Laser equipment monitoring method and monitoring device

Abstract

The present invention discloses a monitoring method and monitoring device for laser equipment. The monitoring device includes: a current sensor, the current sensor is provided with a threading hole, and the measured wire of the laser equipment passes through the threading hole; the measured wire is used to transmit the charge and discharge current of the front-end capacitor of the laser equipment; a shaping circuit, the shaping circuit is connected to the current sensor; and a microprocessor, the microprocessor is connected to the shaping circuit. Because the laser equipment needs to charge the front-end capacitor on the equipment before emitting light, the power supply line used to transmit the charge and discharge current of the front-end capacitor on the laser equipment is passed through the threading hole of the current sensor, so that the current sensor senses the alternating current and generates an induction signal, which is shaped by the shaping circuit and output to the microprocessor for analysis and monitoring. In this way, without changing the laser equipment itself, according to the use characteristics of the laser equipment itself, the monitoring device can monitor the use of the laser equipment, thereby meeting market demand.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment monitoring, and in particular to a monitoring method and a monitoring device for laser equipment. Background Art

[0002] At present, laser equipment used for beauty treatments is being used more and more widely in the medical aesthetics field. Due to the relatively high price of the equipment, a rental-instead-of-sale model is usually adopted. Under this usage model, there is a need to monitor the use of laser equipment. However, since this type of laser equipment usually does not have networking capabilities, it is impossible to report the use of the equipment.

[0003] If networking functionality is added to a laser device, the device itself needs to be changed. However, this type of laser device is a medical device, and the certificate application cycle for adding networking functionality is relatively long, which cannot meet market demand. Summary of the Invention

[0004] The purpose of the present invention is to propose a monitoring method and monitoring device for laser equipment in response to the above-mentioned deficiencies in the prior art, and this purpose is achieved through the following technical solutions.

[0005] A first aspect of the present invention provides a monitoring device for laser equipment, the monitoring device comprising:

[0006] A current sensor, wherein the current sensor is provided with a wire threading hole, and the measured wire of the laser device passes through the wire threading hole; the current sensor is used to sense the AC current on the measured wire and output a sensing signal;

[0007] a shaping circuit, the shaping circuit being connected to the current sensor and configured to shape the induced signal output by the current sensor and output a square wave signal;

[0008] A microprocessor is connected to the shaping circuit, and is used to monitor the use of the laser device according to the change characteristics of the square wave signal output by the shaping circuit.

[0009] In some embodiments of the present application, the monitoring device further includes: a wireless module connected to the microprocessor, for uploading the usage monitored by the microprocessor to a cloud server.

[0010] In some embodiments of the present application, the shaping circuit includes a comparator, which is provided with a waveform input terminal, a reference input terminal, and a shaping output terminal; wherein the waveform input terminal is connected to the current sensor; the reference input terminal is grounded after passing through a first resistor, and the reference input terminal is connected to a power supply after passing through a second resistor; and the shaping output terminal is connected to the microprocessor.

[0011] A second aspect of the present invention provides a method for monitoring laser equipment, which is applied to a microprocessor of the monitoring device described in the first aspect. The method comprises:

[0012] Receive the square wave signal output by the shaping circuit;

[0013] The use of the laser device is monitored according to the change characteristics of the square wave signal.

[0014] In some embodiments of the present application, monitoring the usage of the laser device according to the changing characteristics of the square wave signal includes:

[0015] When a rising edge of the square wave signal is detected, a preset first timer is started to start timing; before the first timer overflows, the number of falling edges of the square wave signal is detected; when the first timer overflows, if it is determined that the laser device is in use based on the detected number of times, the number of times the laser device is used is increased by 1, and the process of starting the first timer to start timing when a rising edge of the square wave signal is detected is returned to execution.

[0016] In some embodiments of the present application, determining that the laser device is in use based on the number of detected times includes:

[0017] If the number is greater than the preset number, it is determined that the laser device is in use; if the number is less than or equal to the preset number, the pulse width between the rising edge and the first falling edge is obtained, and whether the laser device is in use is determined based on the pulse width.

[0018] In some embodiments of the present application, determining whether the laser device is in use based on the pulse width includes:

[0019] If the pulse width is within the threshold range, it is determined that the laser device is in use; if the pulse width is outside the threshold range, it is determined that the laser device is not in use.

[0020] In some embodiments of the present application, obtaining the pulse width between the rising edge and the first falling edge includes:

[0021] When a rising edge of the square wave signal is detected, the system time when the rising edge is detected is recorded as the first time; before the first timer overflows, the system time when the first falling edge is detected is recorded as the second time; and the pulse width is determined based on the first time and the second time.

[0022] In some embodiments of the present application, obtaining the pulse width between the rising edge and the first falling edge includes:

[0023] When a rising edge of the square wave signal is detected, recording a first count value of a preset second timer;

[0024] Before the first timer overflows, when a first falling edge is detected, a second count value of the second timer is recorded, and the number of overflows of the second timer between the rising edge and the first falling edge is obtained; the pulse width is determined based on the first count value, the second count value, and the number of overflows; wherein the overflow time of the first timer is greater than the overflow time of the second timer.

[0025] In some embodiments of the present application, the method further includes: uploading the monitored usage to a cloud server via a wireless module at every preset period.

[0026] Based on the laser equipment monitoring method and monitoring device described in the first and second aspects above, the present invention has at least the following beneficial effects or advantages:

[0027] Because the laser device needs to charge the front-end capacitor on the device before emitting light, the power supply line (i.e., the measured wire) used to transmit the charging and discharging current of the front-end capacitor on the laser device is passed through the wire hole of the current sensor. The current sensor can sense the AC current on the power supply line and generate an induction signal output. The induction signal is shaped by the shaping circuit and output to the microprocessor. The microprocessor monitors the usage of the laser device according to the changing characteristics of the square wave signal received in real time.

[0028] In this way, without changing the laser equipment itself, the monitoring device can monitor the usage of the laser equipment according to the usage characteristics of the laser equipment itself, thereby meeting market usage needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0030] Figure 1 This is a schematic structural diagram of a monitoring device for laser equipment according to an exemplary embodiment of the present invention;

[0031] Figure 2 This is a flow chart of an embodiment of a method for monitoring a laser device according to an exemplary embodiment of the present invention;

[0032] Figure 3This is a schematic diagram of a square wave signal waveform containing multiple pulses at one time according to the present invention;

[0033] Figure 4 This is a schematic diagram of a square wave signal waveform containing a single pulse for one use according to the present invention;

[0034] Figure 5 The figure is a flowchart showing an implementation of monitoring usage conditions based on a square wave signal according to an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0038] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0039] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] In order to solve the problem that the laser equipment cannot report the equipment usage due to the lack of networking function, this application proposes a monitoring device for laser equipment, such as Figure 1 As shown, the monitoring device includes a current sensor 10, a shaping circuit 20, and a microprocessor 30; the shaping circuit 20 is connected to both the current sensor 10 and the microprocessor 30, and is used to shape the induced signal transmitted from the current sensor 10, and transmit the shaped square wave signal to the microprocessor 30 for analysis and judgment.

[0041] The current sensor 10 is provided with a threading hole. When a wire is passed through the threading hole, the current sensor 10 can sense the electromagnetic field generated by the AC current passing through the wire, thereby outputting an induced signal. Based on this, by passing the measured wire of the laser device through the threading hole of the current sensor 10, the measured wire is used to transmit the charging and discharging current of the front-end capacitor of the laser device.

[0042] In the embodiment of the present application, since the laser device needs to charge the front-end capacitor on the device before emitting light, the power supply line (i.e., the measured wire) used to transmit the charging and discharging current of the front-end capacitor on the laser device is passed through the wire hole of the current sensor, so that the current sensor can sense the AC current on the power supply line and generate an induction signal output. The induction signal is shaped by the shaping circuit and output to the microprocessor. The microprocessor monitors the usage of the laser device according to the changing characteristics of the square wave signal received in real time.

[0043] In this way, without changing the laser equipment itself, the monitoring device can monitor the usage of the laser equipment according to the usage characteristics of the laser equipment itself, thereby meeting market usage needs.

[0044] It should be supplemented that, since the capacitance of the front-end capacitor before the laser device emits light is relatively large, its charging current is also relatively large, so the current sensor 10 in the monitoring device can sense a relatively obvious sensing signal.

[0045] In one possible implementation, Figure 1 As shown, the monitoring device may further include a wireless module 40 connected to the microprocessor 30, so that the microprocessor 30 can upload the monitored usage of the laser device to the cloud server through the wireless module 40, so that the user can query the usage of the laser device in real time.

[0046] Those skilled in the art will appreciate that the networking mode of the wireless module 40 may be any one of Bluetooth networking mode, ZigBee networking mode, infrared networking mode, and 4G networking mode, and this application does not limit this.

[0047] In one possible implementation, Figure 1 As shown, the shaping circuit 20 includes a comparator having a waveform input terminal B, a reference input terminal A, and a shaping output terminal C.

[0048] Among them, the waveform input terminal B is connected to the current sensor 10, the reference input terminal A is grounded after passing through the first resistor R1, and the reference input terminal A is also connected to the power supply VCC after passing through the second resistor R2, and the shaping output terminal C is connected to the microprocessor 30.

[0049] It should be noted that the first resistor R1 and the second resistor R2 are used to divide the voltage of the power supply VCC so that the reference input terminal A of the comparator inputs a suitable reference voltage.

[0050] In this embodiment, the sensing signal output by the current sensor 10 is in the shape of a bell wave. In order to facilitate accurate analysis by the microprocessor 30, after receiving the sensing signal output by the current sensor 10, the comparator in the shaping circuit 20 compares the sensing signal with the reference voltage of the reference input terminal A. If the sensing signal is greater than or equal to the reference voltage, it is shaped into a high level. If the sensing signal is less than the reference voltage, it is shaped into a low level. After the shaping processing by the comparator, a square wave signal that is conducive to detection and analysis is output from the shaping output terminal C.

[0051] Based on the above Figure 1 The following description of the monitoring device shown in Figure 1 The monitoring device shown clearly and completely describes the analysis process of the microprocessor in the monitoring device.

[0052] Figure 2 This is a flow chart of an embodiment of a monitoring method for laser equipment according to an exemplary embodiment of the present invention. The monitoring method is applied to the above Figure 1 The microprocessor 30 in the monitoring device shown is as follows Figure 2 As shown, the monitoring method of the laser equipment includes the following steps:

[0053] Step 201: Receive a square wave signal output by a shaping circuit.

[0054] Among them, the square wave signal output by the shaping circuit has a relatively steep level change, and the level change edge is easily detected in the microprocessor.

[0055] Step 202: Monitor the usage of the laser device according to the changing characteristics of the square wave signal.

[0056] Among them, each time the laser device is used, the level of the square wave signal output by the shaping circuit will change.

[0057] Through experimental testing, it was found that there are two changes in the single use of laser equipment, such as Figure 3 As shown in the figure, each time the laser device is used, the waveform changes collected are characterized by multiple pulses each time it is used, such as Figure 4 As shown in FIG, each time the laser device is used, the waveform change characteristics collected are a single pulse each time. These two change characteristics represent two different ways of using the laser device, resulting in two different waveform change characteristics being collected.

[0058] Based on the above analysis, in a possible implementation, such as Figure 5 As shown in FIG, the implementation process of monitoring the use of laser equipment according to the changing characteristics of the square wave signal includes the following steps:

[0059] Step 2021: When a rising edge of the square wave signal is detected, a preset first timer is started to begin timing.

[0060] Among them, the above Figure 3 and Figure 4 It can be seen that each time the laser device is used, the level will suddenly rise, then continue for a period of time and then suddenly drop. In some cases, the level may drop multiple times. Therefore, at the beginning of the initial detection, the microprocessor capture mode is rising edge. When the rising edge of the square wave signal is detected, a timer (i.e., the first timer) is started to count.

[0061] It should be noted that the overflow time of the first timer is set to the maximum width of the waveform of the laser device during one use, and the maximum duration can be obtained through experimental testing.

[0062] Optionally, experimental tests have found that the waveform width of a laser device used once is between 80 milliseconds and 900 milliseconds, so the overflow time of the first timer can be specifically set to 900 milliseconds.

[0063] Step 2022: Before the first timer overflows, detect the number of falling edges of the square wave signal.

[0064] Among them, when the microprocessor is in the rising edge capture mode, when the rising edge of the square wave signal is detected, the capture mode is immediately changed to the falling edge, and the falling edge capture mode always detects the falling edge of the square wave signal during the timing of the first timer, and each time a falling edge is detected, the number of falling edges is increased by 1.

[0065] Step 2023: When the first timer overflows, if it is determined that the laser device is used based on the number of times detected, the number of times the laser device is used is increased by 1, and the process of executing step 2021 is continued.

[0066] When the first timer overflows, it indicates that the laser device has finished using the detection device once.

[0067] Due to the instability of the device operation, there may be fluctuations in the square wave signal, resulting in false detection of the use of the laser device. Therefore, it is necessary to further determine whether the laser device is actually in use based on the number of detected falling edges.

[0068] In one possible implementation, in the process of determining whether the laser device is in use based on the number of detected times, the number of times the falling edge is detected is compared with a preset number. If the number is greater than the preset number, it can be determined that the laser device is actually in use. If the number is less than or equal to the preset number, the pulse width between the rising edge and the first falling edge is further obtained, and whether the laser device is actually in use is determined based on the pulse width.

[0069] The preset number of times is used to distinguish different waveform changes.

[0070] Optional, by the above Figure 3 and Figure 4 As shown, one includes multiple pulses, that is, multiple falling edges, and the other includes a single pulse, that is, one falling edge, so the preset number of times can be specifically set to 1.

[0071] That is to say, if the number of falling edges detected is greater than 1, it means that there are multiple pulses within the entire maximum waveform width, that is, Figure 3 In this way, it can be directly determined without doubt that the laser device is actually in use; if the number of falling edges detected is less than or equal to 1, it means that only a single pulse is contained in the entire maximum waveform width, that is, the above Figure 4 However, in order to exclude the single pulse caused by slight fluctuations in the signal, it is necessary to further determine whether the laser device is actually in use based on the pulse width between the rising edge and the first falling edge.

[0072] In one possible implementation, a threshold range of pulse width under normal actual usage conditions can be pre-set, and the pulse width between the rising edge and the first falling edge can be compared with the threshold range. If the pulse width is within the threshold range, it is determined that the laser device is actually in use; if the pulse width is outside the threshold range, it is determined that the laser device is not actually in use.

[0073] Optionally, the above experimental tests found that the waveform width of the laser device when used once is between 80 milliseconds and 900 milliseconds. That is to say, if the laser device only generates one pulse in a single use, its width also needs to meet the range of 80 milliseconds to 900 milliseconds. If the width is less than 80 milliseconds, it means that the pulse detected this time is caused by a slight fluctuation in the signal and does not belong to the actual use of the laser device. Therefore, the threshold range can be specifically set to 80 milliseconds to 900 milliseconds.

[0074] Regarding the process of obtaining the pulse width between the rising edge and the first falling edge, in one possible implementation, when a rising edge is detected in a square wave signal, the system time when the rising edge is detected can be recorded as the first time, and before the first timer overflows, the system time when the first falling edge is detected can be recorded as the second time, so that the pulse width can be determined based on the first time and the second time.

[0075] The system time refers to the time controlled by the microprocessor clock cycle.

[0076] In another possible implementation, the system time of a microprocessor is usually more accurate at the second level, but its accuracy is relatively low at the millisecond level. In this application, the detection of pulse width is at the millisecond level. In order to improve the detection accuracy of pulse width, detection is performed by setting a timer.

[0077] The specific implementation process includes: when a rising edge of the square wave signal is detected, recording the first count value of the preset second timer, and before the first timer overflows, when the first falling edge is detected, recording the second count value of the second timer, and then obtaining the number of overflows of the second timer between the rising edge and the first falling edge, and determining the pulse width based on the first count value, the second count value, and the number of overflows.

[0078] Among them, the second timer is always turned on and running during the entire monitoring process of the microprocessor. Every time the second timer overflows, it restarts from 0. Therefore, when a rising edge is detected, it is necessary to record the count of the second timer once, and record the count of the second timer again when a falling edge is detected for the first time. The pulse width can be calculated based on these two counts and the number of overflows of the second timer during this counting period. The specific calculation formula is as follows:

[0079] T=n*L+|t1-t2|

[0080] In the above formula, T represents the pulse width, n represents the overflow number of the second timer, L represents the overflow time of the second timer, and t1 and t2 represent two count values, namely the first count value and the second count value, respectively.

[0081] The overflow time of the first timer must be greater than the overflow time of the second timer.

[0082] It should be noted that the monitored usage status will be uploaded to the cloud server via the wireless module every preset period so that users can query the usage status of the laser equipment in real time.

[0083] Furthermore, the cloud server can also prompt users of laser equipment based on the uploaded usage data. For example, if a user purchases a package for 1,000 uses of the laser equipment, when the cloud server receives the reported number of times the user has used the laser equipment, it subtracts the number of uses from the 1,000 times purchased by the user to obtain the remaining number of uses. The cloud server then transmits the remaining number of uses to the wireless module, and then sends the remaining number of uses to the user via the wireless module.

[0084] At this point, the above is completed Figure 2 The monitoring process of the laser equipment shown, without changing the laser equipment itself, collects the usage information of the laser equipment by using a monitoring device according to the usage characteristics of the laser equipment, and converts it into a square wave signal that is easy to detect and analyze. The usage of the laser equipment is monitored according to the changing characteristics of the square wave signal, thereby meeting market usage needs.

[0085] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention that follow from the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

[0086] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0087] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A monitoring device for laser equipment, characterized in that: The monitoring device comprises: A current sensor, wherein the current sensor is provided with a wire threading hole, through which the measured wire of the laser device passes, and the measured wire is used to transmit the charge and discharge current of the front-end capacitor of the laser device; the current sensor is used to sense the AC current on the measured wire and output a sensing signal; a shaping circuit, the shaping circuit being connected to the current sensor and configured to shape the induced signal output by the current sensor and output a square wave signal; A microprocessor is connected to the shaping circuit, and is used to monitor the usage of the laser device according to the change characteristics of the square wave signal output by the shaping circuit, wherein the usage includes the number of times the laser device is used.

2. The monitoring device according to claim 1, characterized in that The monitoring device further comprises: The wireless module connected to the microprocessor is used to upload the usage monitored by the microprocessor to the cloud server.

3. The monitoring device according to claim 1, characterized in that The shaping circuit includes a comparator, which is provided with a waveform input terminal, a reference input terminal, and a shaping output terminal; Wherein, the waveform input terminal is connected to the current sensor; The reference input terminal is grounded after passing through a first resistor, and the reference input terminal is connected to a power supply after passing through a second resistor; The shaped output is connected to the microprocessor.

4. A method for monitoring laser equipment, characterized in that: The microprocessor applied to the monitoring device according to any one of claims 1 to 3, wherein the method comprises: Receive the square wave signal output by the shaping circuit; The usage of the laser device is monitored according to the changing characteristics of the square wave signal; the usage includes the number of times it is used.

5. The method according to claim 4, characterized in that The monitoring of the use of the laser device according to the change characteristics of the square wave signal includes: When a rising edge of the square wave signal is detected, a preset first timer is started to start timing; Before the first timer overflows, detecting the number of falling edges of the square wave signal; When the first timer overflows, when it is determined that the laser device is used based on the detected number of times, the number of times the laser device is used is increased by 1, and the process of starting the first timer to start timing when a rising edge of the square wave signal is detected is returned to execution.

6. The method according to claim 5, characterized in that The determining, based on the number of detected times, that the laser device is in use includes: If the number of times is greater than a preset number of times, it is determined that the laser device is used; If the number is less than or equal to the preset number, the pulse width between the rising edge and the first falling edge is obtained, and whether the laser device is in use is determined based on the pulse width.

7. The method according to claim 6, characterized in that The determining, based on the pulse width, whether the laser device is in use includes: If the pulse width is within a threshold range, determining that the laser device is in use; If the pulse width is outside a threshold range, it is determined that the laser device is not in use.

8. The method according to claim 6, characterized in that The obtaining of the pulse width between the rising edge and the first falling edge includes: When a rising edge of the square wave signal is detected, the system time at which the rising edge is detected is recorded as the first time; Before the first timer overflows, the system time when the first falling edge is detected is recorded as the second time; The pulse width is determined according to the first time and the second time.

9. The method according to claim 6, characterized in that The obtaining of the pulse width between the rising edge and the first falling edge includes: When a rising edge of the square wave signal is detected, recording a first count value of a preset second timer; Before the first timer overflows, when a first falling edge is detected, recording a second count value of the second timer, and obtaining the number of overflows of the second timer between the rising edge and the first falling edge; determining the pulse width according to the first count value, the second count value, and the number of overflows; The overflow time of the first timer is greater than the overflow time of the second timer.

10. The method according to claim 4, characterized in that The method further comprises: The monitored usage is uploaded to the cloud server via the wireless module at preset intervals.

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