CN205002878U - Wireless vibration sensor - Google Patents

Wireless vibration sensor Download PDF

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Publication number
CN205002878U
CN205002878U CN201520729312.6U CN201520729312U CN205002878U CN 205002878 U CN205002878 U CN 205002878U CN 201520729312 U CN201520729312 U CN 201520729312U CN 205002878 U CN205002878 U CN 205002878U
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CN
China
Prior art keywords
unit
signal
wireless
vibration
sensor
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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CN201520729312.6U
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Chinese (zh)
Inventor
于刚
周羽佳
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Shenzhen Graduate School Harbin Institute of Technology
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Shenzhen Graduate School Harbin Institute of Technology
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Priority to CN201520729312.6U priority Critical patent/CN205002878U/en
Application granted granted Critical
Publication of CN205002878U publication Critical patent/CN205002878U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a wireless vibration sensor, install vibration measuring device on slewing device, along with slewing device rotates, the vibration condition with A certain amount of time interval monitoring slewing device, through DSP ( digital signal processor ), handle (including time domain analysis and frequency domain analysis ) to the signal, draw the characteristic value of signal, compare with the normal characteristic value of given, reach equipment running state's conclusion, accomplish the diagnosis to the equipment state in the sensor, transmit the equipment state to host computer afterwards, reach the monitoring effect to equipment. Owing to more press close to the fault source, the sensor is apart from the trouble and the vibration signal source that produces is nearer, and the vibration signal that detects is stronger, it is less to receive other vibrations signal interference, comes the trouble vibration signal with other signal separation more easily at signal processing's in -process, and the signal processing of being convenient for goes on, has improved fault -signal's resolution ratio for signal analysis can accomplish in the sensor.

Description

A kind of wireless vibration sensor
Technical field
The utility model relates to a kind of sensor, particularly relates to a kind of intelligent radio vibration transducer.
Background technology
Wireless vibration sensor is applied very wide in the state-detection and fault diagnosis field of equipment, utilize vibration transducer detect particular device vibration signal, utilize subsequent conditioning circuit to signal carry out filtering, A the process such as D conversion, via control chip and wireless radio transmission chip, signal is spread out of in host computer, in host computer, utilize time-domain analysis, frequency-domain analysis or Time-Frequency Analysis by the feature information extraction in vibration signal out, complete the diagnostic work to equipment.
Along with more and more higher to the demand of production equipment condition monitoring, there is the requirement a certain unit status of production equipment being carried out to precision, continuation monitoring, the parts such as rotated, or moveable parts.And in most cases, the volume of these parts is all less, if utilize the wired vibration measurement device of hand-held, the installation requirement of sensor can be met, but utilizing sensor signal output line and power lead in handheld apparatus measuring process, winding can occur causes danger to cause measuring, and the measurement of timing too labor intensive again.The most volume of existing wireless senser is excessive, cannot meet the requirement being arranged on and rotating or on moveable parts.
Existing sensor is analyzed in Signal transmissions to host computer mostly, cannot accomplish directly to carry out in the sensor analyzing the vibration signal collected.
Along with the development of MEMS technology and electronic technology, sensor, signal processing circuit and control circuit etc. can be made to obtain miniaturization, high performance, intellectuality by existing technology.
The utility model patent being CN103231630A as publication No. discloses a kind of utility model creation being called " Micro Intelligent Sensor ", and this sensor comprises housing, circuit board and the battery with the stacked setting of circuit board.The volume of wireless senser can be effectively reduced.
Existing wireless vibration sensor possesses the function of above-described measurement, signal wireless transmission mostly.But existing wireless vibration sensor is because volume is excessive or sacrifice performance in order to small size.The JM5843 radio acceleration test macro that such as brilliant bright science and technology is produced, volume is less than normal, and be 60 (length) * 46 (wide) * 38 (height), Measurement bandwidth is 0-500HZ.But still meet be arranged on movable equipment, high bandwidth high-frequency measure requirement.Lack a kind of small size, high-performance, intellectuality now, can be arranged on rotatable equipment under air-proof condition the wireless senser that sports equipment is measured.
In order to reduce the volume of wireless senser, need the volume reducing each components and parts.By to components and parts performance, the choosing of volume, reasonably design circuit, connecting up and installing DSP etc. additional to realize the miniaturization of wireless vibration sensor, high performance, intellectuality.
By specific algorithm, the vibration signal data collected are processed, by completing the diagnosis to equipment state to the analysis of signal characteristic value, directly can export the state of tested device to host computer.
The vibration measuring equipment of existing high bandwidth, high measurement scope is the mode that sensor, signal wire and checkout equipment combine mostly, the requirement of long-distance transmissions, wireless, small size cannot be met, and existing measuring equipment all gives host computer the function of signal analysis, cannot accomplish that in wireless senser, directly carry out analysis to signal reaches a conclusion.
Utility model content
The utility model detects cannot press close to the deficiency of the source of trouble to overcome prior art, provides that a kind of volume is little, high frequency high bandwidth can be arranged on slewing, can the wireless vibration sensor of complete independently monitoring.
A kind of wireless vibration sensor, comprise housing and be arranged on the Power Management Unit in housing, DSP data acquisition unit, wireless transmission unit, two unit IC plate, antenna, two unit IC plate comprises MEMS acceleration transducer and signal processing unit, each unit adopts stacked placement, two unit IC plate is arranged near measuring body surface one deck, DSP data acquisition unit is arranged at two unit IC plate last layer, wireless transmission unit is arranged at third layer, stretch out antenna to outside housing, Power Management Unit is arranged at the one deck farthest away from measuring body surface, described signal processing unit, DSP data acquisition unit, wireless transmission unit is all connected with Power Management Unit.
As further improvement of the utility model, described housing adopts screw to connect or the mode of magnetic-disc is connected with testee; Or recycle after the web member corresponding with testee radian is installed in bottom and to be bondingly connected with testee.
As further improvement of the utility model, described signal processing unit comprises operational amplification circuit and 16 AD conversion chip, the electric signal that MEMS acceleration transducer produces carries out amplifying by described signal processing unit, filtering, is converted into digital signal exports via 16 AD conversion chip; Described DSP data acquisition unit comprises a digital signal processing chip and interlock circuit, calculate mean value, mean square value, peak value, flexure, the kurtosis of digital signal, or FFT conversion is carried out to digital signal, extract eigenwert, compare with normal eigenwert, the running status of judgment device, issues wireless transmission unit by the running status of equipment subsequently, or directly by the vibration digital data transmission that collects to wireless transmission unit; Described wireless transmission unit exports the digital signal wireless transport module of equipment running status or vibration to host computer.
As further improvement of the utility model, described MEMS acceleration transducer adopts ADXL001
As further improvement of the utility model, described signal processing unit adopts AD8606 operational amplifier and AD7916 analog to digital conversion ADC.
As further improvement of the utility model, described DSP data acquisition unit adopts TMS320F2812.
As further improvement of the utility model, described wireless transmission unit adopts ZigBee transmission technology, or Wifi transmission technology.
The beneficial effects of the utility model are:
Volume is little: the MEMS acceleration transducer adopting small size, utilizes stacked placement to be arranged in device by circuit, effectively reduce device volume.This device can not in the process of wheel measuring with other device generation interference hits.
Noise is low: the process chip selecting low-power consumption, adopts and designing power supply management circuit, keeps holding state when device does not work.
Quantity easily extensible: because this device volume is little, can distribute to be placed on multiple slewing and measure, be configured to a wireless sensor network, more the running status of the checkout equipment of system.
Intelligent: directly can to carry out analyzing and processing to the vibration signal collected at sensor internal, draw the state conclusion of equipment under test, once find that fault can be reported to the police immediately, save analysis time in host computer.
Accompanying drawing explanation
Fig. 1 is the utility model wireless vibration sensor instance schematic diagram;
Fig. 2 is the utility model wireless vibration sensor construction schematic diagram.
In figure, each component names is as follows:
Wireless sensor device 100, web member 200, axle 300, cap 101, Power Management Unit 102, DSP data acquisition unit 103, body 104, wireless transmission unit 105, two unit IC plate 106, antenna 107.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
The utility model design is a has small size, high-performance, can be bonded on sports equipment rotate thereupon, the wireless vibration pick-up unit of good stability, and the utility model can carry out treatment and analyses at sensor internal to the vibration signal collected, and completes the status monitoring to equipment or fault detect.
As shown in Figure 1, to be connected with web member 200 with being threaded bottom described novel sensor, the mode that web member sticks with glue contacts with axle 300 forming surface.
As shown in Figure 2, a kind of minitype high-performance wireless vibration sensor, described novel small size wireless vibration sensing device comprises a MEMS acceleration transducer, Power Management Unit 102, signal processing unit, DSP data acquisition unit 103, wireless transmission unit 105 and housing.
The described each unit of minitype high-performance wireless vibration sensor internal adopts stacked placement, the two unit IC plate 106 of MEMS acceleration transducer, signal processing unit is positioned near measuring body surface one deck, DSP data acquisition unit 103 is installed on two unit IC last layer, wireless transmission unit 105 is installed on third layer, stretch out antenna to outside housing, Power Management Unit 102 is installed on the one deck farthest away from measuring body surface.Can open in the top of device, be convenient to the charging of battery and each replacement of element.Adopt between each laminate boards and be screwed.Profit can effectively reduce in this way (reduction contact area here refers to the contact area utilizing stacked laying method can reduce sensor and measurement mechanism) sensor and the contact area measuring object, although body height increases to some extent, but due to each circuit board thinner thickness, circuit board is stacked can not produce too much influence to the height of whole device, can reach the requirement being positioned over and measuring body surface.(MEMS: MEMS (micro electro mechanical system)).
Housing can adopt screw to connect or the mode of magnetic-disc is connected with testee; If testee surface irregularity, bonding mode can be utilized to be connected with testee; Such as, if there is radian on testee surface, axle, can recycles after the web member corresponding with testee radian is installed in bottom and to be bondingly connected with testee.
Described signal processing unit comprises operational amplification circuit and 16 AD conversion chip.The electric signal that MEMS acceleration transducer produces carries out amplifying by described signal processing unit, filtering, is converted into digital signal exports via 16 AD conversion chip.
Described DSP data acquisition unit 103 comprises a digital signal processing chip and interlock circuit, the mean value, mean square value, peak value, flexure, kurtosis etc. of computable number word signal, or FFT conversion is carried out to digital signal, extract eigenwert, compare with normal eigenwert, the running status of judgment device, issues wireless transmission unit 105 by the running status of equipment subsequently;
Or can directly by the vibration digital data transmission that collects to wireless transmission unit 105.
Described wireless transmission unit 105 exports the digital signal wireless transport module of equipment running status or vibration to host computer.
Described signal processing unit, AD conversion unit, DSP data acquisition unit 103, wireless transmission unit 105 are all connected with Power Management Unit 102.
Described MEMS acceleration transducer adopts ADXL001.
Described signal processing unit adopts AD8606 operational amplifier and AD7916 analog to digital conversion ADC.
Described DSP data acquisition unit 103 adopts TMS320F2812.
Described wireless transmission unit 105 adopts ZigBee transmission technology, or Wifi transmission technology.
Described MEMS acceleration transducer, Power Management Unit 102, signal processing unit, DSP data acquisition unit 103 and wireless transmission unit 105 are all arranged in the housing of described device.
The vibration of testee is transferred in MEMS acceleration transducer by web member, housing.MEMS acceleration transducer is converted to electric signal acceleration signal and exports, entering signal processing unit amplifies signal, filtering, and the voltage standard signal after process is carried out AD conversion, digital signal is inputted and stores into DSP data acquisition unit 103 pairs of signals and process.Subsequently by signal with wireless transmission unit 105 antenna by Signal transmissions in host computer.Period, Power Management Unit 102 keeps the power supply to MEMS acceleration transducer, signal processing unit, DSP data acquisition unit 103, wireless transmission unit 105.
Vibration measurement device is arranged on slewing by the utility model, along with slewing rotates, monitor the Vibration Condition of slewing at a certain time interval, by DSP (digital signal processor), signal is processed (comprising time-domain analysis and frequency-domain analysis), extract the eigenwert of signal, compare with given normal eigenvalues, draw the conclusion of equipment running status, complete the diagnosis to equipment state in the sensor, subsequently equipment state is transferred to host computer, reaches the monitoring effect to equipment.Owing to more pressing close to the source of trouble, sensor distance fault and the vibroseismic signal produced is nearer, the vibration signal detected is stronger, it is less to be subject to the interference of other vibration signals, easier in the process of signal transacting fault vibration signal and other Signal separator to be come, be convenient to the carrying out of signal analysis and processing, improve the resolution of fault-signal, signal analysis can be completed in the sensor.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection domain of the present utility model.

Claims (7)

1. a wireless vibration sensor, it is characterized in that: comprise housing and be arranged on the Power Management Unit (102) in housing, DSP data acquisition unit (103), wireless transmission unit (105), two unit IC plate (106), antenna (107), two unit IC plate (106) comprises MEMS acceleration transducer and signal processing unit, each unit adopts stacked placement, two unit IC plate (106) is arranged near measuring body surface one deck, DSP data acquisition unit (103) is arranged at two unit IC plate (106) last layer, wireless transmission unit (105) is arranged at third layer, stretch out antenna to outside housing, Power Management Unit (102) is arranged at the one deck farthest away from measuring body surface, described signal processing unit, DSP data acquisition unit (103), wireless transmission unit (105) is all connected with Power Management Unit (102).
2. a kind of wireless vibration sensor according to claim 1, is characterized in that: described housing adopts screw to connect or the mode of magnetic-disc is connected with testee; Or the web member (200) corresponding with testee radian is installed in bottom recycles afterwards and to be bondingly connected with testee.
3. a kind of wireless vibration sensor according to claim 1, it is characterized in that: described signal processing unit comprises operational amplification circuit and 16 AD conversion chip, the electric signal that MEMS acceleration transducer produces carries out amplifying by described signal processing unit, filtering, is converted into digital signal exports via 16 AD conversion chip; Described DSP data acquisition unit (103) comprises a digital signal processing chip and interlock circuit, calculate mean value, mean square value, peak value, flexure, the kurtosis of digital signal, or FFT conversion is carried out to digital signal, extract eigenwert, compare with normal eigenwert, the running status of judgment device, subsequently the running status of equipment is issued wireless transmission unit (105), or directly by the vibration digital data transmission that collects to wireless transmission unit (105); Described wireless transmission unit (105) exports the digital signal wireless transport module of equipment running status or vibration to host computer.
4. a kind of wireless vibration sensor according to claim 3, is characterized in that: described MEMS acceleration transducer adopts ADXL001.
5. a kind of wireless vibration sensor according to claim 3, is characterized in that: described signal processing unit adopts AD8606 operational amplifier and AD7916 analog to digital conversion ADC.
6. a kind of wireless vibration sensor according to claim 3, is characterized in that: described DSP data acquisition unit (103) adopts TMS320F2812.
7. a kind of wireless vibration sensor according to claim 3, is characterized in that: described wireless transmission unit (105) adopts ZigBee transmission technology, or Wifi transmission technology.
CN201520729312.6U 2015-09-18 2015-09-18 Wireless vibration sensor Expired - Fee Related CN205002878U (en)

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Application Number Priority Date Filing Date Title
CN201520729312.6U CN205002878U (en) 2015-09-18 2015-09-18 Wireless vibration sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520729312.6U CN205002878U (en) 2015-09-18 2015-09-18 Wireless vibration sensor

Publications (1)

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CN205002878U true CN205002878U (en) 2016-01-27

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105628102A (en) * 2016-02-25 2016-06-01 中国石油化工股份有限公司 Wireless transmission temperature vibration transmitter of magnetic adsorption type
CN106092312A (en) * 2016-06-17 2016-11-09 北京中元瑞讯科技有限公司 Configurable output Intelligent Sensing System based on MCU and ZIGBEE
CN106563974A (en) * 2016-11-03 2017-04-19 上海大学 Intelligent device for cutting parameter detection under impact state
CN108344502A (en) * 2018-02-08 2018-07-31 常德烟草机械有限责任公司 A kind of cigarette unit vibration monitor system and method
CN109738055A (en) * 2018-12-29 2019-05-10 惠州学院 A kind of vibrating sensor and its vibration monitoring method with signal screening function
CN110191850A (en) * 2017-06-08 2019-08-30 世德科技有限责任两合公司 For detecting the radio sensor module of material container
CN110319915A (en) * 2018-03-31 2019-10-11 钰绅科技股份有限公司 Vibration and sound wave integration sensing system and method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105628102A (en) * 2016-02-25 2016-06-01 中国石油化工股份有限公司 Wireless transmission temperature vibration transmitter of magnetic adsorption type
CN106092312A (en) * 2016-06-17 2016-11-09 北京中元瑞讯科技有限公司 Configurable output Intelligent Sensing System based on MCU and ZIGBEE
CN106563974A (en) * 2016-11-03 2017-04-19 上海大学 Intelligent device for cutting parameter detection under impact state
CN110191850A (en) * 2017-06-08 2019-08-30 世德科技有限责任两合公司 For detecting the radio sensor module of material container
CN108344502A (en) * 2018-02-08 2018-07-31 常德烟草机械有限责任公司 A kind of cigarette unit vibration monitor system and method
CN110319915A (en) * 2018-03-31 2019-10-11 钰绅科技股份有限公司 Vibration and sound wave integration sensing system and method
CN109738055A (en) * 2018-12-29 2019-05-10 惠州学院 A kind of vibrating sensor and its vibration monitoring method with signal screening function

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160127

Termination date: 20160918

CF01 Termination of patent right due to non-payment of annual fee