CN205209768U - Many rotor unmanned aerial vehicle motor screw operating mode observation circuit - Google Patents
Many rotor unmanned aerial vehicle motor screw operating mode observation circuit Download PDFInfo
- Publication number
- CN205209768U CN205209768U CN201521042190.XU CN201521042190U CN205209768U CN 205209768 U CN205209768 U CN 205209768U CN 201521042190 U CN201521042190 U CN 201521042190U CN 205209768 U CN205209768 U CN 205209768U
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- dsp chip
- unmanned aerial
- adc
- many rotor
- monitoring
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model provides a many rotor unmanned aerial vehicle motor screw operating mode observation circuit, including the DSP chip, adc ADC, the AGC circuit, FLASH memory and adapter, the adapter links to each other with the input of AGC circuit, the output of AGC circuit links to each other with adc ADC's input, adc ADC's output links to each other with the input of DSP chip, the DSP chip links to each other with the FLASH memory, the DSP chip still with the screw motor on hall sensor link to each other, the DSP chip sends information through UART. The sound that this observation circuit produced based on to screw and windage the time carries out the analysis, changes through detecting this kind of sound, can judge motor bearing's the degree of wear, can early warning in advance before unmanned aerial vehicle motor screw break down, and the accessory is is in time overhauld and changed to the aviation accident that the upcropping is aroused by motor screw trouble when flight.
Description
Technical field
The utility model belongs to many rotor wing unmanned aerial vehicles controller technology field, especially relates to a kind of many rotor wing unmanned aerial vehicles motor helical oar monitoring of working condition circuit.
Background technology
Like a raging fire along with unmanned plane market, the safety problem of unmanned plane also more causes the concern of people.The main mechanical part of many rotor wing unmanned aerial vehicles is exactly motor and screw propeller, and the life-span that motor is general is 500-700 hour, and its trouble spot is mainly that motor bearings weares and teares.At present, in the use procedure of many rotor wing unmanned aerial vehicles, electrical machinery life mainly by estimating, being easy to cause motor to extend service in the army, causing potential safety hazard.Therefore, research and develop a kind of flight safety how ensureing unmanned plane, the monitoring equipment especially for the unmanned plane product safety of the long endurance of heavy－duty seems particularly important.
Summary of the invention
In view of this, the utility model is intended to propose a kind of many rotor wing unmanned aerial vehicles motor helical oar monitoring of working condition circuit, to realize the monitoring to motor helical oar.
For achieving the above object, the technical solution of the utility model is achieved in that
A kind of many rotor wing unmanned aerial vehicles motor helical oar monitoring of working condition circuit, comprise dsp chip, analog to digital converter ADC, agc circuit, FLASH memory and acoustic pickup, described acoustic pickup is connected with the input end of agc circuit, the output terminal of described agc circuit is connected with the input end of analog to digital converter ADC, the described output terminal of analog to digital converter ADC is connected with the input end of dsp chip, described dsp chip is connected with FLASH memory, described dsp chip is also connected with the Hall element on screw propeller motor, obtain the rotary speed information that motor hall device provides, described dsp chip by UART by delivering.
Further, described acoustic pickup is placed on by screw propeller motor.
Further, the model of described dsp chip is: the two MAC floating-point AudioDSP of 32bit.
Further, described analog to digital converter ADC adopts 24bit sigma delta ADC, and sample frequency is 128KHz.
Further, described dsp chip adopts 24bit audio frequency DSP, maximum operation frequency 300MHz.
Further, the operating mode report frequency of this observation circuit is 1Hz.
Relative to prior art, many rotor wing unmanned aerial vehicles motor helical oar monitoring of working condition circuit described in the utility model has following advantage: screw propeller is generally made up of carbon fibre material, its root due to moment of torsion larger, easy generation fatigue damage, fatigue damage can produce certain deformation to screw propeller, also can change with the sound produced during windage, this observation circuit is based on the analysis to this sound, by detecting this sound variation, the degree of wear of motor bearings can be judged, can give warning in advance before unmanned plane motor helical oar breaks down, carry out in time overhauling and changing accessory, in order to avoid there is suddenly the aviation accident caused by motor helical oar fault when flying.
Accompanying drawing explanation
The accompanying drawing forming a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is theory diagram of the present utility model.
Description of reference numerals:
1-Hall element, 2-screw propeller motor, 3-acoustic pickup.
Embodiment
It should be noted that, when not conflicting, the embodiment in the utility model and the feature in embodiment can combine mutually.
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
As shown in Figure 1, a kind of many rotor wing unmanned aerial vehicles motor helical oar monitoring of working condition circuit, comprise dsp chip, analog to digital converter ADC, agc circuit, FLASH memory and acoustic pickup 3, described acoustic pickup 3 is connected with the input end of agc circuit, the output terminal of described agc circuit is connected with the input end of analog to digital converter ADC, the described output terminal of analog to digital converter ADC is connected with the input end of dsp chip, described dsp chip is connected with FLASH memory, described dsp chip is also connected with the Hall element 1 on screw propeller motor 2, obtain the rotary speed information that motor hall device provides, described dsp chip by UART by delivering.It is other that described acoustic pickup 3 is placed on screw propeller motor 2.The model of described dsp chip is: the two MAC floating-point AudioDSP of 32bit, described dsp chip adopts 24bit audio frequency DSP, maximum operation frequency 300MHz, described analog to digital converter ADC adopts 24bit sigma delta ADC, sample frequency is 128KHz, and the operating mode report frequency of this observation circuit is 1Hz.
The course of work of this example:
Learning process before aircraft delivery: control electric machine rotation, the operational sound of motor helical oar is recorded in face at each speed, and dsp chip extracts eigenwert, and is transverse axis with rotating speed, and the form of morphogenesis characters value, is stored in FLASH memory.
Normal flight monitoring of working condition process: produce sound when motor helical oar rotates, voice signal is converted to electric signal by the acoustic pickup 3 on motor side, be sent in agc circuit, gain-adjusted is carried out by agc circuit, then be sent in analog to digital converter ADC and carry out digitizing, analog to digital converter ADC is sent in dsp chip by after voice signal digitizing, carry out extraction and the analysis of sound characteristic value, dsp chip obtains the rotary speed information that motor hall device provides simultaneously, then the eigenwert form in FLASH memory is read, carry out eigenwert comparison, as noted abnormalities, by UART, abnormal information is sent.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. the oar of rotor wing unmanned aerial vehicle motor helical more than kind monitoring of working condition circuit, it is characterized in that: comprise dsp chip, analog to digital converter ADC, agc circuit, FLASH memory and acoustic pickup, described acoustic pickup is connected with the input end of agc circuit, the output terminal of described agc circuit is connected with the input end of analog to digital converter ADC, the described output terminal of analog to digital converter ADC is connected with the input end of dsp chip, described dsp chip is connected with FLASH memory, described dsp chip is also connected with the Hall element on screw propeller motor, described dsp chip by UART by delivering.
2. one many rotor wing unmanned aerial vehicles motor helical oar monitoring of working condition circuit according to claim 1, is characterized in that: described acoustic pickup is placed on by screw propeller motor.
3. one many rotor wing unmanned aerial vehicles motor helical oar monitoring of working condition circuit according to claim 1 and 2, is characterized in that: the model of described dsp chip is: the two MAC floating-point AudioDSP of 32bit.
4. one many rotor wing unmanned aerial vehicles motor helical oar monitoring of working condition circuit according to claim 1 and 2, is characterized in that: described analog to digital converter ADC adopts 24bit sigma delta ADC, and sample frequency is 128KHz.
5. one many rotor wing unmanned aerial vehicles motor helical oar monitoring of working condition circuit according to claim 1 and 2, is characterized in that: described dsp chip adopts 24bit audio frequency DSP, maximum operation frequency 300MHz.
6. one many rotor wing unmanned aerial vehicles motor helical oar monitoring of working condition circuit according to claim 1 and 2, is characterized in that: the operating mode report frequency of this observation circuit is 1Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521042190.XU CN205209768U (en) | 2015-12-14 | 2015-12-14 | Many rotor unmanned aerial vehicle motor screw operating mode observation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521042190.XU CN205209768U (en) | 2015-12-14 | 2015-12-14 | Many rotor unmanned aerial vehicle motor screw operating mode observation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205209768U true CN205209768U (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521042190.XU Expired - Fee Related CN205209768U (en) | 2015-12-14 | 2015-12-14 | Many rotor unmanned aerial vehicle motor screw operating mode observation circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN205209768U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106774381A (en) * | 2016-11-23 | 2017-05-31 | 歌尔股份有限公司 | The detection method of a kind of unmanned plane and its state of flight, wearable device |
| CN106872167A (en) * | 2015-12-14 | 2017-06-20 | 天津益华微电子有限公司 | A kind of unmanned plane observation circuit |
-
2015
- 2015-12-14 CN CN201521042190.XU patent/CN205209768U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872167A (en) * | 2015-12-14 | 2017-06-20 | 天津益华微电子有限公司 | A kind of unmanned plane observation circuit |
| CN106774381A (en) * | 2016-11-23 | 2017-05-31 | 歌尔股份有限公司 | The detection method of a kind of unmanned plane and its state of flight, wearable device |
| WO2018095061A1 (en) * | 2016-11-23 | 2018-05-31 | 歌尔股份有限公司 | Unmanned aerial vehicle and method for detecting flight state thereof, and wearable apparatus |
| CN106774381B (en) * | 2016-11-23 | 2019-07-19 | 歌尔股份有限公司 | Detection method, the wearable device of a kind of unmanned plane and its state of flight |
| US10817001B2 (en) | 2016-11-23 | 2020-10-27 | Goertek Inc. | Unmanned aerial vehicle and method for detecting flight state thereof, and wearable device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 Termination date: 20201214 |