CN106248986B - A kind of speed acquisition device and method - Google Patents
A kind of speed acquisition device and method Download PDFInfo
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- CN106248986B CN106248986B CN201610675650.5A CN201610675650A CN106248986B CN 106248986 B CN106248986 B CN 106248986B CN 201610675650 A CN201610675650 A CN 201610675650A CN 106248986 B CN106248986 B CN 106248986B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
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Abstract
The invention discloses a kind of speed acquisition device and methods, the device includes: speed signal acquisition module, signal conditioning module, signal processing module and signal computing module, wherein, the sine wave speed signal of collected vent external magneto-electric encoder is sent to the signal conditioning module by speed signal acquisition module；Signal conditioning module improves the sine wave speed signal received, obtains conditioned signal, and be sent to the signal processing module；Signal processing module handles to obtain the processing signal comprising frequency information, and the processing signal comprising frequency information is sent to the signal computing module.Computing module, which calculates, to be obtained frequency values and then obtains motor speed.The high and highly reliable purpose of the acquisition precision to motor velocity signal is realized through the invention.
Description
Technical field
The present invention relates to speed acquisition technical fields, more particularly to a kind of locomotive magneto-electric sine wave rotary encoder speed
Spend acquisition device and method.
Background technique
Along with the development of Chinese Railway, higher requirement is proposed to the performance of locomotive.Locomotive speed is transported as locomotive
One of the important indicator of row safety, has obtained the attention of security department and maintenance department.Meanwhile it to realize to locomotive well
Control is also required to by acquiring more accurate, more timely and more accurate motor velocity signal.
Since the controller driving motor of motor operates, and motor is usually rotated with encoder, the feedback letter of encoder
Number it is transported to controller, it will be able to controller be made to obtain the operating condition of motor.In order to guarantee motor control performance well, compile
The feedback signal of code device allows for providing a large amount of pulse, especially when revolving speed is very low, but uses traditional increasing
Amount formula encoder can generate a large amount of pulse, can bring various problems, and work as motor high speed rotation (more than 6000rpm)
When, transmission and processing digital signal are difficult.In this case, traditional incremental encoder is handled to servo motor
Bandwidth needed for signal will be well over MHz thresholding.In view of the above-mentioned problems, low speed would generally be solved using magneto-electric rotary encoder
The problem of spending conventional delta formula encoder pulse, does not need additional power supply unit as well as magneto-electric code sensor, together
When installation it is simple, so at present to magneto-electric rotary encoder in terms of locomotive control using more.
But since low velocity section magneto-electric encoder output frequency is lower and amplitude is smaller, existing speed is adopted
Acquisition means sensitivity is lower, judges inaccuracy to motor speed information, cannot participate in the control of vehicle substantially；Electricity current simultaneously
The processing of machine speed is mostly that single channel acquisition substantially reduces the reliable of device once hardware fault, which occurs, will be isolated motor
Property.And the existing collected motor velocity signal of speed acquisition device has that precision is lower and reliability is weaker,
Be no longer satisfied the requirement in terms of existing locomotive control.
Summary of the invention
It is directed to the above problem, the present invention provides a kind of speed acquisition device and method, believes to realize motor speed
Number acquisition precision is high and highly reliable purpose.
To achieve the goals above, according to the first aspect of the invention, a kind of speed acquisition device is provided, the device packet
It includes:
The speed signal acquisition module, for believing the sinusoidal wave velocity of collected vent external magneto-electric encoder
Number it is sent to the signal conditioning module；
The signal conditioning module obtains conditioned signal, concurrently for improving the sine wave speed signal received
Give the signal processing module；
The signal processing module obtains the processing comprising frequency information for handling the conditioned signal received
Signal, and the processing signal comprising frequency information is sent to the signal computing module；
The signal computing module obtains frequency values for calculating according to the processing signal comprising frequency information, and
Motor speed is calculated by the frequency values.
Preferably, the signal conditioning module includes bleeder circuit, the protection clamp being connected with the bleeder circuit and filter
Wave circuit, and the gain circuitry being connected with the protection clamp and filter circuit, wherein
The bleeder circuit, for carrying out decompression processing to the sine wave speed signal received, after obtaining decompression
Primary sinusoid speed signal, and the primary sinusoid signal is sent to protection clamp and filter circuit；
The protection clamp and filter circuit, after the primary sinusoid signal for will receive is converted to stable signal
The filtering for carrying out signal improves to obtain the first conditioned signal, and first conditioned signal is sent to the gain circuitry；
The gain circuitry obtains the tune for the first conditioned signal received being fixed the amplification of gain
Signal is managed, and is sent to the signal processing module.
Preferably, protection clamp and filter circuit include protecting clamper, and with the protecting clamper
Connected filter circuit, wherein
The protecting clamper is stablized for inhibiting the primary sinusoid speed signal to generate high pressure amplitude
Primary sinusoid signal, and be sent to the filter circuit；
The filter circuit obtains institute for eliminating the high-frequency noise in the stable primary sinusoid speed signal
The first conditioned signal is stated, and is sent to the gain circuitry.
Preferably, the signal processing module include voltage acquisition and A/D converter circuit, sluggish pulse generation circuit and
The signal isolation circuit being connected with the voltage acquisition and A/D converter circuit and the sluggish pulse generation circuit, wherein
The signal isolation circuit includes the first signal isolation circuit and second signal isolation circuit；
The voltage acquisition and A/D converter circuit for acquiring the sine waveform of the conditioned signal, and are converted to
The sine wave signal of low amplitude value, and the sine wave signal of the low amplitude value is sent to first signal isolation circuit；
It is described sluggishness pulse generation circuit, for acquire the conditioned signal sine wave generate comprising frequency values obtain it is digital
Pulse square wave signal, and obtain digit pulse square-wave signal comprising frequency values by described and be sent to the second signal isolation circuit；
First signal isolation circuit, it is described for the sine wave signal for the low amplitude value that insulation blocking receives
Second signal isolation circuit, for insulation blocking receive described in include frequency values digit pulse square-wave signal, pass through institute
The first signal isolation circuit and the second signal isolation circuit are stated, the processing signal comprising frequency information is obtained, by institute
It states the processing signal comprising frequency information and is sent to the signal computing module.
According to the second aspect of the invention, a kind of speed acquisition method is provided, this method is suitable for first party of the present invention
Speed acquisition device described in face, the device include speed signal acquisition module, signal conditioning module, signal processing module and
Signal computing module, the speed acquisition method include:
The speed signal acquisition module sends out the sine wave speed signal of collected vent external magneto-electric encoder
Give the signal conditioning module；
The signal conditioning module improves the sine wave speed signal received, obtains conditioned signal, and be sent to
The signal processing module；
The signal processing module obtains the processing comprising frequency information for handling the conditioned signal received
Signal, and the processing signal comprising frequency information is sent to the signal computing module；
The signal computing module obtains frequency values for calculating according to the processing signal comprising frequency information, and
Motor speed is calculated by the frequency values.
Preferably, the signal conditioning module includes bleeder circuit, protects clamp and filter circuit and gain circuitry,
In, the sine wave speed signal received conditioning is converted to conditioned signal by the signal conditioning module, and is sent to institute
Stating signal processing module includes:
The bleeder circuit carries out decompression processing to the sine wave speed signal received, first after being depressured
Sine wave speed signal, and the primary sinusoid signal is sent to the protection clamp and filter circuit；
The primary sinusoid signal that the protection clamp and filter circuit will receive carries out after being converted to stable signal
The filtering of signal improves to obtain the first conditioned signal, and first conditioned signal is sent to the gain circuitry；
The gain circuitry the first conditioned signal received is fixed the amplification of gain, obtains the conditioning letter
Number, and it is sent to the signal processing module.
Preferably, the protection clamp and filter circuit include protecting clamper and filter circuit, wherein the protection
The primary sinusoid signal received is carried out conditioning and is converted to the first conditioned signal by clamp and filter circuit, and is sent to described
Gain circuitry, comprising:
The protecting clamper inhibits the primary sinusoid speed signal to generate high pressure amplitude, obtains stable first
Sine wave signal, and it is sent to the filter circuit；
The filter circuit eliminates the high-frequency noise in the stable primary sinusoid speed signal, obtains described first
Conditioned signal, and it is sent to the gain circuitry.
Preferably, the signal processing module includes voltage acquisition and A/D converter circuit, sluggish pulse generation circuit, first
Signal isolation circuit and second signal isolation circuit, wherein the signal processing module handles the conditioned signal received,
The processing signal comprising frequency information is obtained, and the processing signal comprising frequency information is sent to the signal and calculates mould
Block, comprising:
The voltage acquisition and A/D converter circuit, acquire the sine waveform of the conditioned signal, and are converted to by a narrow margin
The sine wave signal of value, and the sine wave signal of the low amplitude value is sent to first signal isolation circuit；
The sluggishness pulse generation circuit, the sine wave for acquiring the conditioned signal, which is generated, obtains digit pulse comprising frequency values
Square-wave signal, and obtain digit pulse square-wave signal comprising frequency values by described and be sent to the second signal isolation circuit；
First signal isolation circuit, the sine wave signal for the low amplitude value that insulation blocking receives, described second
Signal isolation circuit, the digit pulse square-wave signal comprising frequency values that insulation blocking receives, believes by described first
Number isolation circuit and the second signal isolation circuit, obtain it is described include frequency information processing signal, described will include frequency
The processing signal of rate information is sent to the signal computing module.
Compared to the prior art, the present invention is encoded collected vent external magneto-electric by speed signal acquisition module
The sine wave speed signal of device is sent to the signal conditioning module；The sinusoidal velocity of wave that signal conditioning module conditioning receives
Signal is spent, obtains conditioned signal, and be sent to the signal processing module；The conditioning that signal processing module processing receives
Signal obtains the processing signal comprising frequency information, and the processing signal comprising frequency information is sent to the signal
Computing module.After the present invention is by acquisition sine wave speed signal, and realize using corresponding circuit to full speed segment signal
Acquisition and removal interference, and signal is improved, finally calculates and obtain frequency values and complete the accurate of motor speed
It calculates, and then realizes the high and highly reliable purpose of the acquisition precision to motor velocity signal.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram for speed acquisition device that the embodiment of the present invention one provides；
Fig. 2 is a kind of structural schematic diagram of speed acquisition device provided by Embodiment 2 of the present invention；
Fig. 3 is a kind of flow diagram for speed acquisition method that the embodiment of the present invention three provides.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Term " first " and " second " in description and claims of this specification and above-mentioned attached drawing etc. are for area
Not different objects, rather than for describing specific sequence.Furthermore term " includes " and " having " and their any deformations,
It is intended to cover and non-exclusive includes.Such as it contains the process, method of a series of steps or units, system, product or sets
It is standby not to be set in listed step or unit, but may include the step of not listing or unit.
Embodiment one
It is a kind of structural schematic diagram for speed acquisition device that the embodiment of the present invention one provides referring to Fig. 1, which includes:
Speed signal acquisition module 10, the signal conditioning module 11 being connected with the signal acquisition module 10, with the letter
The connected signal processing module 12 of number conditioning module 11, and the signal computing module being connected with the signal processing module 12
13, wherein
The speed signal acquisition module 10, for by the sinusoidal wave velocity of collected vent external magneto-electric encoder
Signal is sent to the signal conditioning module 11；
The signal conditioning module 11 obtains conditioned signal for improving the sine wave speed signal received, and
It is sent to the signal processing module 12；
The signal processing module 12 obtains the place comprising frequency information for handling the conditioned signal received
Signal is managed, and the processing signal comprising frequency information is sent to the signal computing module 13；
The signal computing module 13 obtains frequency values for calculating according to the processing signal comprising frequency information,
And motor speed is calculated by the frequency values.
Technical solution disclosed in embodiment according to the present invention one, it can be deduced that believed in speed acquisition device by speed
The sine wave speed signal of collected vent external magneto-electric encoder is sent to the signal condition mould by number acquisition module
Block；Signal conditioning module improves the sine wave speed signal received, obtains conditioned signal, and be sent at the signal
Manage module；The conditioned signal that receives of signal processing module processing, obtains the processing signal comprising frequency information, and by institute
State the processing signal computing module comprising frequency information.After the present invention is by acquisition sine wave speed signal, and use corresponding
Signaling module realize acquisition to full speed segment signal and removal interference, and signal is improved, finally completed electricity
The accurate calculating of machine speed, and then realize the high and highly reliable purpose of the acquisition precision to motor velocity signal.
Embodiment two
To the description of speed acquisition device according to embodiments of the present invention one, referring to fig. 2 for second embodiment of the present invention provides
Speed acquisition device, wherein the primary structure for forming the modules of the speed acquisition device, the speed has been described in detail
Acquisition device is mainly made of speed signal acquisition module, signal conditioning module, signal processing module and signal computing module,
Wherein,
The signal conditioning module includes bleeder circuit 21, the protection clamp and filtered electrical being connected with the bleeder circuit 21
Road 22, and the gain circuitry 23 being connected with the protection clamp and filter circuit 22, wherein
The bleeder circuit 21 is depressured for carrying out decompression processing to the sine wave speed signal received
Primary sinusoid speed signal afterwards, and the primary sinusoid signal is sent to the protection clamp and filter circuit 22；
The protection clamp and filter circuit 22, the primary sinusoid signal for will receive are converted to stable signal
The filtering for carrying out signal afterwards improves to obtain the first conditioned signal, and first conditioned signal is sent to the gain circuitry 23；
Specifically, the protecting clamper is obtained for inhibiting the primary sinusoid speed signal to generate high pressure amplitude
To stable primary sinusoid signal, and it is sent to the filter circuit；
The filter circuit obtains institute for eliminating the high-frequency noise in the stable primary sinusoid speed signal
The first conditioned signal is stated, and is sent to the gain circuitry.
The gain circuitry 23 obtains described for the first conditioned signal received being fixed the amplification of gain
Conditioned signal, and it is sent to the signal processing module；
Wherein, the amplification of sine wave signal is realized using gain circuitry, to realize the accurate of speed signal when the slow-speed of revolution
Acquisition.
Correspondingly, the signal processing module includes voltage acquisition and A/D converter circuit 24, sluggish pulse generation circuit 25
And the signal isolation circuit being connected with the voltage acquisition and A/D converter circuit and the sluggish pulse generation circuit, wherein
The signal isolation circuit includes the first signal isolation circuit 26 and second signal isolation circuit 27；
The voltage acquisition and A/D converter circuit 24, for acquiring the sine waveform of the conditioned signal, and are converted
First signal isolation circuit 26 is sent to the sine wave signal of low amplitude value, and by the sine wave signal of the low amplitude value；
The sluggishness pulse generation circuit 25, the sine wave for acquiring the conditioned signal are generated comprising frequency values total
Word pulse square-wave signal, and obtain digit pulse square-wave signal comprising frequency values by described and be sent to the second signal isolation circuit
27；
Specifically, can be same by voltage acquisition and A/D converter circuit and sluggish pulse generation circuit in speed acquisition device
The acquisition function of Shi Shixian speed signal, the mutual redundancy of this two parts mutually verify, substantially increase the reliability of device.
First signal isolation circuit 26, for the sine wave signal for the low amplitude value that insulation blocking receives, institute
State second signal isolation circuit 27, for insulation blocking receive described in include frequency values digit pulse square-wave signal, lead to
First signal isolation circuit 26 and the second signal isolation circuit 27 are crossed, the processing comprising frequency information is obtained
The processing signal comprising frequency information is sent to the signal computing module by signal.
In the embodiment of the present invention two, pass through specifically retouching to the modules built-up circuit in speed acquisition device
It states, it can be deduced that handled in signal conditioning module by the decompression of bleeder circuit, and pass through protection clamp and filter circuit tune
After reason and gain circuitry signal are fixed the amplification of gain；Signal entering signal processing module, i.e. signal enter simultaneously
Voltage acquisition and A/D converter circuit and sluggish pulse generation circuit, voltage acquisition and A/D converter circuit realize adopting for sine waveform
Collection obtains the sine wave signal of low amplitude value, and sluggish pulse generation circuit realizes that sine wave generates impulse wave, completes to include frequency values
Digit pulse square-wave signal acquisition, the two combination realize full rate section speed acquisition, and by digital signal by signal every
From entering signal computing module after circuit, signal computing module, which calculates separately, to be obtained frequency values and then completes the accurate of motor speed
It calculates, realizes the high and highly reliable purpose of the acquisition precision to motor velocity signal.
Embodiment three
Corresponding with speed acquisition device disclosed in the embodiment of the present invention one and embodiment two, the embodiment of the present invention three is also
A kind of speed acquisition method is provided, is the flow diagram for the speed acquisition method that the embodiment of the present invention three provides referring to Fig. 3,
The speed acquisition device of a description according to embodiments of the present invention includes speed signal acquisition module, signal conditioning module, at signal
Module and signal computing module are managed, this method comprises:
S31, the speed signal acquisition module believe the sinusoidal wave velocity of collected vent external magneto-electric encoder
Number it is sent to the signal conditioning module；
S32, the signal conditioning module improve the sine wave speed signal received, obtain conditioned signal, concurrently
Give the signal processing module；
The conditioned signal that S33, signal processing module processing receive, obtains the processing comprising frequency information and believes
Number, and the processing signal comprising frequency information is sent to the signal computing module；
S34, the signal computing module are calculated according to the processing signal comprising frequency information obtains frequency values, and leads to
It crosses the frequency values and motor speed is calculated.
Correspondingly, the signal conditioning module includes bleeder circuit, protects clamp and filter circuit and gain circuitry,
In, the sine wave speed signal received conditioning is converted to conditioned signal by signal conditioning module described in step S32, concurrently
Giving the signal processing module includes:
The bleeder circuit carries out decompression processing to the sine wave speed signal received, first after being depressured
Sine wave speed signal, and the primary sinusoid signal is sent to the protection clamp and filter circuit；
The primary sinusoid signal that the protection clamp and filter circuit will receive carries out after being converted to stable signal
The filtering of signal improves to obtain the first conditioned signal, and first conditioned signal is sent to the gain circuitry；
The gain circuitry the first conditioned signal received is fixed the amplification of gain, obtains the conditioning letter
Number, and it is sent to the signal processing module.
Specifically, the protection clamp and filter circuit include protecting clamper and filter circuit, wherein the protection
The primary sinusoid signal received is carried out conditioning and is converted to the first conditioned signal by clamp and filter circuit, and is sent to described
Gain circuitry, comprising:
The protecting clamper inhibits the primary sinusoid speed signal to generate high pressure amplitude, obtains stable first
Sine wave signal, and it is sent to the filter circuit；
The filter circuit eliminates the high-frequency noise in the stable primary sinusoid speed signal, obtains described first
Conditioned signal, and it is sent to the gain circuitry.
Correspondingly, the signal processing module includes voltage acquisition and A/D converter circuit, sluggish pulse generation circuit, first
Signal isolation circuit and second signal isolation circuit, wherein the signal processing module handles the conditioned signal received,
The processing signal comprising frequency information is obtained, and the processing signal comprising frequency information is sent to the signal and calculates mould
Block, comprising:
The voltage acquisition and A/D converter circuit, acquire the sine waveform of the conditioned signal, and are converted to by a narrow margin
The sine wave signal of value, and the sine wave signal of the low amplitude value is sent to first signal isolation circuit；
The sluggishness pulse generation circuit, the sine wave for acquiring the conditioned signal, which is generated, obtains digit pulse comprising frequency values
Square-wave signal, and obtain digit pulse square-wave signal comprising frequency values by described and be sent to the second signal isolation circuit；
First signal isolation circuit, the sine wave signal for the low amplitude value that insulation blocking receives, described second
Signal isolation circuit, the digit pulse square-wave signal comprising frequency values that insulation blocking receives, believes by described first
Number isolation circuit and the second signal isolation circuit, obtain it is described include frequency information processing signal, described will include frequency
The processing signal of rate information is sent to the signal computing module.
The speed acquisition method provided in the embodiment of the present invention three, will be collected by speed signal acquisition module
The sine wave speed signal of vent external magneto-electric encoder is sent to the signal conditioning module；Signal conditioning module conditioning connects
The sine wave speed signal received, obtains conditioned signal, and be sent to the signal processing module；At signal processing module
Manage the conditioned signal that receives, the processing signal comprising frequency information, and by the processing signal comprising frequency information
It is sent to the signal computing module；Signal computing module, which calculates, to be obtained frequency values and then motor speed is calculated.And then it is real
The high and highly reliable purpose of the acquisition precision to motor velocity signal is showed.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For method disclosed in embodiment
For, since it is corresponding with device disclosed in embodiment, so being described relatively simple, related place is said referring to device part
It is bright.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (8)
1. a kind of speed acquisition device, which is characterized in that the device includes: speed signal acquisition module, with the signal acquisition
The connected signal conditioning module of module, the signal processing module being connected with the signal conditioning module, and at the signal
Manage the connected signal computing module of module, wherein
The speed signal acquisition module, for sending out the sine wave speed signal of collected vent external magneto-electric encoder
Give the signal conditioning module；
The signal conditioning module obtains conditioned signal, and be sent to for improving the sine wave speed signal received
The signal processing module；
The signal processing module obtains the processing signal comprising frequency information for handling the conditioned signal received,
And the processing signal comprising frequency information is sent to the signal computing module, the signal processing module includes voltage
Acquisition and A/D converter circuit, sluggish pulse generation circuit and signal isolation circuit, the signal isolation circuit include the first letter
Number isolation circuit and second signal isolation circuit, wherein
The voltage acquisition and the input terminal of A/D converter circuit are connected with the output end of the signal conditioning module, and the voltage is adopted
Collection and the output end of A/D converter circuit connect one end of first signal isolation circuit, first signal isolation circuit it is another
One end is connect with the first input end of the signal computing module；
The input terminal of the sluggishness pulse generation circuit is connected with the output end of the signal conditioning module, and the sluggishness pulse is raw
One end of the second signal isolation circuit, the other end of the second signal isolation circuit and institute are connected at the output end of circuit
State the second input terminal connection of signal computing module；
The signal computing module obtains frequency values for calculating according to the processing signal comprising frequency information, and passes through
Motor speed is calculated in the frequency values.
2. the apparatus according to claim 1, which is characterized in that the signal conditioning module includes bleeder circuit, and described
Bleeder circuit connected protection clamp and filter circuit, and the gain circuitry being connected with the protection clamp and filter circuit,
Wherein,
The bleeder circuit, for carrying out decompression processing to the sine wave speed signal received, after being depressured
One sine wave speed signal, and the primary sinusoid signal is sent to the protection clamp and filter circuit；
The protection clamp and filter circuit, the primary sinusoid signal for will receive carry out after being converted to stable signal
The filtering of signal improves to obtain the first conditioned signal, and first conditioned signal is sent to the gain circuitry；
The gain circuitry obtains the conditioning letter for the first conditioned signal received being fixed the amplification of gain
Number, and it is sent to the signal processing module.
3. the apparatus of claim 2, which is characterized in that the protection clamp and filter circuit include protection clamp electricity
Road, and the filter circuit being connected with the protecting clamper, wherein
The protecting clamper obtains stable for inhibiting the primary sinusoid speed signal to generate high pressure amplitude
One sine wave signal, and it is sent to the filter circuit；
The filter circuit obtains described for eliminating the high-frequency noise in the stable primary sinusoid speed signal
One conditioned signal, and it is sent to the gain circuitry.
4. the apparatus according to claim 1, which is characterized in that the voltage acquisition and A/D converter circuit, for acquiring
The sine waveform of conditioned signal is stated, and is converted to the sine wave signal of low amplitude value, and the sine wave of the low amplitude value is believed
First signal isolation circuit is sent to after number being converted to digital signal；
The sluggishness pulse generation circuit, the sine wave for acquiring the conditioned signal, which is generated, obtains digit pulse comprising frequency values
Square-wave signal, and obtain digit pulse square-wave signal comprising frequency values by described and be sent to the second signal isolation circuit；
First signal isolation circuit, the corresponding number of sine wave signal for the low amplitude value that insulation blocking receives
Signal, the second signal isolation circuit, for insulation blocking receive described in comprising frequency values digit pulse square wave believe
Number, by first signal isolation circuit and the second signal isolation circuit, obtain the processing comprising frequency information
The processing signal comprising frequency information is sent to the signal computing module by signal.
5. a kind of speed acquisition method, which is characterized in that the method is suitable for speed described in claim 1-4 any one
Acquisition device, the speed acquisition device include speed signal acquisition module, signal conditioning module, signal processing module and signal
Computing module, wherein the signal processing module includes voltage acquisition and A/D converter circuit, sluggish pulse generation circuit and letter
Number isolation circuit, the signal isolation circuit include the first signal isolation circuit and second signal isolation circuit, this method comprises:
The sine wave speed signal of collected vent external magneto-electric encoder is sent to by the speed signal acquisition module
The signal conditioning module；
The signal conditioning module improves the sine wave speed signal received, obtains conditioned signal, and is sent to described
Signal processing module；
The signal processing module handles the conditioned signal received, obtains the processing signal comprising frequency information, and will
The processing signal comprising frequency information is sent to the signal computing module；
The signal computing module calculates according to the processing signal comprising frequency information and obtains frequency values, and passes through the frequency
Motor speed is calculated in rate value.
6. according to the method described in claim 5, it is characterized in that, the signal conditioning module includes bleeder circuit, protection pincers
Position and filter circuit and gain circuitry, wherein the signal conditioning module improves the sine wave speed signal received
Conditioned signal is converted to, and is sent to the signal processing module and includes:
The bleeder circuit carries out decompression processing to the sine wave speed signal received, and first after being depressured is sinusoidal
Wave velocity signal, and the primary sinusoid signal is sent to the protection clamp and filter circuit；
The primary sinusoid signal that the protection clamp and filter circuit will receive carries out signal after being converted to stable signal
Filtering improve to obtain the first conditioned signal, first conditioned signal is sent to the gain circuitry；
The gain circuitry the first conditioned signal received is fixed the amplification of gain, obtains the conditioned signal, and
It is sent to the signal processing module.
7. according to the method described in claim 6, it is characterized in that, protection clamp and filter circuit include protection clamp electricity
Road and filter circuit, wherein the primary sinusoid signal that the protection clamp and filter circuit will receive carries out conditioning conversion
For the first conditioned signal, and it is sent to the gain circuitry, comprising:
The protecting clamper inhibits the primary sinusoid speed signal to generate high pressure amplitude, and it is sinusoidal to obtain stable first
Wave signal, and it is sent to the filter circuit；
The filter circuit eliminates the high-frequency noise in the stable primary sinusoid speed signal, obtains first conditioning
Signal, and it is sent to the gain circuitry.
8. according to the method described in claim 5, it is characterized in that, the signal processing module handles the conditioning received
Signal obtains the processing signal comprising frequency information, and the processing signal comprising frequency information is sent to the signal
Computing module, comprising:
The voltage acquisition and A/D converter circuit, acquire the sine waveform of the conditioned signal, and are converted to low amplitude value
Sine wave signal, and the first signal isolation electricity is sent to after the sine wave signal of the low amplitude value is converted to digital signal
Road；
The sluggishness pulse generation circuit, the sine wave for acquiring the conditioned signal, which is generated, obtains digit pulse square wave comprising frequency values
Signal, and obtain digit pulse square-wave signal comprising frequency values by described and be sent to the second signal isolation circuit；
First signal isolation circuit, the corresponding number letter of the sine wave signal for the low amplitude value that insulation blocking receives
Number, the second signal isolation circuit, the digit pulse square-wave signal comprising frequency values that insulation blocking receives passes through
First signal isolation circuit and the second signal isolation circuit obtain the processing signal comprising frequency information, will
The processing signal comprising frequency information is sent to the signal computing module.
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| CN107064541A (en) * | 2017-05-19 | 2017-08-18 | 武汉锐华电气有限公司 | A kind of many executing agency's speed measuring systems |
| CN107894242A (en) * | 2017-10-26 | 2018-04-10 | 桐城市闲产网络服务有限公司 | A kind of sensor signal processing system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2759059Y (en) * | 2004-12-28 | 2006-02-15 | 比亚迪股份有限公司 | Wheel speed signal sensor |
| CN103487598A (en) * | 2013-10-15 | 2014-01-01 | 湖南湘依铁路机车电器股份有限公司 | Multi-channel locomotive speed measurement hall revolution speed transducer and installation method thereof |
| CN203705467U (en) * | 2013-11-28 | 2014-07-09 | 陕西千山航空电子有限责任公司 | Acquisition circuit of airborne frequency signal |
| CN104330583A (en) * | 2014-10-28 | 2015-02-04 | 陕西千山航空电子有限责任公司 | Aircraft engine rotating speed signal acquisition circuit |
-
2016
- 2016-08-16 CN CN201610675650.5A patent/CN106248986B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2759059Y (en) * | 2004-12-28 | 2006-02-15 | 比亚迪股份有限公司 | Wheel speed signal sensor |
| CN103487598A (en) * | 2013-10-15 | 2014-01-01 | 湖南湘依铁路机车电器股份有限公司 | Multi-channel locomotive speed measurement hall revolution speed transducer and installation method thereof |
| CN203705467U (en) * | 2013-11-28 | 2014-07-09 | 陕西千山航空电子有限责任公司 | Acquisition circuit of airborne frequency signal |
| CN104330583A (en) * | 2014-10-28 | 2015-02-04 | 陕西千山航空电子有限责任公司 | Aircraft engine rotating speed signal acquisition circuit |
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