Motion control system based on image measurement equipment and image measurement equipment

Abstract

The utility model discloses a motion control system based on image measurement equipment and the image measurement equipment. The system comprises a signal switching module, a joystick module, an image measurement master control module and a motor motion control module, the first input end of the signal switching module receives a digital control signal; a second input end of the signal switching module receives an analog control signal; the output end of the signal switching module is electrically connected with the input end of the operating lever module; the output end of the operating rod module is electrically connected with the input end of the image measurement main control module; the output control end of the image measurement master control module is electrically connected with the motor motion control module. According to the scheme, the motion control system is compatible with two kinds of digital control signals and analog control signals.

Description

Technical Field

[0001] The embodiments of the present utility model relate to the technical field of image measurement, and in particular to a motion control system and an image measurement device based on an image measurement device. Background Art

[0002] The motion control system is applicable to motion devices such as two-dimensional, three-dimensional, image measuring instruments, detection instruments, and multi-axis robotic arms. The image motion control system is an important part of the image measurement device. The current image motion control systems are divided into two types. One is an automatic image control system driven by a motor, and the other is a manual image control system driven purely by manual labor. In the actual application of the image measuring instrument, the positioning accuracy of the motion control directly affects the quality of the picture stitching. The manual image control system driven purely by manual labor has too low efficiency; the technical requirements of the automatic image control system are high, and the cost is high.

[0003] In the prior art, for the joystick device for automatically controlling an image measurement device, the received control signals are of two types: digital control signals and analog control signals; the corresponding output control signals are of two types: digital control conversion signals and analog control conversion signals; then the signals received by the image control system are either digital control conversion signals or analog control conversion signals at the same interface, and it is impossible to be compatible with the two input signals at the same interface. There is an urgent need for a control system that can be compatible with digital and analog dual control conversion signals at the same interface. Summary of the Utility Model

[0004] The present utility model provides a motion control system and an image measurement device based on an image measurement device, which can realize the compatibility of the control system with two digital control signals and analog control signals.

[0005] To achieve the above object, in a first aspect, the embodiments of the present utility model provide a motion control system based on an image measurement device, and the system includes: a signal switching module, a joystick module, an image measurement main control module, and a motor motion control module;

[0006] The first input end of the signal switching module receives a digital control signal; the first input end of the signal switching module receives an analog control signal; the output end of the signal switching module is electrically connected to the input end of the joystick module; the output end of the joystick module is electrically connected to the input end of the image measurement main control module; the output control end of the image measurement main control module is electrically connected to the motor motion control module.

[0007] Optionally, the signal switching module includes an X-axis single-pole double-throw analog switch chip, a Y-axis single-pole double-throw analog switch chip, and a Z-axis single-pole double-throw analog switch chip;

[0008] The selection terminal of the X-axis single-pole double-throw analog switch chip is connected to the host computer; the digital control signal receiving terminal of the X-axis single-pole double-throw analog switch chip is electrically connected to an external digital control signal output unit; the analog control signal receiving terminal of the X-axis single-pole double-throw analog switch chip is electrically connected to an external analog control signal output unit; the output terminal of the X-axis single-pole double-throw analog switch chip is electrically connected to the X-axis signal control input terminal of the joystick module;

[0009] The selection terminal of the Y-axis single-pole double-throw analog switch chip is connected to the host computer; the digital control signal receiving terminal of the Y-axis single-pole double-throw analog switch chip is electrically connected to an external digital control signal output unit; the analog control signal receiving terminal of the Y-axis single-pole double-throw analog switch chip is electrically connected to an external analog control signal output unit; the output terminal of the Y-axis single-pole double-throw analog switch chip is electrically connected to the Y-axis signal control input terminal of the joystick module;

[0010] The selection terminal of the Z-axis single-pole double-throw analog switch chip is connected to the host computer; the digital control signal receiving terminal of the Z-axis single-pole double-throw analog switch chip is electrically connected to an external digital control signal output unit; the analog control signal receiving terminal of the Z-axis single-pole double-throw analog switch chip is electrically connected to an external analog control signal output unit; the output terminal of the Z-axis single-pole double-throw analog switch chip is electrically connected to the Z-axis signal control input terminal of the joystick module.

[0011] Optionally, the system further includes: a light source control module; the image measurement main control module is electrically connected to the light source control module.

[0012] Optionally, the system further includes: a grating scale data acquisition module; the grating scale data acquisition module is electrically connected to the image measurement main control module.

[0013] Optionally, the system further includes: a power supply module; the power supply module is electrically connected to the image measurement main control module.

[0014] Optionally, the motor motion control module includes a motor speed control unit; the pulse output control terminal of the image measurement main control module is electrically connected to the pulse receiving terminal of the motor speed control unit.

[0015] Optionally, the models of the X-axis single-pole double-throw analog switch chip, the Y-axis single-pole double-throw analog switch chip, and the Z-axis single-pole double-throw analog switch chip are: SN74LVC1G3157DBVR.

[0016] Optionally, the light source control module includes a light source output voltage constant device.

[0017] Optionally, the system further includes: a 3D measurement module; the 3D measurement module is electrically connected to the image measurement main control module.

[0018] In a second aspect, an embodiment of the present invention further provides an image measuring device, which includes the motion control system and the image measuring execution structure based on the image measuring device described in the first aspect above.

[0019] In an embodiment of the present invention, a digital control signal is received through a first input end of the signal switching module; an analog control signal is received through a second input end of the signal switching module; an output end of the signal switching module is electrically connected to an input end of the joystick module; an output end of the joystick module is electrically connected to an input end of the image measuring main control module; an output control end of the image measuring main control module is electrically connected to the motor motion control module. In this way, the signal switching module can switch and select the input digital control signal and analog control signal according to the user's configuration, and output any selected control signal to the joystick module. The joystick module then converts any selected control signal into a corresponding converted control signal. The image measuring main control module thus recognizes the corresponding converted control signal and controls the motor motion control module to work according to the corresponding converted control signal so that the execution mechanism in the image measuring device moves. In this way, the image measuring main control module realizes the compatibility with two types of digital control conversion signals and analog control conversion signals, and the motion control system realizes the compatibility with two types of digital control signals and analog control signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of a motion control system based on an image measuring device provided by an embodiment of the present invention;

[0021] Figure 2 is a schematic structural diagram of another motion control system based on an image measuring device provided by an embodiment of the present invention;

[0022] Figure 3 is a schematic structural diagram of another motion control system based on an image measuring device provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the sake of description, only parts related to the present invention are shown in the drawings, rather than all the structures.

[0024] Figure 1 is a schematic structural diagram of a motion control system based on an image measuring device provided by an embodiment of the present invention; as Figure 1As shown in the figure, the system includes: a signal switching module 10, a joystick module 20, an image measurement main control module 30, and a motor motion control module 40;

[0025] The first input end of the signal switching module 10 receives a digital control signal; the second input end of the signal switching module 10 receives an analog control signal; the output end of the signal switching module 10 is electrically connected to the input end of the joystick module 20; the output end of the joystick module 20 is electrically connected to the input end of the image measurement main control module 30; the output control end of the image measurement main control module 30 is electrically connected to the motor motion control module 40.

[0026] Specifically, the working process of the motion control system is as follows: The signal switching module 10 can switch and select the input digital control signal and analog control signal according to the user's configuration, and output any selected control signal to the joystick module 20. The joystick module 20 then converts any selected control signal into a corresponding converted control signal. Exemplarily, if the signal switching module 10 selects to output a digital control signal to the joystick module 20, the joystick module 20 converts the digital control signal into a digital control converted signal; if the signal switching module 10 selects to output an analog control signal to the joystick module 20, the joystick module 20 converts the analog control signal into an analog control converted signal. The image measurement main control module 30 then recognizes the corresponding converted control signal, and controls the motor motion control module 40 to work according to the recognized corresponding converted control signal, so that the actuator in the image measurement device moves. In this way, the image measurement main control module 30 realizes the compatibility of the two digital control converted signals and analog control converted signals, and the motion control system realizes the compatibility of the two digital control signals and analog control signals; it avoids the situation in the prior art that the image measurement main control module 30 either receives a digital control converted signal or receives an analog control converted signal, and cannot be compatible with the two input signals at the same interface.

[0027] Optionally, on the basis of the above embodiment, it is further refined and optimized. Figure 2 It is a schematic structural diagram of another motion control system based on an image measurement device provided by an embodiment of the present invention; as Figure 2 shown, the signal switching module 10 includes an X-axis single-pole double-throw analog switch chip U1, a Y-axis single-pole double-throw analog switch chip U2, and a Z-axis single-pole double-throw analog switch chip U3;

[0028] The selection terminal IN of the X-axis single-pole double-throw analog switch chip U1 is connected to the host computer; the digital control signal receiving terminal NC of the X-axis single-pole double-throw analog switch chip U1 is electrically connected to the external digital control signal output unit; the analog control signal receiving terminal NO of the X-axis single-pole double-throw analog switch chip is electrically connected to the external analog control signal output unit; the output terminal COM of the X-axis single-pole double-throw analog switch chip U1 is electrically connected to the X-axis signal control input terminal of the joystick module 20;

[0029] The selection terminal IN of the Y-axis single-pole double-throw analog switch chip U2 is connected to the host computer; the digital control signal receiving terminal NC of the Y-axis single-pole double-throw analog switch chip U2 is electrically connected to the external digital control signal output unit; the analog control signal receiving terminal NO of the Y-axis single-pole double-throw analog switch chip U2 is electrically connected to the external analog control signal output unit; the output terminal COM of the Y-axis single-pole double-throw analog switch chip U2 is electrically connected to the Y-axis signal control input terminal of the joystick module 20;

[0030] The selection terminal IN of the Z-axis single-pole double-throw analog switch chip U3 is connected to the host computer; the digital control signal receiving terminal NC of the Z-axis single-pole double-throw analog switch chip U3 is electrically connected to the external digital control signal output unit; the analog control signal receiving terminal NO of the Z-axis single-pole double-throw analog switch chip U3 is electrically connected to the external analog control signal output unit; the output terminal of the Z-axis single-pole double-throw analog switch chip U3 is electrically connected to the Z-axis signal control input terminal of the joystick module 20.

[0031] Among them, the models of the single-pole double-throw analog switch chip U1 for the X-axis, the single-pole double-throw analog switch chip U2 for the Y-axis, and the single-pole double-throw analog switch chip U3 for the Z-axis are SN74LVC1G3157DBVR; since the motor motion control module 40 controls the movement of the X-axis, Y-axis, and Z-axis in the actuator within the image measuring device; in this embodiment, the signal switching module 10 includes the single-pole double-throw analog switch chip U1 for the X-axis, the single-pole double-throw analog switch chip U2 for the Y-axis, and the single-pole double-throw analog switch chip U3 for the Z-axis. The single-pole double-throw analog switch chip U1 for the X-axis can, correspondingly, under the switching instruction of the host computer, switch and select the X-axis digital control signal and the X-axis analog control signal received by the digital control signal receiving end NC and the analog control signal receiving end N0 respectively, and output any one of the control signals to the joystick module 20 through its output end COM; the single-pole double-throw analog switch chip U2 for the Y-axis can, under the switching instruction of the host computer, switch and select the Y-axis digital control signal and the Y-axis analog control signal received by the digital control signal receiving end NC and the analog control signal receiving end N0 respectively, and output any one of the control signals to the joystick module 20 through its output end COM; the single-pole double-throw analog switch chip U3 for the Z-axis can, under the switching instruction of the host computer, switch and select the Z-axis digital control signal and the Z-axis analog control signal received by the digital control signal receiving end NC and the analog control signal receiving end N0 respectively, and output any one of the control signals to the joystick module 20 through its output end COM; the joystick module 20 then outputs the corresponding control conversion signals for each axis according to the corresponding control signals for each axis; the input end of the image measurement main control module 30 can receive and control the motor motion control module 40 to control the movement of the X-axis, Y-axis, and Z-axis in the actuator within the image measuring device according to the corresponding control conversion signals for each axis.

[0032] Optionally, Figure 3 is a flowchart of another motion control system based on an image measuring device provided by an embodiment of the present invention; as Figure 3 shown, the system further includes: a light source control module 50; the image measurement main control module 30 is electrically connected to the light source control module 50.

[0033] Among them, before controlling the movement of the X-axis, Y-axis, and Z-axis in the actuator within the image measuring device, in order to achieve the image clarity of the image measuring device, the image measurement main control module 30 can communicate with the host computer to obtain a light source control signal, and the image measurement main control module 30 can output the light source control signal to the light source control module 50, and the light source control module 50 thereby adjusts the surface light, bottom light, and coaxial light of the image measuring device with different brightnesses and different angles.

[0034] The light source control module 50 may include a light source output voltage constant device. The light source output voltage constant device can ensure that the output voltage of the light source remains constant when the working conditions change; thus, by adopting the light source output voltage constant device, the light source control module 50 can ensure the stability when adjusting the surface light, bottom light, and coaxial light of the imaging measurement device with different brightnesses and angles.

[0035] Optionally, continuing to refer to Figure 3 , the system further includes: a grating scale data acquisition module 60; the grating scale data acquisition module 60 is electrically connected to the imaging measurement main control module 30.

[0036] Among them, during the process that the imaging measurement main control module 30 controls the X-axis, Y-axis, and Z-axis movements of the actuators in the imaging measurement device through the motor motion control module 40, the grating scale data acquisition module 60 can feed back the actual coordinate values of each motion axis of the imaging measurement device after filtering, signal amplification processing, and quadrature decoding of the acquisition signals emitted by the grating scale; this is beneficial for the imaging measurement main control module 30 to precisely control the X-axis, Y-axis, and Z-axis movements of the actuators in the imaging measurement device through the motor motion control module 40.

[0037] Optionally, continuing to refer to Figure 3 , the system further includes: a power supply module 70; the power supply module 70 is electrically connected to the imaging measurement main control module 30. Among them, the power supply module 70 can convert and process the external input power supply into a certain power signal and output it to the imaging measurement main control module 30, thereby providing a certain power signal for the imaging measurement main control module 30; the imaging measurement main control module 30 can further provide power signals for other modules.

[0038] Optionally, continuing to refer to Figure 3 , the system further includes: a 3D measurement module 80; the 3D measurement module 80 is electrically connected to the imaging measurement main control module 30. Among them, the 3D measurement module 80 is used for height measurement and feeds back the height measurement information to the main control module 30.

[0039] Optionally, continuing to refer to Figure 3 , the motor motion control module 40 includes a motor speed control unit; the pulse output control terminal of the imaging measurement main control module 30 is electrically connected to the pulse receiving terminal of the motor speed control unit.

[0040] Among them, the image measurement main control module 30 identifies the corresponding conversion control signal and outputs it to the motor speed control unit in the form of a pulse modulation signal. The motor speed control unit controls the movement of the actuator in the image measurement device according to the received pulse modulation signal. In this way, through the form of the pulse modulation signal, the zero drift and dynamic balance in the analog quantity form, the poor anti-interference ability, and the problem of runaway caused by line faults can be effectively eliminated. Especially, the zero drift and dynamic balance problems can be eliminated, and the Abbe error can be effectively eliminated to ensure the control accuracy when controlling the large-scale image measurement device.

[0041] Based on the same utility model concept, the embodiment of the present utility model also provides an image measurement device. The image measurement device in this embodiment includes the motion control system based on the image measurement device and the image measurement execution structure in the above embodiment. Since the image measurement device includes the motion control system based on the image measurement device in the above embodiment, it also has the beneficial effects of the above embodiment.

[0042] Note that the above is only the preferred embodiment of the present utility model and the applied technical principle. Those skilled in the art will understand that the present utility model is not limited to the specific embodiments described here. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present utility model. Therefore, although the present utility model has been described in detail through the above embodiments, the present utility model is not limited to the above embodiments only. Without departing from the concept of the present utility model, more other equivalent embodiments can be included, and the scope of the present utility model is determined by the scope of the appended claims.

Claims

1. A motion control system based on an image measuring device, characterized in that: include: Signal switching module, joystick module, image measurement main control module and motor motion control module; The first input end of the signal switching module receives a digital control signal; the first input end of the signal switching module receives an analog control signal; the output end of the signal switching module is electrically connected to the input end of the joystick module; the output end of the joystick module is electrically connected to the input end of the image measurement main control module; the output control end of the image measurement main control module is electrically connected to the motor motion control module.

2. The motion control system according to claim 1, characterized in that: The signal switching module includes an X-axis single-pole double-throw analog switch chip, a Y-axis single-pole double-throw analog switch chip, and a Z-axis single-pole double-throw analog switch chip; The selection end of the X-axis single-pole double-throw analog switch chip is connected to the host computer; the digital control signal receiving end of the X-axis single-pole double-throw analog switch chip is electrically connected to the external digital control signal output unit; the analog control signal receiving end of the X-axis single-pole double-throw analog switch chip is electrically connected to the external analog control signal output unit; the output end of the X-axis single-pole double-throw analog switch chip is electrically connected to the X-axis signal control input end of the joystick module; The selection end of the Y-axis single-pole double-throw analog switch chip is connected to the host computer; the digital control signal receiving end of the Y-axis single-pole double-throw analog switch chip is electrically connected to the external digital control signal output unit; the analog control signal receiving end of the Y-axis single-pole double-throw analog switch chip is electrically connected to the external analog control signal output unit; the output end of the Y-axis single-pole double-throw analog switch chip is electrically connected to the Y-axis signal control input end of the joystick module; The selection end of the Z-axis single-pole double-throw analog switch chip is connected to the host computer; the digital control signal receiving end of the Z-axis single-pole double-throw analog switch chip is electrically connected to an external digital control signal output unit; the analog control signal receiving end of the Z-axis single-pole double-throw analog switch chip is electrically connected to an external analog control signal output unit; the output end of the Z-axis single-pole double-throw analog switch chip is electrically connected to the Z-axis signal control input end of the joystick module.

3. The motion control system according to claim 1, characterized in that: Also includes: Light source control module; the image measurement main control module is electrically connected to the light source control module.

4. The motion control system according to claim 1, characterized in that: Also includes: Grating ruler data acquisition module; the grating ruler data acquisition module is electrically connected to the image measurement main control module.

5. The motion control system according to claim 1, characterized in that: Also includes: Power supply module; the power supply module is electrically connected to the image measurement main control module.

6. The motion control system according to claim 1, characterized in that: The motor motion control module includes a motor speed control unit; the pulse output control end of the image measurement main control module is electrically connected to the pulse receiving end of the motor speed control unit.

7. The motion control system according to claim 2, characterized in that: The models of the X-axis single-pole double-throw analog switch chip, the Y-axis single-pole double-throw analog switch chip and the Z-axis single-pole double-throw analog switch chip are: SN74LVC1G3157DBVR.

8. The motion control system according to claim 3, characterized in that: The light source control module comprises a light source output voltage constant device.

9. The motion control system according to claim 1, characterized in that: Also includes: 3D measurement module; the 3D measurement module is electrically connected to the image measurement main control module.

10. An image measuring device, characterized in that: It includes the motion control system based on the image measurement equipment and the image measurement execution structure as described in any one of claims 1 to 9.

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