CN1564095A - Multishaft motion control card based on RS-232 serial bus - Google Patents
Multishaft motion control card based on RS-232 serial bus Download PDFInfo
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- CN1564095A CN1564095A CN 200410017112 CN200410017112A CN1564095A CN 1564095 A CN1564095 A CN 1564095A CN 200410017112 CN200410017112 CN 200410017112 CN 200410017112 A CN200410017112 A CN 200410017112A CN 1564095 A CN1564095 A CN 1564095A
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Abstract
The control card consists of control unit, switching value input unit and signal output unit. The control unit includes RS-232, quartz multivibrator, circuit for monitoring power supply; switching value input unit includes acquisition module and isolation shaping module; signal output unit includes current signal output unit and direction signal output unit. 8254 programmable chip is adopted in pulse control circuit for counting and timer. X5045 is utilized in EEPROM chip. Features of the card are: simple hardware structure, few number of pins, and no need of driving program.
Description
Affiliated technical field
The present invention relates to line transmission system, relate in particular to a kind of multi-axis motion control card based on the RS-232 universal serial bus.
Background technology
Along with manufacturing development, the trend of small batch production strengthens day by day, flexibility and versatility to numerically-controlled machine are had higher requirement, wish that city's field energy provides different process requirements, construct user oriented control system rapidly efficiently, at low cost, and reduce the cost of safeguarding and training significantly, also require digital control system of new generation to have network function easily simultaneously, with organization of production and the management mode that adapts to following workshop oriented mission and order.For this reason, over nearly 10 years, along with fast development of computer technology, the digital control system in open type of various different levels arises at the historic moment, and develops very fast.But problem of digital control system in open type ubiquity of present " NC embeds PC " structure, i.e. opening architecture motion control card.For example, in the occasion of using stepper motor, great majority all are the motion control cards that adopts Taiwan company to produce, and find in the exploitation of reality that a lot of user's requirement integrated circuit boards can't satisfy, and the performance of acceleration and deceleration is not fine, and cost is higher.
Summary of the invention
The purpose of this invention is to provide a kind of multi-axis motion control card, need not to set the just multi-axis motion control card based on the RS-232 universal serial bus of may command motor rotation of computer card based on the RS-232 universal serial bus.
The present invention is achieved in that and the present invention includes control module (1), switching value input block (2) and signal output unit (3); Wherein:
1) control module: it comprises RS-232 communication interface, quartz crystal multivibrator, electric source monitoring circuit; RS-232 communication interface one end links to each other by universal serial bus with singlechip CPU, one end links to each other with upper PC, quartz crystal multivibrator pulsing signal links to each other with programmable count/timer 8254, and power supply supervisory circuit links to each other with singlechip CPU by bus;
2) switching value input block: it comprises switch acquisition module, switching signal isolation shaping module; The switch acquisition module by limit switch and optoelectronic switch gather that outside X, Y, Z return zero, limit switch, tool setting semaphore, the switching signal isolation shaping module realizes level conversion between switching value input signal and the singlechip CPU by filtering circuit and TPL optical coupling isolation circuit;
3) signal output unit: it comprises pulse signal output circuit, voltage signal output circuit, current signal output circuit, rotating direction signal; The pulse signal output circuit links to each other with singlechip CPU by programmable count/timer 8254, and the pulsed frequency that realizes through three programmable count/timers 8254 links to each other with X, Y, Z axle driver with pulse number; The voltage signal output circuit connects electric spindle driver by the D/A change-over circuit, and the current signal output circuit connects electric spindle driver by the V/I change-over circuit; The rotating direction signal produces the rotating signal by the latch chip and offers each driver.
Characteristics of the present invention are: the concrete scheme that motion control card adopts circuit such as 89C52 single-chip microcomputer, MAX232 and programmable count/timer to combine has characteristics such as peripheral components is few, hardware configuration is simple, degree of flexibility height.In the design of control card bus of the present invention, adopt the universal serial bus mode, had the characteristics that pin number is few, connection is simple, cost is lower and system reliability is high that connect, do not needed to write simultaneously driver.In the design of programmable count/timer circuit, selected for use model be programmable count/timer circuit of 8254 as pulse control circuit, the order of reading back (writing to the control word register) that 8254 count frequency is higher and many.Select to have adopted X5045 at the chip of EEPROM, have low VCC detection and power on and power-down protection, guaranteed the operation stability of this motion control card.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a control card system global structure theory diagram;
Fig. 2 is a pulse control circuit;
Fig. 3 is a communication interface circuit;
Fig. 4 is the D/A change-over circuit;
Fig. 5 is a V/I change-over circuit schematic diagram.
Embodiment
As shown in Figure 1, the present invention includes control module 1, switching value input block 2 and signal output unit 3; Wherein:
1) control module 1: it comprises RS-232 communication interface 1.1, quartz crystal multivibrator, electric source monitoring circuit; RS-232 communication interface 1.1 1 ends link to each other by universal serial bus with singlechip CPU, one end links to each other with upper PC, quartz crystal multivibrator pulsing signal links to each other with programmable count/timer 8254, and power supply supervisory circuit links to each other with singlechip CPU by bus;
2) the switching value input block 2: it comprises switch acquisition module, switching signal isolation shaping module; The switch acquisition module by limit switch and optoelectronic switch gather that outside X, Y, Z return zero, limit switch, tool setting semaphore, the switching signal isolation shaping module realizes level conversion between switching value input signal and the singlechip CPU by filtering circuit and TPL optical coupling isolation circuit;
3) signal output unit 3: it comprises pulse signal output circuit 3.1, voltage signal output circuit 3.2, current signal output circuit 3.3, rotating direction signal; Pulse signal output circuit 3.1 links to each other with singlechip CPU by programmable count/timer 8254, and the pulsed frequency that realizes through three programmable count/timers 8254 links to each other with X, Y, Z axle driver with pulse number; Voltage signal output circuit 3.2 connects electric spindle driver by the D/A change-over circuit, and current signal output circuit 3.3 connects electric spindle driver by the V/I change-over circuit; The rotating direction signal produces the rotating signal by the latch chip and offers each driver.
Shown in Fig. 1,3, control module 1 comprises: RS-232 communication interface 1.1 is the MAX232 communication interface chip, MAX232 communication interface chip pin T1IN, T2IN, R1OUT, R2OUT connect TTL/CMOS level input pin, pin T1OUT, T2OUT, R1IN, R2IN connect RS-232C level output pin, and MAX232 communication interface chip periphery meets 4 electrochemical capacitor C1, C2, C3, C4 and decoupling capacitor C44; Electric source monitoring circuit is made up of X5045, and it comprises electrification reset, low-voltage monitoring, WatchDog Timer and serial EEPROM storer; The quartz crystal multivibrator produces pulse signal the source takes place.
Switching value input block 2 comprises: the switch acquisition module is handled by limit switch signal and photoelectric switching signal is handled and gathered outside zero, limit switch, the tool setting semaphore of returning, and the switching signal isolation shaping module is finished level conversion between optoelectronic switch, limit switch and the controller by filtering circuit and TPL optical coupling isolation circuit.
As Fig. 1, shown in 2, signal output unit 3 comprises: the data line D0～D7 of three programmable count/timers 8254 of pulse signal output circuit 3.1 links to each other with the data line AD0～AD7 of single-chip microcomputer respectively, chip selection signal CS links to each other with the address wire A10 of single-chip microcomputer, read strobe signal RD links to each other with write gate letter WR signal wire with the read strobe signal RD of single-chip microcomputer with write gate signal WR signal wire, address input line A0 and A1 select the corresponding counts device, input end of clock CLK0 links to each other with the quartz crystal multivibrator, gate input end GATE0 and GATE2 connect+the 5V power supply, the output of output terminal OUT0 is as the input of input end of clock CLK1, the output one side of output terminal OUT1 is as the input of input end of clock CLK2, as the output of pulse, the output of output terminal OUT2 is as the input of gate input end GATE1 on the other hand; Shown in Fig. 1,4, Data In-Line DI1～DI6, the msbDI7 of the analog-digital chip DAC0832 of voltage signal output circuit 3.2 links to each other with the Data In-Line AD0～AD7 of single-chip microcomputer with lsbDI0, chip selection signal CS links to each other with the address wire A14 of single-chip microcomputer with data transfer signals Xfer, the voltage output Vout that output current Iout1 and Iout2 link to each other with operational amplifier U8 and produce 0～5V; Shown in Fig. 1,5, the V/I change-over circuit of current signal output circuit 3.3 is made up of input broadband high-speed dual operational amplifier LF353JFET and peripheral circuit, the voltage of 0～5V output Vout is converted to the electric current output Iout of 4～20mA.Input broadband high-speed dual operational amplifier LF353JFET is made up of U21A, U21B, peripheral circuit is by resistance R 33, R34, R35, R36, R37, R38, R39, R40, R41, R42, R43, adjustable resistance VR2, VR3, VR4, diode D2, D3, triode T1 and voltage stabilizing diode Z10 form; The rotating signal is produced by 8 latch 74HC377 and driving tube INA2003.
As shown in Figure 1, the switch acquisition module is handled by limit switch signal and photoelectric switching signal handle gather outsidely return zero, semaphores such as limit switch, tool setting, the switching signal isolation shaping module is by the level conversion between filtering circuit and the realization of TPL optical coupling isolation circuit optoelectronic switch, limit switch and the controller; Pulse signal output unit 3.1 is linked to each other with singlechip CPU by 3 programmable count/timers 8254, and 3 8254 pulsed frequencies that produce link to each other with X, Y, Z axle driver with pulse number, control the running of 3 shaft step motors; Voltage signal output unit 3.2 is given electric spindle driver by the D/A change-over circuit, and electric spindle driver is given by the V/I change-over circuit in circuit signal unit 3.3, the running of control main shaft; The direction signal output unit produces the rotating signal by the latch chip and offers each driver, controls the rotating of each spindle motor; RS-232 communication interface 1.1 provides the rs-232 standard bus communication interface for motion control card, and RS-232 communication interface one end links to each other by universal serial bus with singlechip CPU, and an end links to each other with upper PC; The quartz crystal multivibrator provides impulse source for the pulse signal output module; Electric source monitoring circuit X5045 forms, and for system power supply voltage detects in real time, when finding voltage instability or power down, Power Monitoring Unit sends interruption to CPU, and the power down protection operation is implemented in request.
As shown in Figure 2, pulse signal output circuit of the present invention is made up of 3 8254 programmable counts/timers, produces the drive pulse signal of X, Y, three axles of Z.In view of the circuit of Y, Z axle is identical with X-axis, adopt 3.1 expression X-axis pulse signal output circuit schematic diagrams.8254 belong to programmable chip, and there are 3 independently 16 digit counters inside, and each counter has 6 kinds of working methods, can be by program setting.On this motion control card, 8254 counter 0 sum counter 1 is used for controlling the frequency of output pulse, and they work in mode 3 (square wave rate generator); Counter 2 is used for controlling the number of output pulse, and it works in mode 0 when 1 number (remembered last interrupt), and 8254 link to each other with singlechip CPU.8254 is as follows with being connected of peripheral hardware: 3 counters respectively have 3 pins in 8254: 1 clock pulse input terminal (CLK), a gate input end (GATE) and an output terminal (OUT).As shown in Figure 2, the pulse input end at counter 0 connects the quartz crystal multivibrator.The gate (GATE2) of the gate of counter 0 (GATE0) sum counter 2 connects+the 5V power supply.The output of counter 0 (OUT0) is as the pulse input (CLK1) of counter 1, the output of counter 1 (OUT1) is imported (CLK2) as the pulse of counter 2 on the one hand, be input to stepper motor driver, the running of control step motor through optical coupling isolation circuit on the other hand.Whether the output of counter 2 inputs to the input port inquiry pulse signal of CPU on the one hand and handles, on the other hand with the control signal of CPU through sending into the gate terminals (GATE1) of counter 1 with door.The principle of work of pulse control circuit is: before sending count value to each counter, earlier control line signal CTL step-down from CPU, because the frequency of output pulse is obtained through counter 0 sum counter 1 twice frequency division by the oscillation frequency of oscillatory circuit, therefore when the divide ratio of counter 0 sum counter 1 is set, should consider the reasonable distribution of two counter values, send into the number of the count value of counter 2 for the output pulse.After mode word that sets up each counter and count value, the control line signal CTL from CPU is uprised, export the pulse of required frequency from the OUT1 pin.When the level that inquires OUT2 became high level, U26A became low level through reverser, through making GATE1 pin level step-down with door U27A, forbade counter 1 counting, thereby had realized the control of pulsed frequency and pulse number.Communication interface circuit 1.1 of the present invention adopts the communication interface chip of MAX232 as system.MAX232 pin T1IN, T2IN, R1OUT, R2OUT connect TTL/CMOS level input pin, and pin T1OUT, T2OUT, R1IN, R2IN connect RS-232C level output pin.T1IN, T2IN pin meet the serial transmission pin TXD of singlechip CPU in the present invention, and R1OUT, R2OUT meet the serial received pin RXD of singlechip CPU; T1OUT, the T2OUT of Dui Ying RS-232C level connect the receiving end of a PC with it, and R1IN, R2IN connect the transmitting terminal of a PC.D/A change-over circuit 3.2 of the present invention is realized by D/A switch chip DAC0832.Adopted single buffered input mode at D/A converter of the present invention, output 0～5V voltage offers electric main shaft drives unit.Data In-Line DI1～DI6, the msbDI7 of DAC0832 links to each other with the Data In-Line AD0～AD7 of single-chip microcomputer with lsbDI0, chip selection signal CS links to each other with the address wire A14 of singlechip CPU with data transfer signals Xfer, the voltage output Vout that output current Iout1 and Iout2 link to each other with operational amplifier U8 and produce 0～5V; V/I change-over circuit 33 of the present invention has mainly adopted input broadband high-speed dual operational amplifier LF353JFET and peripheral circuit, realized the electric current output Iout conversion of voltage output Vout to 0～20mA of 0～5V, wherein import broadband high-speed dual operational amplifier LF353JFET and be made up of U21A, U21B, peripheral circuit is by resistance R 33, R34, R35, R36, R37, R38, R39, R40, R41, R42, R43; Adjustable resistance VR2, VR3, VR4; Diode D2, D3; Triode T1 and voltage stabilizing diode Z10 form.
Claims (2)
1, a kind of multi-axis motion control card based on the RS-232 universal serial bus is characterized in that comprising control module (1), switching value input block (2) and signal output unit (3); Wherein:
1) control module (1): it comprises RS-232 communication interface (1.1), quartz crystal multivibrator, electric source monitoring circuit; RS-232 communication interface (1.1) one ends link to each other by universal serial bus with singlechip CPU, one end links to each other with upper PC, quartz crystal multivibrator pulsing signal links to each other with programmable count/timer 8254, and power supply supervisory circuit links to each other with singlechip CPU by bus;
2) switching value input block (2): it comprises switch acquisition module, switching signal isolation shaping module; The switch acquisition module by limit switch and optoelectronic switch gather that outside X, Y, Z return zero, limit switch, tool setting semaphore, the switching signal isolation shaping module realizes level conversion between switching value input signal and the singlechip CPU by filtering circuit and TPL optical coupling isolation circuit;
3) signal output unit (3): it comprises pulse signal output circuit (3.1), voltage signal output circuit (3.2), current signal output circuit (3.3), rotating direction signal; Pulse signal output circuit (3.1) links to each other with singlechip CPU by programmable count/timer 8254, and the pulsed frequency that realizes through three programmable count/timers 8254 links to each other with X, Y, Z axle driver with pulse number; Voltage signal output circuit (3.2) connects electric spindle driver by the D/A change-over circuit, and current signal output circuit (3.3) connects electric spindle driver by the V/I change-over circuit; The rotating direction signal produces the rotating signal by the latch chip and offers each driver.
2, according to the described a kind of multi-axis motion control card of claim 1, it is characterized in that based on the RS-232 universal serial bus:
1) control module (1) comprising: RS-232 communication interface (1.1) is the MAX232 communication interface chip, MAX232 communication interface chip pin T1IN, T2IN, R10UT, R20UT connect TTL/CMOS level input pin, pin T10UT, T20UT, R1IN, R2IN connect RS-232C level output pin, and MAX232 communication interface chip periphery meets 4 electrochemical capacitor C1, C2, C3, C4 and decoupling capacitor C44; Electric source monitoring circuit is made up of X5045, and it comprises electrification reset, low-voltage monitoring, WatchDog Timer and serial EEPROM storer; The quartz crystal multivibrator produces pulse signal the source takes place;
2) switching value input block (2) comprising: the switch acquisition module is handled by limit switch signal and photoelectric switching signal is handled and gathered outside zero, limit switch, the tool setting semaphore of returning, and the switching signal isolation shaping module is finished level conversion between optoelectronic switch, limit switch and the controller by filtering circuit and TPL optical coupling isolation circuit;
3) signal output unit (3) comprising: the data line D0～D7 of three programmable count/timers 8254 of pulse signal output circuit (3.1) links to each other with the data line AD0～AD7 of single-chip microcomputer respectively, chip selection signal CS links to each other with the address wire A10 of single-chip microcomputer, read strobe signal RD links to each other with write gate letter WR signal wire with the read strobe signal RD of single-chip microcomputer with write gate signal WR signal wire, address input line A0 and A1 are used to select the corresponding counts device, input end of clock CLK0 links to each other with the quartz crystal multivibrator, gate input end GATE0 and GATE2 connect+the 5V power supply, the output of output terminal OUT0 is as the input of input end of clock CLK1, the output one side of output terminal OUT1 is as the input of input end of clock CLK2, as the output of pulse, the output of output terminal OUT2 is as the input of gate input end GATE1 on the other hand; Data In-Line DI1～DI6, the msbDI7 of the analog-digital chip DAC0832 of voltage signal output circuit (3.2) links to each other with the Data In-Line AD0～AD7 of single-chip microcomputer with lsbDI0, chip selection signal CS links to each other with the address wire A14 of single-chip microcomputer with data transfer signals Xfer, the voltage output Vout that output current Ioutl and Iout2 link to each other with operational amplifier U8 and produce 0～5V; The V/I change-over circuit of current signal output circuit (3.3) is made up of input broadband high-speed dual operational amplifier LF353JFET and peripheral circuit, the electric current output Iout. input broadband high-speed dual operational amplifier LF353JFET that the voltage of 0～5V output Vout is converted to 4～20mA is made up of U21A, U21B, peripheral circuit is by resistance R 33, R34, R35, R36, R37, R38, R39, R40, R41, R42, R43, adjustable resistance VR2, VR3, VR4, diode D2, D3, triode T1 and voltage stabilizing diode Z10 form; The rotating signal is produced by 8 latch 74HC377 and driving tube INA2003.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365530C (en) * | 2005-12-15 | 2008-01-30 | 山东省机电学校 | Teaching experiment system control module for mechanics of material |
| CN100541374C (en) * | 2007-08-01 | 2009-09-16 | 暨南大学 | A kind of multiple axis linkage movement controller |
| CN102402202A (en) * | 2011-10-25 | 2012-04-04 | 武汉鑫通科创科技发展有限公司 | Multi-axis motion control card based on optical fiber communication |
| CN101776875B (en) * | 2009-12-31 | 2012-05-30 | 卧龙电气集团股份有限公司 | Automatic factory test method and device for servo driver |
| CN101639682B (en) * | 2008-07-31 | 2012-08-29 | 鸿富锦精密工业（深圳）有限公司 | System and method for controlling variable motion of machine stand |
| CN107092215A (en) * | 2017-06-13 | 2017-08-25 | 浙江大学 | A kind of multi-axis motion controller |
| CN107092224A (en) * | 2017-05-31 | 2017-08-25 | 深圳市正运动技术有限公司 | Motion control card and control system |
| CN112511395A (en) * | 2020-11-06 | 2021-03-16 | 云浮中科石材创新科技有限公司 | Driving and controlling integrated control system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101546185B (en) * | 2009-04-30 | 2011-07-20 | 上海交通大学 | Programmable multi-axis controller based on IEEE-1394 serial bus |
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- 2004-03-19 CN CN 200410017112 patent/CN1258124C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365530C (en) * | 2005-12-15 | 2008-01-30 | 山东省机电学校 | Teaching experiment system control module for mechanics of material |
| CN100541374C (en) * | 2007-08-01 | 2009-09-16 | 暨南大学 | A kind of multiple axis linkage movement controller |
| CN101639682B (en) * | 2008-07-31 | 2012-08-29 | 鸿富锦精密工业（深圳）有限公司 | System and method for controlling variable motion of machine stand |
| CN101776875B (en) * | 2009-12-31 | 2012-05-30 | 卧龙电气集团股份有限公司 | Automatic factory test method and device for servo driver |
| CN102402202A (en) * | 2011-10-25 | 2012-04-04 | 武汉鑫通科创科技发展有限公司 | Multi-axis motion control card based on optical fiber communication |
| CN107092224A (en) * | 2017-05-31 | 2017-08-25 | 深圳市正运动技术有限公司 | Motion control card and control system |
| CN107092215A (en) * | 2017-06-13 | 2017-08-25 | 浙江大学 | A kind of multi-axis motion controller |
| CN107092215B (en) * | 2017-06-13 | 2019-11-05 | 浙江大学 | A kind of multi-axis motion controller |
| CN112511395A (en) * | 2020-11-06 | 2021-03-16 | 云浮中科石材创新科技有限公司 | Driving and controlling integrated control system |
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Assignee: Nanjing Yongbo CNC Technology Co., Ltd. Assignor: Zhejiang University Contract record no.: 2010330001045 Denomination of invention: Multi axis motion control card based on RS-232 serial bus Granted publication date: 20060531 License type: Exclusive License Open date: 20050112 Record date: 20100528 |
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