CN101373558B - Wireless optical transmission and pick-up method and apparatus for high speed rotating shaft sensing data - Google Patents
Wireless optical transmission and pick-up method and apparatus for high speed rotating shaft sensing data Download PDFInfo
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Abstract
The invention discloses a wireless optical transmission and pickup method and a device of high-speed rotating shaft sensing data, which belong to the field of data optical transmission, pickup technique and device. The device consists of a fixed module and a rotating shaft module arranged on a shaft and rotating along with the shaft, wherein the fixed module is arranged on a fixed device opposite to the rotating shaft; and the fixed module is wirelessly connected with the rotating shaft module through optical signal transmission and reception. The method comprises the following steps: the data collected by a sensor arranged on a thimble is subjected to A/D conversion firstly for converting analog signals into digital signals, and buffered by an MCU to drive an optical signal emitter to emit optical signals; an optical signal receiver receives the emitted optical signals, and converts the emitted optical signals into electrical signals which are buffered by the MCU and converted into standard serial port signals; and the standard serial port signals are uploaded to a computer for monitoring. The invention has the advantages of low energy consumption, long working time of the rotating shaft module, less time of changing batteries, simple structure and reliable communication.
Description
Technical field
The invention belongs to light transmission, pickup technology and the device scope of data, relate in particular to wireless optical transmission, pick-up method and the device of high speed rotating shaft sensing data.
Background technology
Rotating shaft for High Rotation Speed, in its course of work, higher torque, temperature, inertial force and vibration are often being born in rotating shaft, in case these parameters exceed the scope of license and in time do not find, to cause huge security incident, need for the purpose of safety to its torque, stress, temperature, etc. parameter carry out real-time monitoring.In general, first by the real-time corresponding rotating shaft running parameter of collection of sensor that is installed on the axle, then data are sent to corresponding processor and carry out data analysis processing and demonstration.Because installation of sensors is in the rotating shaft of High Rotation Speed, best data transfer mode is to carry out data communication by wireless mode, and the device on the axle also can only power by electric battery or wireless energy, and this has just proposed very high low-power consumption requirement to the unit on the axle.
In the prior art, often realize sensing data transfer on the axle by the method that adopts radio or wireless optical.For wireless mode, need to settle antenna to launch at axle, this has increased the complicacy of system architecture, and the impact of the signal that easily is interfered.In addition, because wireless wavelength is long, the speed of transmission of information is also slower, the work that transmitter need to continue, and the parameter of guarantee Real-time Collection is sent timely, and this is to a certain extent so that wireless mode power consumption is many.
Comparatively speaking, the mode of wireless optical has just overcome above shortcoming, because light wavelength is than the wireless much shorter of wanting, the speed of transmitting data will be a lot of soon, just can finish the transmission of data at a limited angular range.At existing patent U.S.5, in 019,814, just adopted the mode of infrared communication, it on axle along one week of rotating shaft having settled 8 pairs of light emitting diodes to finish the transmission of 8 byte datas, in pair of diodes, one of them is responsible for transmitting the data of a byte, and it is synchronous that another is responsible for data.At the receiving trap of stiff end, settled the phototriode corresponding with diode to accept the signal of diode emission.But, this device volume is large, also more complicated of structure, and because the light of diode emission has certain angular range, so adjacent phototriode is when the data of the emission of accepting corresponding with it diode, easily phase mutual interference, particularly little at the rotating shaft radius, when transmitting range was far away, interference ratio was more outstanding mutually.
Summary of the invention
Purpose of the present invention is just in order to solve the wireless transmission problem of sensing data on the present high speed rotating shaft, provide simpler on a kind of structure, communicate by letter more reliable, and the wireless optical transmission of the high speed rotating shaft sensing data of super low energy consumption, pick-up method and device, it is characterized in that, the wireless optical transmission of described high speed rotating shaft sensing data, pick device is comprised of rotary axis module two parts with the rotating shaft rotation on stuck-module and the axle, stuck-module is installed on the stationary installation relative with rotating shaft, launches by light signal between stuck-module and the rotary axis module, wireless connections are carried out in acceptance.
The triggering laser instrument 3 of described stuck-module and optical signal receiver 4 are installed in side by side with rotating shaft and are relatively fixed on the device, and light signal receives MCU 13 and connects respectively optical signal receiver 4, interface 8 and a-power supply 10, and interface 8 connects computing machines 9; Its optical signal receiver 4 is phototriodes, is used for the light signal that receives is converted into electric signal.
Described rotary axis module is fixed in the rotating shaft 1 by the collar 2, trigger pip receiver 5, optical signal transmitter 6 and sensor 7 are fixed on the collar 2 side by side, light signal emission MCU 12 connects respectively trigger pip receiver 5, optical signal transmitter 6, A/D conversion 14 and B-source 11, and sensor 7 is connected with A/D conversion 14.
Described triggering laser instrument 3 and trigger pip receiver 5, or the relative distance between optical signal receiver 4 and the optical signal transmitter 6 is the communication distance of 50mm-200mm.
Described interface 8 adopts RS-232 interface.
The wireless optical transmission of described high speed rotating shaft sensing data, pick-up method are that the data that the sensor 7 on the collar 2 gathers at first change 14 through A/D, analog signal conversion is become digital signal, cushion and drive optical signal transmitter 6 to stuck-module utilizing emitted light signal through light signal emission MCU 12; After optical signal receiver 4 receives optical signal transmitter 6 utilizing emitted light signals, phototriode as optical signal receiver 4 is converted into electric signal with the utilizing emitted light signal, these electrical signal datas receive MCU 13 bufferings by light signal, and are converted to the computing machine 9 that the standard serial port signal is uploaded to responsible monitoring.
Described trigger pip receiver 5 is when the rotating shaft rotation system is started working, wait is triggered by the laser signal that triggers laser instrument 3 lasting emissions, when the rotating shaft rotation system turn to trigger pip receiver 5 accept window facing to the position of the laser signal emitting area that triggers laser instrument 3 time, the laser signal that acceptance triggering laser instrument 3 is launched is as trigger pip, after trigger pip receiver 5 receives and triggers laser signal, can send out a pulse and launch MCU12 to light signal, at this moment light signal emission MCU12 will cross optical signal transmitter 6 to the data communication device of buffering and launch, while optical signal transmitter 6 begins to launch by sensor is surveyed the light signal that the conversion of rotating shaft parameter obtains, optical signal receiver 4 will guarantee to be installed in correct position, when receiving the triggering laser signal that triggers laser instrument 3 with assurance trigger pip receiver 5, optical signal receiver 4 can be received the light signal that optical signal transmitter 6 is launched just.After a signal emission was finished, optical signal transmitter 6 just quit work, until trigger pip receiver 5 is triggered next time.
Intentionally effect of the present invention is by above process, and native system has realized being finished by the mode of intermittently communicating the transmission of sensing data.This communication mode, only in a special angle scope in each week is rotated in rotating shaft, mode by serial is converted into light signal with data and is sent to stuck-module, in other angular regions, optical signal transmitter is not worked, the energy utilization that this has just greatly improved rotary axis module has reduced energy consumption, can guarantee the long work of rotary axis module and not need to make rotating shaft to quit work to change battery; And single optical signal transmitter and the receiver of only in certain angle, communicating by letter, simpler on the structure, communicate by letter more reliable.
Description of drawings
Fig. 1 is the structural representation corresponding to first embodiment of the invention.
Fig. 2 a, 2b, 2c and 2d are the process schematic diagram of intermittently communicating of the present invention.
Fig. 3 a and 3b are the schematic block circuit diagram of stuck-module of the present invention and rotary axis module.
Fig. 4 is the schematic diagram of the double-core microcontroller scheme of another embodiment of the present invention.
Fig. 5 is the principle schematic of the tangential launch scenario of optical signal transmitter of another embodiment of the present invention.
Fig. 6 be optical signal transmitter radial emission scheme of the present invention and tangential emission put case at optical signal receiver plane projection shape matching schematic diagram.
To be another embodiment of the present invention arrange schematic diagram for the mode of operation of different communication distance to Fig. 7.
Embodiment
Below the invention will be further described for accompanying drawing and specific embodiment.
At first referring to Fig. 1, wireless optical transmission, the pick device that is dependent on first embodiment of the invention described.Such as Fig. 1, system is comprised of rotary axis module two parts with the rotating shaft rotation on stuck-module and the axle, stuck-module wherein is installed on a certain stationary installation of rotating shaft certain distance, it comprises: trigger laser instrument 3 and optical signal receiver 4, optical signal receiver 4 is can be a phototriode, is used for the light signal that receives is converted into electric signal.The schematic block circuit diagram of stuck-module is referring to Fig. 3 a, after optical signal receiver 4 is converted into electric signal with the light signal that receives, receive MCU 13 by light signal and carry out buffering and the processing of data, be translated into the standard serial port signal, upload to the computing machine 9 of being responsible for monitoring by RS-232 interface 8.
Rotary axis module is fixed in the rotating shaft 1 by the collar 2, and it comprises: trigger pip receiver 5, optical signal transmitter 6 and sensor 7.The schematic block circuit diagram of rotary axis module is referring to Fig. 3 b, and sensor 7 continues to such an extent that gather the data of rotating shaft parameter, these data through A/D conversion 14 conversions after, MCU 12 cushions and processes by the light signal emission.Trigger pip receiver 5 can be a phototriode, after it receives the triggering laser signal, can send out a pulse to light signal emission MCU 12, at this moment light signal emission MCU 12 will cross optical signal transmitter 6 to the data communication device of buffering and launch, and wherein optical signal transmitter 6 can be a light emitting diode (LED).
Referring to Fig. 2 a, 2b, 2c and 2d, the course of work of intermittently communicating of the present invention has been described, at Fig. 2 a, the stage of 2b and 2c, trigger laser instrument 3 continual emissions and trigger laser signal, sensor 7 is simultaneously also in the image data that continues, but optical signal transmitter 6 is not worked.When rotating shaft forwards appropriate position to, such as Fig. 2 d, when trigger pip receiver 5 can be received trigger pip, then optical signal transmitter 6 beginnings to light signal emission MCU 12, were carried out buffering and the conversion of optical signal data with the mode utilizing emitted light signal of light signal.Because the speed of light signal transmission of information is fast, so very fast of whole communication process, optical signal transmitter 6 then quits work after having launched data, until rotating shaft rotates to again the position that makes trigger pip receiver 5 can receive trigger pip.This wireless optical transmission, pick device will repeat the course of work of above intermittently communicating in real work.
In being dependent on an alternative embodiment of the invention, for the situation of multichannel sensing data, such as Fig. 4, adopt the scheme of double-core microcontroller.Because the multichannel sensing data easily causes microprocessor controls sampling and the time series conflict of communicating by letter, only adopt light signal emission MCU 12 to be difficult to finish and control in real time data buffering, conversion and signal emission.Such as Fig. 4, adopt double-core microcontroller 1 and MCU 2 to replace single light signal emission MCU 12 to address this problem, wherein MCU 1 is responsible for the process of data acquisition and buffering, then the mode of data communication device being crossed serial is sent to MCU 2, by MCU 2 control data-switching and signal emission.
In being dependent on an alternative embodiment of the invention, such as Fig. 5, optical signal transmitter can be according to actual angle or path of taking the utilizing emitted light signal optimized.In the first embodiment of the present invention, transmitter is along the radial emission light signal of rotating shaft, and the projection of optical signal beam on the optical signal receiver plane is exactly circular or approaches circle like this, shown in the a-quadrant among Fig. 6.When making optical signal transmitter 15 along the tangential utilizing emitted light signal of rotating shaft such as Fig. 5, then the projection on the optical signal receiver plane is exactly oval, shown in B zone among Fig. 6.Dash area C zone among Fig. 6 is exactly the invalid light projection of wasting on the optical signal receiver plane along the rotating shaft radial emission along the tangential transmitting ratio of rotating shaft, because this part light can not received by optical signal receiver.So, optical signal receiver is along the scheme of the tangential utilizing emitted light signal of rotating shaft, the energy of light signal is more concentrated, efficient is higher, and, in the situation that rotating shaft rotates a circle with same speed, with respect to the scheme along the rotating shaft radial emission, can finish with less emission angle the communication of data along the scheme of the tangential emission of rotating shaft, this has just reduced the energy consumption of optical signal transmitter.
In being dependent on an alternative embodiment of the invention, we have designed the mode of operation switching of optical signal transmitter.Because rotary axis module has very high requirement to low energy consumption, the energy consumption that reduces to greatest extent each several part on the axle is one of fundamental purpose of the present invention.In actual applications, short-range communication and telecommunication, light signal strength requirement to optical signal transmitter is different, such as Fig. 7, under low-power consumption mode, can realize the communicating requirement of 50mm-500mm, if but communication distance more in short-term, required light signal strength is desired low during more than the 500mm communication distance, if still be operated under this mode of operation, then caused the waste of energy, therefore, the present embodiment is by the resistance of connecting to optical signal transmitter, limit its electric current, and then reduce its light signal strength, and Here it is such as the super low-power consumption pattern among Fig. 7, and it is applicable to the communication distance of 50mm-200mm.Two kinds of mode of operations are switched by the size that a switch changes the resistance of connecting.
Claims (1)
1. the wireless optical transmission of a high speed rotating shaft sensing data, pick-up method, the wireless optical transmission of high speed rotating shaft sensing data, pick device is comprised of rotary axis module two parts with the rotating shaft rotation on stuck-module and the axle, stuck-module comprises triggering laser instrument (3) and optical signal receiver (4), optical signal receiver (4) is a phototriode, be used for the light signal that receives is converted into electric signal, after optical signal receiver (4) is converted into electric signal with the light signal that receives, receives MCU (13) by light signal and carry out buffering and the processing of data; Rotary axis module is fixed in the rotating shaft (1) by the collar (2), and it comprises: trigger pip receiver (5), optical signal transmitter (6) and sensor (7); The data of sensor (7) continuous collecting rotating shaft parameter, these data are cushioned and are processed by light signal emission MCU (12) after changing through A/D conversion (14); Described stuck-module is installed on the stationary installation relative with rotating shaft, launch by light signal between stuck-module and the rotary axis module, wireless connections are carried out in reception, it is characterized in that, sensor (7) is installed on the collar (2), triggering laser instrument (3) and optical signal receiver (4) is installed in side by side with rotating shaft and is relatively fixed on the device, trigger laser instrument (3) and launch continuously the triggering laser signal, sensor (7) is simultaneously also in the data that gather constantly the rotating shaft parameter, the data that sensor (7) gathers at first become digital signal through A/D conversion (14) with analog signal conversion, but optical signal transmitter (6) is not worked; When rotating shaft forwards appropriate position to, after trigger pip receiver (5) receives and triggers laser signal, can send out a pulse and launch MCU (12) to light signal, at this moment light signal emission MCU (12) will cross optical signal transmitter (6) to the data communication device of buffering and launches after optical signal receiver (4) receives optical signal transmitter (6) utilizing emitted light signal, phototriode as optical signal receiver (4) is converted into electric signal with the utilizing emitted light signal, these electrical signal datas receive MCU (13) buffering by light signal, and are converted to the computing machine (9) that the standard serial port signal is uploaded to responsible monitoring; Optical signal transmitter (6) then quits work after having launched data, until rotating shaft rotates to again the position that makes trigger pip receiver (5) receive trigger pip, in other angular regions, optical signal transmitter is not worked.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810112280 CN101373558B (en) | 2008-05-22 | 2008-05-22 | Wireless optical transmission and pick-up method and apparatus for high speed rotating shaft sensing data |
| JP2009095680A JP2009282965A (en) | 2008-05-22 | 2009-04-10 | High-speed-contactless measurement data communication system and communication method thereof |
| JP2013117531A JP5496394B2 (en) | 2008-05-22 | 2013-06-04 | High-speed non-contact measurement data communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810112280 CN101373558B (en) | 2008-05-22 | 2008-05-22 | Wireless optical transmission and pick-up method and apparatus for high speed rotating shaft sensing data |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101373558A CN101373558A (en) | 2009-02-25 |
| CN101373558B true CN101373558B (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200810112280 Expired - Fee Related CN101373558B (en) | 2008-05-22 | 2008-05-22 | Wireless optical transmission and pick-up method and apparatus for high speed rotating shaft sensing data |
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| JP (2) | JP2009282965A (en) |
| CN (1) | CN101373558B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104566286B (en) * | 2014-09-25 | 2018-09-07 | 黄林军 | A kind of switching device and the lighting rod using the switching device |
| FR3037646B1 (en) * | 2015-06-17 | 2019-12-20 | Bia | TRANSMISSION OF INFORMATION AND ENERGY BETWEEN A MOBILE SENSOR AND A FIXED ELEMENT |
| CN105403236B (en) * | 2015-11-18 | 2017-02-08 | 中国矿业大学 | Optical fiber sensing device and method of mechanical state of coal cutter |
| CN105679005A (en) * | 2016-01-18 | 2016-06-15 | 南京航空航天大学 | Rotating apparatus non-contact signal transmission apparatus based on LIFI and infrared light |
| CN106959693B (en) * | 2017-04-13 | 2023-08-29 | 无锡职业技术学院 | AGV intelligent vehicle magnetic guide moving and laser guidance system |
| JP2019163958A (en) * | 2018-03-19 | 2019-09-26 | 株式会社小野測器 | Torque sensor |
| CN113418459B (en) * | 2021-07-01 | 2022-11-01 | 新余学院 | Detection device for electric automation equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87205157U (en) * | 1987-09-05 | 1988-03-30 | 电子工业部第十研究所 | Physical parameter measuring device for motor-rotor |
| CN1551056A (en) * | 2003-03-20 | 2004-12-01 | 上海理工大学 | Rotation signal photoelectric-conversion serial transmitting system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01125697A (en) * | 1987-05-13 | 1989-05-18 | Bently Nevada Corp | System and method of wireless data coupling |
| JPH04195599A (en) * | 1990-11-28 | 1992-07-15 | Okuma Mach Works Ltd | Noncontact type signal transmitting equipment |
| JPH0668373A (en) * | 1992-08-24 | 1994-03-11 | Toshiba Corp | Transmitter receiver for various quantities of rotary body |
| JP3833047B2 (en) * | 2000-04-28 | 2006-10-11 | 独立行政法人科学技術振興機構 | Data transmission system |
| JP2004126852A (en) * | 2002-10-01 | 2004-04-22 | Nsk Ltd | Rolling device with wireless sensor |
-
2008
- 2008-05-22 CN CN 200810112280 patent/CN101373558B/en not_active Expired - Fee Related
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2009
- 2009-04-10 JP JP2009095680A patent/JP2009282965A/en active Pending
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2013
- 2013-06-04 JP JP2013117531A patent/JP5496394B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87205157U (en) * | 1987-09-05 | 1988-03-30 | 电子工业部第十研究所 | Physical parameter measuring device for motor-rotor |
| CN1551056A (en) * | 2003-03-20 | 2004-12-01 | 上海理工大学 | Rotation signal photoelectric-conversion serial transmitting system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009282965A (en) | 2009-12-03 |
| CN101373558A (en) | 2009-02-25 |
| JP2013178828A (en) | 2013-09-09 |
| JP5496394B2 (en) | 2014-05-21 |
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