box body.
The utility model also provides a locomotive, including foretell rotary part health monitoring system based on SAW resonance.
To sum up, in the utility model discloses in, through setting up signal transceiver module on the fixed part, wireless passive sensor based on SAW resonance sets up on rotary part, when carrying out rotary part working parameter monitoring, signal transceiver module is used for transmitting excitation signal to wireless passive sensor based on SAW resonance, and receive the repayment signal that contains frequency information based on the wireless passive sensor feedback of SAW resonance, because the resonant frequency of the wireless passive sensor based on SAW resonance can change along with rotary part's working parameter's change, consequently, through analyzing the signal that contains frequency information received, can learn the resonant frequency of the wireless passive sensor based on SAW resonance, then reach rotary part's working parameter. Therefore, the health detection system can only be provided with the wireless passive sensor based on magnetostriction on the rotating part, and can know the working parameters of the rotating part in the movement process without adding any part, so that the health detection system is simple and convenient to install, low in cost and accurate in detection result.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a system block diagram of a SAW resonance-based rotating component health monitoring system according to a first embodiment of the present invention.
FIG. 2 is a schematic diagram of the SAW resonance-based rotating component health monitoring system of FIG. 1 mounted on a rotating component.
Fig. 3 is a schematic structural diagram of the wireless passive sensor based on SAW resonance in fig. 1.
Fig. 4 is a schematic structural diagram of the SAW resonant temperature sensor and the SAW resonant strain sensor in fig. 1.
Fig. 5 is a schematic structural diagram of the SAW resonant acceleration sensor in fig. 1.
Fig. 6 is a schematic structural diagram of a wireless passive sensor based on SAW resonance according to a second embodiment of the present invention.
Fig. 7 is a schematic structural diagram illustrating that the SAW resonance-based health monitoring system for a rotating component of a locomotive according to a third embodiment of the present invention is installed on the rotating component.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the invention, the following detailed description is given with reference to the accompanying drawings and preferred embodiments.
The utility model provides a rotary part health monitoring system and locomotive based on SAW (surface-acoustic-wave) resonance, this health monitoring system based on SAW resonance can monitor the health status of rotating part comparatively easily.
Fig. 1 is a system block diagram of a rotating component health monitoring system based on SAW resonance according to a first embodiment of the present invention, and fig. 2 is a schematic structural diagram of the rotating component health monitoring system based on SAW resonance in fig. 1, which is installed on a rotating component. As shown in fig. 1 and 2, the health monitoring system for a rotating component based on SAW resonance according to the present invention comprises a wireless passive sensor 10 based on SAW resonance, a signal transceiver module 20 and a controller 30, wherein the resonant frequency of the wireless passive sensor 10 based on SAW resonance changes with the change of the operating parameter of the rotating component, the wireless passive sensor 10 based on SAW resonance is disposed on a rotating component, such as a rotating shaft 421 of a device such as a locomotive or a lathe (in the description of the drawings of the present invention, the detection system is mounted on the locomotive as an example) for generating a resonant frequency signal related to the operating parameter of the rotating component, the signal transceiver module 20 is disposed on a fixed portion, and when the rotating component is the rotating shaft of the device such as the locomotive, the lathe or the like, the signal transceiver module 20 is disposed on a fixed portion (not shown) such as a bottom 411 of a carriage, a gear box 412, the signal transceiver module 20 is electromagnetically coupled to the wireless passive sensor 10 based on SAW resonance, the signal transceiver module 20 is configured to transmit an excitation signal to the wireless passive sensor 10 based on SAW resonance, receive a feedback signal containing frequency information related to working parameters of a rotating component, which is fed back by the wireless passive sensor 10 based on SAW resonance, and transmit the feedback signal to the controller 30, and the controller 30 obtains a real-time resonance frequency of the wireless passive sensor 10 based on SAW resonance according to the feedback signal, and then obtains the working parameters of the rotating component, where the working parameters include wheel-rail force, wheel polygonal wear, rail wear, gear failure, and the like, and can be obtained by testing information of surface stress, temperature, acceleration, and the like of the rotating component. The health condition of the rotating part can be accurately judged through the working parameters of the rotating part.
In the present embodiment, the signal transceiver module 20 is disposed on the fixed portion, the wireless passive sensor 10 based on SAW resonance is disposed on the rotating member, when monitoring the operating parameters of the rotating member, the signal transceiver module 20 is used for transmitting the excitation signal to the wireless passive sensor 10 based on SAW resonance, the wireless passive sensor 10 based on SAW resonance generates the electromagnetic signal with a certain frequency through the piezoelectric effect and the inverse piezoelectric effect, the signal transceiver module 20 receives the feedback signal containing the frequency information fed back by the wireless passive sensor 10 based on SAW resonance, since the frequency of the electromagnetic signal returned by the wireless passive sensor 10 based on SAW resonance changes with the operating parameters of the rotating member, the resonant frequency of the wireless passive sensor 10 based on SAW resonance can be known by analyzing the received detection signal containing the frequency information, and then working parameters of the rotating part are obtained. Therefore, the health detection system can only be provided with the wireless passive sensor based on magnetostriction on the rotating part, and can know the working parameters of the rotating part in the movement process without adding any part, so that the health detection system is simple and convenient to install, low in cost and accurate in detection result.
Referring to fig. 1, in the present embodiment, the signal transceiver module 20 includes a first transceiver antenna 21, a signal conditioning circuit 22, an MCU (micro control unit) 23, an a/D converter 24 and a data interface 25, where the first transceiver antenna 21 is configured to transmit an excitation signal to the wireless passive sensor 10 based on SAW resonance and receive a feedback signal containing frequency information fed back by the wireless passive sensor 10 based on SAW resonance, the signal conditioning circuit 22 is configured to perform filtering conditioning on the received feedback signal, the a/D converter 24 performs analog-to-digital conversion on the feedback signal, and then sends the analog-to-digital converted signal to the communication unit 31 of the controller 30 through the data interface 25 under the control of the MCU23, and the controller 30 determines a real-time resonant frequency of the sensor according to the feedback signal containing frequency information received by the communication unit 31, to derive operating parameters of the rotating component. In the present embodiment, each component of the signal transceiver module 20 is disposed in a fixed box 26, and the fixed box 26 is disposed on the bottom 411 of the compartment.
Fig. 3 is a schematic structural diagram of the wireless passive sensor based on SAW resonance in fig. 1, and as shown in fig. 3, the wireless passive sensor 10 based on SAW resonance includes a SAW resonance sensor body 11 and a protective layer 12, the protective layer 12 is made of a flexible material and covers the SAW resonance sensor body 11, and through the arrangement of the protective layer 12, the protective layer plays a role in packaging protection, prevents the SAW resonance sensor body 11 from being damaged due to bending, enables the wireless passive sensor 10 based on SAW resonance to be flexible, and can be wound around the outer circumference of the rotating component along the circumferential direction of the rotating component. In the present embodiment, the wireless passive sensor based on the SAW resonance is in a sheet shape.
In the present embodiment, the wireless passive sensor based on SAW resonance may be one or more of a SAW resonant temperature sensor 13, a SAW resonant strain sensor 14, and a SAW resonant acceleration sensor 15.
Fig. 4 is a schematic structural diagram of the SAW resonant temperature sensor and the SAW resonant strain sensor in fig. 1, as shown in fig. 4, when the wireless passive sensor 10 based on SAW resonance is the SAW resonant temperature sensor 13, the SAW resonant temperature sensor 13 includes a first substrate 131, a first interdigital transducer 132, a first reflection grating 133, and a second transceiver antenna 134, the first interdigital transducer 132 and the first reflection grating 133 are disposed on the first substrate 131, the second transceiver antenna 134 is connected to the first interdigital transducer 132, the second transceiver antenna 134 receives the excitation signal and introduces the excitation signal into the first interdigital transducer 132, an alternating electric field is generated on the surface of the first substrate 131 below the first interdigital transducer 132 and in a space near the surface, and the alternating electric field generates a corresponding elastic strain on the surface of the first substrate 131 through an inverse piezoelectric effect, thereby exciting a surface acoustic wave. The surface acoustic waves propagate along the surface of the first substrate 131 to both sides, are reflected and superposed by the first reflection gratings 133 on both sides, and are output through the first interdigital transducer 132 and the transmitting and receiving antenna.
Since the propagation characteristics of the acoustic waves on the first substrate 131 are different at different temperatures, when the temperature on the first substrate 131 changes, the frequency of the electromagnetic signal returned by the SAW resonant temperature sensor 13 also changes, and the controller can monitor the temperature according to the feedback signal containing the frequency information received by the signal transceiver module.
When the wireless passive sensor 10 based on SAW resonance is the SAW resonance strain sensor 14, the structure thereof is substantially the same as that of the SAW resonance temperature sensor 13, please refer to the above-mentioned SAW resonance temperature sensor 13, after the first substrate 131 is deformed, the compressed area wave velocity is accelerated, the resonance frequency is increased, and the stretched area wave velocity is decreased, and the resonance frequency is decreased. Thus, by sensing the frequency, the degree of strain can be monitored.
Fig. 5 is a schematic structural diagram of the SAW resonant acceleration sensor 15 in fig. 1, and as shown in fig. 5, when the wireless passive sensor 10 based on SAW resonance is the SAW resonant acceleration sensor 15, the SAW resonant acceleration sensor 15 includes a support base 151, a second substrate 152, a second interdigital transducer 153, a second reflection grating 154, a third transceiving antenna 155 and a mass block 156. The supporting base 151 is disposed on the rotating component, one end of the second substrate 152 is fixed on the supporting base 151, the other end is disposed in a suspended manner, the mass block 156 is disposed on the suspended end of the second substrate 152, that is, the end away from the supporting base 151, the second interdigital transducer 153 and the second reflection grating 154 are formed on the second substrate 152, and the third transceiver antenna 155 is connected to the second interdigital transducer 153.
Because one end of the second base 152 is fixed on the supporting seat 151, the other end is suspended, and the mass block 156 is arranged at the suspended end, when acceleration is applied to the SAW resonant acceleration sensor 15, the mass block 156 can drive the second base 152 to deform and bend under the action of the acceleration, and the deformation and bending of the second base 152 can cause the change of the frequency of the electromagnetic signal returned by the SAW resonant acceleration sensor 15, that is, according to the correlation between the frequency information and the acceleration, the acceleration can be monitored by sensing the resonant frequency.
When two or more different sensors exist in the three sensors at the same time, in order to prevent mutual interference between signals of the sensors, in this embodiment, the resonant frequency of the SAW resonant temperature sensor 13 changes in the first frequency interval, the resonant frequency of the SAW resonant strain sensor 14 changes in the second frequency interval, the resonant frequency of the SAW resonant acceleration sensor 15 changes in the third frequency interval, and the first frequency interval, the second frequency interval, and the third frequency interval do not intersect with each other. Thus, after the controller judges the resonant frequency of the sensor, according to the interval where the resonant frequency is located, the controller further judges which sensor the resonant frequency corresponds to and the health condition of the rotating component represented by the frequency.
Fig. 6 is a schematic structural diagram of a wireless passive sensor based on SAW resonance in a second embodiment of the present invention, as shown in fig. 6, in the second embodiment of the present invention, the wireless passive sensor based on SAW resonance can be cylindrical and is sleeved outside the rotating component.
Fig. 7 is a schematic diagram illustrating a structural diagram of a rotating component health monitoring system installed on a rotating component based on SAW resonance in a third embodiment of the present invention, as shown in fig. 6, the rotating component health monitoring system 10 based on SAW resonance provided in the third embodiment of the present invention is substantially the same as the first embodiment, except that, in this embodiment, the first transceiving antenna 21 of the signal transceiving module 20 is disposed on the gear box to reduce the distance between the wireless passive sensor 10 based on SAW resonance, and the signal conditioning circuit 22, the MCU23, the a/D converter 24 and the data interface 25 are disposed in the fixed box 26, when the rotating component is a rotating shaft of the locomotive, the fixed box 26 can be disposed on the gear box 412 and also disposed on the bottom 411 of the carriage.
It should be noted that, in the above embodiments, the case where the health monitoring system based on the SAW resonance rotating member is applied to the locomotive is described, but not limited thereto. It is understood that the health monitoring system can also be applied to rotating parts such as machine tools, rollers and the like, and detects the health monitoring system of the rotating parts.
In summary, in the utility model discloses in, through setting up signal transceiver module 20 on the fixed part, wireless passive sensor 10 based on SAW resonance sets up on rotary part, when carrying out rotary part operating parameter monitoring, signal transceiver module 20 is used for transmitting excitation signal to wireless passive sensor 10 based on SAW resonance, and receive the repayment signal that contains frequency information based on the wireless passive sensor 10 feedback of SAW resonance, because the resonant frequency of wireless passive sensor 10 based on SAW resonance can change along with rotary part's operating parameter's change, consequently, through analyzing the repayment signal that contains frequency information received, can learn the resonant frequency of wireless passive sensor 10 based on SAW resonance, then obtain rotary part's operating parameter. Therefore, the health detection system can only be provided with the SAW resonance-based wireless passive sensor on the rotating part, and can know the working parameters of the rotating part during movement without adding any part, so that the health detection system is simple and convenient to install, low in cost and accurate in detection result.
The utility model particularly provides a locomotive, this locomotive includes the utility model provides a based on the health monitoring system of SAW resonance's locomotive rotary part, about other technical characteristics of this locomotive, please see prior art, no longer give consideration to here.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent changes without departing from the technical scope of the present invention.
Claims (10)
1. A rotating component health monitoring system based on SAW resonance is characterized in that: comprises a wireless passive sensor based on SAW resonance, a signal transceiving module and a controller, wherein the wireless passive sensor based on SAW resonance is arranged on a rotating component and is used for generating a resonant frequency signal related to an operating parameter of the rotating component, the signal transceiver module is arranged on the fixed part and is electromagnetically coupled with the SAW resonance-based wireless passive sensor, the signal transceiver module is used for transmitting an excitation signal to the SAW resonance-based wireless passive sensor, and receiving a feedback signal containing frequency information fed back by the SAW resonance-based wireless passive sensor, and transmits the feedback signal to the controller, the controller obtains the real-time resonance frequency of the wireless passive sensor based on SAW resonance according to the feedback signal, and working parameters of the rotating component are obtained according to the real-time resonance frequency of the wireless passive sensor.
2. A SAW resonance-based rotating component health monitoring system as claimed in claim 1, wherein: the signal transceiving module comprises a first transceiving antenna, a signal conditioning circuit, an MCU, an A/D converter and a data interface, wherein the first transceiving antenna is used for transmitting an excitation signal to the wireless passive sensor based on SAW resonance and receiving a feedback signal containing frequency information fed back by the wireless passive sensor based on SAW resonance, the signal conditioning circuit carries out filtering conditioning on the received feedback signal containing the frequency information, the A/D converter carries out analog-to-digital conversion on the feedback signal containing the frequency information, and then the signal after the analog-to-digital conversion is sent to the controller through the data interface under the control of the MCU.
3. A SAW resonance-based rotating component health monitoring system as claimed in claim 1, wherein: the wireless passive sensor based on the SAW resonance comprises an SAW resonance sensor body and a protective layer, wherein the protective layer is made of a flexible material and covers the SAW resonance sensor body.
4. A SAW resonance-based rotating component health monitoring system as claimed in claim 3, wherein: the wireless passive sensor based on SAW resonance is arranged in a cylindrical or sheet shape.
5. A SAW resonance-based rotating component health monitoring system as claimed in claim 1, wherein: the wireless passive sensor based on SAW resonance comprises one or more of a SAW resonance temperature sensor, a SAW resonance strain sensor and a SAW resonance acceleration sensor.
6. A SAW resonance-based rotating component health monitoring system as claimed in claim 5, wherein: the wireless passive sensor based on SAW resonance comprises the SAW resonance temperature sensor and/or the SAW resonance strain sensor, the SAW resonance temperature sensor and the SAW resonance strain sensor respectively comprise a first substrate, a first interdigital transducer, a first reflection grating and a second transceiving antenna, the first interdigital transducer and the first reflection grating are arranged on the first substrate, and the second transceiving antenna is connected with the first interdigital transducer.
7. A SAW resonance-based rotating component health monitoring system as claimed in claim 5, wherein: the wireless passive sensor based on SAW resonance comprises the SAW resonance acceleration sensor, the SAW resonance acceleration sensor comprises a supporting seat, a second base body, a second interdigital transducer, a second reflection grating, a third transceiving antenna and a mass block, the supporting seat is arranged on the rotating component, one end of the second base body is fixed on the supporting seat, the other end of the second base body is arranged in a suspension mode, the mass block is arranged on the suspension end of the second base body, the second interdigital transducer and the second reflection grating are formed on the second base body, and the third transceiving antenna is connected with the second interdigital transducer.
8. A SAW resonance-based rotating component health monitoring system as claimed in claim 6, wherein: the resonant frequency of the SAW resonant temperature sensor is set to change in a first frequency interval, the resonant frequency of the SAW resonant strain sensor is set to change in a second frequency interval, the resonant frequency of the SAW resonant acceleration sensor is set to change in a third frequency interval, and the first frequency interval, the second frequency interval and the third frequency interval do not intersect.
9. A SAW resonance-based rotating component health monitoring system as claimed in claim 2, wherein: rotating part health monitoring system based on SAW resonance still includes fixed box body, fixed box body is fixed in on the fixed part, signal conditioning circuit MCU the AD converter reaches data interface set up in the fixed box body.
10. A locomotive, characterized by: a SAW resonance based rotating component health monitoring system comprising any one of claims 1 to 9.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112051566A (en) * | 2020-08-28 | 2020-12-08 | 浙江大学 | Moving part parameter measuring method based on SAW wireless passive sensing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112051566A (en) * | 2020-08-28 | 2020-12-08 | 浙江大学 | Moving part parameter measuring method based on SAW wireless passive sensing system |
| CN112051566B (en) * | 2020-08-28 | 2023-01-10 | 浙江大学 | Moving part parameter measuring method based on SAW wireless passive sensing system |
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