CN202488430U - Frequency changer and orthogonal signal processing circuit - Google Patents
Frequency changer and orthogonal signal processing circuit Download PDFInfo
- Publication number
- CN202488430U CN202488430U CN2012200278653U CN201220027865U CN202488430U CN 202488430 U CN202488430 U CN 202488430U CN 2012200278653 U CN2012200278653 U CN 2012200278653U CN 201220027865 U CN201220027865 U CN 201220027865U CN 202488430 U CN202488430 U CN 202488430U
- Authority
- CN
- China
- Prior art keywords
- high speed
- current
- photo coupling
- speed photo
- limiting resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model belongs to the field of control circuits and in particular to a frequency changer and an orthogonal signal processing circuit. The orthogonal signal processing circuit of an embodiment comprises a current-limiting resistor R1, a current-limiting resistor R2, a first high-speed optical coupler, a second high-speed optical coupler, a first shaping unit, a second shaping unit and a D trigger. Orthogonal signals output by a rotary orthogonal encoder can be separated by the high-speed optical couplers, so that interference resistance is enhanced. The orthogonal signals are resolved by the D trigger to be output a path of pulse signals which represent rotation direction and enter a core processor so as to reduce system load, achieve high compatibility and improve work efficiency.
Description
Technical field
The utility model belongs to the control circuit field, particularly relates to a kind of frequency converter and orthogonal signalling treatment circuit.
Background technology
The rotating orthogonal encoder is the device that is used for measuring rotating speed.The rotating orthogonal encoder is through opto-electronic conversion, can convert mechanical quantity such as the angular displacement of output shaft, angular speed to corresponding electric pulse, and export with digital quantity.Technical parameter mainly contains " umber of pulse of revolution " (tens to several thousand have) and supply power voltage etc.It generally is divided into single channel output and two-way is exported two kinds.Single channel output is meant that the output of rotating orthogonal encoder is set of pulses signal; And the rotary encoder of two-way output is exported the pulse signal of two groups of A/B phases phasic difference, 90 degree; Not only can measure the rotating speed of the system of rotatablely moving through this two group pulses signal, can also judge the direction of its rotation.
The rotating orthogonal encoder is widely used in all kinds of frequency converters, can accomplish to rotating speed closed-loop control and fixed length, decide angle control or the like.In the prior art; Generally the two-way orthogonal signalling of rotating orthogonal encoder output directly being sent into core processor handles through software; The processing mode of this kind orthogonal signalling can take a large amount of system resource; Power consumption is bigger, and has poor reliability, is subject to technical problems such as applied environment interference.
The utility model content
The purpose of the utility model is to provide a kind of orthogonal signalling treatment circuit, and a large amount of system resources, power consumption are big, poor reliability, be subject to technical problem such as environmental interference with taking of solving that existing orthogonal signalling treatment circuit exists.
The utility model is achieved in that
A kind of orthogonal signalling treatment circuit is connected between the output and core processor of rotating orthogonal encoder, comprises current-limiting resistance R1, current-limiting resistance R2, first high speed photo coupling, second high speed photo coupling, first shaping unit, second shaping unit and d type flip flop;
The first input end of said first high speed photo coupling connects power supply through said current-limiting resistance R1; The A phase output terminal of the second input termination rotating orthogonal encoder of said first high speed photo coupling; The input of said first shaping unit of output termination of said first high speed photo coupling, the input end of clock of the said d type flip flop of output termination of said first shaping unit;
The first input end of said second high speed photo coupling connects power supply through said current-limiting resistance R2; The B phase output terminal of the second input termination rotating orthogonal encoder of said second high speed photo coupling; The input of said second shaping unit of output termination of said second high speed photo coupling, the data input pin of the said d type flip flop of output termination of said second shaping unit.
The orthogonal signalling treatment circuit that provides through the utility model embodiment; Can the orthogonal signalling of rotating orthogonal encoder output be isolated through high speed photo coupling; Strengthen anti-interference, only export one the tunnel after decomposing through d type flip flop and represent the pulse signal of direction of rotation to get into core processor, reduced the burden of system; Realize highly compatible, improved operating efficiency.
Another purpose of the utility model is to provide a kind of frequency converter, uses above-mentioned orthogonal signalling treatment circuit on this frequency converter, and system reliability strengthens, and can realize to rotating speed closed-loop control and fixed length, decide angle control etc.
Description of drawings
Fig. 1 is the structured flowchart of the orthogonal signalling treatment circuit that provides of the utility model embodiment;
Fig. 2 is the exemplary circuit structure chart of the orthogonal signalling treatment circuit that provides of the utility model embodiment.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Fig. 1 is the structured flowchart of the orthogonal signalling treatment circuit that provides of the utility model embodiment, for ease of explanation, only shows the part relevant with present embodiment, and is as shown in the figure:
A kind of orthogonal signalling treatment circuit 100; Be connected between two output port A phases, B and the core processors 200 of rotating orthogonal encoder, comprise current-limiting resistance R1, current-limiting resistance R2, first high speed photo coupling 101, second high speed photo coupling 102, first shaping unit 103, second shaping unit 104 and d type flip flop 105;
The first input end of first high speed photo coupling 101 connects the A phase output terminal of power supply, the second input termination rotating orthogonal encoder through current-limiting resistance R1; The input of output termination first shaping unit 103 of first high speed photo coupling 101, the input end of clock of the output termination d type flip flop 105 of first shaping unit 103; The first input end of second high speed photo coupling 102 connects the B phase output terminal of power supply, the second input termination rotating orthogonal encoder through current-limiting resistance R2; The input of output termination second shaping unit 104 of second high speed photo coupling 102, the data input pin of the output termination d type flip flop 105 of second shaping unit 104; The data output end of d type flip flop 105 connects core processor 200.
Fig. 2 is the exemplary circuit structure chart of the orthogonal signalling treatment circuit that provides of the utility model embodiment, and is as shown in the figure:
Embodiment as the utility model; Said first high speed photo coupling 101 comprises current-limiting resistance R3, current-limiting resistance R4, light-emitting diode D1, photodiode D2, NPN type triode Q1 and capacitor C 1; The anode of light-emitting diode D1 and negative electrode are respectively the first input end and second inputs of first high speed photo coupling 101; Current-limiting resistance R3 is attempted by between the anode and negative electrode of light-emitting diode D1; The anode of photodiode D2 connects the base stage of NPN type triode Q1; The collector electrode of NPN type triode Q1 meets driving power VCC through current-limiting resistance R4; The collector electrode of NPN type triode Q1 and the public connecting end of current-limiting resistance R4 are as output termination first shaping unit 103 of first high speed photo coupling 101, and the negative electrode of photodiode D2 connects first end of driving power VCC and capacitor C 1 simultaneously, and the emitter of second end of capacitor C 1 and NPN type triode Q1 is ground connection all.
Embodiment as the utility model; Said second high speed photo coupling 102 comprises current-limiting resistance R5, current-limiting resistance R6, light-emitting diode D3, photodiode D4, NPN type triode Q2 and capacitor C 2; The anode of light-emitting diode D3 and negative electrode are respectively the first input end and second inputs of second high speed photo coupling 102; Current-limiting resistance R5 is attempted by between the anode and negative electrode of light-emitting diode D3; The anode of photodiode D4 connects the base stage of NPN type triode Q2; The collector electrode of NPN type triode Q2 meets driving power VCC through current-limiting resistance R6; The collector electrode of NPN type triode Q2 and the public connecting end of current-limiting resistance R6 are as output termination second shaping unit 104 of second high speed photo coupling 102, and the negative electrode of photodiode D4 connects first end of driving power VCC and capacitor C 2 simultaneously, and the emitter of second end of capacitor C 2 and NPN type triode Q2 is ground connection all.
Embodiment as the utility model; Said first shaping unit 103 comprises the Schmidt trigger T1 and the Schmidt trigger T2 of serial connection; The output of input termination first high speed photo coupling 101 of Schmidt trigger T1, the said d type flip flop 105 of the output termination of Schmidt trigger T2.
Embodiment as the utility model; Said second shaping unit 104 comprises the Schmidt trigger T3 and the Schmidt trigger T4 of serial connection; The output of input termination second high speed photo coupling 102 of Schmidt trigger T3, the said d type flip flop 105 of the output termination of Schmidt trigger T4.
Embodiment as the utility model; Said d type flip flop adopts the 74HC175 chip; The CP of the output termination 74HC175 of Schmidt trigger T2 end in first shaping unit 103; The data input pin D0 of the output termination 74HC175 of Schmidt trigger T4 in second shaping unit 104, data output end Q0 connects core processor 200.
According to the exemplary circuit structure chart that Fig. 2 provides, the A of rotating orthogonal encoder output mutually with B mutually two pulse signals import respectively in first high speed photo coupling 101 and second high speed photo coupling 102.Wherein, 90 ° mutually of the leading mutually B of A, the direction of rotation of motor is a forward so; If A falls behind 90 ° mutually of B mutually, the direction of rotation of motor then is considered to reverse so.The pulse of A phase is transferred in first shaping unit 103 that is made up of Schmidt trigger T1, T2 after first high speed photo coupling 101 is isolated interference, the CP end of input 74HC175 behind the filter shape; The pulse of B phase is transferred in second shaping unit 104 that is made up of Schmidt trigger T3, T4 after second high speed photo coupling 102 is isolated interference, the D0 end of input 74HC175 behind the filter shape.
When the direction of rotation of motor when being rotated in the forward, A exports leading B mutually and exports 90 ° mutually, B is corresponding to lag behind 90 ° mutually than A, so when the A of input CP end by low level during to the redirect of high level, importing the B that D0 holds is exactly low level mutually.Again because 74HC175 is the rising edge trigger, so when motor was rotated in the forward, the data output end Q0 of 74HC175 should continue output low level to core processor 200; When the direction of rotation of motor was reverse rotation, A phase lag output B exported 90 ° mutually, corresponding mutually leading 90 ° of B than A, so when the A of input CP end by low level during to the redirect of high level, importing the B that D0 holds is exactly high level mutually.Again because 74HC175 is the rising edge trigger, so when the motor reverse rotation, the data output end Q0 of 74HC175 should continue to export high level to core processor 200.Therefore,, only export one the tunnel and represent the signal of direction of rotation to give core processor, reduced the burden of system, improved the operating efficiency and the reliability of system through after the processing of 74HC175.
Another embodiment of the utility model also provides a kind of frequency converter; Use on this frequency converter that previous embodiment provides the orthogonal signalling treatment circuit; Reduced the power consumption of frequency convertor system, strengthened reliability, and can realize to rotating speed closed-loop control and fixed length, decide angle control etc.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection range of the utility model.
Claims (7)
1. orthogonal signalling treatment circuit; Be connected between the output and core processor of rotating orthogonal encoder; It is characterized in that said orthogonal signalling treatment circuit comprises current-limiting resistance R1, current-limiting resistance R2, first high speed photo coupling, second high speed photo coupling, first shaping unit, second shaping unit and d type flip flop;
The first input end of said first high speed photo coupling connects power supply through said current-limiting resistance R1; The A phase output terminal of the second input termination rotating orthogonal encoder of said first high speed photo coupling; The input of said first shaping unit of output termination of said first high speed photo coupling, the said d type flip flop of output termination of said first shaping unit;
The first input end of said second high speed photo coupling connects power supply through said current-limiting resistance R2; The B phase output terminal of the second input termination rotating orthogonal encoder of said second high speed photo coupling; The input of said second shaping unit of output termination of said second high speed photo coupling, the said d type flip flop of output termination of said second shaping unit.
2. orthogonal signalling treatment circuit as claimed in claim 1 is characterized in that: said first high speed photo coupling comprises current-limiting resistance R3, current-limiting resistance R4, light-emitting diode D1, photodiode D2, NPN type triode Q1 and capacitor C 1;
The anode of said light-emitting diode D1 and negative electrode are respectively the first input end and second inputs of said first high speed photo coupling; Said current-limiting resistance R3 is attempted by between the anode and negative electrode of said light-emitting diode D1; The anode of said photodiode D2 connects the base stage of said NPN type triode Q1; The collector electrode of said NPN type triode Q1 connects driving power through said current-limiting resistance R4; The collector electrode of said NPN type triode Q1 and the public connecting end of said current-limiting resistance R4 are as said first shaping unit of the output termination of said first high speed photo coupling; The negative electrode of said photodiode D2 connects first end of said driving power and said capacitor C 1 simultaneously, and the emitter of second end of said capacitor C 1 and said NPN type triode Q1 is ground connection all.
3. orthogonal signalling treatment circuit as claimed in claim 1 is characterized in that: said second high speed photo coupling comprises current-limiting resistance R5, current-limiting resistance R6, light-emitting diode D3, photodiode D4, NPN type triode Q2 and capacitor C 2;
The anode of said light-emitting diode D3 and negative electrode are respectively the first input end and second inputs of said second high speed photo coupling; Said current-limiting resistance R5 is attempted by between the anode and negative electrode of said light-emitting diode D3; The anode of said photodiode D4 connects the base stage of said NPN type triode Q2; The collector electrode of said NPN type triode Q2 connects driving power through said current-limiting resistance R6; The collector electrode of said NPN type triode Q2 and the public connecting end of said current-limiting resistance R6 are as said second shaping unit of the output termination of said second high speed photo coupling; The negative electrode of said photodiode D4 connects first end of said driving power and said capacitor C 2 simultaneously, and the emitter of second end of said capacitor C 2 and said NPN type triode Q2 is ground connection all.
4. orthogonal signalling treatment circuit as claimed in claim 1 is characterized in that: said first shaping unit comprises Schmidt trigger T1 and Schmidt trigger T2;
Said Schmidt trigger T1 and said Schmidt trigger T2 serial connection, the output of said first high speed photo coupling of input termination of said Schmidt trigger T1, the said d type flip flop of output termination of said Schmidt trigger T2.
5. orthogonal signalling treatment circuit as claimed in claim 1 is characterized in that: said second shaping unit comprises Schmidt trigger T3 and Schmidt trigger T4;
Said Schmidt trigger T3 and said Schmidt trigger T4 serial connection, the output of said second high speed photo coupling of input termination of said Schmidt trigger T3, the said d type flip flop of output termination of said Schmidt trigger T4.
6. like each described orthogonal signalling treatment circuit of claim 1-5; It is characterized in that: said d type flip flop adopts the 74HC175 chip; The input end of clock of the output termination 74HC175 of said first shaping unit; The data input pin of the output termination 74HC175 of said second shaping unit, the data output end of said 74HC175 connects core processor.
7. a frequency converter comprises the rotating orthogonal encoder, it is characterized in that, said frequency converter also comprises one like each described orthogonal signalling treatment circuit of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200278653U CN202488430U (en) | 2012-01-21 | 2012-01-21 | Frequency changer and orthogonal signal processing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200278653U CN202488430U (en) | 2012-01-21 | 2012-01-21 | Frequency changer and orthogonal signal processing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202488430U true CN202488430U (en) | 2012-10-10 |
Family
ID=46962817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200278653U Expired - Lifetime CN202488430U (en) | 2012-01-21 | 2012-01-21 | Frequency changer and orthogonal signal processing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202488430U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076527A (en) * | 2012-12-26 | 2013-05-01 | 深圳市汇川技术股份有限公司 | Incremental type encoder offline detection circuit |
| CN107231147A (en) * | 2017-05-26 | 2017-10-03 | 中国核动力研究设计院 | A kind of I2C signal generating systems |
| CN107707227A (en) * | 2016-08-03 | 2018-02-16 | 博世力士乐(西安)电子传动与控制有限公司 | Optical encoder signal input circuit and the frequency converter comprising the circuit |
| CN109355821A (en) * | 2018-09-26 | 2019-02-19 | 浙江众邦机电科技有限公司 | A kind of isolation and transmission circuit and isolation encoder system |
-
2012
- 2012-01-21 CN CN2012200278653U patent/CN202488430U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076527A (en) * | 2012-12-26 | 2013-05-01 | 深圳市汇川技术股份有限公司 | Incremental type encoder offline detection circuit |
| CN107707227A (en) * | 2016-08-03 | 2018-02-16 | 博世力士乐(西安)电子传动与控制有限公司 | Optical encoder signal input circuit and the frequency converter comprising the circuit |
| CN107707227B (en) * | 2016-08-03 | 2023-09-05 | 博世力士乐(西安)电子传动与控制有限公司 | Optical encoder signal input circuit and frequency converter comprising same |
| CN107231147A (en) * | 2017-05-26 | 2017-10-03 | 中国核动力研究设计院 | A kind of I2C signal generating systems |
| CN109355821A (en) * | 2018-09-26 | 2019-02-19 | 浙江众邦机电科技有限公司 | A kind of isolation and transmission circuit and isolation encoder system |
| CN109355821B (en) * | 2018-09-26 | 2021-02-12 | 浙江众邦机电科技有限公司 | Isolation transmission circuit and isolation encoder system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202488430U (en) | Frequency changer and orthogonal signal processing circuit | |
| CN103078575B (en) | Integrated multifunctional controller for low-power direct-current servomotors | |
| CN202205069U (en) | Analog quantity collecting module for programmable logical controller (PLC) controller | |
| CN101741304B (en) | CPLD-based multi-subdivision high-speed constant-torque controller of two-phase hybrid stepping motor | |
| CN203422097U (en) | Multifunctional networking digital shaft angle converter | |
| CN103701453A (en) | Level switching circuit used for serial communication between single-chip microcomputer and upper computer | |
| CN202503496U (en) | Level converter | |
| CN103412598B (en) | A kind of brshless DC motor hall sensor signal current conveying circuit | |
| CN202711046U (en) | Singlechip remote data acquisition system | |
| CN208971427U (en) | A kind of multi-path stepping motor driving circuit | |
| CN203573312U (en) | Motormeter communication system based on triode matching circuit | |
| CN201616802U (en) | Two-phase hybrid stepping motor constant-speed torque controller | |
| CN201184970Y (en) | Embedded board for acquiring data of watercraft engine compartment | |
| CN208399959U (en) | The control circuit of mixed signal pointer meters | |
| CN203691315U (en) | Three-phase permanent magnet synchronous motor drive circuit | |
| CN109088620B (en) | PFM modulation circuit based on data control | |
| CN201853230U (en) | USB (Universal Serial Bus) to IO (Input Output) module | |
| CN105389155A (en) | Method and system for receiving TDM audio data by using SPI interface | |
| CN205986681U (en) | String ripples conversion recoverer | |
| CN210142998U (en) | Serial port-to-optical fiber circuit for remote transmission | |
| CN214380870U (en) | Multichannel PLC high-speed counting circuit | |
| CN110995558A (en) | Battery management system compatible with CAN and daisy chain connection | |
| CN202978945U (en) | Three-phase electric energy meter communication module based on optical fiber communication mode | |
| CN204304977U (en) | A kind of photoelectric encoder signal conditioning circuit | |
| CN104007684A (en) | Universal motion control system for displacement platform |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |