CN201229500Y - Infrared remote control apparatus for XY precision workstation - Google Patents

Abstract

The utility model relates to an infrared telequipment of an XY precision working table, which comprises a stepper motor drive circuit, a mechanical device, an infrared remote controller, an infrared receiving and decoding circuit, wherein the infrared controller can transmit five control orders of X shaft advancing, X shaft receding, Y shaft advancing, Y shaft receding and the operation stopping, an infrared remotely controlled circuit which is adopted can effectively insulate the electrical interference, compared with a traditional wireless electrical remotely controlled circuit, the device has simple circuit, can effectively prevent the electrical interference of working fields and can guarantee the reliability of the remote control operation better.

Description

XY precision stage infrared remote-control device

Technical field

The utility model relates to a kind of mechanical motion control field, particularly a kind of XY precision stage infrared remote-control device.

Background technology

Detect at precision optical machinery, the calibration of optical instrument light path, fields such as integrated chip assembling, tomography ray scanning, XY two degrees of freedom precision stage has important application.Precision stage is relatively harsher to environment requirement, except humiture requires, does not also allow operating personnel to walk up and down near worktable, in order to avoid generation vibration and dust influence the operating accuracy of worktable.At present, the XY precision stage to be adopted manually or computer field control, and operating personnel need closely operation element platform.

Summary of the invention

The utility model is the problem of environment requirement harshness and operating personnel closely being operated contradiction at existing precision stage, a kind of XY precision stage infrared remote-control device has been proposed, utilize the straighforward operations such as advancing, retreat, start, stop of the method realization worktable of infrared remote control, reduce the influence of ambient vibration worktable.In addition, owing to adopt infrared remote control, compare with general wireless remote control, can effectively avoid the working site electrical Interference, the reliability of straighforward operation has assurance preferably.

The technical solution of the utility model is: a kind of XY precision stage infrared remote-control device, comprise stepper motor driving circuit, mechanical hook-up, also comprise Infrared remote controller, infrared reception and decoding scheme, Infrared remote controller can be sent X-axis and advance, X-axis retreats, Y-axis is advanced, Y-axis retreats, motion stops 5 kinds of steering orders, steering order is outwards launched with infrared pulse, infrared reception and decoding scheme carry out demodulation with the infrared pulse modulating wave that receives, conditioning, and output single-chip microcomputer " 0 " that can receive, " 1 " signal, signal enters in the stepper motor driving circuit, and single-chip microcomputer sends the step motor control signal respectively the directions X in the drive mechanism and the leading screw of Y direction rotate in the stepper motor driving circuit under the support of embedded software.

The infrared coding chip adopts special chip PT2262-IR that described 5 kinds of basic controlling instruction of worktable is encoded in the described Infrared remote controller.Described infrared coding chip output serial pulse signal, the amplification of the Darlington transistor that constitutes through two-stage C1815 NPN type triode is lighted or is extinguished infrarede emitting diode SE303, outwards firing order with the speed of 38KHz.Infrared coding chip adopts the PT2272-M6 that mates with PT2262-IR infrared coding chip as infrared coding chip in described infrared reception and the decoding scheme.

The beneficial effects of the utility model are: the utility model adopts the mode of infrared remote control, can isolate electrical Interference effectively; The more traditional radio remote-controlled circuit of the infrared remote controller that adopts is simple, can effectively avoid the working site electrical Interference, and the reliability of straighforward operation has preferably and guarantees.

Description of drawings

Fig. 1 is the utility model XY precision stage infrared remote-control device theory diagram;

Fig. 2 is the utility model XY precision stage infrared remote-control device infrared encoder circuit diagram;

Fig. 3 is the infrared decoding scheme of the utility model XY precision stage infrared remote-control device;

Fig. 4 is the utility model XY precision stage infrared remote-control device XY shaft step motor driving circuit figure.

Embodiment

XY precision stage infrared remote-control device theory diagram as shown in Figure 1, Infrared remote controller 1 can be sent X-axis and advance, X-axis retreats, Y-axis is advanced, Y-axis retreats, motion stops 5 kinds of steering orders, steering order is outwards launched with the infrared pulse of the general 38KHZ of industry, the infrared pulse modulating wave that infrared reception and decoding scheme 2 are responsible for receiving carries out demodulation, processing such as conditioning, and output single-chip microcomputer " 0 " that can receive, " 1 " signal, signal enters in the stepper motor driving circuit 3, single-chip microcomputer under the support of embedded software, send the step motor control signal respectively the directions X in the drive mechanism 4 and the leading screw of Y direction rotate, finally drive worktable and move by telecommand.

The infrared encoder circuit diagram adopts infrared coding special chip PT2262-IR that 5 kinds of basic controlling instructions of worktable are encoded as shown in Figure 2.This encoding scheme is compared with general single-chip microcomputer coding method, has the advantages that circuit is simple and direct, need not software programming, reliable operation.Table 1 has provided the coding situation of remote controller key.

Table 1 worktable remote controller key coding

Wherein, 5 bit data code words are meant the D0 of PT2262-IR chip, D1, D2, D3, the height of D4 pin level.Illustrate: when " X-axis is advanced " button of pressing telepilot (the SW0 button among the corresponding circuits figure), then D0 connects the positive pole of battery, and D0 is put height " 1 ".And D1, D2, D3, D4 keep original state-low level " 0 ", so corresponding code word data is 00001.What deserves to be mentioned is that when button was pressed, the VCC pin of PT2262-IR (No. 18 pins) could pass through the positive pole that diode IN4148 connects battery, enters duty.At ordinary times, VCC pin no power, not power consumption of PT2262-IR is particularly suitable for battery powered occasion.

Except the coding of finishing instruction, telepilot also must be gone out transmitting instructions.Aspect transmitting instructions, have two problems to merit attention: (1) carrier wave is selected problem: the code word data of the baseband format that we must be such with " 00001 " is loaded on the high frequency carrier, so that improve the infrared communication distance.In the utility model, that we adopt is the general 38KHz of industry.38KHZ both can satisfy the Frequency Response of general 940nm infrared receiving terminal (the utility model select for use be HS0038), can reduce infrared interference of noise such as sunshine in the environment again effectively.Realization means in this example are: at PT2262-IR No. 15 connect resonant resistance between No. 16 pins.Typical case's resistance is between 430K Ω-470K Ω, by adjusting the size of resistance, infrared carrier frequency can be set in level (2) the matching addresses problem about 38KHz: consider that the infrared remote control equipment that has a plurality of 38KHz works at the same time, for fear of interference, the serial pulse signal of launching also must add the address code word of equipment at head except comprising basic " " 00001 " " code word data.Realization means in this example are: PT2262-IR address pins A0 is set, A1, A2, A3, A4, the state of A5.A0, A1, A2, A3, A4, A5 can be provided with three state respectively: " 1 " (connecing anode), " 0 " (connecing battery cathode) and unsettled.So, can produce 3 the individual address code of 6 powers (729) in theory.For simplicity, we are A0, A1, A2, A3, A4, the whole resets of A5.

Below, provide the detailed operation process that " X-axis is advanced " button is pressed the back telepilot in conjunction with Fig. 2:

(1) SW0 button closure, the IN4148 diode current flow that is attached thereto.

(2) PT2262-IR chip power (No. 18 VCC pins are communicated with the positive pole of battery) work.Simultaneously, the D0 pin is put height, produces code word data " 00001 ".

(3) code word data adds that corresponding address code word passes through No. 17 DOUT pins output with the serial pulses of 38KHz.

(4) amplification of the Darlington transistor that constitutes by two-stage C1815NPN type triode is again lighted or is extinguished infrared diode SE303, outwards firing order with the speed of 38KHz

(5) red-light LED of connecting with SE303 plays the effect (because human eye can't be seen the bright dark of infrarede emitting diode) of indication.

(6) course of work of other button is similar with it.

Infrared as shown in Figure 3 decoding scheme has adopted infrared decoding special chip PT2272-L6 to decipher, and greatly reduces the software programming workload.The A0 of PT2272-L6, A1, A2, A3, A4,6 equal resets of address wire such as A5 so that with the PT2262-IR matching addresses of telepilot end.15, No. 16 external oscillation resistances of pin, representative value is 1M Ω.HS0038 is the infrared reception integrated module of 38KHz.The serial base band pulse that is used for receiving the 38KHz that telepilot sends is modulated infrared.For improving antijamming capability, the pull-up resistor of 10K Ω and the decoupling capacitor of 0.1uF have been added.HS0038 is " low level activation " working method, and for convenience of later programmed, also in order to amplify the output signal of OUT pin, the output signal of OUT pin is through C1815 transistor upset amplification simultaneously.No. 14 pins (DIN) are the serial data input end, if the serial data that receives effectively (address code word coupling, code word data does not have omission etc.) then 17 pin level put height, light green light LED and be used for indication.The net result (5 bit data code word) of decoding passes through D0, D1, and D2, D3, the output of D4 port is used S0 at this, S1, S2, S3, S4, expression.In addition, PT2272-L6 has the data latching function.That is: when disappearing when transmitting, D0, D1, D2, D3, the D4 output terminal still keeps original state, receives new steering order up to next time.

5 successfully decoded code word datas connect 5 road I/O port: the P1.0 of single chip computer AT 89LP216, P1.1, P1.4, P1.6, P1.5 respectively.AT89LP216 exports 4 tunnel control signals: X_DIR, X_PULSE, Y_DIR, Y_PULSE (corresponding PWM1, P3,0, PWM2, P3.1 port), control the direction and the rotating speed of X-axis stepper motor respectively, and the direction of Y-axis and rotating speed, corresponding relation between the two sees Table 2.Can utilize Keil C51 to carry out software programming in view of the above easily.Wherein, 2000Hz represents the frequency of the square wave of dutycycle 50%.The step angle of supposing stepper motor is 1.8 degree, and then rotating speed of motor is 10 revolutions per seconds (because the output shaft of stepper motor is connected with the wheel box of 4:1, the rotating speed of leading screw is 2.5 revolutions per seconds).Square wave frequency can utilize software setting as required.

Table 2. code word data and controller output signal

XY shaft step motor driving circuit figure as shown in Figure 4, the reliable two-phase of worktable X-axis and y-axis stepper motor selection work is mixed stepper motor, model unanimity.1,2,3, No. 4 pins of slot JP1 and JP2 connect the A of stepper motor respectively ⁺, A ^-, B ⁺, B ^-Terminal.

X_DIR, X_PULSE, Y_DIR, Y_PULSE is stepper motor 4 tunnel control signals of single chip computer AT 89LP216 output.Wherein,

(1) X_DIR:X direction of principal axis control signal.For clockwise rotating, " 0 " is for rotating counterclockwise " 1 ".

(2) X_PULSE:X axle movement velocity control wave.Pulsed frequency is directly proportional with motor speed, and reset then stops.

(3) Y_DIR:Y direction of principal axis control signal.For clockwise rotating, " 0 " is for rotating counterclockwise " 1 ".

(4) Y_PULSE:Y axle movement velocity control wave.Pulsed frequency is directly proportional with motor speed, and reset then stops.

74HC07AP is that oppisite phase data latchs chip.L293D is that two-phase is mixed the step motor drive special chip, and wherein VCC1 is the 5V logic level, and VCC2 is a 24V stepper motor operating voltage.In order to reduce electrical Interference, we utilize optical coupler to connect (not drawing among Fig. 4) between 74HC07AP and L293D.For overanxious power supply medium-high frequency composition,, be connected the decoupling capacitor of 0.1uF and 1uF between VCC2 and the ground respectively at VCC1.Experiment shows that the accessible effective control distance in the space of this Infrared remote controller is about 9 meters.Be example with control " X-axis is advanced " below, the course of work of stepping motor control circuit shown in Figure 4 be described:

(1) if decode successfully, then infrared code translator output " 00001 " code word data.According to the listed agreement of table 2, the X_DIR set, X_PULSE is the 2000HZ pulse.Y_PULSE reset (y-axis motor stops operating).

(2) X_DIR latchs through 74HC07AP is anti-phase, the IN1 of L293D, IN2, IN3, the reset respectively of IN4 pin, " 1 ", " 1 ", " 0 ".

(3) EN1.2 of L293D, EN3.4 connects the pulse signal of 2000HZ.

(4), drive the X-axis stepper motor and clockwise rotate according to the logical definition of L293D chip.

(5) final, clockwise rotating of X-axis stepper motor is converted into the X of worktable at the uniform velocity advancing through shaft coupling and ball-screw nut mechanism.

(6) implementation of other movement instruction is similar with (1)-(5).

Claims (4)

1, a kind of XY precision stage infrared remote-control device, comprise stepper motor driving circuit, mechanical hook-up, it is characterized in that, also comprise Infrared remote controller, infrared reception and decoding scheme, Infrared remote controller can be sent X-axis and advance, X-axis retreats, Y-axis is advanced, Y-axis retreats, motion stops 5 kinds of steering orders, steering order is outwards launched with infrared pulse, infrared reception and decoding scheme carry out demodulation with the infrared pulse modulating wave that receives, conditioning, and output single-chip microcomputer " 0 " that can receive, " 1 " signal, signal enters in the stepper motor driving circuit, and single-chip microcomputer sends the step motor control signal respectively the directions X in the drive mechanism and the leading screw of Y direction rotate in the stepper motor driving circuit under the support of embedded software.

According to claim 1XY precision stage infrared remote-control device, it is characterized in that 2, the infrared coding chip adopts special chip PT2262-IR that described 5 kinds of basic controlling instruction of worktable is encoded in the described Infrared remote controller.

3, according to the described XY precision stage of claim 2 infrared remote-control device, it is characterized in that, described infrared coding chip output serial pulse signal, the amplification of the Darlington transistor that constitutes through two-stage C1815NPN type triode, light or extinguish infrarede emitting diode SE303 with the speed of 38KHz, outwards firing order.

According to the described XY precision stage of claim 2 infrared remote-control device, it is characterized in that 4, infrared coding chip adopts the PT2272-M6 that mates with PT2262-IR infrared coding chip as infrared coding chip in described infrared reception and the decoding scheme.

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