CN103479319A - Medical endoscope, cold light source system of medical endoscope and working method of cold light source system - Google Patents
Medical endoscope, cold light source system of medical endoscope and working method of cold light source system Download PDFInfo
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Abstract
The invention provides a cold light source system of a medical endoscope. The cold light source system is provided with a power source input interface and comprises a high-power LED module, a cold light source control plate and a medical isolated power source, the high-power LED module comprises an LED light-emitting chip, a junction temperature measuring sensor for measuring junction temperature, and an illuminance measuring sensor for measuring illuminance, the cold light source control plate is electrically connected to the medical isolated power source and the high-power LED module, drives the high-power LED module to work, records and stores accumulated using time and illuminance of the LED light-emitting chip, calculating service life of the LED light-emitting chip according to the accumulated using time and/or the illuminance, and comparing with a preset value to determine whether prewarning is needed or not, and the medical isolated power source is electrically connected with the power source input interface, performs isolated voltage transformation on input current and provides a working power source to the high-power LED module and the cold light source control plate. By the cold light source system, probability of accident occurrence caused by service life of the LED light-emitting chip in the medical endoscope can be effectively lowered.
Description
Technical field
The present invention relates to the medical device technical field, relate in particular to a kind of medical endoscope, Medical endoscope cold light source system and method for work thereof with life-span early warning.
Background technology
Along with the technology of high-brightness LED is constantly progressive, the medical endoscope light source field is usingd the great power LED luminescence chip and is started gradually to capture as the cold light source for endoscope of core the market that former cause halogen tungsten lamp, hernia lamp etc. rule all the land.The many merits such as the LED cold light source can overcome the deficiency of the endoscope illuminators such as existing halogen tungsten lamp, hernia lamp effectively, high with its brightness, that colour temperature is suitable, caloric value is few, the life-span is long and the parent that is subject to users look at.The theoretical life-span of the LED cold light source of technology maturation can reach more than 50,000 hours, yet, but often easily ignored the emergency case of its life-span aspect, because the situation that the LED luminescence chip lost efficacy is nearly all to occur in use, for medical endoscope, as long as the situation that the LED luminescence chip lost efficacy occurs, the life safety that will jeopardize In surgery patient, so it is just quite crucial how before it lost efficacy, to carry out effective early warning.
Notification number is that the Chinese utility model patent that CN201431441 and notification number are CN201481381 discloses respectively LED cold light source for medical endoscope and cold light source device of medical endoscope U, both provide respectively LED cold light source implementations different in the medical endoscope its, but all lack the prevention in particular cases the LED luminescence chip lost efficacy.
The Chinese utility model patent that notification number is CN202335847 has proposed a kind of Medical endoscope cold light source equipment, and the ambient temperature of its endoscope cold light source and board failure etc. are reported to the police; The Chinese utility model patent that notification number is CN202371523 has proposed a kind of Multifunctional LED cold light source, and it carries out temperature control and overtemperature prote to LED.But; above two schemes all rests on the more elementary protection stage; because the reason that LED lost efficacy or to affect the factor in LED luminescence chip life-span many-sided often; the heat radiation of chip etc. when circuit environment when production technology, the chip that comprises chip itself applied in the cold light source circuit, work; therefore when the LED luminescence chip lost efficacy, be not to control temperature just can prevent usually.The more important thing is and need to tell in advance that people change the LED lamp or overhauled.
Summary of the invention
For the problems referred to above, the purpose of this invention is to provide a kind of medical endoscope solved the problems of the technologies described above, Medical endoscope cold light source system and method for work thereof.
A kind of Medical endoscope cold light source system, it has power input interface, and described Medical endoscope cold light source system comprises high-power LED module, cold light source panel and medical isolating power; Described high-power LED module comprises the LED luminescence chip, for the junction temperature measurement sensor of the junction temperature of measuring described LED luminescence chip with for the illuminance measuring quantity sensor of the illuminance of measuring described LED luminescence chip; Described cold light source panel is electrically connected at described medical isolating power and described high-power LED module, described cold light source panel drives described high-power LED module work, described cold light source panel records and stores accumulative total service time and the illuminance of described LED luminescence chip, described cold light source panel is according to described accumulative total service time and described illuminance the life-span of described LED luminescence chip being calculated, and the contrast preset value determines whether to carry out early warning; Described medical isolating power is electrically connected described power input interface, and it is isolated transformation to input current, and provides working power for described high-power LED module and described cold light source panel.
In the present invention's one better embodiment, described high-power LED module further is included as the air-cooled radiator that described LED luminescence chip is dispelled the heat, and described air-cooled radiator is electrically connected at described cold light source panel.
In the present invention's one better embodiment, described cold light source panel comprises record storage unit and the microprocessing unit of mutual electric connection, described record storage unit records and stores accumulative total service time and the illuminance of described LED luminescence chip, described microprocessing unit is according to described accumulative total service time and described illuminance the life-span of described LED luminescence chip being calculated, and the contrast preset value determines whether to carry out early warning.
In the present invention's one better embodiment, described Medical endoscope cold light source system further comprise the light that described LED luminescence chip is sent carry out the concentration module of optically focused, for the display screen of man-machine interaction, control the adjusting knob of described LED luminescence chip switch and brightness size and the radiator fan dispelled the heat for described Medical endoscope cold light source system; Described concentration module is arranged at a side of described LED luminescence chip emergent ray, and it comprises varifocal battery of lens; Described display screen, described adjusting knob and described radiator fan all are electrically connected at described cold light source panel.
In the present invention's one better embodiment, described cold light source panel comprises control unit and power cell, described control unit and described power cell all are electrically connected at described insulating power supply, described control unit provides working power for described record storage unit, described microprocessing unit, described display screen and described radiator fan, and described power cell provides working power for described high-power LED module.
In the present invention's one better embodiment, described concentration module further comprises the light collecting barrel of grafting optical fiber, and described light collecting barrel is arranged at the side of described concentration module away from described LED luminescence chip.
In the present invention's one better embodiment, described microprocessing unit comprises LED biometry module based on junction temperature and the LED biometry module based on illuminance;
The described LED biometry module based on junction temperature comprises junction temperature data-reading unit and the first computing unit, described junction temperature data-reading unit is for reading the junction temperature that described junction temperature measurement sensor obtains, the corresponding working time, the historical data of the service time of theoretical work time and described LED luminescence chip, described the first computing unit goes out life-span conversion factor and totally service time accordingly under each junction temperature according to corresponding working time and theoretical work Time Calculation under described each junction temperature, finally according to the standard Life Calculation of described LED luminescence chip, go out the residual life of described LED luminescence chip,
The described LED biometry module based on illuminance comprises illuminance data-reading unit and the second computing unit, described illuminance data-reading unit is for reading the initial illuminance data of described LED luminescence chip and the illuminance that described illuminance measuring quantity sensor obtains, the illuminance that described the second computing unit obtains according to described initial illuminance and described illuminance measuring quantity sensor is calculated the light decay rate of described LED luminescence chip, and contrast the output illumination degree of described LED luminescence chip and use the relation curve of duration, draw the use duration of described LED luminescence chip, finally according to the standard Life Calculation of described LED luminescence chip, go out the residual life of described LED luminescence chip.
In the present invention's one better embodiment, described cold light source panel further comprises comparing unit and prewarning unit, described comparing unit is for residual life and the described preset value of more described LED luminescence chip, when the residual life of described LED luminescence chip is less than or equal to described preset value, described prewarning unit output early warning signal.
In the present invention's one better embodiment, described Medical endoscope cold light source system also comprises a cabinet, described power input interface is arranged at the back shroud of described cabinet, and described high-power LED module, described cold light source panel and described medical isolating power all are arranged in described cabinet.
A kind of medical endoscope, it comprises above-mentioned any Medical endoscope cold light source system.
A kind of method of work of Medical endoscope cold light source system, it comprises the steps:
Initialized self check after S11, starting up, obtained self-detection result;
S12, to carrying out timing the service time of described LED luminescence chip;
S13, the residual life that calculates described LED luminescence chip according to accumulative total service time and the illuminance of described self-detection result and described LED luminescence chip, and the contrast preset value determines whether to carry out early warning;
S14, when the life value calculate obtained is greater than described preset value, entering the normal operation circulation.
Compared to prior art, Medical endoscope cold light source system provided by the invention has the following advantages: one, junction temperature and the illuminance of utilizing junction temperature measurement sensor wherein and illuminance measuring quantity sensor can effectively measure in real time described LED luminescence chip, and described cold light source panel can record and store accumulative total service time and the illuminance of described LED luminescence chip, and the life-span of according to described accumulative total service time and described illuminance, calculating described LED luminescence chip, contrast again preset value and determine whether to carry out early warning, thereby can effectively reduce medical endoscope because the life-span of LED luminescence chip wherein is former thereby the probability of the accident that meets accident.Two, measure in real time the illuminance of the described LED luminescence chip obtained, can be convenient to make the doctor clearly to know the luminous parameters of LED cold light source in medical endoscope, and then be convenient to adjust required appropriate brightness.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of description, and for above and other objects of the present invention, feature and advantage can be become apparent, below especially exemplified by embodiment, and the cooperation accompanying drawing, be described in detail as follows.
The accompanying drawing explanation
The structural representation of the Medical endoscope cold light source system that Fig. 1 provides for first embodiment of the invention.
Fig. 2 is the composition schematic diagram of high-power LED module in the Medical endoscope cold light source system shown in Fig. 1.
Fig. 3 is the composition schematic diagram of cold light source panel in the Medical endoscope cold light source system shown in Fig. 1.
The chip life-span that Fig. 4 is LED and the graph of a relation of junction temperature.
The chip output illumination degree that Fig. 5 is LED and chip are used the graph of a relation of duration.
The flow chart of the method for work of the Medical endoscope cold light source system that Fig. 6 provides for second embodiment of the invention.
The specific embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is further detailed explanation.
See also Fig. 1 and Fig. 2, first embodiment of the invention provides a kind of Medical endoscope cold light source system 100, it has power input interface 10, and described Medical endoscope cold light source system 100 comprises high-power LED module 20, cold light source panel 30 and medical isolating power 40.Described high-power LED module 20 comprises LED luminescence chip 21, for the junction temperature measurement sensor 23 of the junction temperature of measuring described LED luminescence chip 21 with for the illuminance measuring quantity sensor 25 of the illuminance of measuring described LED luminescence chip 21.Described cold light source panel 30 is electrically connected at described medical isolating power 40 and described high-power LED module 20, described cold light source panel 30 drives described high-power LED module 20 work, described cold light source panel 30 records and stores accumulative total service time and the illuminance of described LED luminescence chip 21, described cold light source panel 30 is according to described accumulative total service time and described illuminance the life-span of described LED luminescence chip 21 being calculated, and the contrast preset value determines whether to carry out early warning.Described medical isolating power 40 is electrically connected described power input interface 10, and it is isolated transformation to input current, and provides working power for described high-power LED module 20 and described cold light source panel 30.
Further, described high-power LED module 20 comprises air-cooled radiator 27, and described air-cooled radiator 27 is electrically connected at described cold light source panel 30, for described LED luminescence chip 21 is dispelled the heat.
In the present embodiment, described junction temperature sensor 23 is critesistor, and it is arranged at the periphery of described LED luminescence chip; Described illuminance sensor 25 is light sensor, it is arranged at the base (not shown) of described LED luminescence chip 21, and be positioned at the side of described LED luminescence chip 21 emergent raies, thus, can carry out indirectly illuminance measurement to described LED luminescence chip 21 from the side, avoid the illuminance of described LED luminescence chip 21 to exceed the measuring range of described illuminance sensor 25, and then increase cost without the measuring range because improving described illuminance sensor 25.
Further, described Medical endoscope cold light source system 100 comprises concentration module 50, display screen 60, adjusting knob 70 and radiator fan 80.Described concentration module 50 carries out optically focused for the light that described LED luminescence chip 21 is sent, and it is arranged at a side of described LED luminescence chip 21 emergent raies, and in the present embodiment, described concentration module 50 comprises varifocal battery of lens.Described display screen 60 is for man-machine interaction, and in the present embodiment, described display screen 60 is LCDs; Described adjusting knob 70 is controlled described LED luminescence chip switch and brightness size; Described radiator fan 80 is dispelled the heat for described Medical endoscope cold light source system 100.Described display screen 60, described adjusting knob 70 and described radiator fan 80 all are electrically connected at described cold light source panel 30.
Further, described concentration module 50 comprises the light collecting barrel (not shown), and it is for the optical fiber of pegging graft, and described light collecting barrel is arranged at the side of described concentration module 50 away from described LED luminescence chip 21.
Refer to Fig. 3, in the present embodiment, described cold light source panel 30 comprises record storage unit 31 and microprocessing unit 33, described record storage unit 31 and described microprocessing unit 33 are electrically connected mutually, described record storage unit 31 records and stores accumulative total service time and the illuminance of described LED luminescence chip 21, described microprocessing unit 33 is according to described accumulative total service time and described illuminance the life-span of described LED luminescence chip 21 being calculated, and the contrast preset value determines whether to carry out early warning.When the life-span of calculating acquisition is less than or equal to preset value, described microprocessing unit 33 output early warning signals.
Particularly, described record storage unit 31 comprises timer (not shown) and intervalometer (not shown), and described timer is used for carrying out timing the service time of described LED luminescence chip 21, and described intervalometer is for guaranteeing the accuracy of described timer timing.
Particularly, described microprocessing unit 33 comprises LED biometry module 331 based on junction temperature and the LED biometry module 333 based on illuminance, and described microprocessing unit 33 comprises one of the LED biometry module 331 that at least comprises based on junction temperature and the LED biometry module 333 based on illuminance.
The described LED biometry module 331 based on junction temperature comprises junction temperature data-reading unit 3311 and the first computing unit 3313, the junction temperature that described junction temperature data-reading unit 3311 is obtained for reading described junction temperature measurement sensor 23, the corresponding working time under each junction temperature, the historical data of the service time of theoretical work time and described LED luminescence chip 21, described the first computing unit 3313 goes out life-span conversion factor and totally service time accordingly under each junction temperature according to corresponding working time and described theoretical work Time Calculation under described each junction temperature, finally according to the standard Life Calculation of described LED luminescence chip 21, go out the residual life of described LED luminescence chip 21.
The described LED biometry module 333 based on illuminance comprises illuminance data-reading unit 3331 and the second computing unit 3333, the illuminance that described illuminance data-reading unit 3331 is obtained for the initial illuminance data that read described LED luminescence chip 21 and described illuminance measuring quantity sensor 25, the illuminance that described the second computing unit 3333 obtains according to described initial illuminance and described illuminance measuring quantity sensor 25 is calculated the light decay rate of described LED luminescence chip 21, and contrast the output illumination degree of described LED luminescence chip 21 and use the relation curve of duration, draw the use duration of described LED luminescence chip 21, finally according to the standard Life Calculation of described LED luminescence chip 21, go out the residual life of described LED luminescence chip 21.
In the present embodiment, the operation principle of the described LED biometry module 331 based on junction temperature is as follows:
According to LED producer, the LED luminescence chip is tested to the chip life-span of gained series of LED and the graph of a relation (as shown in Figure 4) of junction temperature, can be learnt the LED luminescence chip situation in service life of working under a certain junction temperature.
Because the LED brightness (power) needed during work is different, therefore LED does not always work under identical junction temperature, so want the life-span is carried out to effective prediction and calculation, just need to record the working time of LED luminescence chip 21 under various duties (different temperatures).Finally, according to the working time ratio of various duties, go out the roughly life situations of LED luminescence chip 21 according to curve calculating.
Particularly, at first definition:
50,000 hours standard life-spans were: T
stand;
Different junction temperature (temp
1, temp
2temp
n) descend the theoretical life-span (h) of work to be: T
temp1, T
temp2t
tempn;
Different junction temperature (temp
1, temp
2temp
n) under time (h) of having worked be: t
temp1,
t
temp2……t
tempn；
The life-span conversion factor:
，
……
；
The concrete surplus working life T of LED luminescence chip 21
lfor:
Wherein, n is the temperature value of the certain intervals of certain selected series of LED.
By conversion service time under difference joint temperature, be finally the service time under the standard life length, and then derive the concrete surplus working life of described LED luminescence chip 21.
Be understandable that, during Practical Calculation, can be sampled to " the chip life-span of LED and the graph of a relation of junction temperature ", obtain " mapping table of LED chip life-span and junction temperature ", obviously, corresponding junction temperature value of life value.Preferably, described " mapping table of LED chip life-span and junction temperature " is stored in described record storage unit 31, to described LED luminescence chip 21 carry out Life Calculation the time carry out search call.
In the present embodiment, the operation principle of the described LED biometry module 333 based on illuminance is as follows:
According to LED producer, the LED luminescence chip is tested to the chip output illumination degree of gained series of LED and the graph of a relation (as shown in Figure 5) that chip is used duration, can be learnt the LED luminescence chip situation in service life of working under a certain junction temperature.
Be understandable that, according to the chip output illumination degree of the LED shown in Fig. 3 and the graph of a relation of chip use duration, the attenuation of the illuminance of sending by the measurement LED chip, can know the position of LED chip in life cycle.
In the present embodiment, by 25 pairs of luminous illuminance of described LED luminescence chip 21 of described illuminance measuring quantity sensor, gathered, can be obtained optical attenuation situation in the whole use procedure of described LED luminescence chip 21.
Particularly, when dispatch from the factory after the LED cold light source carries out burn-in test (1), its illuminance value is measured, and illumination initial value using the illuminance value measured as described LED cold light source.(2) due to the time that optical attenuation need to be longer occurring, while therefore setting the described Medical endoscope cold light source of each starting up system 100, carry out self check, by described adjusting knob 70, brightness is adjusted to maximum simultaneously, measure and record its illuminance value.(3) according to certain time interval, contrast all previous illuminance data, calculate its attenuation rate, then use the graph of a relation of duration to compare the chip output illumination degree of the attenuation rate that calculates and the LED shown in Fig. 3 and chip, can obtain the use duration situation of described LED luminescence chip 21.(4) take 50,000 hours as the standard life-span, deduct and use duration, can obtain residual life.
Be understandable that, during Practical Calculation, can be sampled to " the chip output illumination degree of LED and chip are used the graph of a relation of duration ", be obtained " mapping table that LED output illumination degree and chip are used duration ", obviously, an illuminance value is a corresponding use duration.Preferably, described " LED output illumination degree and chip are used the mapping table of duration " is stored in described record storage unit 31, to described LED luminescence chip 21 carry out Life Calculation the time carry out search call.
Be understandable that, when described microprocessing unit 33 comprises simultaneously and use described LED biometry module 331 based on junction temperature and the described LED biometry module 333 based on illuminance, the residual life that can calculate separately according to described LED biometry module 331 based on junction temperature and described LED biometry module 333 based on illuminance, be weighted to optimize and calculate, as: as described in the residual life that calculates of LED biometry module based on junction temperature 331 be L1, the residual life that the described LED biometry module 333 based on illuminance is calculated is L2, weighted optimization result of calculation is:
L=a×L1+b×L2
Wherein, a, b are weight coefficient, and meet a+b=1.
In the present embodiment, described cold light source panel 30 also comprises control unit 35 and power cell 37, described control unit 35 and described power cell 37 all are electrically connected at described insulating power supply 40, described control unit 35 provides working power for described record storage unit 31, described microprocessing unit 33, described display screen 60 and described radiator fan 80, and described power cell 37 provides working power for described LED luminescence chip 21.
Be understandable that, described record storage unit 31, described microprocessing unit 33, described display screen 60 and described radiator fan 80 all are electrically connected at described control unit 35, and described high-power LED module 20 is electrically connected at described power cell 37.
In the present embodiment, action is regulated in the rotation that described microprocessing unit 33 detects described adjusting knob 70 in real time, if the action of described adjusting knob 70 detected, the brightness of according to the action situation of described adjusting knob 70, regulating described LED luminescence chip 21.Then, described microprocessing unit 33 will detect the described working time of LED luminescence chip 21 under this brightness, and judge whether it reaches predefined interval, if it is new with the time, adding up into " service time " and be stored in described record storage unit 31.Be added to " T junction temperature service time " and be stored in described record storage unit 31 service time that described microprocessing unit 33 is junction temperature also T simultaneously.Then described microprocessing unit 33 will be measured the current junction temperature of described LED luminescence chip 21, if temperature change, the new temperature that basis measures is so chosen the service time of being stored " T junction temperature service time " this junction temperature of its correspondence.The last illuminance value of measuring in real time described LED luminescence chip 21, and shown by described display screen 70.
Further, described cold light source panel 30 comprises comparing unit 38 and prewarning unit 39, described comparing unit 38 is for residual life and the described preset value of more described LED luminescence chip 21, when the residual life of described LED luminescence chip 21 is less than or equal to described preset value, described prewarning unit 39 output early warning signals, and carry out early warning.
Be understandable that, described Medical endoscope cold light source system 100 also comprises that a cabinet 90(as shown in Figure 1), described power input interface 10 is arranged at the back shroud (figure does not indicate) of described cabinet 90, and described high-power LED module 20, described cold light source panel 30 and described medical isolating power 40 all are arranged in described cabinet 90.
In the present embodiment, the operation principle of described Medical endoscope cold light source system 100 is as follows: the 220v alternating current, by power input interface 10 inputs, is isolated transformation by medical isolating power 40 and is produced the 12v power supply that is applicable to described Medical endoscope cold light source system 100 work; The 12v power supply enters cold light source panel 30, is respectively control unit 35 and power cell 37 power supplies wherein; Control unit 35 provides power supply for display screen 60, record storage unit 31, microprocessing unit 33 and radiator fan 80, and power cell 37 provides power supply for LED luminescence chip 21.Cold light source panel 30 can be controlled the luminous power of LED luminescence chip 21, record storage unit 31 can record storage to accumulative total service time and the passing illuminance situation of LED luminescence chip 21, microprocessing unit 33 can carry out the residual life that LED luminescence chip 21 is predicted in computing according to accumulative total service time and illuminance, and the contrast preset value provides the alarm early warning signal in good time.LED luminescence chip 21 sends lightness stabilized white light under the effect of power supply, and 50 pairs of white lights of concentration module are assembled, and finally outputs on the optical fiber that the user inserts light collecting barrel.
Refer to Fig. 6, second embodiment of the invention provides a kind of method of work of Medical endoscope cold light source system, and it comprises the steps:
Initialized self check after S11, described Medical endoscope cold light source system 100 starting up, obtained self-detection result.
Its purpose that is initialized self check after described Medical endoscope cold light source system 100 starting up is mainly to have or not and make mistakes in order to realize the illuminance collection of described LED luminescence chip 21 and to detect interlock circuit, obtains self-detection result.
Be understandable that, described self-detection result comprises illuminance, the interlock circuit existing problems or no problem that gather the described LED luminescence chip of acquisition.
S12, to carrying out timing the service time of described LED luminescence chip.
After described Medical endoscope cold light source system 100 initializes self check, open timer in described record storage unit 31 to carrying out timing the service time of described LED luminescence chip 21, and adopt the intervalometer in described record storage unit 31 to carry out timing, to guarantee the accuracy of described timer timing.
S13, according to accumulative total service time of described self-detection result and described LED luminescence chip with or illuminance calculate the residual life of described LED luminescence chip, and the contrast preset value determines whether to carry out early warning.
In the present embodiment, the life-span of by described LED biometry module 331 based on junction temperature and described LED biometry module 333 based on illuminance, calculating described LED luminescence chip 21, then utilizing 38 pairs of described comparing units to calculate the life value and the described preset value that obtain is contrasted, when the life value that calculates acquisition is less than or equal to described preset value, described microprocessing unit 33 output early warning signals, be the prewarning unit 39 output early warning signals of described microprocessing unit 33, and carry out early warning.
S14, when the life value calculate obtained is greater than described preset value, entering the normal operation circulation.
In the present embodiment, when the life value that calculates acquisition is greater than described preset value, described Medical endoscope cold light source system 100 enters the normal operation circulation.
In the present embodiment, after the cold light source panel 30 of described Medical endoscope cold light source system 100 is received the shutdown command that the user sends by described display screen 60, first to being stored the service time of described LED luminescence chip 21, be stored in described record storage unit 31 service time that is about to described LED luminescence chip 21, close described record storage unit 31 by described control unit 35 again, described microprocessing unit 33, the working power of described display screen 60 and described radiator fan 80, close the working power of described LED luminescence chip 21 by described power cell 37 simultaneously.
Compared to prior art, described Medical endoscope cold light source system 100 has the following advantages: one, junction temperature and the illuminance of utilizing junction temperature measurement sensor 23 wherein and illuminance measuring quantity sensor 25 can effectively measure in real time described LED luminescence chip 21, and described cold light source panel 30 can record and store accumulative total service time and the illuminance of described LED luminescence chip 21, and the life-span of according to described accumulative total service time and described illuminance, calculating described LED luminescence chip 21, contrast again preset value and determine whether to carry out early warning, thereby can effectively reduce medical endoscope because the life-span of LED luminescence chip wherein is former thereby the probability of the accident that meets accident.Two, measure in real time the illuminance of the described LED luminescence chip 21 obtained, can be convenient to make the doctor clearly to know the luminous parameters of LED cold light source in medical endoscope, and then be convenient to adjust required appropriate brightness.
The above, only embodiments of the invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with embodiment, yet not in order to limit the present invention, any those skilled in the art, within not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solution of the present invention content, any simple modification of above embodiment being done according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (11)
1. a Medical endoscope cold light source system, it has power input interface, it is characterized in that, and described Medical endoscope cold light source system comprises high-power LED module, cold light source panel and medical isolating power; Described high-power LED module comprises the LED luminescence chip, for the junction temperature measurement sensor of the junction temperature of measuring described LED luminescence chip with for the illuminance measuring quantity sensor of the illuminance of measuring described LED luminescence chip; Described cold light source panel is electrically connected at described medical isolating power and described high-power LED module, described cold light source panel drives described high-power LED module work, described cold light source panel records and stores accumulative total service time and the illuminance of described LED luminescence chip, described cold light source panel is according to described accumulative total service time and described illuminance the life-span of described LED luminescence chip being calculated, and the contrast preset value determines whether to carry out early warning; Described medical isolating power is electrically connected described power input interface, and it is isolated transformation to input current, and provides working power for described high-power LED module and described cold light source panel.
2. Medical endoscope cold light source system as claimed in claim 1, is characterized in that, described high-power LED module further is included as the air-cooled radiator that described LED luminescence chip is dispelled the heat, and described air-cooled radiator is electrically connected at described cold light source panel.
3. Medical endoscope cold light source system as claimed in claim 1, it is characterized in that, described cold light source panel comprises record storage unit and the microprocessing unit of mutual electric connection, described record storage unit records and stores accumulative total service time and the illuminance of described LED luminescence chip, described microprocessing unit is according to described accumulative total service time and described illuminance the life-span of described LED luminescence chip being calculated, and the contrast preset value determines whether to carry out early warning.
4. Medical endoscope cold light source system as claimed in claim 3, it is characterized in that, described Medical endoscope cold light source system further comprise the light that described LED luminescence chip is sent carry out the concentration module of optically focused, for the display screen of man-machine interaction, control the adjusting knob of described LED luminescence chip switch and brightness size and the radiator fan dispelled the heat for described Medical endoscope cold light source system; Described concentration module is arranged at a side of described LED luminescence chip emergent ray, and it comprises varifocal battery of lens; Described display screen, described adjusting knob and described radiator fan all are electrically connected at described cold light source panel.
5. Medical endoscope cold light source system as claimed in claim 4, it is characterized in that, described cold light source panel comprises control unit and power cell, described control unit and described power cell all are electrically connected at described insulating power supply, described control unit provides working power for described record storage unit, described microprocessing unit, described display screen and described radiator fan, and described power cell provides working power for described high-power LED module.
6. Medical endoscope cold light source system as claimed in claim 4, is characterized in that, described concentration module further comprises the light collecting barrel of grafting optical fiber, and described light collecting barrel is arranged at the side of described concentration module away from described LED luminescence chip.
7. Medical endoscope cold light source system as claimed in claim 3, is characterized in that, described microprocessing unit comprises LED biometry module based on junction temperature and the LED biometry module based on illuminance;
The described LED biometry module based on junction temperature comprises junction temperature data-reading unit and the first computing unit, described junction temperature data-reading unit is for reading the junction temperature that described junction temperature measurement sensor obtains, the corresponding working time, the historical data of the service time of theoretical work time and described LED luminescence chip, described the first computing unit goes out life-span conversion factor and totally service time accordingly under each junction temperature according to corresponding working time and theoretical work Time Calculation under described each junction temperature, finally according to the standard Life Calculation of described LED luminescence chip, go out the residual life of described LED luminescence chip,
The described LED biometry module based on illuminance comprises illuminance data-reading unit and the second computing unit, described illuminance data-reading unit is for reading the initial illuminance data of described LED luminescence chip and the illuminance that described illuminance measuring quantity sensor obtains, the illuminance that described the second computing unit obtains according to described initial illuminance and described illuminance measuring quantity sensor is calculated the light decay rate of described LED luminescence chip, and contrast the output illumination degree of described LED luminescence chip and use the relation curve of duration, draw the use duration of described LED luminescence chip, finally according to the standard Life Calculation of described LED luminescence chip, go out the residual life of described LED luminescence chip.
8. Medical endoscope cold light source system as claimed in claim 7, it is characterized in that, described cold light source panel further comprises comparing unit and prewarning unit, described comparing unit is for residual life and the described preset value of more described LED luminescence chip, when the residual life of described LED luminescence chip is less than or equal to described preset value, described prewarning unit output early warning signal.
9. Medical endoscope cold light source system as claimed in claim 1, it is characterized in that, described Medical endoscope cold light source system also comprises a cabinet, described power input interface is arranged at the back shroud of described cabinet, and described high-power LED module, described cold light source panel and described medical isolating power all are arranged in described cabinet.
10. a medical endoscope, is characterized in that, described medical endoscope comprises Medical endoscope cold light source system as described as claim 1～9 any one.
11. the method for work as Medical endoscope cold light source system as described in claim 1～9 any one, is characterized in that, comprises the steps:
Initialized self check after S11, starting up, obtained self-detection result;
S12, to carrying out timing the service time of described LED luminescence chip;
S13, the residual life that calculates described LED luminescence chip according to accumulative total service time and the illuminance of described self-detection result and described LED luminescence chip, and the contrast preset value determines whether to carry out early warning;
S14, when the life value calculate obtained is greater than described preset value, entering the normal operation circulation.
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