CN214951780U - Vibration noise data acquisition system - Google Patents
Vibration noise data acquisition system Download PDFInfo
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- CN214951780U CN214951780U CN202120399252.1U CN202120399252U CN214951780U CN 214951780 U CN214951780 U CN 214951780U CN 202120399252 U CN202120399252 U CN 202120399252U CN 214951780 U CN214951780 U CN 214951780U
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Abstract
The utility model provides a vibration noise data acquisition system sets up the vibration detection module that is used for surveying vibration analog signal for the noise detection module of surveying noise analog signal, be used for converting vibration analog signal into vibration digital signal, and convert noise analog signal into noise digital signal's analog to digital converter, be used for reading vibration digital signal and noise digital signal's main control chip, be used for uploading vibration digital signal and noise digital signal's net gape chip. Therefore, the utility model discloses can realize gathering vibration and noise data in step, adopt two independent equipment to gather vibration and noise data respectively in avoiding traditional scheme and lead to gathering the higher problem of cost, realize the function with lower cost synchronous acquisition vibration and noise data.
Description
Technical Field
The utility model relates to a data acquisition technical field especially relates to a vibration noise data acquisition system.
Background
With the rapid development of health models and predictive maintenance fields of equipment, vibration data and noise data play a key role in fault early warning and diagnosis of mechanical equipment such as power systems and hydraulic systems, and therefore the vibration data and the noise data need to be collected. When vibration and noise data are used simultaneously, the current mainstream acquisition scheme is generally vibration and sound independent acquisition.
At present, vibration data are collected based on a vibration collection system, and the vibration data collection scheme is as follows: the vibration probe transmits a vibration signal to the IEPE constant current source through the coaxial cable, the vibration signal is transmitted to the collector after being isolated, filtered and amplified by the IEPE constant current source, and the collector transmits a plurality of paths of signals to the upper computer through the USB or the network interface. The noise data is collected based on an analog quantity collection interface of a noise collection system. Therefore, the vibration and noise data acquisition respectively adopts two sets of independent systems for acquisition, and the cost is higher.
SUMMERY OF THE UTILITY MODEL
The utility model provides a vibration noise data acquisition system for solve the defect that data acquisition is with high costs among the prior art.
The utility model provides a vibration noise data acquisition system, include:
the vibration detection module is used for detecting a vibration analog signal;
the noise detection module is used for detecting a noise analog signal;
the analog-to-digital converter is respectively electrically connected with the vibration detection module and the noise detection module and is used for converting the vibration analog signal into a vibration digital signal and converting the noise analog signal into a noise digital signal;
the master control chip is electrically connected with the analog-to-digital converter and is used for reading the vibration digital signal and the noise digital signal;
and the network port chip is electrically connected with the main control chip and is used for uploading the vibration data and the noise data read by the main control chip.
According to the utility model provides a pair of vibration noise data acquisition system, the vibration detection module includes vibration sensor and supply circuit, vibration sensor is used for surveying vibration analog signal, supply circuit is used for doing vibration sensor provides the power.
According to the utility model provides a pair of vibration noise data acquisition system still includes: a first filter; the vibration detection module and the analog-to-digital converter are electrically connected through the first filter.
According to the utility model provides a pair of vibration noise data acquisition system, the noise detection module includes noise sensor, noise sensor is used for surveying noise analog signal.
According to the utility model provides a pair of vibration noise data acquisition system still includes: a second filter; the noise detection module and the analog-to-digital converter are electrically connected through the second filter.
According to the utility model provides a pair of vibration noise data acquisition system, analog to digital converter with main control chip passes through FSMC interface connection.
According to the utility model provides a pair of vibration noise data acquisition system, main control chip with the net gape chip passes through RMII interface connection.
According to the utility model provides a pair of vibration noise data acquisition system, main control chip reads through the UDP protocol vibration digital signal with noise digital signal.
According to the utility model provides a pair of vibration noise data acquisition system, analog to digital converter is multichannel synchronous ADC conversion chip, the main control chip is any kind in STM32F1, STM32F4 and STM 32H.
According to the utility model provides a pair of vibration noise data acquisition system, the net gape chip is DP 83848.
The utility model provides a vibration noise data acquisition system sets up the vibration detection module that is used for surveying vibration analog signal for survey noise analog signal's noise detection module, be used for converting vibration analog signal into vibration digital signal, and convert noise analog signal into noise digital signal's analog to digital converter, be used for reading vibration digital signal and noise digital signal's main control chip, be used for uploading vibration digital signal and noise digital signal's net gape chip. Therefore, the utility model discloses can realize gathering vibration and noise data in step, adopt two independent equipment to gather vibration and noise data respectively in avoiding traditional scheme and lead to gathering the higher problem of cost, realize the function with lower cost synchronous acquisition vibration and noise data.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following briefly introduces the drawings required for the embodiments or the prior art descriptions, and obviously, the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a vibration noise data acquisition system provided by the present invention;
reference numerals:
100: a vibration noise data acquisition system; 110: a vibration detection module; 120: a noise detection module;
130: an analog-to-digital converter; 140: a main control chip; 150: a network port chip;
160: a first filter; 170: a second filter; 180: a connector;
111: a vibration sensor; 111: a vibration sensor; 112: a power supply circuit;
121: a noise sensor.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
At present, vibration data are collected based on a vibration collection system, and the vibration data collection scheme is as follows: the vibration probe transmits a vibration signal to the IEPE constant current source through the coaxial cable, the vibration signal is transmitted to the collector after being isolated, filtered and amplified by the IEPE constant current source, and the collector transmits a plurality of paths of signals to the upper computer through the USB or the network interface. The noise data is collected based on an analog quantity collection interface of a noise collection system. However, the vibration and noise data acquisition interfaces are incompatible, two sets of independent devices are required for acquisition, and the data acquisition cost is high.
To this end, the utility model provides a vibration noise data acquisition system. Fig. 1 is a schematic structural diagram of a vibration noise data acquisition system, as shown in fig. 1, the vibration noise data acquisition system 100 includes a vibration detection module 110, a noise detection module 120, an analog-to-digital converter 130, a main control chip 140, and a network interface chip 150.
The vibration detection module 110 is configured to detect a vibration analog signal through a probe or a vibration sensor; the noise detection module 120 is used for detecting a noise analog signal through a probe or a noise sensor; the analog-to-digital converter 130 is electrically connected to the vibration detection module 110 and the noise detection module 120, and the analog-to-digital converter 130 may be a multi-channel synchronous ADC chip, so as to convert a vibration analog signal into a vibration digital signal and convert a noise analog signal into a noise digital signal in a multi-channel synchronous manner, thereby avoiding a problem that synchronous acquisition of vibration and noise data cannot be realized due to incompatibility of a vibration data acquisition interface and a noise data acquisition interface in a conventional scheme.
In addition, the vibration data and the noise data detected by the vibration detection module 110 and the noise detection module 120 are analog signals, and in order to achieve data interface compatibility, the analog signals need to be converted into digital signals by the analog-to-digital converter 130. Where an analog signal refers to a physical quantity that is continuous in time or value. The digital signal is discontinuous and reflects the value of the electrical quantity (e.g. current, voltage).
In addition, the vibration noise data acquisition system 100 further includes a main control chip 140, and the main control chip 140 is electrically connected to the analog-to-digital converter 130 and is configured to read the vibration digital signal and the noise digital signal acquired by the analog-to-digital converter 130. The main control chip 140 is further electrically connected to the network interface chip 150, and is configured to upload the vibration digital signal and the noise digital signal read by the main control chip 140. The existing vibration data acquisition system comprises the following acquisition processes: the vibration probe passes to IEPE/ICP constant current source signal conditioner with vibration signal through coaxial cable, and through IEPE/ICP constant current source signal conditioner separate straight, filter amplify the back and deliver for ADC data collection station, ADC data collection station passes through USB or the net gape with the multichannel signal and passes to the host computer, the embodiment of the utility model provides a vibration noise data acquisition system framework is simple, and the device is with low costs, and than current FPGA scheme, the cost can reduce more than 80%.
Therefore, the embodiment of the utility model provides a vibration noise data acquisition system, based on the analog-to-digital converter synchronous acquisition vibration of multichannel and noise data, adopt two independent equipment to gather vibration and noise data respectively in avoiding traditional scheme and lead to gathering the higher problem of cost, realize the function with lower cost synchronous acquisition vibration and noise data.
Based on the above embodiment, as shown in fig. 1, the vibration detection module 110 includes a vibration sensor 111 and a power supply circuit 112, the vibration sensor 111 is used for detecting a vibration analog signal, and the power supply circuit 112 is used for supplying power to the vibration sensor 111.
In addition, the vibration sensor 111 may be an IEPE sensor, and the power supply circuit 112 may be a piezoelectric integrated circuit IEPE, in which a sensitive electronic device is integrated as close as possible to the sensor to ensure better noise immunity and easier packaging, so that vibration data can be sensitively detected. The power supply circuit 112 supplies power to the vibration sensor 111.
Based on any of the above embodiments, as shown in fig. 1, the vibration noise data collection system 100 further includes: a first filter 160; the vibration detection module 110 and the analog-to-digital converter 130 are electrically connected through a first filter 160. The first filter 160 may be a first order low pass filter that passes lower frequency data with little or no attenuation, but passes higher frequency data with greater attenuation. In other words, the first-order low-pass filter is suitable for passing low frequencies and having a large blocking effect on high frequencies, and can be used for filtering high-frequency noise in vibration data.
Based on any of the above embodiments, as shown in fig. 1, the noise detection module 120 includes a noise sensor 121, and the noise sensor 121 is used for detecting a noise analog signal. The noise sensor 121 detects a sound-sensitive electret condenser microphone to obtain noise data, and specifically, the sound wave vibrates an electret film in the microphone to cause a change in capacitance, so as to generate a small voltage which changes correspondingly, thereby converting an optical signal into an electrical signal. The noise sensor 121 may be any one of a piezoelectric ceramic sensor, a capacitive sensor, and a magnetoelectric sensor.
Based on any of the above embodiments, the vibration noise data collection system 100 further includes: a second filter 170, wherein the noise detection module 120 and the analog-to-digital converter 130 are electrically connected through the second filter 170. The second filter 170 may be a first order low pass filter that passes lower frequency data with little or no attenuation, but passes higher frequency data with greater attenuation. In other words, the first-order low-pass filter is suitable for passing low frequencies and having a large blocking effect on high frequencies, and can be used for filtering high-frequency noise in vibration data.
Based on any of the above embodiments, the adc 130 and the main control chip 140 are connected via the FSMC interface.
Specifically, the FSMC is a bridge connecting the main control chip 140 and the analog-to-digital converter 130, and when data is written into a corresponding address, software is not needed to simulate the read-write timing sequence of an external memory chip, but only a timing sequence register related to the FSMC needs to be configured, and after the relevant register is configured, the data can be written into the address in the corresponding memory block. In addition, because the FSMC is used for externally connecting various memory chips, compared with the conventional scheme that the GPIO port is used for directly driving the liquid crystal, the data communication speed is faster than that of the general GPIO port, so that when the analog-to-digital converter 130 acquires vibration data and noise data, the vibration data and the noise data can be transmitted to the main control chip 140 at a higher speed, thereby improving the data acquisition efficiency.
Based on any of the above embodiments, the main control chip 140 is connected to the network interface chip 150 through the RMII interface.
In particular, RMII is commonly referred to as a "simplified media independent interface," another implementation in the IEEE-802.3u standard, in addition to the MII interface. RMII reduces the number of pins required for ethernet communications, according to the IEEE802.3 standard, the MII interface requires 16 data and control signal pins, while RMII reduces the number of pins to 7, by half compared to MII, so the switch can access ports that have twice as many data. Meanwhile, the RMII uses data transceiving with a width of 2 bits, so that after the master control chip 140 reads the vibration data and the noise data collected by the analog-to-digital converter 130, data uploading can be performed at a higher speed through the RMII interface. The network interface chip 150 may be a network PHY chip.
Based on any of the above embodiments, the main control chip 140 reads the vibration digital signal and the noise digital signal through the UDP protocol.
Specifically, a User Datagram Protocol (UDP) is a connectionless transport layer Protocol in an OSI (Open System Interconnection) reference model, and UDP has better real-time performance and higher working efficiency than a TCP Protocol, and has a simpler UDP segment structure than a TCP segment structure, so that network overhead is also small. Because UDP does not belong to a connection type protocol, the UDP has the advantages of low resource consumption and high processing speed, is oriented to distributed controllers, monitors and the like in the field of field measurement and control, and has severe application environment, thereby putting different requirements on data to be transmitted, such as real-time performance, anti-interference performance, safety and the like. Based on this, in field communication, if an application wants to transmit a group of data to another node in the network, the UDP process may transmit the data to the IP process after adding a header to the data, and the UDP protocol omits the process of establishing and removing a connection, cancels a retransmission check mechanism, and can achieve a higher communication rate, thereby transmitting the vibration data and the noise data collected by the analog-to-digital converter 130 to the main control chip 140 in real time. It should be noted that, the embodiment of the present invention may use the LWIP to process the UDP protocol data, and upload the collected vibration data and noise data through the UDP.
Based on any of the above embodiments, the analog-to-digital converter 130 is a multi-channel synchronous ADC conversion chip, and the main control chip 140 is any one of STM32F1, STM32F4, and STM 32H.
Specifically, the ADC 130 may select an ADI multi-channel synchronous ADC conversion chip, such as AD7/8/9, AD7606, etc., to achieve multi-channel synchronous acquisition of the vibration digital signal and the noise digital signal. For example, the analog-to-digital converter 130 is an 8-channel ADC chip, and may acquire the vibration digital signal by using 6 channels and acquire the noise digital signal by using 2 channels, so as to realize synchronous acquisition of the vibration digital signal and the noise digital signal. The MCU of the main control chip can select any one of STM32F1 series, STM32F4 series or STM32H series of the intentional semiconductor, such as STM32F407, the cost of the chips is low, the development investment cost is low, the working time of developers is saved, and the efficiency is improved.
Based on any of the above embodiments, the portal chip 150 is DP 83848. The DP83848 is an ethernet control chip, which is an 10/100Mbit/s single-channel physical layer ethernet transceiver device, supports 10/100M ethernet communication, and simultaneously supports MII and RMI interface modes, and has high integration level, full function, low power consumption, and other performances.
It should be noted that the network port chip 150 may also be connected to the connector 180 (such as RJ45) through a network cable, so as to upload the vibration digital signal and the noise digital signal collected by the main control chip 140.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A vibration noise data acquisition system, comprising:
the vibration detection module is used for detecting a vibration analog signal;
the noise detection module is used for detecting a noise analog signal;
the analog-to-digital converter is respectively electrically connected with the vibration detection module and the noise detection module and is used for converting the vibration analog signal into a vibration digital signal and converting the noise analog signal into a noise digital signal;
the master control chip is electrically connected with the analog-to-digital converter and is used for reading the vibration digital signal and the noise digital signal;
and the network port chip is electrically connected with the main control chip and is used for uploading the vibration digital signal and the noise digital signal.
2. The vibratory noise data collection system of claim 1, wherein the vibration detection module comprises a vibration sensor for detecting the vibration analog signal and a power supply circuit for providing power to the vibration sensor.
3. The vibratory noise data collection system of claim 1, further comprising: a first filter; the vibration detection module and the analog-to-digital converter are electrically connected through the first filter.
4. The vibration noise data collection system of claim 1, wherein the noise detection module comprises a noise sensor for detecting the noise analog signal.
5. The vibratory noise data collection system of claim 1, further comprising: a second filter; the noise detection module and the analog-to-digital converter are electrically connected through the second filter.
6. The vibration noise data collection system of claim 1, wherein the analog-to-digital converter is connected to the master control chip via an FSMC interface.
7. The system of claim 1, wherein the master chip is connected to the network port chip via an RMII interface.
8. The vibratory noise data collection system of claim 1, wherein the master chip reads the vibratory digital signal and the noise digital signal via a UDP protocol.
9. The vibration noise data acquisition system according to claim 1, wherein the analog-to-digital converter is a multi-channel synchronous ADC conversion chip, and the master chip is any one of STM32F1, STM32F4, and STM 32H.
10. The vibratory noise data collection system of claim 1, wherein the portal chip is DP 83848.
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| CN202120399252.1U CN214951780U (en) | 2021-02-22 | 2021-02-22 | Vibration noise data acquisition system |
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| CN202120399252.1U CN214951780U (en) | 2021-02-22 | 2021-02-22 | Vibration noise data acquisition system |
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Effective date of registration: 20230111 Address after: 314506 room 116, building 4, No. 288, development avenue, Tongxiang Economic Development Zone, Tongxiang City, Jiaxing City, Zhejiang Province Patentee after: Shengjing Intelligent Technology (Jiaxing) Co.,Ltd. Address before: 102206 5th floor, building 6, 8 Beiqing Road, Changping District, Beijing Patentee before: SANY HEAVY INDUSTRY Co.,Ltd. |
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