WO2019214221A1

WO2019214221A1 - Communication method between laser and external device, and laser system

Info

Publication number: WO2019214221A1
Application number: PCT/CN2018/119145
Authority: WO
Inventors: 李亮; 蒋峰
Original assignee: 深圳市创鑫激光股份有限公司
Priority date: 2018-05-08
Filing date: 2018-12-04
Publication date: 2019-11-14
Also published as: CN108683478A; CN108683478B

Abstract

A communication method between a laser (10) and an external device (20), and a laser system. The communication method comprises: allowing the laser (10) to continuously receive, at a first time interval (t1), data request signals sent by the external device (20) (S101); and after the external device (20) receives receipt data returned by the laser (10) for the first time, allowing the external device (20) to synchronously continuously receive, at a second time interval (t2), subsequent receipt data returned by the laser (10) (S102), wherein the first time interval (t1) and the second time interval (t2) are both smaller than a communication period (Ta, Tb) between the laser (10) and the external device (20), and the second time interval (t2) may vary within a certain range. The laser system comprises the laser (10) and the external device (20), and used for performing the communication method above. More effective information can be transmitted in real time in a unit time, the working state information of the laser (10) can be acquired timely during the working period of the laser (10), and real-time monitoring of the laser (10) can be implemented.

Description

Communication method between laser and external device, laser system

Technical field

The embodiments of the present application belong to the field of laser communication technologies, and in particular, to a communication method and a laser system for a laser and an external device.

Background technique

Lasers can be applied to industrial, agricultural, precision measurement and detection, communication and information processing, medical, military and other aspects. In different application fields, the response speed and accuracy requirements of the laser itself are generally required. The synchronization speed of the laser and other equipment platforms is also higher. The general process of communication between existing lasers and other device platforms is that other device platforms interact with the laser as the master device, which is related to the hardware configuration of the master device, the task complexity, and the processing capability of the laser itself. The interaction process often produces a long wait. Time, resulting in low communication efficiency, the data synchronization rate between the master device and the laser is low.

Application content

In order to solve the above problem, the embodiment of the present application provides a communication method between a laser and an external device, so as to solve the problem that the existing laser and the external device have low communication efficiency and the data synchronization rate is low.

Specifically, the present application adopts the following technical solutions.

In a first aspect, an embodiment of the present application provides a communication method between a laser and an external device, including:

And causing the laser to continuously receive the data request signal sent by the external device at a first time interval;

After the first device receives the return receipt data of the laser for the first time, the external device continuously receives subsequent receipt data returned by the laser at a second time interval;

The first time interval and the second time interval are both smaller than a communication period between the laser and an external device, and the second time interval may vary within a certain range.

Further, the communication method further includes:

And acquiring, in a working period of the laser, a value of the second time interval in real time, and comparing the value with a preset range, and determining that the laser is faulty when the value exceeds the preset range, And output the judgment result.

Further, when it is determined that the laser is faulty, the laser itself stops running according to an internally preset fault processing program, or a control signal is sent to the laser by an external device to control the laser to stop running.

Further, the communication method further includes:

After the external device receives the receipt data, the receipt data is processed in real time, and the real-time processing result is output.

Further, the output real-time processing result includes:

Displaying the processing result on the interactive interface of the external device or updating the processing result of the last display in the interactive interface of the external device.

Further, the output processing result further includes:

When the processing result includes information that the laser operates abnormally, a fault alarm is output by the external device, and the laser is stopped.

Further, the controller of the laser continuously sends a data acquisition request to the optical path mechanism or each sensor at a certain time interval, and receives the data returned by the optical path mechanism or each sensor from time to time.

In a second aspect, the embodiment of the present application further provides a laser system, including a laser and an external device connected to the laser;

The laser is configured to continuously receive a data request signal sent by the external device at a first time interval;

The external device is configured to continuously receive subsequent receipt data returned by the laser at a second time interval after receiving the return receipt data of the laser for the first time;

Further, the laser or the external device is further configured to acquire a value of the second time interval in real time during a working period of the laser, and compare the value with a preset range, when the value is When the preset range is exceeded, the laser failure is determined, and the determination result is output.

Further, the external device is further configured to perform real-time processing on the receipt data after receiving the receipt data, and output a real-time processing result.

Further, the external device includes an interaction interface, and the outputting the real-time processing result by the external device includes:

Displaying the processing result on the interactive interface or updating the processing result displayed last time in the interactive interface.

Further, the outputting the real-time processing result by the external device further includes:

A fault alarm is output when the processing result includes information that the laser operates abnormally, and the laser is controlled to stop working.

A method for communicating a laser with an external device according to an embodiment of the present application, the laser system, by continuously receiving the data request signal sent by the external device by the laser at a first time interval, and causing the laser to be according to the data After the request signal returns the receipt data for the first time, the subsequent return receipt data continuously returned to the external device at the second time interval can greatly improve the communication efficiency of the laser during the working period, and the unit time can be compared with the prior art. More effective information is transmitted in real time, and the working state information of the laser can be acquired in a timely manner during the working cycle of the laser to realize real-time monitoring of the laser.

DRAWINGS

In order to more clearly illustrate the present application or the prior art, a brief description of the drawings used in the embodiments or the prior art description will be made below. Obviously, the drawings in the following description are the present application. For some embodiments, other drawings may be obtained from those of ordinary skill in the art without departing from the drawings.

1 is a flowchart of a method for communicating a laser with an external device according to an embodiment of the present application;

2 is a schematic diagram of a first time interval and a second time interval according to an embodiment of the present application;

FIG. 3 is a schematic diagram of overlapping communication cycles according to an embodiment of the present application; FIG.

4 is a schematic block diagram of a laser system provided by an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present application. All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention applies, unless otherwise defined. The terminology used herein is for the purpose of describing particular embodiments, and is not intended to be limiting. The terms "first", "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish different objects, and are not intended to describe a specific order. Furthermore, the terms "comprises" and "comprising" and "comprising" are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or alternatively Other steps or units inherent to these processes, methods, products, or equipment.

References to "an embodiment" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the present application. The appearances of the phrases in various places in the specification are not necessarily referring to the same embodiments, and are not exclusive or alternative embodiments that are mutually exclusive. Those skilled in the art will understand and implicitly understand that the embodiments described herein can be combined with other embodiments.

The embodiment of the present application provides a communication method between a laser and an external device, where the laser may be a fiber laser, the external device may be a host computer, and the upper computer may be connected to the optical fiber. The laser is directly connected to the laser, and the fiber laser is connected to the fiber laser through the machine board. The method includes:

S101. The laser is caused to continuously receive the data request signal sent by the external device at a first time interval.

S102. After the laser receives the data request signal for the first time, returning the return receipt data, the laser sequentially returns subsequent receipt data to the external device at a second time interval. The receipt data may be operational status data of the laser.

The first time interval and the second time interval are both smaller than a communication period between the laser and an external device, and the second time interval may be changed within a certain range, and the certain range may be for different types. One or more ranges of laser presets are described below. In the above step, the external device transmits a data request signal, and the process of acquiring and returning the corresponding receipt data to the external device after the laser receives the data request signal forms a receipt cycle of the receipt data, that is, a communication cycle between the laser and the external device. The communication cycle is a fixed value, and since it is necessary to ensure that no false positives occur, the duration of the communication cycle must be the maximum time that the laser can react. Specifically, as shown in FIG. 2, the communication cycle Ta and the communication cycle Tb and the corresponding first time interval t1 and second time interval t2 are shown. In this embodiment, the first time interval is determined by a communication line between the external device and the external device and the laser, and the external device continuously transmits a data request signal to the laser through the communication line at a first time interval, correspondingly, the laser The data request signal is continuously received at the first time interval, and since the size of the receipt data returned by the laser according to the data request signal is different, the time for the laser itself to internally acquire and post back to the external device is different, so the external device receives the receipt data of the laser. The second time interval is a change value, but is maintained within a certain range. For example, in some lasers, the time for obtaining the receipt data is within 20 ms, and the time for returning the receipt data to the external device is within 80 ms. Then, the second time interval of the external device receiving the receipt data of the laser is within 100 ms. Of course, there are special cases. For example, some lasers have a faster reading and writing speed, and most of the time for obtaining the receipt data can be controlled within 2 ms, but there is Acquisition time of some special receipt data Within 150ms, the second time interval can be divided into categories according to the class. At this time, the second time interval will have two ranges of 0 to 2ms and 2ms to 150ms, thereby making the laser and/or external device change according to different conditions. The range situation makes a corresponding response or operation. For example, the acquisition time of the laser when acquiring the receipt data exceeds 2 ms. At this time, one or more waiting signals may be sent to the external device first, so that the external device maintains the state of waiting for reception, preventing the external device from being The receipt data was not received for a long time and the laser was misjudged. In this embodiment, the receiving process of the data request signal of S101 and the returning process of the returning data in S102 are two independent processes, which makes the acquisition periods of the plurality of receipt data overlap in time, such as As shown in FIG. 3, the receipt cycle of three receipt data is shown, which are respectively T1, T2, and T3. As shown in (a) of FIG. 3, T1 and T2 overlap in the occurrence time, and T2 and T3 are in The occurrence time overlaps, and even in some embodiments, as shown in (b) of FIG. 3, T1, T2, and T3 overlap in occurrence time, and a receipt data is executed by the laser and the external device in the related art. After the acquisition cycle, the process of acquiring the next receipt data is performed. The laser in the communication method provided by the present application passively receives the data request signal, but the return receipt data becomes the active behavior of the laser, and the external device actively sends the data request signal. However, the receiving receipt data becomes a passive behavior of the external device, the laser passively receives the data request signal using one channel, and the laser actively returns the receipt data using another channel. The two channels are sent and received in parallel, which is equivalent to two-line processing. By separating the data request process of the external device from the return process of the laser return data, the laser can send multiple receipt data to the external device to overlap in the processing time. The waiting time for the receipt of the receipt data is reduced, the overall communication duration is greatly reduced, and the more the receipt data is acquired, the more effectively the communication efficiency is improved, thereby improving the data synchronization rate between the laser and the external device.

Further, in some embodiments of the present application, the communication method further includes acquiring a value of the second time interval in real time during a working period of the laser, and comparing the value with a preset range, when When the value exceeds the preset range, the laser is determined to be faulty, and the determination result is output. Specifically, the value of the second time interval may be acquired in real time by using the laser or an external device. When the laser fault is determined, the laser itself stops running according to the internal preset fault processing program, or is externally The laser sends a control signal to control the laser to stop running, which reduces the user's economic loss to a certain extent, and can also ensure better safety and avoid accidental injury.

Further, in other embodiments of the present application, the communication method further includes: after the external device receives the receipt data, performing real-time processing on the receipt data, and outputting a real-time processing result. Since the external device is passively receiving the receipt data, the external device can process the receipt data whenever it receives the receipt data. As long as the first receipt data is received, the subsequent subsequent receipt data is sent back by the laser. Come over, and process the received receipt data one by one, which makes the external device change from waiting for the receipt data to being dominated by its processing capability during the communication process between the external device and the laser. By adopting the communication method of the present application, when the processing capability of the external device can satisfy the requirement of timely processing the continuously received receipt information, the data synchronization rate of the external device and the laser can be greatly improved.

As an alternative, the output real-time processing result includes displaying a processing result on an interaction interface (for example, a graphical user interface) of the external device or updating the processing result displayed last time in the interactive interface of the external device. As a further optional solution, the output processing result further includes: when the processing result includes the information that the laser works abnormally, outputting a fault alarm by the external device, and stopping the laser; using the present application The communication method can learn the fault information of the laser as early as possible, thereby reducing the probability of laser damage, reducing the loss, and greatly reducing the probability of accidents; in some embodiments, similar communication can be used inside the laser. The method, that is, the communication between the controller of the laser and the optical path mechanism or the sensors may also adopt the above-mentioned two-line processing communication mode, and the controller continuously sends data acquisition requests to other components at certain time intervals, and on the other hand, irregularly Receiving data returned by other components, thereby enabling the laser to detect faults at the first time and react quickly, minimizing the damage caused by the fault.

According to the communication method of the laser and the external device provided by the embodiment of the present application, the laser receives the data request signal sent by the external device continuously at the first time interval, and makes the laser first request the signal according to the data. After the return receipt data is returned, the subsequent receipt data that is continuously returned to the external device at the second time interval can greatly improve the communication efficiency of the laser in the working period, and can be transmitted in real time in a unit time compared with the prior art. More effective information, and the laser's working state information can be acquired in a timely manner during the working cycle of the laser to realize real-time monitoring of the laser.

Referring to the block diagram shown in FIG. 4, the embodiment of the present application further provides a laser system including a laser 10, an external device 20 connected to the laser 10, and a communication between the laser 10 and the external device 20 in this embodiment. Use RS232 serial cable as the medium, such as USB to RS232 serial cable, or interface conversion chip such as FT232RL.

In this embodiment, the laser 10 is configured to continuously receive the data request signal sent by the external device 20 at a first time interval; the external device 20 is configured to synchronize after receiving the return receipt data of the laser 10 for the first time. Subsequent receipt data returned by the laser 10 is continuously received at a second time interval.

The first time interval and the second time interval are both smaller than a communication period of the laser 10 and the external device 20, and the second time interval may vary within a certain range. For the communication cycle, specifically, the external device 20 transmits a data request signal, and the acquisition cycle of the receipt data formed by the process of acquiring and returning the corresponding receipt data to the external device 20 after the laser 10 receives the data request signal is specifically referred to. Figure 2 is an illustration. In the present embodiment, the first time interval is determined by the communication line between the external device 20 and the external device 20 and the laser 10, and the external device 20 continuously transmits a data request signal to the laser 10 through the communication line at the first time interval. Correspondingly, the laser 10 continuously receives the data request signal at the first time interval, and since the receipt data returned by the laser 10 according to the data request signal is different in size, the times of acquisition and postback are different, so the external device 20 receives the laser 10 The second time interval of the receipt data is a change value, but is maintained within a certain range.

In this embodiment, the receiving process of the data request signal of the laser 10 and the receiving process of the returning data of the external device 20 are two independent processes, which causes the acquisition periods of the plurality of receipt data to be partially overlapped in time. For details, refer to the related description in the foregoing method embodiment, as shown in FIG. 3, and details are not described herein again. This two-line processing mode is executed after the laser 10 and the external device 20 execute the acquisition cycle of a receipt data. The process of the acquisition cycle of the next receipt data, the laser 10 in the laser 10 system provided by the present application passively receives the data request signal, but the return receipt data becomes the active behavior of the laser 10, and the external device 20 actively transmits the data request signal, but Receiving the receipt data becomes a passive behavior of the external device 20, and by separating the data request process of the external device 20 from the return data return process of the laser 10, the laser 10 can be caused to transmit a plurality of receipt data to the external device 20 at the processing time. Repeatedly, which reduces the waiting time for receipt data return, and the overall communication duration The data is greatly reduced, and the more the receipt data is acquired, the more effectively the communication efficiency is improved, thereby improving the data synchronization rate between the laser 10 and the external device 20.

Further, the laser 10 or the external device 20 is further configured to acquire the value of the second time interval in real time during the working period of the laser 10, and compare the value with a preset range, when When the value exceeds the preset range, it is determined that the laser 10 is faulty, and the determination result is output. When it is judged that the laser 10 is faulty, the laser 10 itself stops the operation according to the internal preset fault processing program, or the external device 20 sends a control signal to the laser 10 to control the laser 10 to stop running, thereby reducing the user's economic loss to a certain extent. It can also give people a better guarantee of safety and avoid accidental injuries.

Further, the external device 20 is further configured to perform real-time processing on the receipt data after receiving the receipt data, and output a real-time processing result. Since the external device 20 passively receives the receipt data, the external device 20 can process the receipt data whenever it receives the receipt data. As long as the first receipt data is received, the subsequent return receipt data is continuously lasered by the laser. 10 sends back and processes the received receipt data one by one, which causes the external device 20 to change from waiting for the receipt data to being in its own processing cycle during the communication process between the external device 20 and the laser 10. The processing capability is dominant. With the communication method of the present application, when the processing capability of the external device 20 can meet the requirement of timely processing the continuously received receipt information, the data synchronization rate of the external device 20 and the laser 10 can be greatly improved. .

Further, as an alternative, the external device 20 includes an interaction interface, and the outputting the real-time processing result by the external device 20 includes displaying the processing result on the interaction interface or updating the processing result displayed last time in the interaction interface update. As a further alternative, the outputting the real-time processing result by the external device 20 further includes outputting a fault alarm when the processing result includes information that the laser 10 is abnormal in operation, and controlling the laser 10 to stop operating. With the communication method of the present application, the failure information of the laser 10 can be learned as early as possible, thereby reducing the probability of damage of the laser 10, reducing the loss, and greatly reducing the probability of accidents; in some embodiments, inside the laser 10 A similar communication method can also be adopted, that is, the communication between the controller of the laser 10 and other components can also adopt the communication method of the above two-wire processing, and the controller continuously sends data acquisition requests to other components at certain time intervals, and On the one hand, the data returned by other components is received from time to time, thereby enabling the laser 10 to detect the fault at the first time and react quickly, minimizing the loss caused by the fault.

According to the laser system provided by the embodiment of the present application, the data request signal sent by the external device 20 is continuously received by the laser 10 at a first time interval, and the laser 10 returns the receipt data for the first time according to the data request signal. Simultaneously returning subsequent receipt data to the external device 20 at the second time interval can greatly improve the communication efficiency of the laser 10 during the working period, and can transmit more in real time per unit time than the prior art. Effective information, and the operating state information of the laser 10 can be acquired in a more timely manner during the duty cycle of the laser 10 to achieve real-time monitoring of the laser 10.

The embodiments described above are only a part of the embodiments of the present application, and not all of the embodiments. The preferred embodiments of the present application are given in the drawings, but the scope of the patent application is not limited. The present application may be embodied in a number of different forms, and the embodiments are provided for the purpose of making the understanding of the disclosure of the present application more comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art may still modify the technical solutions described in the foregoing specific embodiments, or equivalently replace some of the technical features. . The equivalent structure made by using the specification and the contents of the drawings, which are directly or indirectly used in other related technical fields, are all within the scope of the patent protection of the present application.

Claims

A communication method between a laser and an external device, comprising:

And causing the laser to continuously receive the data request signal sent by the external device at a first time interval;

After the first device receives the return receipt data of the laser for the first time, the external device continuously receives subsequent receipt data returned by the laser at a second time interval;

The first time interval and the second time interval are both smaller than a communication period between the laser and an external device, and the second time interval may vary within a certain range.
The method for communicating a laser with an external device according to claim 1, further comprising:

And acquiring, in a working period of the laser, a value of the second time interval in real time, and comparing the value with a preset range, and determining that the laser is faulty when the value exceeds the preset range, And output the judgment result.
The method for communicating a laser with an external device according to claim 2, further comprising:

When it is determined that the laser is faulty, the laser itself stops operating according to an internally preset fault handling procedure, or a control signal is sent to the laser by an external device to control the laser to stop running.
The method for communicating a laser with an external device according to claim 1, further comprising:

After the external device receives the receipt data, the receipt data is processed in real time, and the real-time processing result is output.
The method for communicating a laser with an external device according to claim 4, wherein the output real-time processing result comprises:

The processing result is displayed on the interactive interface of the external device or the processing result of the last display is replaced at the interactive interface of the external device.
The communication method of the laser and the external device according to claim 4 or 5, wherein the output processing result further comprises:

When the processing result includes information that the laser operates abnormally, a fault alarm is output by the external device, and the laser is stopped.
A method of communicating a laser with an external device according to claim 1, wherein

The controller of the laser continuously transmits a data acquisition request to the optical path mechanism or each sensor at a certain time interval, and receives the data returned by the optical path mechanism or each sensor from time to time.
A laser system comprising a laser, an external device connected to the laser;

The laser is configured to continuously receive a data request signal sent by the external device at a first time interval;

The external device is configured to continuously receive subsequent receipt data returned by the laser at a second time interval after receiving the return receipt data of the laser for the first time;

The first time interval and the second time interval are both smaller than a communication period between the laser and an external device, and the second time interval may vary within a certain range.
The laser system according to claim 8, wherein the laser or the external device is further configured to acquire a value of the second time interval in real time during a working period of the laser, and compare the value with The preset range is compared, and when the value exceeds the preset range, the laser failure is determined, and the determination result is output.
The laser system of claim 9 further comprising:

When it is determined that the laser is faulty, the laser itself stops operating according to an internally preset fault handling procedure, or a control signal is sent to the laser by an external device to control the laser to stop running.
The laser system according to claim 8, wherein the external device is further configured to perform real-time processing on the receipt data after receiving the receipt data, and output a real-time processing result.
The laser system according to claim 11, wherein the external device comprises an interactive interface, and the outputting the real-time processing result by the external device comprises:

Displaying the processing result on the interactive interface or updating the processing result displayed last time in the interactive interface.
The laser system according to claim 11 or 12, wherein the outputting the real-time processing result by the external device further comprises:

A fault alarm is output when the processing result includes information that the laser operates abnormally, and the laser is controlled to stop working.
The laser system of claim 8 wherein:

The controller of the laser continuously transmits a data acquisition request to the optical path mechanism or each sensor at a certain time interval, and receives the data returned by the optical path mechanism or each sensor from time to time.