CN115996497A - Cold light source system and method with light-emitting compensation function - Google Patents
Cold light source system and method with light-emitting compensation function Download PDFInfo
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- CN115996497A CN115996497A CN202211527938.XA CN202211527938A CN115996497A CN 115996497 A CN115996497 A CN 115996497A CN 202211527938 A CN202211527938 A CN 202211527938A CN 115996497 A CN115996497 A CN 115996497A
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Abstract
The invention relates to a cold light source system with a light-emitting compensation function and a method thereof, belonging to the technical field of medical cold light sources, and relating to a light guide beam. The invention can accurately detect the light intensity of the light source module and the light guide beam, automatically perform dimming compensation after attenuation, maintain the stable light output of the system, and has simple system operation and convenient use in an operating room.
Description
Technical Field
The invention relates to the technical field of medical cold light sources, in particular to a cold light source system with a light-emitting compensation function and a method.
Background
In recent years, due to the popularization of endoscopic surgery, there is also an increasing demand for cold light source devices for medical use. Because most of medical cold light sources use semiconductor light-emitting sources, certain aging phenomenon exists after long-term use, the emergent light intensity is attenuated and becomes dark gradually, and the imaging effect of an endoscope system is further affected. As a bridge for connecting the cold light source and the endoscope, the quality of the light source transmission performance of the light guide beam also directly influences the use effect of the whole endoscope system. However, in the actual use process, the light guide beam needs to be subjected to high-temperature pressure steam sterilization and low-temperature plasma sterilization frequently, so that the light guide beam is gradually aged, and the light transmission end face is easy to wear after being plugged and pulled out for multiple times, so that the light source transmission performance is reduced. Therefore, a cold light source system is needed, which not only can detect the light intensity, but also can timely compensate the reduced light emission, and maintain the stable light emission of the system.
There is provided in the prior art a cold light source with a photometry mechanism, the cold light source comprising: the device comprises a light emitting module, a light measuring module, a control circuit board, a driving circuit board and the like, wherein the driving circuit board drives the light emitting module to emit light, and the light measuring module detects the luminous flux of the light. Although the device can realize the detection of the emergent light intensity of the cold light source, the device has the defects that further aging compensation measures are not needed after the detection, the aging attenuation detection and compensation of the light guide beam cannot be realized, and the overall performance of the cold light source system cannot be improved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a cold light source system and a method with a light-emitting compensation function, which can realize light-emitting detection and aging compensation of a light source module and a light guide beam, maintain stable light emission of the system and effectively prolong the service lives of the light source module and the light guide beam.
The technical scheme of the invention is now described in detail with reference to the accompanying drawings:
the first aspect of the invention provides a cold light source system with a light-emitting compensation function, which relates to a light guide beam (1), wherein the light guide beam (1) comprises a light guide beam light-entering interface (11), a light guide beam light-emitting interface (12) and an optical fiber bundle (13), the light guide beam light-entering interface (11) is a cylindrical hollow metal plug and is used for connecting a light-emitting source, the light guide beam light-emitting interface (12) is another cylindrical hollow metal plug and is used for connecting a light-receiving source, the optical fiber bundle (13) is a long glass optical fiber and is cylindrical, two ends of the optical fiber bundle are respectively embedded in the light guide beam light-entering interface (11) and the light guide beam light-emitting interface (12), the cold light source system comprises a cold light source light-emitting interface (2), a light source module (3), a light source driving module (4) and a main control module (5), the cold light source light-emitting interface (2) is a metal mechanical structure, the inside of which is a cylindrical hollow structure, the light guide beam light-entering interface (11) can be inserted from one end, the other end of the light-emitting interface is mechanically connected with a light-emitting end of the light source module (3), the central axis of the hollow structure coincides with the central axis of the light-emitting end, the light source (3) is a large-emitting end, the central axis of the central axis, the light source (31) is a large-power semiconductor light source (31) and a first light source (31) and a light source driving module (31) is a light source driving interface, a first light source driver (31) and a first light source driver, and a light source driver (31) and a light source driver, and a light source driver. Wherein the second light source driving interface (41) is a light source driving current output interface, electrically connected with the first light source driving interface (31), the first signal interface (42) is an input interface for receiving a control signal of the main control module (5), the main control module (5) is a microcontroller, and comprises a second signal interface (51), a third signal interface (52), a fourth signal interface (53) and a fifth signal interface (54), wherein the second signal interface (51) is a control signal output interface of the light source driving module (4), electrically connected with the first signal interface (42), the third signal interface (52) is an interface for receiving a light intensity processing result of outgoing light, the fourth signal interface (53) is an interface for receiving a position information of the light guiding beam light outgoing interface (12), the fifth signal interface (54) is an interface for receiving a light intensity processing result of incoming light, characterized in that the cold light source system further comprises an outgoing light feedback module (6) and an incoming light feedback module (7), wherein the outgoing light feedback module (6) is a device capable of detecting and processing light intensity data, the outgoing light intensity comprises a first detection module (61) and a sixth detection module (61) are mechanically connected with the light source (611) on one side, the first processing module (62) is a device for processing outgoing light intensity data, and comprises a seventh signal interface (621) and an eighth signal interface (622), wherein the seventh signal interface (621) is an interface for receiving outgoing light intensity data, is electrically connected with a sixth signal interface (611), the eighth signal interface (622) is an interface for transmitting outgoing light intensity processing results, is electrically connected with a third signal interface (52), the incoming light feedback module (7) is a device capable of detecting and processing incoming light intensity data, and comprises an incoming light collecting module (71) and a second processing module (72), the incoming light collecting module (71) is a connection end of a light guide beam outgoing light interface (12) and an incoming light intensity detection component, and comprises a ninth signal interface (711), a tenth signal interface (712), an in-place detection module (713), a second light intensity detection module (714), a filter module (715) and an incoming light interface (716), wherein the ninth signal interface (711) is an interface for transmitting information of the insertion position of the light guide beam outgoing light interface (12), the tenth signal interface (712) is an interface capable of transmitting light intensity data to the fourth signal interface (713) through the optical sensor (711), the second light intensity detection module (714) is a sensor capable of detecting the incident light intensity, the light filtering module (715) is a circular light filter with specific wavelength and is used for attenuating the incident light intensity in proportion, the incident light interface (716) is a mechanical structural member made of metal materials, the inside of the light filtering module is of a two-dimensional cylindrical hollow structure, the large-diameter part is used for adapting the light guide beam light outlet interface (12), the diameter of the large-diameter part is consistent with the outer diameter of the light guide beam light outlet interface (12), the length of the large-diameter part is consistent with the length of the light guide beam light outlet interface (12), the small-diameter part is used for transmitting incident light and detecting light intensity, no emitting hole is formed, the diameter of the small-diameter part is consistent with the diameter of the optical fiber bundle (13), so that all incident light can be transmitted to the rear end, the in-position detection module (713) is mechanically connected to the junction of the two cylindrical structures, the second light intensity detection module (714) is mechanically connected to the middle position of the tail part of the incident light interface (716), the light filtering module (715) is mechanically connected between the incident light and the second light intensity detection module (714), the light guide beam light outlet interface (12) is inserted into the incident light interface (716), the light outlet end face is consistent with the outer diameter of the light outlet end face of the light guide beam light outlet interface (12), the light outlet end face is consistent with the length of the light outlet end face of the light guide beam light outlet (12), the light outlet end is consistent with the length of the light, the light outlet end face is consistent with the optical fiber bundle (13), the diameter is consistent with the diameter of the optical fiber bundle (13), so that is guaranteed to be processed by the light signal processing module, the light signal processing module (72), the light source module 72 is arranged on the light signal center axis and the light source module 72, and the light signal processing module and the light source module 72 is arranged on the light signal processing device, and the light signal module and the light source module and the light signal processing module and the signal module. The eleventh signal interface (721) is an interface for receiving the light intensity data of the incident light, and is electrically connected with the tenth signal interface (712), and the twelfth signal interface (722) is an interface for transmitting the light intensity processing result of the incident light, and is electrically connected with the fifth signal interface (54).
Furthermore, the light source driving module (4) of the system can be a constant-current or constant-voltage LED driving device, the output driving current can be controlled by the main control module (5), and the initial maximum driving current is controlled to be lower than the maximum driving capability of the light source driving module (4) by a certain percentage.
Further, the first light intensity detection module (61) and the second light intensity detection module (714) of the system may be color sensors, photodiodes, phototriodes, or photocells.
Furthermore, the first processing module (62) and the second processing module (72) of the system can be a single chip microcomputer, a DSP or a data comparator, and can store data and perform real-time comparison operation.
Furthermore, the in-situ detection module (713) of the system can be an integrated specific light emitting and receiving sensor, a magnetic receiving and transmitting hall sensor, a proximity trigger sensor or a piezoelectric sensor, and is positioned at the junction of two cylindrical structures in the incident light interface (716), so that whether the light guide beam light outlet interface (12) is inserted in place or not can be detected, and the accuracy of light intensity detection of the incident light is ensured.
Based on the cold light source system with the light-emitting compensation function, the invention also provides a light-emitting compensation method, which comprises the following steps:
step S1: when in initial use, after the cold light source system is correctly connected, the initial intensity of emergent light and incident light is respectively detected under the maximum gearDegree of X 0 And Y is equal to 0 The initial intensity of the emergent light and the incident light is detected as X 'respectively under the middle fixed gear' 0 With Y' 0 Setting the allowable aging attenuation percentage as Z;
step S2: when the step S1 is performed again, the current intensity of the emergent light is detected as X under the maximum gear n If |X n -X 0 |＞Z*X 0 The driving current is increased until the new detection value of the first light intensity detection module (61) is X m And satisfy |X m -X 0 |<Z*X 0 The compensation of the emergent light is completed, and the current intensity of the incident light is detected as Y n ；
Step S3: contrast calculation of the initial intensity Y of incident light 0 And the current intensity Y n If |Y n -Y 0 |＞Z*Y 0 Further boosting the driving current until the new detection value of the second light intensity detection module (714) is Y m And satisfy |Y m -Y 0 |<Z*Y 0 The compensation of the incident light is completed; if the driving current rises to the reserved maximum driving capacity, there is still |Y m -Y 0 |＞Z*Y 0 Judging that the ageing attenuation of the light guide beam (1) is serious, and prompting replacement if the ageing attenuation of the light guide beam cannot be further compensated;
step S4: based on the above step S2, if the driving current is increased to the reserved maximum driving capability, there is still |x m -X 0 |＞Z*X 0 Judging that the aging attenuation of the light source module (3) is serious, and prompting replacement if the aging attenuation cannot be further compensated; simultaneously reducing the driving current until the detection value of the first light intensity detection module (61) is X' m And satisfy |X' m -X′ 0 |<Z*X′ 0 Detecting the current intensity of incident light as Y' m If |Y' m -Y′ 0 |<Z*Y′ 0 Judging that the light guide beam (1) can be continuously used; if |Y' m -Y′ 0 |＞Z*Y′ 0 The light guide beam (1) is also indicated to be replaced.
The invention has the positive effects that:
1. before the operation, medical staff can self-calibrate the whole system, self-adaptively compensate brightness attenuation generated by aging of the light source module or the light guide beam, and can also effectively prolong the service lives of the light source module and the light guide beam and avoid the waste of medical resources caused by frequent replacement.
2. The light intensity value of the emergent light can be detected in real time during operation, and when the light source module is aged, the attenuated brightness of the light source module can be compensated in real time, so that the aim of stabilizing the emergent light brightness is fulfilled, and the influence of the brightness attenuation on the imaging effect of the endoscope system is avoided.
Description of the drawings:
FIG. 1 is a schematic diagram of a light guide beam in a cold light source system according to the present invention.
Fig. 2 is a block diagram of a cold light source system with light-emitting compensation function according to the present invention.
FIG. 3 is a cross-sectional view of an incident light collection module in a cold light source system according to the present invention.
Fig. 4 is a flowchart of a light-emitting compensation method provided by the present invention.
Fig. 5 is a flowchart of an embodiment of a method for compensating real-time light output of a light source module according to the present invention.
The specific embodiment is as follows:
the technical scheme and working principle of the present invention will now be described in detail with reference to the accompanying drawings and examples.
This embodiment has exactly the same structure as the summary of the invention, and only key parameters are listed here for simplicity of description.
The light guide beam light inlet (11) is a hollow stainless steel cylinder with an inner diameter of 5mm, an outer diameter of 15mm and a length of 30mm. The light-guiding beam light-emitting interface (12) is a hollow stainless steel cylinder with an inner diameter of 5mm, an outer diameter of 15mm and a length of 15mm. The optical fiber bundle (13) is a glass optical fiber bundle with a diameter of 5mm. The cold light source light-emitting interface (2) is made of stainless steel, and is of a cylindrical hollow structure, the hollow diameter is 15mm, and the length is 30mm. The light source module (3) is a 60W white light LED light-emitting source. The light source driving module (4) is a constant-current LED driving chip, the maximum driving capacity is 5A, the factory preset output current is 0-4.5A and is adjustable, and 10% of dimming space is reserved for subsequent aging compensation of the system. The main control module (5) is a single-chip microcomputer minimum working system of ATmega series. The first light intensity detection module (61) and the second light intensity detection module (714) are RGBW type color sensors, and can detect light intensity in the wavelength range of 400nm-1000 nm. The first processing module (62) and the second processing module (72) are DSP processors capable of rapidly processing light intensity detection data in real time. The in-situ detection module (713) is a piezoelectric sensor, and when the light-guiding beam light-emitting interface (12) is correctly inserted into the incident light interface (716), the metal part of the light-emitting end face of the light-guiding beam light-emitting interface is contacted with the pressure sensing area of the piezoelectric sensor, so that the output value of the piezoelectric sensor is changed. The filter module (715) is a filter with 95% filtering characteristics for white light, preventing the light from being directed to the second light intensity detection module (714) to saturate the data. The incident light interface (716) is made of stainless steel and is provided with a large cylindrical hollow structure, a small cylindrical hollow structure and a small cylindrical hollow structure, wherein the large hollow structure is 15mm in diameter and 15mm in length, and the small hollow structure is 5mm in diameter and 15mm in length.
The working principle is as follows: the components of the system are shown in fig. 1, 2 and 3, and will not be described again. The working principle of the present solution will now be described in detail with reference to fig. 4 and 5.
When the cold light source system is used for the first time, the light guide beam light inlet interface (11) and the light guide beam light outlet interface (12) are respectively inserted into the cold light source light outlet interface (2) and the incident light interface (716), and after the insertion position of the light guide beam light outlet interface (12) is correctly fed back by the in-situ detection module (713), the initial intensity of emergent light and incident light is detected as X under the maximum gear respectively 0 And Y is equal to 0 The initial intensity of the emergent light and the incident light is detected as X 'respectively under the middle fixed gear' 0 With Y' 0 Initial values are stored in the first processing module (62) and the second processing module (72), respectively.
The allowable aging decay percentage z=5% is set.
In the using process, detecting the current intensity of emergent light to be X under the maximum gear n If |X n -X 0 |＞5％*X 0 The main control module (5) controls the light source driving module (4) to increase the driving current until the new detection value X of the first light intensity detection module (61) m Satisfy |X m -x 0 |<5％*X 0 The compensation of the emergent light is completed, and the current intensity of the incident light is detected as Y n 。
The aging attenuation compensation for the light source module (3) can be performed in real time during the operation.
After the emergent light is successfully compensated, the initial intensity Y of the incident light is calculated in a contrasting way 0 And the current intensity Y n If |Y n -Y 0 |＞5％*Y 0 Further controlling the light source driving module (4) to increase the driving current until the new detection value Y of the second light intensity detection module (714) m Satisfy |Y m -Y 0 |<5％*Y 0 And the compensation of the incident light is completed.
The ageing attenuation compensation for the light guide beam (1) should be performed before surgery.
If the light intensity still exists when the driving current is increased to the reserved maximum driving capacity and the light intensity does not meet the requirement, the light source module (3) or the light guide beam (1) is required to be replaced.
The invention can realize the light-emitting detection and aging compensation of the light source module and the light guide beam, maintain the stable light emission of the system, reduce the influence of aging of the light source module and the light guide beam on the performance of the whole cold light source system after the light-emitting compensation is implemented, prolong the service life of the parts and reduce the waste of medical resources.
Claims (6)
1. The cold light source system with the light-emitting compensation function relates to a light guide beam (1), wherein the light guide beam (1) comprises a light guide beam light-entering interface (11), a light guide beam light-emitting interface (12) and an optical fiber bundle (13), the light guide beam light-entering interface (11) is a cylindrical hollow metal plug and is used for being connected with a light-emitting source, the light guide beam light-emitting interface (12) is another cylindrical hollow metal plug and is used for being connected with a light-receiving source, the optical fiber bundle (13) is a long glass optical fiber and is in a cylindrical shape and used for light transmission, two ends of the optical fiber bundle are respectively embedded in the light guide beam light-entering interface (11) and the light guide beam light-emitting interface (12), the cold light source system comprises a cold light source light-emitting interface (2), a light source module (3), a light source driving module (4) and a main control module (5), the cold light source light-emitting interface (2) is a metal mechanical structure, the inside of which is in a cylindrical hollow structure, the light guide beam light-entering interface (11) can be inserted from one end, the other end of the light guide beam light-emitting interface (12) is mechanically connected with a light-emitting end, the central axis of the hollow structure coincides with the central axis of the light-emitting end, the light source module (3) is a high-power semiconductor light-emitting source module (31), the first light source (31) comprises a light source driving interface (31) and a light source driving module (41) and a light source driving interface (41), wherein the second light source driving interface (41) is a light source driving current output interface, electrically connected with the first light source driving interface (31), the first signal interface (42) is an input interface for receiving a control signal of the main control module (5), the main control module (5) is a microcontroller, and comprises a second signal interface (51), a third signal interface (52), a fourth signal interface (53) and a fifth signal interface (54), wherein the second signal interface (51) is a control signal output interface of the light source driving module (4), electrically connected with the first signal interface (42), the third signal interface (52) is an interface for receiving a light intensity processing result of outgoing light, the fourth signal interface (53) is an interface for receiving a position information of the light guiding beam light outgoing interface (12), the fifth signal interface (54) is an interface for receiving a light intensity processing result of incoming light, characterized in that the cold light source system further comprises an outgoing light feedback module (6) and an incoming light feedback module (7), wherein the outgoing light feedback module (6) is a device capable of detecting and processing light intensity data, the outgoing light intensity comprises a first detection module (61) and a sixth detection module (61) are mechanically connected with the light source (611) on one side, the first processing module (62) is a device for processing outgoing light intensity data, and comprises a seventh signal interface (621) and an eighth signal interface (622), wherein the seventh signal interface (621) is an interface for receiving outgoing light intensity data, is electrically connected with a sixth signal interface (611), the eighth signal interface (622) is an interface for transmitting outgoing light intensity processing results, is electrically connected with a third signal interface (52), the incoming light feedback module (7) is a device capable of detecting and processing incoming light intensity data, and comprises an incoming light collecting module (71) and a second processing module (72), the incoming light collecting module (71) is a connection end of a light guide beam outgoing light interface (12) and an incoming light intensity detection component, and comprises a ninth signal interface (711), a tenth signal interface (712), an in-place detection module (713), a second light intensity detection module (714), a filter module (715) and an incoming light interface (716), wherein the ninth signal interface (711) is an interface for transmitting information of the insertion position of the light guide beam outgoing light interface (12), the tenth signal interface (712) is an interface capable of transmitting light intensity data to the fourth signal interface (713) through the optical sensor (711), the second light intensity detection module (714) is a sensor capable of detecting the incident light intensity, the light filtering module (715) is a circular light filter with specific wavelength and is used for attenuating the incident light intensity in proportion, the incident light interface (716) is a mechanical structural member made of metal materials, the inside of the light filtering module is of a two-dimensional cylindrical hollow structure, the large-diameter part is used for adapting the light guide beam light outlet interface (12), the diameter of the large-diameter part is consistent with the outer diameter of the light guide beam light outlet interface (12), the length of the large-diameter part is consistent with the length of the light guide beam light outlet interface (12), the small-diameter part is used for transmitting incident light and detecting light intensity, no emitting hole is formed, the diameter of the small-diameter part is consistent with the diameter of the optical fiber bundle (13), so that all incident light can be transmitted to the rear end, the in-position detection module (713) is mechanically connected to the junction of the two cylindrical structures, the second light intensity detection module (714) is mechanically connected to the middle position of the tail part of the incident light interface (716), the light filtering module (715) is mechanically connected between the incident light and the second light intensity detection module (714), the light guide beam light outlet interface (12) is inserted into the incident light interface (716), the light outlet end face is consistent with the outer diameter of the light outlet end face of the light guide beam light outlet interface (12), the light outlet end face is consistent with the length of the light outlet end face of the light guide beam light outlet (12), the light outlet end is consistent with the length of the light, the light outlet end face is consistent with the optical fiber bundle (13), the diameter is consistent with the diameter of the optical fiber bundle (13), so that is guaranteed to be processed by the light signal processing module, the light signal processing module (72), the light source module 72 is arranged on the light signal center axis and the light source module 72, and the light signal processing module and the light source module 72 is arranged on the light signal processing device, and the light signal module and the light source module and the light signal processing module and the signal module. The eleventh signal interface (721) is an interface for receiving the light intensity data of the incident light, and is electrically connected with the tenth signal interface (712), and the twelfth signal interface (722) is an interface for transmitting the light intensity processing result of the incident light, and is electrically connected with the fifth signal interface (54).
2. A cold light source system with light-emitting compensation function according to claim 1, characterized in that the light source driving module (4) can be a constant current or constant voltage LED driving device, the output driving current can be controlled by the main control module (5), and the initial maximum driving current is controlled to be lower than the maximum driving capability of the light source driving module (4) by a certain percentage.
3. A cold light source system with light emission compensation according to claim 1, wherein the first light intensity detection module (61) and the second light intensity detection module (714) can be color sensors, photodiodes, phototriodes or photocells.
4. The cold light source system with the light-emitting compensation function according to claim 1, wherein the first processing module (62) and the second processing module (72) can be a single chip microcomputer, a DSP or a data comparator, and can perform data storage and real-time comparison operation.
5. The cold light source system with the light-emitting compensation function according to claim 1, wherein the in-situ detection module (713) can be an integrated specific light emitting and receiving sensor, a magnetic receiving and transmitting hall sensor, a proximity trigger sensor or a piezoelectric sensor, and is positioned at the junction of two cylindrical structures in the incident light interface (716), so that whether the light-guiding beam light-emitting interface (12) is inserted in place or not can be detected, and the accuracy of light intensity detection of the incident light is ensured.
6. A cold light source system having a light-emitting compensation function according to any one of claims 1 to 5, wherein a light-emitting compensation method is provided, the method comprising the steps of:
step S1: when the light source system is used for the first time, after the cold light source system is correctly connected, the initial intensity of emergent light and incident light is detected as X under the maximum gear respectively 0 And Y is equal to 0 The initial intensity of the emergent light and the incident light is detected as X under the middle fixed gear ′ 0 And Y is equal to 0 ′ Setting the allowable aging attenuation percentage as Z;
step S2: when the step S1 is performed again, the current intensity of the emergent light is detected as X under the maximum gear n If |X n -X 0 |>Z*X 0 The driving current is increased until the new detection value of the first light intensity detection module (61) is X m And satisfy |X m -X 0 |<Z*X 0 The compensation of the emergent light is completed, and the current intensity of the incident light is detected as Y n ；
Step S3: contrast calculation of the initial intensity Y of incident light 0 And the current intensity Y n If |Y n -Y 0 |>Z*Y 0 Further boosting the driving current until the new detection value of the second light intensity detection module (714) is Y m And satisfy |Y m -Y 0 |<Z*Y 0 The compensation of the incident light is completed; if the driving current rises to the reserved maximum driving capacity, there is still |Y m -Y 0 |>Z*Y 0 Judging that the ageing attenuation of the light guide beam (1) is serious, and prompting replacement if the ageing attenuation of the light guide beam cannot be further compensated;
step S4: based on the above step S2, if the driving current is increased to the reserved maximum driving capability, there is still |x m -X 0 |>Z*X 0 Judging that the aging attenuation of the light source module (3) is serious, and prompting replacement if the aging attenuation cannot be further compensated; simultaneously reducing the driving current until the detection value of the first light intensity detection module (61) is X ′ m And satisfy |X ′ m -X ′ 0 |<Z*X ′ 0 Detecting the current intensity of incident light as Y ′ m If |Y ′ m -Y 0 ′ |<Z*Y 0 ′ Judging that the light guide beam (1) can be continuously used; if |Y ′ m -Y 0 ′ |>Z*Y 0 ′ The light guide beam (1) is also indicated to be replaced.
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