A dual probe switching control system of a three-coordinate measuring machine

Abstract

This invention relates to a dual-probe switching control system for a coordinate measuring machine (CMM), comprising: a host computer; and a signal switching device having a serial port interface, a power interface, and multiple sets of relay output interfaces. During probe switching, the host computer sends a probe switching signal to the serial port interface, causing one of the normally closed and normally open output interfaces to output a signal to switch to the probe using the corresponding output interface, and sends a signal back to the host computer indicating successful probe switching. The system also sets parameters for the successfully switched probe and receives measurement signals from the host computer. During measurement using the switched probe, the host computer monitors the heartbeat communication signal between the control cabinet and the signal switching device in real time. This invention enables reliable switching between dual probes and ensures reliable operation of the switched probes.

Description

Technical Field

[0001] This invention relates to the field of coordinate measuring machine (CMM) technology, and more specifically to a dual-probe switching control system for a CMM. Background Technology

[0002] Existing large coordinate measuring machines or measuring robots are widely used in the measurement of products such as automobiles, aerospace, and large machinery.

[0003] Traditional coordinate measuring machines (CMMs) have only one probe, which can perform scanning and triggering functions. As customer inspection needs become more diverse, it is necessary to adapt to and meet different customer inspection requirements. This is because different probes have different performance characteristics; some have advantages in clamping weight, while others have advantages in extension capabilities. Therefore, in order to enable a single machine to meet different inspection needs, an extension rod solution has been designed based on the traditional CMM, that is, an additional probe is added in the vertical direction of the Z-axis.

[0004] For coordinate measuring machines with dual probes, ensuring accurate switching and reliable operation of the switched probes is a technical problem that needs to be solved. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a dual-probe switching control system for a coordinate measuring machine, which realizes reliable switching between the two probes and ensures that the probes work reliably after switching.

[0006] To address the aforementioned technical problems, the present invention proposes the following technical solution:

[0007] This application relates to a dual-probe switching control system for a coordinate measuring machine (CMM). The CMM has a first probe and a second probe. The first probe is detachably mounted on the Z-axis along the Z-direction, and the second probe is detachably mounted on the Z-axis along a direction perpendicular to the Z-direction. The dual-probe switching control system includes:

[0008] Host computer;

[0009] The signal switching device is located in the control cabinet of the coordinate measuring machine and has a serial port interface, a power interface for connecting to an external power supply, and multiple sets of relay output interfaces. Among the multiple sets of relay output interfaces, multiple common interfaces are connected together and connected to the probe interface of the control cabinet. One end of the first probe and the second probe is connected to one of the normally closed output interfaces and normally open output interfaces in the set of relay output interfaces, and the other end of the first probe and the second probe is connected to the other output interface among the normally closed output interfaces and normally open output interfaces.

[0010] When switching probes, the host computer sends a probe switching signal to the serial port interface, causing one of the normally closed output interface and normally open output interface to output a turn-on signal, which is used to switch to the probe corresponding to the output interface, and sends a signal to the host computer that the probe switching is successful.

[0011] After successful switching, the parameters of the probe are set, and the measurement signal sent by the host computer is received.

[0012] During the measurement process using the switched probe, the host computer monitors the heartbeat communication signal between the control cabinet and the signal switching device in real time.

[0013] In some embodiments of this application, the dual-probe switching system further includes:

[0014] The first indicator circuit has a switch signal corresponding to one of the output interfaces connected in series in the power supply circuit of the first indicator circuit, which is used to issue a first indication after the probe corresponding to one of the output interfaces is successfully switched.

[0015] The second indicator circuit has a switch signal corresponding to the other output interface connected in series in the power supply circuit of the first indicator circuit, which is used to issue a second indication after the probe corresponding to the other output interface is successfully switched.

[0016] In some embodiments of this application, the first indicator circuit includes a first audio-visual indicator, a first light indicator, or a first sound indicator, which are respectively used to issue an audio-visual indicator, a light indicator, or a sound indicator after the probe corresponding to one of the output interfaces is successfully switched.

[0017] The second indicator circuit includes a second audio-visual indicator, a second light indicator, or a second sound indicator, which are used to issue an audio-visual indicator, a light indicator, or a sound indicator respectively after the probe corresponding to the other output interface is successfully switched.

[0018] In some embodiments of this application, when the first indicator circuit includes a first light indicator and the second indicator circuit includes a second light indicator, the light indicator color emitted by the first light indicator is different from the light indicator color emitted by the second light indicator.

[0019] In some embodiments of this application, the host computer carries measurement software and control software;

[0020] The measurement software sends the probe switching signal to the control software, and sends the probe setting parameters and measurement signals to the control cabinet;

[0021] The control software receives the signal for probe switching and monitors the probe parameters;

[0022] Upon receiving the probe switching signal, the control software sends a probe switching execution instruction to the signal switching device based on the probe parameters it has monitored.

[0023] The control software listens for the signal indicating successful probe switching.

[0024] After the probe switching is successful, the control cabinet configures the probe parameters and controls the start of measurement;

[0025] During the measurement process using the switched probe, the control software monitors the heartbeat communication signal between the control cabinet and the signal switching device in real time.

[0026] In some embodiments of this application, the signal switching device is a serial port I / O controller.

[0027] In some embodiments of this application, the dual-probe switching control system further includes:

[0028] The first pluggable plug is pluggable to the probe interface of the control cabinet of the coordinate measuring machine;

[0029] The second pluggable plug is used to connect multiple common interfaces of the multiple relay output interfaces together and to the probe interface through the second pluggable plug and the first pluggable plug. One end of the first probe and the second probe is connected to one of the normally closed output interfaces and normally open output interfaces of the relay output interfaces through the second pluggable plug. The other end of the first probe and the second probe is connected to the other output interface of the normally closed output interface and normally open output interface through the second pluggable plug.

[0030] In some embodiments of this application, the first pluggable plug is a D-SUB15 pin plug, and the second pluggable plug is a terminal block quick plug.

[0031] In some embodiments of this application, the dual-probe switching control system further includes:

[0032] The third pluggable plug is connected between the first connecting wires, which are used to connect one of the ends of the first probe and the second probe to one of the normally closed output interface and normally open output interface of the set of relay output interfaces.

[0033] The fourth pluggable connector is connected between the second connecting wires, which are used to connect the other end of the first probe and the second probe to the other output interface of the normally closed output interface and the normally open output interface of the set of relay output interfaces.

[0034] In some embodiments of this application, the third pluggable plug and the fourth pluggable plug are D-SUB15 pin plugs, respectively.

[0035] Compared with the prior art, the dual-probe switching control system for the coordinate measuring machine provided by the present invention has the following advantages and beneficial effects:

[0036] (1) When using the second probe, the host computer sends a command to modify the serial port interface of the signal switching device, and switches the wiring of the signal switching device from one of the normally closed output interface and normally open output interface to the other output interface, thus completing the switching from the first probe to the second probe. When using the first probe, the host computer sends a command to modify the serial port interface of the signal switching device, and switches the wiring of the signal switching device from the other of the normally closed output interface and normally open output interface to the other output interface, thus completing the switching from the second probe to the first probe. When the probe switching is completed, the signal switching device sends a signal to the host computer that the probe switching is successful, thus realizing the dual probe switching.

[0037] (2) Set the parameters of the probe after successful switching and start the measurement. During the measurement, the host computer monitors the heartbeat communication signal between the control cabinet and the signal switching device in real time to ensure that the dual probes are switched correctly and to avoid abnormal collisions caused by switching failure during the use of the probes.

[0038] Other features and advantages of the present invention will become clearer after reading the detailed embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a structural diagram of the coordinate measuring machine involved in the embodiment of the dual probe switching control system for the coordinate measuring machine proposed in this invention.

[0041] Figure 2 This is a schematic diagram of an embodiment of the dual-probe switching control system for a coordinate measuring machine proposed in this invention;

[0042] Figure 3 This is a schematic diagram of signal transmission in an embodiment of the dual-probe switching control system for a coordinate measuring machine proposed in this invention.

[0043] Figure label:

[0044] 100. Coordinate Measuring Machine; 110. Z-axis; 120. First Probe; 130. Second Probe; 140. Adapter; 150. Carbon Fiber Rod; 200. Control Cabinet;

[0045] 300. Signal switching device; 310. Power interface; 320. Serial port interface; 330. A set of relay output interfaces; 331. Normally open output interface; 332. Common interface; 333. Normally closed output interface;

[0046] 400, host computer;

[0047] 500. Switching power supply;

[0048] 600. First LED indicator light;

[0049] 700. Second LED indicator;

[0050] 800, AC / DC box. Detailed Implementation

[0051] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0052] Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this invention. In the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0053] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0054] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0055] This application relates to a control system capable of switching between the dual probes of a coordinate measuring machine 100.

[0056] In some embodiments of this application, see Figure 1 The coordinate measuring machine 100 has a first probe 120 and a second probe 130 to meet different customer testing needs. The first probe 120 and the second probe 130 can be detached and installed on the Z-axis 110 respectively.

[0057] The first probe 120 is collinear with the Z-axis 110 and is detachably mounted on the Z-axis 110 via an adapter 140.

[0058] The second probe 130 uses an extended carbon fiber rod 150 that is perpendicular to the Z-axis 110 and also perpendicular to the first probe 120.

[0059] Specifically, the carbon fiber rod 150 is detachably connected vertically to the adapter 140.

[0060] Generally, the carbon fiber rod 150 is an extended rod, therefore, the weight of the first probe 120 acting on the Z-axis 110 and the weight of the second probe 130 acting on the Z-axis 110 are different.

[0061] Since the traditional coordinate measuring machine 100 has a probe, the probe is pre-configured in the host computer software. The pre-configuration information is then transmitted to the control cabinet 200 of the coordinate measuring machine 100 via the software development interface to complete the signal setting of the probe and confirm that the probe is used.

[0062] When the coordinate measuring machine 100 has two probes, the first probe 120 and the second probe 130, it is necessary to ensure that when using different probes, the probes can be switched accurately and the probe configuration can be completed correctly at the same time.

[0063] In this application, the accuracy of probe switching is ensured through both hardware and software.

[0064] See Figure 2 The dual probe switching control system includes a host computer 400, a pluggable plug (not shown), and a signal switching device 300. The host computer 400 contains software programs.

[0065] The signal switching device 300 is used to perform probe switching when it receives a probe switching signal sent by the host computer 400.

[0066] In some embodiments of this application, for the convenience of arranging the signal switching device 300, the signal switching device 300 is placed inside the control cabinet 200 of the coordinate measuring machine 100.

[0067] The signal switching device 300 has a serial port interface 320, a power interface 310, and multiple sets of relay output interfaces (a set of relay output interfaces 330 is shown). The power interface 310 is connected to an external power supply. In some embodiments of this application, the external power supply can be selected as a switching power supply 500.

[0068] The serial port interface 320 is used to communicate with the host computer 400. The communication between the serial port interface 320 and the host computer 400 is modified by software.

[0069] Multiple relay output interfaces are used to output multiple relay output signals. Each relay output interface, taking a relay output interface 330 as an example, includes a normally closed output interface 333, a normally open output interface 331, and a common interface 332. The normally closed output interface 333 and the normally open output interface 331 belong to a corresponding interface. That is, when the normally closed output interface 333 outputs an ON signal, the normally open output interface 331 outputs an OFF signal, and when the normally open output interface 331 outputs an ON signal, the normally closed output interface 333 outputs an OFF signal.

[0070] One end of the first probe 120 and the other end of the second probe 130 are connected to one of the normally closed output interfaces 333 and normally open output interfaces 331 in a set of relay output interfaces 330. The other end of the first probe 120 and the other end of the second probe 130 are connected to the other output interface in a set of relay output interfaces 330.

[0071] That is, the end of the first probe 120 is connected to one of the normally closed output interface 333 and the normally open output interface 331, and the end of the second probe 130 is connected to the other of the normally closed output interface 333 and the normally open output interface 331.

[0072] For ease of explanation, we will take the normally open output interface 331 corresponding to the first probe 120 and the normally closed output interface 333 corresponding to the second probe 130 as examples.

[0073] The end of the first probe 120 is connected to the normally open output interface 331, and the end of the second probe 130 is connected to the normally closed output interface 333.

[0074] The probe interface of the control cabinet 200 contains multiple signal lines for controlling the probe and power supply lines for supplying low-voltage power to the probe.

[0075] In order to control the switched probe, the signal line and power supply line are respectively connected to multiple common interfaces of multiple relay output interfaces. Among the multiple common interfaces, one common interface is the common interface 332 of a set of relay output interfaces 330 as described above, and the multiple common interfaces are interconnected.

[0076] When the normally open output interface 331 outputs an ON signal, the system switches to the first probe 120, and the control cabinet 200 can control the first probe 120. At this time, because the normally closed output interface 333 outputs an OFF signal, the second probe 130 is not switched. When the normally closed output interface 333 outputs an ON signal, the system switches to the second probe 130, and the control cabinet 200 can control the second probe 130. At this time, because the normally open output interface 331 outputs an OFF signal, the first probe 120 is not switched.

[0077] As shown above, the switching between the first probe 120 and the second probe 130 is realized.

[0078] It should be noted that, based on the nature and functional attributes of the probe, it is necessary to connect a specific probe of control cabinet 200 (e.g., Figure 2 The second probe 130 shown is first connected via the AC / DC box 800 (i.e., AC to DC converter) and then connected to the normally closed output interface 333. See [link to documentation]. Figure 2 .

[0079] In some embodiments of this application, in order to connect the first probe 120 and the second probe 130 with the control cabinet 200 and the signal switching device 300, a first pluggable plug (not shown) is provided at the probe interface of the control cabinet 200, which outputs a signal for controlling the probe.

[0080] The first pluggable connector can be a D-SUB15 pin connector, which includes a male and a female connector. Taking the female connector as an example, the male connector can be plugged into the female connector, and the male connector connects to multiple common interfaces of the multiple relay output interfaces as described above.

[0081] Furthermore, for the signal switching device 300, a second pluggable plug is also provided at its multiple relay output interfaces.

[0082] The second pluggable connector can be a quick-connect terminal block, which also includes male and female connectors. Taking the female connector as an example, which is located at the relay output interface, the male connector can be plugged into the female connector.

[0083] The end of the first probe is connected to the male and female ends of the second pluggable plug so that the end of the first probe can be connected to the normally open output interface of a set of relay output interfaces.

[0084] The end of the second probe is connected to the male and female ends of the second pluggable plug so that the end of the second probe can be connected to the normally closed output interface in a set of relay output interfaces.

[0085] Since the signal switching device 300 is located inside the control cabinet 200 and the control cabinet 200 is a long distance away from the coordinate measuring machine, the connection line between the end of the probe and the second pluggable plug is designed to facilitate line maintenance and reliable use.

[0086] A third pluggable connector is provided between the above connecting wires for the first probe, wherein the connecting wires are divided into a first connecting wire I and a second connecting wire I.

[0087] The third pluggable connector has a third female connector and a third male connector. One of the third male connector and the third female connector is connected to the other end of the first probe and the second probe via the first connecting line I. The other of the third male connector and the third female connector is connected to the other output interface of a set of relay output interfaces, which is either normally closed or normally open, via the second connecting line I.

[0088] In some embodiments of this application, the third male connector is connected to the end of the first probe via a first connecting line I, and the third female connector is connected to the normally open output interface via a second connecting line I.

[0089] A fourth pluggable connector is provided between the above connecting wires for the second probe, wherein the connecting wires are divided into a first connecting wire II and a second connecting wire II.

[0090] The fourth pluggable connector has a fourth female connector and a fourth male connector. One of the fourth male connector and the fourth female connector is connected to the other of the terminals of the first probe and the second probe via the first connecting wire II. The other of the fourth male connector and the fourth female connector is connected to the other output interface of a set of relay output interfaces, which is either normally closed or normally open, via the second connecting wire II.

[0091] In some embodiments of this application, the fourth male connector is connected to the end of the second probe via the first connecting line II, and the fourth female connector is connected to the normally closed output interface via the second connecting line II.

[0092] Both the third and fourth pluggable connectors can be designed as D-SUB15 pin connectors. See also Figure 3 It shows a schematic diagram of signal transmission between the host computer 400, the control cabinet 200, and the signal switching device 300.

[0093] In terms of software processing, if it is necessary to switch to the first probe 120, the host computer 400 sends a probe switching signal to the serial port interface 320 of the signal switching device 300 to realize the switching from the second probe 130 to the first probe 120, and sends a signal to the host computer 400 that the probe switching is successful.

[0094] To enable probe configuration, the host computer 400 will also send probe parameters and measurement signals to the control cabinet 200 for parameter configuration of the probe after probe switching is completed.

[0095] During the switching process and measurement, communication between the control cabinet 200 and the signal switching device 300 will continue. By monitoring the heartbeat communication signal between the control cabinet 200 and the signal switching device 300, damage to the probe caused by communication interruption (e.g., due to probe switching failure, probe not being reliably switched successfully, etc.) is prevented.

[0096] To achieve effective switching of the probe, in some embodiments of this application, see [link to relevant documentation]. Figure 3 The host computer software includes measurement software and control software. The measurement software is used to configure the probe and send measurement signals to the control cabinet 200, while the control software is used to control the probe switching.

[0097] The measurement software sends a probe switching signal to the control software and sends the probe setting parameters and measurement signals to the control cabinet 200.

[0098] To ensure accurate switching, the control software receives the probe switching signal and monitors the probe parameters. When the control software receives the probe switching signal and makes a switching judgment based on the monitored probe parameters, for example, if the probe information related to the probe switching signal is consistent with the monitored probe parameters, it indicates that the probe does need to be switched. Only then will the control software send the probe switching execution command to the signal switching device 300.

[0099] When the serial port interface 320 of the signal switching device 300 receives the instruction to switch the probe, it starts to execute the probe switching and sends a signal to the control software that the probe switching is successful. At this time, it informs the control software that the probe switching has been successfully executed.

[0100] After the probe switching is successful, since the measurement software has previously sent the probe parameters and measurement signals to the control cabinet 200, the control cabinet 200 configures the probe parameters and controls the start of measurement.

[0101] Once the communication between the control software and the signal switching device 300 is established during the successful switching of the probe and the measurement, it will remain indefinitely. Therefore, the control software monitors the heartbeat communication signal between the control cabinet 200 and the signal switching device 300 in real time to ensure that the switching probe is monitored during use. If any abnormal signal is detected, the control software will detect it and report it to prevent damage caused by probe switching failure.

[0102] To allow for a direct observation of whether the probe switching was successful, in some embodiments of this application, the dual probe switching system further includes a first indicator circuit (not shown) and a second indicator circuit (not shown).

[0103] The first indicator circuit is used to provide a first indication when the first probe 120 is successfully switched, and the second indicator circuit is used to provide a second indication when the second probe 130 is successfully switched.

[0104] The switch signal output by the normally open output interface 331 corresponding to the first probe 120 is connected in series in the power supply circuit of the first indicator circuit. When switching to the first probe 120, the switch signal output by the normally open output interface 331 is an on signal. At this time, the first indicator circuit is powered to issue the first indication, which reminds the user that the first probe 120 has been successfully switched.

[0105] The switch signal output by the normally closed output interface 333 of the second probe 130 is connected in series in the power supply circuit of the second indicator circuit. When switching to the second probe 130, the switch signal output by the normally closed output interface 333 is an on signal. At this time, the second indicator circuit is powered to issue a second indication, which reminds the user that the second probe 130 has been successfully switched.

[0106] The structures of the first indicator circuit and the second indicator circuit can be the same or different.

[0107] The first indicator circuit may include a first audible and visual indicator, a first visual indicator, or a first sound indicator, which are used to issue an audible and visual indicator, a visual indicator, or a sound indicator after the first probe 120 is successfully switched.

[0108] The second indicator circuit may include a second audible and visual indicator, a second visual indicator, or a second sound indicator, which are used to issue an audible and visual indicator, a visual indicator, or a sound indicator after the second probe 130 is successfully switched.

[0109] In some embodiments of this application, the first indicator circuit includes a first light indicator, which may be a first LED indicator 600.

[0110] The second indicator circuit includes a second light indicator, which may also be a second LED indicator 700.

[0111] To avoid confusion when the indicator lights are on, the light color emitted by the first LED indicator 600 (e.g., green) is different from the light color emitted by the second LED indicator 700 (e.g., blue).

[0112] In this way, by monitoring the heartbeat communication signal through the control software and confirming the status of the indicator lights, abnormal collisions caused by probe switching failures are avoided.

[0113] The signal switching device 300 described above can be a serial port I / O controller, such as the LH-IO series product, which is a relay device that supports RS485 / 232 or network communication and has multiple relay outputs.

[0114] Users can modify the operating mode of the device in the host computer software. In some embodiments of this application, the normal operating mode of the device can be adopted. After giving the relay a disconnect or close command, the relay will perform a corresponding action to complete the load power-on or disconnection according to the command.

[0115] The dual-probe switching control system disclosed in this application can reliably switch between two probes, thus reliably meeting various measurement needs of users.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dual-probe switching control system for a coordinate measuring machine, the coordinate measuring machine having a first probe and a second probe, the first probe being detachably mounted on the Z-axis along the Z-direction, and the second probe being detachably mounted on the Z-axis along a direction perpendicular to the Z-direction, characterized in that, The dual-probe switching control system includes: Host computer; The signal switching device is located in the control cabinet of the coordinate measuring machine and has a serial port interface, a power interface for connecting to an external power supply, and multiple sets of relay output interfaces. Among the multiple sets of relay output interfaces, multiple common interfaces are connected together and connected to the probe interface of the control cabinet. One end of the first probe and the second probe is connected to one of the normally closed output interfaces and normally open output interfaces in the set of relay output interfaces, and the other end of the first probe and the second probe is connected to the other output interface among the normally closed output interfaces and normally open output interfaces. When switching probes, the host computer sends a probe switching signal to the serial port interface, causing one of the normally closed and normally open output interfaces to output a turn-on signal, which is used to switch to the probe corresponding to the output interface, and sends a signal to the host computer that the probe switching is successful. After successful switching, the parameters of the probe are set, and the measurement signal sent by the host computer is received. During the measurement process using the switched probe, the host computer monitors the heartbeat communication signal between the control cabinet and the signal switching device in real time.

2. The dual-probe switching control system according to claim 1, characterized in that, The dual-probe switching control system also includes: The first indicator circuit has a switch signal corresponding to one of the output interfaces connected in series in the power supply circuit of the first indicator circuit, which is used to issue a first indication after the probe corresponding to one of the output interfaces is successfully switched. The second indicator circuit has a switch signal corresponding to the other output interface connected in series in the power supply circuit of the first indicator circuit, which is used to issue a second indication after the probe corresponding to the other output interface is successfully switched.

3. The dual-probe switching control system according to claim 2, characterized in that, The first indicator circuit includes a first audio-visual indicator, a first light indicator, or a first sound indicator, which are respectively used to issue an audio-visual indicator, a light indicator, or a sound indicator after the probe corresponding to one of the output interfaces is successfully switched. The second indicator circuit includes a second audio-visual indicator, a second light indicator, or a second sound indicator, which are used to issue an audio-visual indicator, a light indicator, or a sound indicator respectively after the probe corresponding to the other output interface is successfully switched.

4. The dual-probe switching control system according to claim 3, characterized in that, When the first indicator circuit includes a first light indicator and the second indicator circuit includes a second light indicator, the light indicator color emitted by the first light indicator is different from the light indicator color emitted by the second light indicator.

5. The dual-probe switching control system according to claim 1, characterized in that, The host computer contains measurement software and control software; The measurement software sends the probe switching signal to the control software, and sends the probe setting parameters and measurement signals to the control cabinet; The control software receives the signal for probe switching and monitors the probe parameters; Upon receiving the probe switching signal, the control software sends a probe switching execution instruction to the signal switching device based on the probe parameters it has monitored. The control software listens for the signal indicating successful probe switching. After the probe switching is successful, the control cabinet configures the probe parameters and controls the start of measurement; During the measurement process using the switched probe, the control software monitors the heartbeat communication signal between the control cabinet and the signal switching device in real time.

6. The dual-probe switching control system according to claim 1, characterized in that, The signal switching device is a serial port I / O controller.

7. The dual-probe switching control system according to claim 1, characterized in that, The dual-probe switching control system also includes: The first pluggable plug is pluggable to the probe interface of the control cabinet of the coordinate measuring machine; The second pluggable plug is used to connect multiple common interfaces of the multiple relay output interfaces together and to the probe interface through the second pluggable plug and the first pluggable plug. One end of the first probe and the second probe is connected to one of the normally closed output interfaces and normally open output interfaces of the relay output interfaces through the second pluggable plug. The other end of the first probe and the second probe is connected to the other output interface of the normally closed output interface and normally open output interface through the second pluggable plug.

8. The dual-probe switching control system according to claim 7, characterized in that, The first pluggable plug is a D-SUB15 pin plug, and the second pluggable plug is a terminal block quick plug.

9. The dual-probe switching control system according to claim 1, characterized in that, The dual-probe switching control system also includes: The third pluggable plug is connected between the first connecting wires, which are used to connect one of the ends of the first probe and the second probe to one of the normally closed output interface and normally open output interface of the set of relay output interfaces. The fourth pluggable connector is connected between the second connecting wires, which are used to connect the other end of the first probe and the second probe to the other output interface of the normally closed output interface and the normally open output interface of the set of relay output interfaces.

10. The dual-probe switching control system according to claim 9, characterized in that, The third and fourth pluggable plugs are both D-SUB15 pin plugs.

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