CN112704562A - Power detection device and method for laser therapeutic machine - Google Patents

Power detection device and method for laser therapeutic machine Download PDF

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Publication number
CN112704562A
CN112704562A CN202110048951.6A CN202110048951A CN112704562A CN 112704562 A CN112704562 A CN 112704562A CN 202110048951 A CN202110048951 A CN 202110048951A CN 112704562 A CN112704562 A CN 112704562A
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CN
China
Prior art keywords
laser
therapeutic machine
main control
laser therapeutic
power
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Pending
Application number
CN202110048951.6A
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Chinese (zh)
Inventor
毕进子
周斌
蔡宜洛
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Shanghai Institute of Laser Technology
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Shanghai Institute of Laser Technology
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Priority to CN202110048951.6A priority Critical patent/CN112704562A/en
Publication of CN112704562A publication Critical patent/CN112704562A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N5/0613—Apparatus adapted for a specific treatment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N5/067—Radiation therapy using light using laser light
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00696—Controlled or regulated parameters
    • A61B2018/00702—Power or energy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00773—Sensed parameters
    • A61B2018/00779—Power or energy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N2005/0626—Monitoring, verifying, controlling systems and methods

Abstract

The invention relates to a power detection device of a laser therapeutic machine, which comprises: the sampling circuit board comprises a laser power sampling circuit and an optical gate position sensor; the thermoelectric refrigerating sheet is connected with the sampling circuit board; the reflecting optical gate comprises a rotating electromagnet, a reflecting mirror mounting seat fixed on the rotating electromagnet and a 45-degree reflecting mirror adhered to the reflecting mirror mounting seat, wherein the 45-degree reflecting mirror is arranged in the transmission direction of laser, and the laser reflected by the 45-degree reflecting mirror can enter the thermoelectric refrigerating sheet; the sampling circuit board and the reflective optical gate are both connected with a main control board of the laser therapeutic machine, and the rotary electromagnet is powered on or powered off under the control of the main control board of the laser therapeutic machine to open or close the reflective optical gate. The invention also relates to a detection method of the laser therapeutic machine power detection device, and the laser therapeutic machine power detection device and the method can accurately and quickly measure the laser power.

Description

Power detection device and method for laser therapeutic machine
Technical Field
The invention belongs to the technical field of laser power or energy detection, and particularly relates to a power detection device of a laser therapeutic machine. The invention also relates to a detection method of the power detection device of the laser therapeutic machine.
Background
In laser medical instruments, power-on self-test is necessary. For continuous type lasers, detection of the laser output power is important; for a pulsed laser, single pulse energy detection of the laser is important. This is because: firstly, the output power/energy of the laser represents whether the laser works normally or not; secondly, the amount of output power/energy of the laser will directly affect the energy applied to the biological tissue of the human body, and if the energy exceeds the user setting value, the tissue to be treated will be accidentally injured, increasing the treatment risk, and if the energy does not reach the user setting value, the treatment effect may not be achieved.
In the prior art, in order to realize real-time detection of laser power/energy output by a laser therapeutic machine, a conventional design generally considers that a power meter or an energy meter is arranged in the machine, and the overall cost is high due to the higher price of the power meter or the energy meter. The existing similar products in foreign countries mainly have two conditions in power/energy detection, one is that only the rated power/energy test of the laser is used to confirm the maximum output capability of the laser during the self-detection of the system, then the set laser emission power/energy is detected before the laser emission, and during the laser emission, the laser output is not detected in real time, but the stability of the laser output is ensured by a non-optical power/energy mode, for example, the control of a closed-loop laser power supply is adopted, the detection mode is inaccurate, the real-time power/energy of the laser cannot be determined, and the detection error exists. In another case, two sets of detection systems are respectively used for startup detection during self-detection and real-time detection during light emitting, so that the detection cost is increased, and the terminal loss of the laser is increased.
Disclosure of Invention
The invention aims to overcome the defects of high cost, detection error and increased laser terminal loss in the prior art, and provides a power detection device and method for a laser therapeutic machine.
In order to achieve the purpose, the technical scheme of the application is as follows:
a power detection device for a laser therapeutic machine, comprising:
the sampling circuit board comprises a laser power sampling circuit and an optical gate position sensor;
the thermoelectric refrigerating sheet is connected with the sampling circuit board;
the reflecting optical gate comprises a rotating electromagnet, a reflecting mirror mounting seat fixed on the rotating electromagnet and a 45-degree reflecting mirror adhered to the reflecting mirror mounting seat, wherein the 45-degree reflecting mirror is arranged in the transmission direction of laser, and the laser reflected by the 45-degree reflecting mirror can enter the thermoelectric refrigerating sheet;
the sampling circuit board and the reflective optical gate are both connected with a main control board of the laser therapeutic machine, and the rotary electromagnet is powered on or powered off under the control of the main control board of the laser therapeutic machine to open or close the reflective optical gate.
The preferable technical scheme is as follows:
according to the power detection device of the laser therapeutic machine, the thermoelectric refrigerating sheet is used for converting the received optical radiation signal into an electric signal and transmitting the electric signal to the sampling circuit board.
When the reflecting optical gate is opened, the reflecting mirror mounting seat moves out of the optical gate position sensor.
When the reflecting optical gate is closed, at least a part of the reflecting mirror mounting seat enters the optical gate position sensor.
In the power detection device for laser therapeutic machine, the optical shutter position sensor is a groove-shaped optical coupling switch.
The invention also provides a detection method of the laser therapeutic machine power detection device, which is applied to the laser therapeutic machine power detection device and comprises the following steps:
the method comprises the following steps: the main control board of the laser therapeutic machine controls the rotary electromagnet to be powered off, the reflecting shutter is closed, at least one part of the reflector mounting seat enters the optical shutter position sensor, the optical shutter position sensor senses that the reflector mounting seat generates a position signal, and the sampling circuit board sends the position signal to the main control board of the laser therapeutic machine;
step two: the laser therapeutic machine controls the laser to emit laser with rated power, the laser is reflected by the 45-degree reflector and then enters the thermoelectric refrigerating sheet, and the thermoelectric refrigerating sheet converts the received optical radiation signal into an electric signal and transmits the electric signal to the sampling circuit board;
step three: the sampling circuit board samples the electric signal obtained in the step two, converts the electric signal into an optical radiation value serving as an initial optical radiation value LA1, and inputs the optical radiation value into the main control board of the laser therapeutic machine;
step four: the main control board of the laser therapeutic machine obtains a standard light radiation value LA2 according to the rated power of the laser output by the laser in the step two and a power-radiation light numerical value comparison table prestored in the main control board of the laser therapeutic machine, and inputs the standard light radiation value LA2 into the main control board of the laser therapeutic machine;
step five: the main control board of the laser therapeutic machine performs data operation on the initial light radiation value LA1 in the third step and the standard light radiation value LA2 in the fourth step, and judges whether the initial light radiation value LA1 and the standard light radiation value LA2 meet the requirement of a difference value of +/-10%. If yes, executing step six; if not, the main control panel of the laser therapeutic machine carries out alarm processing; wherein the error W1 is calculated by W1 ═ LA1-LA2)/LA 2;
step six: the main control board of the laser therapeutic machine controls the rotary electromagnet to be electrified, the reflecting optical gate is opened, one part of the reflector mounting seat in the reflecting optical gate is moved out of the optical gate position sensor of the sampling circuit board, the sampling circuit board sends the position signal to the main control board of the laser therapeutic machine, and the main control board of the laser therapeutic machine controls the laser to emit laser after confirming the signal.
The preferable technical scheme is as follows:
in the fourth step, the power-radiation light value comparison table is a value comparison table established by averaging the light radiation values corresponding to 10 consecutive tests under the same emission power value, wherein the emission power value is determined by the comparison measurement of an external standard power meter.
Compared with the prior art, the technical scheme contained in the application at least has the following technical effects:
(1) the invention not only can accurately and rapidly measure the laser power, but also can reduce the manufacturing cost of the laser therapeutic machine and increase the reliability of the system.
(2) The invention adopts the inverse process of the Peltier effect of the thermoelectric cooling plate (TEC) to detect the laser power, thereby greatly improving the influence of the laser wavelength on the optical detector.
(3) The invention has simple structure and convenient operation.
Drawings
FIG. 1 is a schematic diagram of the optical path operation of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is an electrical wiring diagram of the present invention;
FIG. 4 is a schematic diagram of a sampling circuit in the sampling circuit board of the present invention;
FIG. 5 is an oscilloscope sample plot of laser power measurement of a thermoelectric cooling chip;
FIG. 6 is a flow chart of the detection method of the power detection device of the laser therapeutic machine of the present invention;
wherein, 1, a laser; 2. a 45 ° mirror; 3. a thermoelectric refrigeration chip; 4. a beam combining lens; 5. aiming the light laser; 6. rotating the electromagnet; 7. a reflector mount; 8. and sampling the circuit board.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, 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 belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 5, in which fig. 1 is a schematic diagram of an optical path operation provided in an embodiment of the present invention, fig. 2 is a schematic structural diagram provided in an embodiment of the present invention, fig. 3 is an electrical connection diagram provided in an embodiment of the present invention, fig. 4 is a schematic diagram of a sampling circuit in a sampling circuit board provided in an embodiment of the present invention, fig. 5 is a sampling diagram of an oscilloscope for measuring laser power of a thermoelectric cooling plate provided in an embodiment of the present invention, and fig. 6 is a flowchart of a detection method of a power detection apparatus of a laser therapy apparatus provided in an embodiment of the present invention.
As one aspect of the invention, the power detection device for the laser therapeutic machine comprises a sampling circuit board 8, a thermoelectric refrigerating sheet 3 and a reflecting optical shutter.
The sampling circuit board 8 comprises a laser power sampling circuit and an optical gate position sensor; the thermoelectric refrigerating sheet 3 is connected with the sampling circuit board 8; including rotary electromagnet 6, fix reflector mount pad 7 on the rotary electromagnet 6 and bond 45 speculum 2 on the reflector mount pad 7, 45 speculum 2 is on the transmission direction of laser, the warp laser after 45 speculum 2 reflects can incide in the thermoelectric refrigeration piece 3.
The sampling circuit board 8 and the reflective optical gate are both connected with a main control panel of the laser therapeutic machine, and the rotary electromagnet 6 is powered on or powered off under the control of the main control panel of the laser therapeutic machine to realize the opening or closing of the reflective optical gate.
The detection object of the detection device in the present embodiment is the current output power of the laser in the laser therapy apparatus, wherein the light source generating the laser in the laser therapy apparatus is the semiconductor laser 1 in the present embodiment, and in the present embodiment, the laser light source is not limited to the semiconductor laser 1, and any light source means capable of generating the laser can be adopted.
In this embodiment, the reflective shutter is connected to the main control board of the laser therapeutic apparatus, and more specifically, the rotary electromagnet 6 is connected to the main control board of the laser therapeutic apparatus. The connection relationship between the two functions as follows: under the control of the main control panel of the laser therapeutic machine, the rotary electromagnet 6 is powered on or powered off to realize the opening or closing of the reflective optical gate. More specifically, under the control of the main control board of the laser therapeutic machine, when the rotary electromagnet 6 is powered off, the reflecting shutter is closed, and at least one part of the reflector mounting seat 7 enters the shutter position sensor; when the rotary electromagnet 6 is powered on, the reflective shutter opens and the mirror mount 7 entering the shutter position sensor moves out of the shutter position sensor.
In a preferred embodiment, the shutter position sensor is a slot-type photo-coupler switch. The slot-type optical coupling switch belongs to the prior art, is also called as a slot-type photoelectric switch or a correlation-type photoelectric switch by engineering technicians, and is also a device which takes light as a medium, and detects the position, the existence and the like of an object by using a light path between a luminous body and a luminous body to shield or using the brightness change of reflected light as a signal. The groove-shaped optical coupler is also formed by combining an infrared transmitting tube and an infrared receiving tube. It is contactless with proximity switch the same, and the restriction of detected body is few, and detection distance is long, uses extensively, and the concrete model that slot type opto-coupler switch adopted in this embodiment is H2010.
In the detection method of the power detection device of the laser therapeutic machine in the prior art, the adopted optical detector is generally a diode-based optical detector or a thermocouple-based optical detector, and because the voltage generated by the diode-based optical detector is very small, the sampling, holding and amplifying are required in the detection process; in the embodiment, the thermoelectric cooling plate is used as the optical detector, the characteristic thermosensitive characteristic of the thermoelectric cooling plate is utilized (that is, if a temperature difference exists between a hot surface and a cold surface of the TEC, a potential difference is generated between the two interfaces), and the inverse process of the peltier effect of the thermoelectric cooling plate (TEC) is utilized to detect the laser power, so that the influence of the laser wavelength on the optical detector is greatly improved, and meanwhile, the voltage signal generated by the thermoelectric cooling plate does not need to be amplified, and the response speed is higher.
More specifically, the power detection device of the laser therapeutic machine in the embodiment further includes an aiming light laser 51 and a beam combining lens 4, wherein a light beam emitted by the aiming light laser 51 can be combined with laser light emitted by the laser therapeutic machine through the beam combining lens 4.
On the basis, when the rotary electromagnet 6 is powered off, the reflecting gate is closed, at least one part of the reflector mounting seat 7 enters the optical gate position sensor, at the moment, the thermoelectric refrigerating plate 3 receives an optical radiation signal and converts the received optical radiation signal into an electric signal, and the sampling circuit board 8 samples the obtained electric signal and sends the electric signal to the microprocessor in the main control board of the laser therapeutic machine for processing.
When the rotary electromagnet 6 is powered on, the reflective shutter is opened, the reflector mounting seat 7 entering the shutter position sensor is moved out of the shutter position sensor, and the light beam emitted by the aiming light laser 51 and the laser emitted from the laser therapeutic machine are combined at the beam combining lens 4.
As apparent from the above description, the present invention samples the converted electrical signal by the sampling circuit board 8. The specific sampling circuit of the sampling circuit board 8 in the invention is as follows:
the sampling circuit 8 of the sampling circuit board is composed of a thermoelectric cooling plate TEC, a resistor R93, a resistor R94, a resistor R96, a capacitor C63, a capacitor C64, a feedback resistor R92, a capacitor C61, an operational amplifier U23A, an operational amplifier U23B, a resistor R95, a capacitor C62 and two photodiodes D19.
The thermoelectric cooling plate TEC comprises a port 1 and a port 2, wherein the port 2 is connected with a reference ground of a system power supply, the port 1 is connected with the reference ground of the system power supply through a capacitor C63 and is simultaneously connected with a positive phase input end of an operational amplifier U23A through a resistor R96, a resistor R94 is connected between the port 1 and the port 2 of the thermoelectric cooling plate TEC in parallel, the positive phase input end of the operational amplifier U23A is connected with the reference ground of the system power supply through a capacitor C64, an inverting input end of the operational amplifier U23A is connected with the reference ground of the system power supply through a resistor R93 and is simultaneously connected with an output end of the operational amplifier U23A and a positive phase input end of the operational amplifier U23B through a resistor R92, an inverting input end of the operational amplifier U23B is connected with an output end of the operational amplifier U23B and one end of a resistor R95, wherein the other end of the resistor R95 is, the microprocessor MCU is connected with two photodiodes D19 in parallel, and the two photodiodes D19 form a limiting circuit, so that the safety and reliability of the system are ensured.
On the basis, the invention also provides a detection method of the laser therapeutic machine power detection device, which is applied to the laser therapeutic machine power detection device and comprises the following steps:
the method comprises the following steps: the main control board of the laser therapeutic machine controls the rotary electromagnet to be powered off, the reflecting shutter is closed, at least one part of the reflector mounting seat enters the optical shutter position sensor, the optical shutter position sensor senses that the reflector mounting seat generates a position signal, and the sampling circuit board sends the position signal to the main control board of the laser therapeutic machine;
step two: the laser therapeutic machine controls the laser to emit laser with rated power, the laser is reflected by the 45-degree reflector and then enters the thermoelectric refrigerating sheet, and the thermoelectric refrigerating sheet converts the received optical radiation signal into an electric signal and transmits the electric signal to the sampling circuit board;
step three: the sampling circuit board samples the electric signal obtained in the step two, converts the electric signal into an optical radiation value serving as an initial optical radiation value LA1, and inputs the optical radiation value into the main control board of the laser therapeutic machine;
step four: the main control board of the laser therapeutic machine obtains a standard light radiation value LA2 according to the rated power of the laser output by the laser in the step two and a power-radiation light value comparison table prestored in the main control board of the laser therapeutic machine, and inputs the standard light radiation value LA2 into the main control board of the laser therapeutic machine, wherein the power-radiation light value comparison table is a value comparison table obtained by establishing an average value of light radiation values corresponding to 10 times of continuous tests under the same emission power value, and the determination of the emission power value is obtained by the comparison and measurement of an external standard power meter;
step five: the main control board of the laser therapeutic machine performs data operation on the initial light radiation value LA1 in the third step and the standard light radiation value LA2 in the fourth step, and judges whether the initial light radiation value LA1 and the standard light radiation value LA2 meet the requirement of a difference value of +/-10%. If yes, executing step six; if not, the main control panel of the laser therapeutic machine carries out alarm processing; wherein the error W1 is calculated by W1 ═ LA1-LA2)/LA 2;
step six: the main control board of the laser therapeutic machine controls the rotary electromagnet to be electrified, the reflecting optical gate is opened, one part of the reflector mounting seat in the reflecting optical gate is moved out of the optical gate position sensor of the sampling circuit board, the sampling circuit board sends the position signal to the main control board of the laser therapeutic machine, and the main control board of the laser therapeutic machine controls the laser to emit laser after confirming the signal.
In the fourth step, the power-radiation light value comparison table is established in the following manner:
the rotary electromagnet is controlled to be powered off by the main control board of the laser therapeutic machine, the reflecting optical gate is closed, at least one part of a reflector mounting seat in the reflecting optical gate enters an optical gate position sensor of the sampling circuit board, the sampling circuit board sends the position signal to the main control board of the laser therapeutic machine, after confirming the signal, the main control board of the laser therapeutic machine controls the laser to emit laser, the laser enters the thermoelectric cooling plate after passing through the 45-degree reflecting mirror, the thermoelectric cooling plate converts the received optical radiation signal into an electric signal and transmits the electric signal to the sampling circuit board, the sampling circuit board samples the electric signal obtained in the step two, the electric signal is converted into an optical radiation value through the comparison and measurement of an external standard power meter, and the optical radiation value is sent to a microprocessor of the main control board of. The data obtained by 10 tests with the same power is a group, the microprocessor respectively receives the light radiation value corresponding to each group of tests, and the microprocessor carries out average operation on the 10 test results of each group to obtain the average light radiation value of the group. And writing a comparison table of different emission powers and average light radiation values in the microprocessor in sequence according to the mode.
The detection method of the laser therapeutic machine power detection device can accurately and quickly measure the laser power, reduce the manufacturing cost of the laser therapeutic machine detection device and increase the reliability of the system.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (7)

1. A power detection device of a laser therapeutic machine is characterized in that: the method comprises the following steps:
the sampling circuit board comprises a laser power sampling circuit and an optical gate position sensor;
the thermoelectric refrigerating sheet is connected with the sampling circuit board;
the reflecting optical gate comprises a rotating electromagnet, a reflecting mirror mounting seat fixed on the rotating electromagnet and a 45-degree reflecting mirror adhered to the reflecting mirror mounting seat, wherein the 45-degree reflecting mirror is arranged in the transmission direction of laser, and the laser reflected by the 45-degree reflecting mirror can enter the thermoelectric refrigerating sheet;
the sampling circuit board and the reflective optical gate are both connected with a main control board of the laser therapeutic machine, and the rotary electromagnet is powered on or powered off under the control of the main control board of the laser therapeutic machine to open or close the reflective optical gate.
2. The power detector of claim 1, wherein the thermoelectric cooling plate is configured to convert the received optical radiation signal into an electrical signal and transmit the electrical signal to the sampling circuit board.
3. The power detector of claim 1, wherein said mirror mount moves out of said shutter position sensor when said reflective shutter is open.
4. The power detector of claim 1, wherein at least a portion of said mirror mount enters said shutter position sensor when said reflective shutter is closed.
5. The power detection device as claimed in any one of claims 1 to 4, wherein the shutter position sensor is a slot type optical coupling switch.
6. A detection method of a power detection device of a laser therapeutic machine is applied to the power detection device of the laser therapeutic machine as claimed in any one of claims 1 to 4, and is characterized by comprising the following steps:
the method comprises the following steps: the main control board of the laser therapeutic machine controls the rotary electromagnet to be powered off, the reflecting shutter is closed, at least one part of the reflector mounting seat enters the optical shutter position sensor, the optical shutter position sensor senses that the reflector mounting seat generates a position signal, and the sampling circuit board sends the position signal to the main control board of the laser therapeutic machine;
step two: the laser therapeutic machine controls the laser to emit laser with rated power, the laser is reflected by the 45-degree reflector and then enters the thermoelectric refrigerating sheet, and the thermoelectric refrigerating sheet converts the received optical radiation signal into an electric signal and transmits the electric signal to the sampling circuit board;
step three: the sampling circuit board samples the electric signal obtained in the step two, converts the electric signal into an optical radiation value serving as an initial optical radiation value LA1, and inputs the optical radiation value into the main control board of the laser therapeutic machine;
step four: the main control board of the laser therapeutic machine obtains a standard light radiation value LA2 according to the rated power of the laser output by the laser in the step two and a power-radiation light numerical value comparison table prestored in the main control board of the laser therapeutic machine, and inputs the standard light radiation value LA2 into the main control board of the laser therapeutic machine;
step five: the main control board of the laser therapeutic machine performs data operation on the initial light radiation value LA1 in the third step and the standard light radiation value LA2 in the fourth step, and judges whether the error W1 between the initial light radiation value LA1 and the standard light radiation value LA2 meets +/-10%. If yes, executing step six; if not, the main control panel of the laser therapeutic machine carries out alarm processing; wherein the error W1 is calculated by W1 ═ LA1-LA2)/LA 2;
step six: the main control board of the laser therapeutic machine controls the rotary electromagnet to be electrified, the reflecting optical gate is opened, one part of the reflector mounting seat in the reflecting optical gate is moved out of the optical gate position sensor of the sampling circuit board, the sampling circuit board sends the position signal to the main control board of the laser therapeutic machine, and the main control board of the laser therapeutic machine controls the laser to emit laser after confirming the signal.
7. The method as claimed in claim 5, wherein in step four, the power-radiation light value comparison table is a value comparison table established by averaging the light radiation values corresponding to 10 consecutive tests with the same emission power value, and the emission power value is determined by comparison measurement of an external standard power meter.
CN202110048951.6A 2021-01-14 2021-01-14 Power detection device and method for laser therapeutic machine Pending CN112704562A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110048951.6A CN112704562A (en) 2021-01-14 2021-01-14 Power detection device and method for laser therapeutic machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110048951.6A CN112704562A (en) 2021-01-14 2021-01-14 Power detection device and method for laser therapeutic machine

Publications (1)

Publication Number Publication Date
CN112704562A true CN112704562A (en) 2021-04-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110048951.6A Pending CN112704562A (en) 2021-01-14 2021-01-14 Power detection device and method for laser therapeutic machine

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CN (1) CN112704562A (en)

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