CN109520529A - Encoder head and encoder - Google Patents
Encoder head and encoder Download PDFInfo
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- CN109520529A CN109520529A CN201811641267.3A CN201811641267A CN109520529A CN 109520529 A CN109520529 A CN 109520529A CN 201811641267 A CN201811641267 A CN 201811641267A CN 109520529 A CN109520529 A CN 109520529A
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- signal
- unit
- output end
- processor
- induction chip
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/249—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using pulse code
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2612—Data acquisition interface
Abstract
The embodiment of the invention provides a kind of encoder head and encoders, encoder head, including the first induction chip, the second induction chip, signal processing circuit, processor and bus interface, wherein: the first induction chip, for generating position signal, and output end is connected to the input terminal of signal processing circuit；Signal processing circuit, for pre-processing to position signal, and output end is connected to the first input end of processor；Second induction chip is used for build environment signal, and output end is connected to the second input terminal of processor；Processor, for being finely divided processing to environmental signal and by pretreated position signal；Bus interface is connected to the output end of processor, and by Jing Guo processor Subdividing Processing position signal and environmental signal be output to external bus.The embodiment of the present invention realizes precision and the high precision ints demand such as advanced optimizes and correct by the integrated subdivision function of processor and calibration function and directly progress bus output.
Description
Technical field
The present embodiments relate to encoder fields, more specifically to a kind of encoder head and encoder.
Background technique
Encoder is a kind of angle measurement unit, and especially in closed-loop control, encoder has become motor, is especially watched
Take the important speed and position feedback transducer of motor.Existing encoder head generally uses the standard component of outsourcing, in order to
With controller, standard component generally uses square wave to export, but precision is relatively low.If using analog output, it is also necessary to which client is attached
Refinement divides box or additional controller collection at subdivision function.
With industrial automation fast development, existing encoder head technology also increasingly can not meet automation to volume
The growth requirement of code device.According to standard component, then function is fixed, and optional function is few, for example temperature sensing, the parameter of electric machine are default
Etc. functions cannot achieve.Do not have bus communication function, limits the bus development of encoder, can not meet automation to coding
Device intelligence demand.The high-precision software and hardware of encoder advanced optimizes and imports high-precision correction and all cannot achieve, limit
Encoder high precision int demand is made.The additional origin signal of encoder causes read head volume to become larger, and complex process hinders coding
Device Miniaturization Design.
Summary of the invention
The embodiment of the present invention provides a kind of encoder head and encoder, it is intended to solve existing encoder head using mark
Quasi- part is exported for matching controller using square wave, and precision is relatively low；Using analog output, it is also necessary to the additional subdivision of client
Box or additional controller collection are at subdivision function；Function is fixed, and optional function is few；Do not have bus communication function, limits
The bus of encoder develops, and can not meet automation to encoder intelligence demand；The additional origin signal of encoder leads to read head
The problems such as volume becomes larger, complex process, hinders encoder Miniaturization Design.
The technical solution that the embodiment of the present invention solves above-mentioned technical problem is to provide a kind of encoder head, including first
Induction chip, the second induction chip, signal processing circuit, processor and bus interface, and first induction chip, second
Induction chip, signal processing circuit, processor and bus interface are integrated on same circuit board, in which:
First induction chip, for generating position signal, and the output end of first induction chip is connected to institute
State the input terminal of signal processing circuit；
The signal processing circuit, for pre-processing to the position signal, and the signal processing circuit is defeated
Outlet is connected to the first input end of the processor；
Second induction chip is used for build environment signal, and the output end of second induction chip is connected to institute
State the second input terminal of processor；
The processor, for being finely divided processing to the environmental signal and by pretreated position signal；
The bus interface is connected to the output end of the processor, and by the position signal Jing Guo processor Subdividing Processing
External bus is output to environmental signal.
In encoder head described in the embodiment of the present invention, first induction chip includes for generating increment signal
Increment code channel；The signal processing circuit includes comparator, and the input terminal of the comparator is connected to the first induction core
The output end of the increment code channel of piece, and for the increment signal to be converted to delta pulse signal, and the comparator is defeated
Outlet is connected to the first pin and second pin of the first input end of the processor.
In encoder head described in the embodiment of the present invention, the processor includes the first counting unit, the first modulus
Converting unit, the first subdivision unit, in which:
First counting unit, for being counted to the delta pulse signal, and first counting unit
Input terminal connects first pin, and output end is connected to first subdivision unit；
First AD conversion unit, for carrying out analog-to-digital conversion, and first mould to the delta pulse signal
The input terminal of number converting unit connects the second pin, and output end connects first subdivision unit；
First subdivision unit, it is excellent for carrying out angle to the delta pulse signal after the counting and after analog-to-digital conversion
Change Subdividing Processing, and the output end of first subdivision unit connects the bus interface.
In encoder head described in the embodiment of the present invention, first induction chip includes for generating origin signal
Origin code channel；The signal processing circuit includes operational amplifier, and the input terminal of the operational amplifier is connected to described
The output end of the origin code channel of one induction chip, and for the origin signal to be amplified processing, and the operation amplifier
The output end of device is connected to the second pin of the first input end of the processor.
In encoder head described in the embodiment of the present invention, the processor includes the second counting unit, the second modulus
Converting unit, the second subdivision unit, in which:
Second counting unit, for being counted to the origin signal after the enhanced processing, and second meter
The input terminal of counting unit connects first pin, and output end is connected to second subdivision unit；
Second AD conversion unit, for carrying out analog-to-digital conversion, and institute to the origin signal after the enhanced processing
The input terminal for stating the second AD conversion unit connects the second pin, and output end connects second subdivision unit；
Second subdivision unit is thin for carrying out origin optimization to the origin signal after the counting and after analog-to-digital conversion
Divide processing, and the output end of second subdivision unit connects the bus interface.
In encoder head described in the embodiment of the present invention, second induction chip includes for obtaining temperature signal
Temperature sense chip, the processor includes third AD conversion unit, third subdivision unit, in which:
The third AD conversion unit, for carrying out analog-to-digital conversion to the temperature signal, and the third modulus turns
The input terminal for changing unit connects the second input terminal of the processor, and output end connects the third subdivision unit；
The third subdivision unit, for carrying out temperature optimization Subdividing Processing to the temperature signal after the analog-to-digital conversion,
And the output end of the third subdivision unit connects the bus interface.
In encoder head described in the embodiment of the present invention, the processor includes that parameter acquiring unit and correction are single
Member, in which:
The parameter acquiring unit, for obtaining externally input parameter information, the parameter by the bus interface
Information includes correction parameter；And the output end of the parameter acquiring unit connects the correction unit；
The correction unit, for according to the correction parameter to after the subdivision position signal and environmental signal carry out
Correction；And the output end of the correction unit connects the bus interface.
In encoder head described in the embodiment of the present invention, the parameter information further includes motor parameter preset, described
Processor is finely divided processing according to the motor parameter preset to the environmental signal and by pretreated position signal.
In encoder head described in the embodiment of the present invention, first induction chip is one of the following: Magnetic Sensor,
Optical sensor, capacitance type sensor or inductance type transducer, and first induction chip include primary key road, vernier code channel and
Segment encode road.
The embodiment of the present invention also provides a kind of encoder, including encoder head as described above.
Encoder head and encoder provided in an embodiment of the present invention, which have the advantages that, realizes reading by processor
Head is internally integrated the function of additional micro-stepping control device and calibration function and directly carries out bus output and need to pass through when in use
The functions such as parameter setting can be realized in bus connection host computer, without interconnecting device, reduce switching device and make to encode
Device function customizable realizes precision and the high precision ints demand such as advanced optimizes and correct.
Detailed description of the invention
Fig. 1 is the first embodiment schematic diagram of encoder head provided by the invention；
Fig. 2 is the second embodiment schematic diagram of encoder head provided by the invention；
Fig. 3 is the 3rd embodiment schematic diagram of encoder head provided by the invention.
Specific embodiment
In order to which the objects, technical solutions and advantages of the embodiment of the present invention are more clearly understood, below in conjunction with attached drawing and reality
Example is applied, the embodiment of the present invention is further elaborated.It should be appreciated that specific embodiment described herein is only used to
It explains the embodiment of the present invention, is not intended to limit the present invention embodiment.
As shown in Figure 1, being the first embodiment schematic diagram of encoder head provided by the invention, which is applicable in
In motor closed-loop control, the encoder head of the embodiment of the present invention, including the first induction chip 1, the second induction chip 2, signal
Processing circuit 3, processor 4 and bus interface 5, and the first induction chip 1, the second induction chip 2, signal processing circuit 3, place
Reason device 4 and bus interface 5 are integrated on same circuit board (i.e. the first induction chip 1, the second induction chip 2, signal processing electricity
Road 3, processor 4 and bus interface 5 are located in same housing).Wherein: the first induction chip 1, for generating position signal,
And first the output end of induction chip 1 be connected to the input terminal of signal processing circuit 3；Signal processing circuit 3, for aligning confidence
It number is pre-processed, and the output end of signal processing circuit 3 is connected to the first input end of processor 4；Second induction chip 2,
Output end for build environment signal, and the second induction chip 2 is connected to the second input terminal of processor 4；Processor 4 is used
In being finely divided processing to environmental signal and by pretreated position signal；Bus interface 5 is connected to the output of processor 4
End, and by Jing Guo processor Subdividing Processing position signal and environmental signal be output to external bus.
Encoder head provided in an embodiment of the present invention realizes that read head is internally integrated additional micro-stepping control device by processor
Function and directly carry out bus output, when in use, only need to by bus connect host computer the function such as parameter setting can be realized
Can, without interconnecting device, reduces switching device and make encoder functionality customizable, realize precision and advanced optimize
Equal high precision ints demand.
Specifically, as shown in Fig. 2, above-mentioned first induction chip 1 includes the increment code channel 11 for generating increment signal；Letter
Number processing circuit 3 includes comparator 31, and the input terminal of comparator 31 is connected to the output of the increment code channel 11 of the first induction chip 1
End, and for increment signal to be converted to delta pulse signal, and the output end of comparator 31 is connected to the first defeated of processor 4
Enter first pin (QEP pin, Quadrature Encoder Pulse, quadrature coding pulse in Fig. 2) and second pin at end
(ADC1 pin in Fig. 2, Analog-to-Digital Converter, analog/digital converter).
Above-mentioned processor 4 includes the first counting unit 401, the first AD conversion unit 402, the first subdivision unit 403,
In: the first counting unit 401, for being counted to delta pulse signal, and the input terminal connection the of the first counting unit 401
One pin, output end are connected to the first subdivision unit 403.First AD conversion unit 402, for being carried out to delta pulse signal
Analog-to-digital conversion, and the input terminal of the first AD conversion unit 402 connects second pin, output end connects the first subdivision unit 401.
First subdivision unit, for carrying out orientation optimization Subdividing Processing, and the to the delta pulse signal after counting and after analog-to-digital conversion
The output end junctor highway interface 5 of one subdivision unit 403.
Above-mentioned first induction chip 1 includes the origin code channel 12 for generating origin signal；Signal processing circuit 3 includes fortune
Amplifier 32 is calculated, the input terminal of operational amplifier 32 is connected to the output end of the origin code channel 12 of the first induction chip 1, and is used for
Origin signal is amplified into processing, and the output end of operational amplifier 32 is connected to the second of the first input end of processor 4
Pin.
Above-mentioned processor 4 includes the second counting unit 404, the second AD conversion unit 405, the second subdivision unit 406,
In: the second counting unit 404, for being counted to the origin signal after enhanced processing, and the input of the second counting unit 405
The first pin of end connection, output end are connected to the second subdivision unit 406；Above-mentioned second AD conversion unit 405, for amplification
Origin signal that treated carries out analog-to-digital conversion, and the input terminal of the second AD conversion unit 405 connects second pin, output end
Connect the second subdivision unit 406；Above-mentioned second subdivision unit 406, for the origin signal after counting and after analog-to-digital conversion into
Row origin optimizes Subdividing Processing, and the output end junctor highway interface 5 of the second subdivision unit 406.
Above-mentioned first induction chip is also possible to other than including increment code channel and origin code channel based on M sequence random code
High-order primary key road and high-precision fine increment code channel, be also possible to primary key road, vernier code channel and segment encode based on cursor principle
Road.In addition, overall plan is not limited to specific principle of induction, Magnetic Sensor, optical sensor, capacitance type sensor can be
Or the common encoder sensing principle such as inductance type transducer.Read head can be split type independent read head, can also be through whole
Body encoder.
Above-mentioned second induction chip 2 includes temperature sense chip 21, and temperature sense chip 21 is used to obtain the work of encoder
Make environment temperature (mainly acquisition ambient temperature, do not include chip own temperature), and by temperature inversion and obtains subdivision
The temperature sense chip 21 of the temperature signal of preceding analog or digital, the temperature signal of the analog or digital of temperature sense chip 21
Both it can be obtained, can also be obtained based on the parameter setting after temperature-compensating by temperature sensing.
Above-mentioned processor 4 further includes third AD conversion unit 407, third subdivision unit 408, in which: third modulus turns
Unit 407 is changed, for carrying out analog-to-digital conversion to temperature signal, and the input terminal of third AD conversion unit 407 connects processor 4
The second input terminal, output end connect third subdivision unit 408；Third subdivision unit 408, for the temperature after analog-to-digital conversion
Signal carries out temperature optimization Subdividing Processing, and the output end junctor highway interface 5 of third subdivision unit 408.
As shown in figure 3, above-mentioned processor 4 may also include parameter acquiring unit 410 and correction unit 409, in which: parameter obtains
Unit 410 is taken, for obtaining externally input parameter information by bus interface 5, parameter information includes correction parameter；And parameter
The output end connection correction unit 409 of acquiring unit 410；Correct unit 409, for according to correction parameter to the position after subdivision
Signal and environmental signal are compared and analyze, and reach high-precision correction processing；And the output end for correcting unit 409 connects bus
Interface 5.
Encoder head provided in an embodiment of the present invention realizes that read head is internally integrated calibration function and straight by correction unit
Row bus output is tapped into, precision is realized and the high precision ints demand such as advanced optimizes and correct.
Above-mentioned parameter information further includes motor parameter preset, and processor is according to motor parameter preset to environmental signal and process
Pretreated position signal is finely divided processing.
Encoder head provided in an embodiment of the present invention can add other intelligent demands, such as chip own temperature, wet
The intelligent demands such as degree (corresponding hardware increases humidity sensor), it can its software and hardware is customized according to functional requirement.
The embodiment of the present invention also provides a kind of encoder, including encoder head as described above.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims
Subject to.
Claims (10)
1. a kind of encoder head, which is characterized in that including the first induction chip, the second induction chip, signal processing circuit, place
Manage device and bus interface, and first induction chip, the second induction chip, signal processing circuit, processor and bus
On Interface integration to same circuit board, in which:
First induction chip, for generating position signal, and the output end of first induction chip is connected to the letter
The input terminal of number processing circuit；
The signal processing circuit, for being pre-processed to the position signal, and the output end of the signal processing circuit
It is connected to the first input end of the processor；
Second induction chip is used for build environment signal, and the output end of second induction chip is connected to the place
Manage the second input terminal of device；
The processor, for being finely divided processing to the environmental signal and by pretreated position signal；
The bus interface is connected to the output end of the processor, and by the position signal and ring Jing Guo processor Subdividing Processing
Border signal is output to external bus.
2. encoder head according to claim 1, which is characterized in that first induction chip includes increasing for generating
Measure the increment code channel of signal；The signal processing circuit includes comparator, and the input terminal of the comparator is connected to described first
The output end of the increment code channel of induction chip, and for the increment signal to be converted to delta pulse signal, and the comparison
The output end of device is connected to the first pin and second pin of the first input end of the processor.
3. encoder head according to claim 2, which is characterized in that the processor includes the first counting unit, the
One AD conversion unit, the first subdivision unit, in which:
First counting unit, for being counted to the delta pulse signal, and the input of first counting unit
End connects first pin, and output end is connected to first subdivision unit；
First AD conversion unit, for carrying out analog-to-digital conversion to the delta pulse signal, and first modulus turns
The input terminal for changing unit connects the second pin, and output end connects first subdivision unit；
First subdivision unit is thin for carrying out orientation optimization to the delta pulse signal after the counting and after analog-to-digital conversion
Divide processing, and the output end of first subdivision unit connects the bus interface.
4. encoder head according to claim 2, which is characterized in that first induction chip includes for generating original
The origin code channel of point signal；The signal processing circuit includes operational amplifier, and the input terminal of the operational amplifier is connected to
The output end of the origin code channel of first induction chip, and for the origin signal to be amplified processing, and the fortune
The output end of calculation amplifier is connected to the second pin of the first input end of the processor.
5. encoder head according to claim 2, which is characterized in that the processor includes the second counting unit, the
Two AD conversion units, the second subdivision unit, in which:
Second counting unit, for counting to the origin signal after the enhanced processing, and described second counts list
The input terminal of member connects first pin, and output end is connected to second subdivision unit；
Second AD conversion unit, for carrying out analog-to-digital conversion, and described the to the origin signal after the enhanced processing
The input terminal of two AD conversion units connects the second pin, and output end connects second subdivision unit；
Second subdivision unit, for being carried out at origin optimization subdivision to the origin signal after the counting and after analog-to-digital conversion
Reason, and the output end of second subdivision unit connects the bus interface.
6. encoder head according to claim 1, which is characterized in that second induction chip includes for obtaining temperature
The temperature sense chip of signal is spent, the processor includes third AD conversion unit, third subdivision unit, in which:
The third AD conversion unit, for carrying out analog-to-digital conversion, and the third analog-to-digital conversion list to the temperature signal
The input terminal of member connects the second input terminal of the processor, and output end connects the third subdivision unit；
The third subdivision unit, for carrying out temperature optimization Subdividing Processing, and institute to the temperature signal after the analog-to-digital conversion
The output end for stating third subdivision unit connects the bus interface.
7. encoder head according to claim 1, which is characterized in that the processor includes parameter acquiring unit and school
Positive unit, in which:
The parameter acquiring unit, for obtaining externally input parameter information, the parameter information by the bus interface
Including correction parameter；And the output end of the parameter acquiring unit connects the correction unit；
The correction unit, for according to the correction parameter to after the subdivision position signal and environmental signal carry out school
Just；And the output end of the correction unit connects the bus interface.
8. encoder head according to claim 7, which is characterized in that the parameter information further includes the default ginseng of motor
Number, the processor are finely divided according to the motor parameter preset to the environmental signal and by pretreated position signal
Processing.
9. encoder head according to claim 2, which is characterized in that first induction chip is one of the following: magnetic
Sensor, optical sensor, capacitance type sensor or inductance type transducer, and first induction chip includes primary key road, trip
Coding road and segment encode road.
10. a kind of encoder, which is characterized in that including encoder head as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811641267.3A CN109520529A (en) | 2018-12-29 | 2018-12-29 | Encoder head and encoder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811641267.3A CN109520529A (en) | 2018-12-29 | 2018-12-29 | Encoder head and encoder |
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| CN109520529A true CN109520529A (en) | 2019-03-26 |
Family
ID=65797446
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811641267.3A Pending CN109520529A (en) | 2018-12-29 | 2018-12-29 | Encoder head and encoder |
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| CN110243401A (en) * | 2019-07-26 | 2019-09-17 | 浙江禾川科技股份有限公司 | The decoding apparatus of the photocell of optical encoder and optomagnetic encoder |
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