Endoscope light source device, endoscope system, and light emission control method

Abstract

The embodiment of the invention discloses an endoscope light source device, an endoscope system and a light emitting control method, and belongs to the technical field of cold light sources. In the embodiment of the invention, the endoscope light source device comprises an MCU, a dimming assembly, a timing circuit, a light-emitting circuit and a power supply, and under the condition that the power supply is powered off for a short time (namely, the power-off duration does not exceed a power-off time threshold) and is powered on again, the MCU can read stored first state information based on a timing signal of the timing circuit; and based on the first state information, the light emitting circuit is controlled again through the first control signal to emit the light beam in the first state, that is, the light emitting state adjusted through user operation is recovered, medical personnel do not need to manually adjust the equipment again, and therefore the examination, diagnosis or operation progress of the medical personnel is not delayed.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of cold light sources, and in particular to an endoscope light source device, an endoscope system, and a light emission control method. Background Art

[0002] At present, cold light sources are widely used in the medical field. For example, cold light sources are used in medical endoscopes to facilitate inspection, diagnosis or surgery of the patient's internal body through the light beam emitted by the cold light source. Taking surgery as an example, medical staff need to set the light output state of the cold light source by adjusting the equipment during the preparation of the surgery. During the surgery, the camera module of the endoscope uses the high brightness of the cold light source to shoot the patient's internal body, so that medical staff can perform surgery on the patient by observing clear and stable images.

[0003] However, when using a cold light source, there may be a power outage or power failure, causing the light beam emitted by the cold light source to dim or even not emit light, thereby delaying the medical staff's examination, diagnosis or surgical progress, and even posing a threat to the patient's safety.

[0004] In the related art, after the cold light source loses power or is powered off for a short period of time and then powers on again, it is reset to a non-lighting state by default. Medical staff also need to manually adjust the equipment again to restore the cold light source to the light-emitting state before the power failure. Since it takes some time to adjust the equipment again, this will also delay the progress of medical staff's examination, diagnosis or surgery, and even pose a threat to the safety of patients. Summary of the invention

[0005] The embodiments of the present application provide an endoscope light source device, an endoscope system, and a light emission control method, which can automatically restore the light emission state previously adjusted by the user operation when the power is off for a short time (i.e., the power off time does not exceed the power off time threshold) and then powered on again, without the need for medical personnel to manually adjust the device again, thereby not delaying the medical personnel's inspection, diagnosis, or surgical progress. The technical solution is as follows:

[0006] On the one hand, an endoscope light source device is provided, the endoscope light source device comprising a microcontroller unit MCU, a dimming component, a timing circuit, a light emitting circuit and a power supply;

[0007] The MCU is electrically connected to the dimming component, the timing circuit, the light-emitting circuit and the power supply respectively, and the dimming component, the timing circuit and the light-emitting circuit are also electrically connected to the power supply respectively;

[0008] The MCU is used to store the first state information when receiving the first state information, and output a first control signal to the light-emitting circuit based on the first state information, wherein the first control signal is used to control the light-emitting circuit to emit a light beam in a first state among multiple states, and the first state information is determined by the dimming component according to a detected user operation;

[0009] The MCU is also used to obtain the timing signal of the timing circuit when the power supply is powered off and then powered on again. If the power-off duration indicated by the timing signal does not exceed the power-off time threshold, the first status information is read, and the first control signal is output to the light-emitting circuit again based on the first status information.

[0010] Optionally, the timing signal is a level signal. If the timing signal is a first level signal, the power-off duration indicated by the timing signal does not exceed a power-off time threshold; if the timing signal is a second level signal, the power-off duration indicated by the timing signal exceeds the power-off time threshold.

[0011] Optionally, the timing circuit includes a timer, the timer has a key KEY pin and an output OUT pin, the power supply has a first power supply end, the KEY pin is electrically connected to the first power supply end, and the OUT pin is electrically connected to the MCU;

[0012] In the case where the power supply is powered off, the power supply triggers the KEY pin of the timing circuit to generate and output a power-off signal to the OUT pin through the first power supply end, and the OUT pin generates the first level signal under the triggering of the power-off signal;

[0013] The timer starts timing when the OUT pin generates the first level signal, and continues to output the first level signal through the OUT pin before timing ends. The duration between the timing start time and the timing end time of the timer is equal to the power-off time threshold.

[0014] Optionally, the timing circuit further includes a power supply capacitor, the power supply further includes a second power supply terminal, one end of the power supply capacitor is electrically connected to the second power supply terminal, and the other end is grounded;

[0015] The timer also has a voltage input VIN pin and a ground GND pin, the VIN pin is electrically connected to the second power supply end, and the GND pin is grounded;

[0016] When the power supply is not powered off, the power supply supplies power to the timer through the second power supply end and charges the power supply capacitor. When the power supply is powered off, the power supply capacitor supplies power to the timer.

[0017] Optionally, the power supply further has a third power supply end, the third power supply end is electrically connected to the MCU, and the power supply supplies power to the MCU through the third power supply end;

[0018] The endoscope light source device also includes a power supply cutoff circuit, one end of which is electrically connected to the third power supply end, and the other end is grounded; the power supply cutoff circuit includes a diode, a voltage drop resistor and a voltage drop capacitor connected in series, the positive electrode of the diode is electrically connected to the third power supply end; the ungrounded end of the power supply capacitor is electrically connected between the voltage drop resistor and the voltage drop capacitor;

[0019] The power supply cutoff circuit blocks the power supply capacitor from supplying power to the MCU when the power supply is powered off.

[0020] Optionally, the endoscope light source device further includes a first voltage-dividing circuit, one end of which is electrically connected to the first power supply end, and the other end is grounded; the first voltage-dividing circuit includes a first voltage-dividing resistor and a second voltage-dividing resistor connected in series, and the KEY pin is electrically connected between the first voltage-dividing resistor and the second voltage-dividing resistor;

[0021] The MCU has a first pin and a second pin, the first pin is electrically connected between the first voltage-dividing resistor and the second voltage-dividing resistor, and the second pin is electrically connected to the OUT pin.

[0022] Optionally, the endoscope light source device further includes a first level flip circuit, and the KEY pin is electrically connected between the first voltage-dividing resistor and the second voltage-dividing resistor through the first level flip circuit; and / or,

[0023] The endoscope light source device further includes a second level flip circuit, and the OUT pin is electrically connected to the second pin of the MCU through the second level flip circuit.

[0024] Optionally, the timing signal is a clock signal including the current power-off time. If the time difference between the power-on time and the current power-off time does not exceed the power-off time threshold, the power-off duration indicated by the timing signal does not exceed the power-off time threshold.

[0025] On the other hand, an endoscope system is provided, which includes a light source device and a camera device, and the light source device includes the device as described in the first aspect above.

[0026] On the other hand, a light emitting control method is provided, which is applied to a microcontroller unit MCU included in an endoscope light source device, wherein the endoscope light source device also includes a dimming component, a timing circuit, a light emitting circuit and a power supply, and the light emitting circuit can emit light beams in multiple states; the method includes:

[0027] receiving and storing first state information, where the first state information is determined by the dimming component according to a detected user operation;

[0028] outputting a first control signal to the light-emitting circuit based on the first state information to control the light-emitting circuit to emit a light beam in a first state, wherein the first state is one of the multiple states;

[0029] When the power source is powered off and then powered on again, obtaining a timing signal of the timing circuit;

[0030] If the power-off duration indicated by the timing signal does not exceed the power-off time threshold, the first state information is read, and the first control signal is output to the light-emitting circuit again based on the first state information.

[0031] On the other hand, a computer-readable storage medium is provided, wherein a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the above-mentioned light emission control method are implemented.

[0032] On the other hand, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute the steps of the above-mentioned light emission control method.

[0033] The technical solution provided by the embodiments of the present application can at least bring the following beneficial effects:

[0034] In an embodiment of the present application, the endoscope light source device includes an MCU, a dimming component, a timing circuit, a light-emitting circuit and a power supply. When the power supply is powered off for a short time (i.e., the power-off duration does not exceed the power-off time threshold) and then powered on again, the MCU can read the stored first state information based on the timing signal of the timing circuit, and control the light-emitting circuit to emit a light beam in the first state again through the first control signal based on the first state information, i.e., restore the light output state previously adjusted by user operation, without the need for medical personnel to manually adjust the equipment again, thereby not delaying the medical personnel's inspection, diagnosis or surgical progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 is a schematic structural diagram of an endoscope system provided in an embodiment of the present application;

[0037] Figure 2 is a schematic structural diagram of another endoscope system provided in an embodiment of the present application;

[0038] Figure 3 This is a schematic diagram of the external structure of a cold light source host provided in an embodiment of the present application;

[0039] Figure 4 This is a schematic diagram of the logical structure of a cold light source host provided in an embodiment of the present application;

[0040] Figure 5 It is a structural schematic diagram of an endoscope light source device provided in an embodiment of the present application;

[0041] Figure 6 is a schematic structural diagram of another endoscope light source device provided in an embodiment of the present application;

[0042] Figure 7 is a schematic diagram of a first voltage divider circuit provided in an embodiment of the present application;

[0043] Figure 8 It is a structural schematic diagram of another endoscope light source device provided in an embodiment of the present application;

[0044] Fig. 9 This is a schematic diagram of the connection relationship between a second level flip circuit and other components provided in an embodiment of the present application;

[0045] Fig.10 This is a schematic diagram of the connection relationship between an MCU and other components provided in an embodiment of the present application;

[0046] Fig.11 is a flow chart of a light emitting control method provided in an embodiment of the present application;

[0047] Fig.12 is a signal timing diagram of an endoscope light source device provided by an embodiment of the present application under normal startup conditions;

[0048] Fig.13 This is a signal timing diagram of an endoscope light source device provided by an embodiment of the present application when it is powered on again after being powered off for a long time;

[0049] Fig.14 This is a signal timing diagram of an endoscope light source device provided in an embodiment of the present application when power is lost momentarily and then quickly restored to power. DETAILED DESCRIPTION

[0050] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0051] It should be noted that the system architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0052] At present, medical cold light sources are used in inspections, diagnosis, treatment, and surgery using endoscopes to provide illumination for the field of view of the human body cavity. For example, medical personnel insert a medical endoscope into the human body through a natural cavity or a small surgical incision, and with the help of high-brightness illumination of a cold light source, perform clinical diagnosis of organs in the body through the endoscope's camera device (also understood as an imaging system), and use surgical instruments for diagnosis and treatment.

[0053] The reliability of the light from a medical cold light source is an important guarantee for diagnosis, treatment, and surgery using an endoscope. If the cold light source is abnormal or restarts without emitting light during diagnosis or surgery, it may cause medical accidents and even endanger the patient's life.

[0054] In the related art, cold light sources usually do not emit light by default when they are turned on. Medical staff need to adjust the light state of the cold light source during the preparation for surgery and ensure the stability of the light during diagnosis or surgery. However, more and more high-power and high-radiation devices are integrated in operating rooms and other environments, such as high-power electric knives and large-scale imaging equipment. If the internal power supply voltage of the cold light source drops due to electrical interference or other factors of these devices under abnormal circumstances, the cold light source may restart, and the cold light source will not emit light after restarting, seriously affecting the safety of diagnosis or surgery.

[0055] In order to ensure the light emission stability of the cold light source, the safety of the operation and the safety of the patient, the embodiment of the present application provides an endoscope light source device, an endoscope system and a light emission control method, wherein the endoscope system includes a light source device and a camera device, and the light source device includes an endoscope light source device. The endoscope light source device can adopt the light emission control method to promptly restore the light emission state previously adjusted by the user operation when the cold light source loses power or is powered off for a short time, thereby providing stable and reliable illumination for the camera device.

[0056] It should be understood that the light source device can be a cold light source device or other types of light source devices, and the following embodiments are all introduced by taking the light source device as a cold light source device as an example. In addition, the light source device can be applied not only to endoscopes in the medical field, but also to other instruments in the medical field, and can also be applied to related instruments in other fields. The following embodiments are all introduced by taking the light source device applied to an endoscope in the medical field (that is, the light source device includes an endoscope light source device) as an example.

[0057] Before explaining the light control method provided in the embodiment of the present application in detail, Figures 1 to 4 The implementation environment in which the embodiments of the present application can be applied is introduced.

[0058] Figure 1 Schematic diagram of the structure of an endoscope system provided in an embodiment of the present application. Figure 1 The endoscope system includes a light source device and a camera device.

[0059] The light source device includes a cold light source host and a light guide component (such as Figure 1 The cold light source host has a communication port and a light output interface. The light output interface is used to connect the light guide component to transmit the light beam of the cold light source to the camera device. The communication port can be used to connect with other devices (such as the camera device) for communication.

[0060] The camera device includes a camera host, a video cable and an optical component. The camera host has a communication port and a video output interface. The video output interface is used to output the collected video or picture. The communication port is also used to connect with other devices for communication. The optical component includes a camera, an optical adapter and a mirror rod, etc. Among them, there is a button on the camera, and the medical staff can operate the button to shoot or stop shooting. The optical adapter is used to provide a good view and optimize the field of view, etc., and the mirror rod is used to extend into the patient's body. The video cable is used to connect the camera and the camera host, so as to transmit the video or picture collected by the camera to the camera host.

[0061] Typically, the endoscope system also includes a display device. Figure 1 In the embodiment of the present application, the display device is a separate display. Of course, in some other embodiments, the display device can also be integrated with the camera host.

[0062] Figure 2 It is a schematic diagram of the structure of another endoscope system provided in an embodiment of the present application. Figure 2 and Figure 1 The main difference is that Figure 1The cold light source host and the camera host shown in FIG. 2 are two independent hosts, and the cold light source host and the camera host shown in FIG. 2 are an integrated machine.

[0063] Figure 3 Schematic diagram of the external structure of a cold light source host provided in an embodiment of the present application. Figure 3 The cold light source host has a switch button, dimming components (including but not limited to Figure 3 The components include operating buttons, display screen or touch screen, etc.), light guide interface (i.e. light output interface), communication port and power cord, etc.

[0064] Figure 4 Schematic diagram of the logical structure of a cold light source host provided in an embodiment of the present application. Figure 4 The cold light source host includes an MCU, a dimming component (including a button component and / or a touch screen, etc.), a timing circuit, a light-emitting circuit (including a light-emitting drive component, a light-emitting lamp, and an optical machine component, etc.), a light-guiding component (connecting a light guide beam), a power supply (connected with a power cord), and an interface terminal (such as a communication port). Optionally, the cold light source host also includes a sensor device, a heat sink, and a fan component. The heat sink and the fan component can be used to dissipate heat for the light-emitting circuit.

[0065] Among them, the timing circuit includes a timer, which is also called a timing chip, a timer, a timing chip, an RTC (Real-time Clock) chip or a clock chip, etc.

[0066] In the embodiment of the present application, there are two implementations of the timer. In the first implementation, the timer is used to generate a first level signal and start timing when the power starts to lose power, and flip the first level signal to a second level signal after the timing ends. Correspondingly, the MCU is used to detect whether the timing signal of the timer is a first level signal or a second level signal after the power is powered on again, so as to determine whether the power-off duration of the power exceeds the power-off time threshold. It can be seen that in this implementation, the timer has the function of timing triggering, such as the timer is a timing chip.

[0067] In the second implementation, the timer is used to output a clock signal including the current power-off time to the MCU when the power is turned off. Accordingly, the MCU is used to determine that the power-off duration does not exceed the power-off time threshold when the time difference between the power-on time and the current power-off time does not exceed the power-off time threshold. It can be seen that in this implementation, the timer has the function of outputting a clock signal, for example, the timer is an RTC chip.

[0068] Of course, in the embodiment of the present application, the timer may also have the functions of timing triggering and outputting a clock signal at the same time. In the process of controlling the light emission, only one of these two functions can be used.

[0069] It should be understood that the endoscope light source device provided in the embodiment of the present application can be applied to Figures 1 to 4 The cold light source host shown. Figure 1 and Figure 2 The endoscope system shown, and Figure 3 and Figure 4 The cold light source host shown is not used to limit the embodiments of the present application. The endoscope light source device provided in the embodiments of the present application can also be applied to endoscope systems and cold light source hosts of other structures.

[0070] Next, please combine Figures 5 to 10 The endoscope light source device provided in the embodiment of the present application is introduced.

[0071] Figure 5 is a structural schematic diagram of an endoscope light source device 500 provided in an embodiment of the present application. Figure 5 The endoscope light source device 500 includes an MCU 501, a dimming component 502, a timing circuit 503, a light emitting circuit 504, and a power supply 505. The MCU 501 is electrically connected to the dimming component 502, the timing circuit 503, the light emitting circuit 504, and the power supply 505, respectively. The dimming component 502, the timing circuit 503, and the light emitting circuit 504 are also electrically connected to the power supply 505, respectively.

[0072] MCU501 is used to store the first state information when receiving the first state information, and output a first control signal to the light-emitting circuit 504 based on the first state information. The first control signal is used to control the light-emitting circuit 504 to emit a light beam in a first state among multiple states. The first state information is determined by the dimming component 502 based on the detected user operation.

[0073] That is, the light-emitting circuit 504 can emit light beams in multiple states, and the dimming component 502 is used to detect user operations, generate first state information according to the detected user operations, and send the first state information to the MCU 501, so as to control the light-emitting circuit 504 to emit a light beam in the first state through the MCU 501. The light beam in the first state is a light beam that matches the first state information, that is, a light beam adjusted by the user.

[0074] MCU501 is also used to obtain the timing signal of the timing circuit 503 when the power supply 505 is powered off and then powered on again. If the power-off duration indicated by the timing signal does not exceed the power-off time threshold, the first state information is read and the first control signal is output to the light-emitting circuit 504 based on the first state information again to control the light-emitting circuit 504 to emit a light beam in the first state again.

[0075] That is, the timing circuit 503 is used to generate a timing signal when the power supply 505 is powered off for a short time, and output the timing signal to the MCU501, so as to trigger the MCU501 to read the first status information when the power supply 505 is powered on again, and output the first control signal to the light-emitting circuit 504 based on the first status information again.

[0076] Among them, short-term power failure means that the power failure duration does not exceed the power failure time threshold. The power failure time threshold is a set value, such as 1 minute, 30 seconds or 10 minutes. Optionally, the user can adjust the power failure time threshold according to needs.

[0077] As can be seen from the above, the timing circuit includes a timer, and the timer has at least two implementations. Next, the structure of the timing circuit 503 and the function of each component in the timing circuit 503 in the above two implementations are introduced respectively.

[0078] In the first implementation, the timing signal is a level signal. If the timing signal is a first level signal, the power-off duration indicated by the timing signal does not exceed the power-off time threshold. If the timing signal is a second level signal, the power-off duration indicated by the timing signal exceeds the power-off time threshold. That is, the MCU can determine the power-off duration of the power supply according to the level signal output by the timing circuit.

[0079] Alternatively, see Figure 7 The timing circuit 503 includes a timer 5031, the timer 5031 has a KEY (key) pin and an OUT (output) pin, the power supply 505 has a first power supply end, the KEY pin is electrically connected to the first power supply end, and the OUT pin is electrically connected to the MCU501.

[0080] When the power supply 505 is powered off, the power supply 505 triggers the KEY pin of the timing circuit 503 to generate and output a power-off signal to the OUT pin through the first power supply terminal, and the OUT pin generates a first level signal under the triggering of the power-off signal. The timer 5031 starts timing when the OUT pin generates the first level signal, and continuously outputs the first level signal through the OUT pin before the timing ends. The duration between the timing start time and the timing end time of the timer 5031 is equal to the power-off time threshold.

[0081] At the end of the timing, the timer 5031 outputs a second level signal through the OUT pin, that is, the timer 5031 flips the first level signal to the second level signal. It should be noted that each time the KEY pin of the timer 5031 generates a power-off signal, the timer 5031 restarts the timing.

[0082] Optionally, the first power supply voltage provided by the first power supply terminal of the power supply 505 is, for example, 12V, which is the power supply voltage of the device. Of course, the first power supply voltage provided by the first power supply terminal may also be 3.3V or 5V, etc. The present application embodiment is described by taking the first power supply voltage as 12V as an example. That is, the first power supply terminal is Figure 6 The power supply terminal provides 12V working voltage.

[0083] Alternatively, see Figure 6 The timing circuit 503 also includes a power supply capacitor C1, and the power supply 505 also has a second power supply terminal (such as Figure 6 The timer 5031 also has a VIN (voltage input) pin and a GND (ground) pin. The VIN pin is electrically connected to the second power supply terminal, and the GND pin is grounded. When the power supply 505 is not powered off, the timer 5031 is powered through the second power supply terminal, and the power supply capacitor C1 is charged. When the power supply 505 is powered off, the power supply capacitor C1 is powered for the timer 5031.

[0084] The second power supply terminal provides a second power supply voltage such as the chip's operating voltage 3.3V (volts), and the second power supply terminal can also provide a second power supply voltage of other values. Figure 6 The VCC terminal shown, the second supply voltage is Figure 6 The 3.3V power supply voltage is provided in the VCC terminal after passing through the diode VD1 and the resistor R42.

[0085] The power supply capacitor C1 is a farad capacitor or other type of capacitor capable of storing energy. In the embodiment of the present application, the capacitance stored in the power supply capacitor C1 can support the timer to perform normal timing for a time not less than the power-off time threshold. Optionally, the capacitance value of the power supply capacitor C1 is 0.22F or other values.

[0086] Optionally, the power supply 505 further has a third power supply terminal, the third power supply terminal is electrically connected to the MCU 505, and the power supply 505 supplies power to the MCU 501 through the third power supply terminal. The endoscope light source device 500 further includes a power supply cutoff circuit 506, one end of which is electrically connected to the third power supply terminal and the other end is grounded. Figure 6 The power supply cut-off circuit 506 includes a diode VD1, a voltage drop resistor R42 and a voltage drop capacitor C2 connected in series, the positive electrode of the diode VD1 is electrically connected to the third power supply terminal, and the ungrounded end of the power supply capacitor C1 is electrically connected between the voltage drop resistor R42 and the voltage drop capacitor C2. When the power supply 505 is powered off, the power supply cut-off circuit 506 blocks the power supply capacitor C1 from supplying power to the MCU 501.

[0087] The third power supply terminal can be the same power supply terminal as the second power supply terminal, for example, the second power supply terminal and the third power supply terminal are the same power supply terminal that provides a 3.3V power supply voltage, that is, the third power supply voltage is also the working voltage 3.3V of the chip. Alternatively, the third power supply terminal can be a different power supply terminal from the second power supply terminal, for example, the second power supply terminal provides a 2V power supply voltage, and the third power supply terminal provides a 3.3V power supply voltage. In the embodiment of the present application, the third power supply terminal is Figure 6 The power supply terminal provides 3.3V power supply voltage.

[0088] The diode VD1 has a reverse cutoff function. The resistance value of the voltage-dropping resistor R42 can be 1K or other values. The capacitance value of the voltage-dropping capacitor C2 can be 100nF or other values.

[0089] Optionally, the endoscope light source device 500 further includes a first voltage divider circuit 507, one end of the first voltage divider circuit 507 is electrically connected to the first power supply end, and the other end is grounded. Figure 6 The first voltage-dividing circuit 507 includes a first voltage-dividing resistor 5071 and a second voltage-dividing resistor 5072 connected in series, and the KEY pin of the timer 5031 is electrically connected between the first voltage-dividing resistor 5071 and the second voltage-dividing resistor 5072 .

[0090] That is, the KEY pin of the timer 5031 can detect the voltage value at the connection point between the first voltage-dividing resistor 5071 and the second voltage-dividing resistor 5072. When the power supply 505 fails, the input voltage of the KEY pin can trigger the KEY pin to generate a power-off signal, thereby causing the OUT pin to generate a first level signal in response to the power-off signal.

[0091] In the examples of this application, see Figure 6 MCU501 has at least two pins, including a first pin and a second pin, the first pin is electrically connected between the first voltage-dividing resistor 5071 and the second voltage-dividing resistor 5072 , and the second pin is electrically connected to the OUT pin of the timer 5031 .

[0092] Among them, the first pin of MCU501 is Figure 6 The ADC (Analog-to-Digital Converter) pin shown, the second pin of MCU501 is Figure 6 In some other embodiments, the second pin of MCU501 may also be an ADC pin.

[0093] Optionally, MCU501 can also be used to determine whether the power supply 505 is powered off by detecting the input voltage of the first pin. Further, it can also detect the degree of power off of the power supply 505, such as detecting whether the voltage of the power supply 505 drops below the first voltage threshold and above the minimum critical voltage value. The minimum critical voltage value refers to the lowest voltage value at which the endoscope light source device 500 can work. That is, MCU501 can also automatically sense power off through its own first pin.

[0094] In the embodiment of the present application, when the MCU501 detects that the power supply 505 is powered off through the first pin, it performs a restart operation, and after restarting, reads the input signal of the second pin, which is the timing signal of the timing circuit. Based on the input signal of the second pin, the MCU501 determines whether to perform the operation of reading the first state information and outputting the first control signal to the light-emitting circuit 504 based on the first state information again. That is, if the power-off duration indicated by the input signal of the second pin (i.e., the timing signal) does not exceed the power-off time threshold, the MCU501 determines to perform the operation to restore the previous light-emitting state. If the power-off duration indicated by the input signal of the second pin exceeds the power-off time threshold, the MCU501 determines not to perform the operation, but to perform a normal power-on operation, and controls the light-emitting circuit 504 to the default state, which is a non-light-emitting state or a default light-emitting state.

[0095] It should be understood that when the voltage of the power supply 505 drops to the first voltage threshold, the light emitting circuit 504 begins to be unable to emit a light beam in the first state according to the adjusted light emitting state, that is, the first voltage threshold is the power supply voltage value corresponding to when the light emitting circuit 504 cannot work normally. When the voltage of the power supply 505 continues to drop, in addition to the light emitting circuit 504 not being able to work normally, some other components of the endoscope light source device 500 may also not be able to work normally. However, since the voltage of the power supply 505 has not dropped below the minimum critical voltage value, the MCU501 can still perform a restart operation.

[0096] Taking the power supply voltage of the device as 12V as an example, the first voltage threshold may be 6V, and the minimum critical voltage value may be 1V.

[0097] Figure 7 A schematic diagram of the first voltage divider circuit 507 provided in an embodiment of the present application. Figure 7 In the embodiment of the present application, the resistance values ​​of the first voltage-dividing resistor R5071 and the second voltage-dividing resistor R5072 are 10KΩ (kilo ohms) and 2KΩ, respectively. In some other embodiments, the resistance values ​​of the first voltage-dividing resistor R5071 and the second voltage-dividing resistor R5072 can be determined according to the configuration of the timing circuit actually used, the power supply voltage of the device, the operating voltage of each component in the device, etc.

[0098] Alternatively, see Figure 8 The endoscope light source device 500 further includes a first level flip circuit 508 , and a KEY pin of the timer 5031 is electrically connected between the first voltage-dividing resistor 5071 and the second voltage-dividing resistor 5072 through the first level flip circuit 508 .

[0099] Fig. 9 Schematic diagram of the structure of a first level flip circuit 508 and its connection with other components provided in an embodiment of the present application. Fig. 9 , the first level flip circuit 508 includes resistors R33, R34, R35, R36, and also includes transistors V2 and V3. One end of the resistor R33 is electrically connected between the first voltage-dividing resistor R5071 and the second voltage-dividing resistor R502, and the other end is electrically connected to the base of the transistor V3. One end of the resistor R35 is electrically connected to the second power supply end (such as 3.3V) of the power supply, and the other end is electrically connected to the collector of the transistor V3. The emitters of the transistors V3 and V2 are both grounded. One end of the resistor R34 is electrically connected to the second power supply end of the power supply, and the other end is electrically connected to the collector of the transistor V2. One end of the resistor R36 is electrically connected to the collector of the transistor V3, and the other end is electrically connected to the base of the transistor V2.

[0100] In the embodiment of the present application, the resistors R33, R34, R35, and R36 may be 1KΩ, 10KΩ, 10KΩ, and 1KΩ, respectively. Of course, the resistance values ​​of these four resistors may also be adaptively adjusted.

[0101] It should be understood that a first level flip circuit 508 is added between the KEY pin of the timer 5031 and the power-off detection point (i.e., the connection point between the first voltage-dividing resistor 5071 and the second voltage-dividing resistor 5072), so that the low-level signal (i.e., the low voltage signal of the power supply) at the power-off detection point is flipped into a high-level signal by the first level flip circuit 508, and the first level flip circuit 508 outputs the low-level signal to the KEY pin of the timer 5031, and the KEY pin generates a power-off signal under the triggering of the high-level signal. That is, those skilled in the art can flexibly design the circuit according to the trigger signal of the KEY pin on the timer.

[0102] Similarly, see Figure 6, the endoscope light source device may also include a second level flip circuit 509 (not marked), and the OUT pin of the timer 5031 is electrically connected to the second pin of the MCU501 through the second level flip circuit 509. In this way, a second level flip circuit 509 is added between the OUT pin of the timer 5031 and the second pin of the MCU, so that the high level signal generated by the OUT pin is flipped into a low level signal through the second level flip circuit 509, and the second level flip circuit 509 outputs the low level signal to the second pin of the MCU. The MCU reads the first state information under the triggering of the low level signal, and outputs the first control signal to the light-emitting circuit again based on the first state signal. That is, those skilled in the art can flexibly design the signal that triggers the MCU to perform the corresponding operation as a low level signal or a high level signal.

[0103] Alternatively, see Figure 6 The second level flip circuit 509 includes a resistor R40, a resistor R41 and a transistor V1. One end of the resistor R40 is electrically connected to the OUT pin, and the other end is electrically connected to the base of the transistor V1. One end of the resistor R41 is electrically connected to the second power supply terminal, and the other end is electrically connected to the collector of the transistor V1. The emitter of the transistor V1 is grounded.

[0104] Please refer to the following Fig.10 The connection relationship and functions of the MCU501 and other components in the embodiment of the present application are supplemented. Fig.10 MCU501 also has a grounding pin or interface. The grounding pin or interface on MCU501 is also electrically connected to one end of capacitor C3, and the other end of capacitor C3 is also electrically connected to the third power supply end. Fig.10 The "OFF-ON" signal in the figure indicates a timing signal received.

[0105] In the embodiment of the present application, the capacitance value of the capacitor C3 may be 100 nF, and the capacitance value of the capacitor C3 may also be other values ​​selected according to requirements.

[0106] The above introduces the first implementation method of the timing circuit. Next, the second implementation method of the timing circuit is introduced.

[0107] In the second implementation, the timing signal is a clock signal including the current power-off moment. If the time difference between the moment when the power supply 505 is powered on again and the current power-off moment does not exceed the power-off time threshold, the power-off duration indicated by the timing signal does not exceed the power-off time threshold. The MCU501 reads the first status information and again outputs the first control signal to the light-emitting circuit 504 based on the first status information.

[0108] If the time difference between the moment when the power supply 505 is powered on again and the moment when the power is turned off this time exceeds the power off time threshold, the power off duration indicated by the timing signal exceeds the power off time threshold, and the MCU501 performs a restart operation and controls the light-emitting circuit 504 to the default state according to the normal startup process.

[0109] It should be noted that in this implementation, the timer included in the timing circuit is a device capable of outputting a clock signal, and the timing circuit may include a power supply capacitor similar to that in the first implementation, and the power supply capacitor may supply power to the timer when the power is off, so that the timer can work normally. In addition, since the timing signal is not a high-level signal or a low-level signal, the endoscope light source device may not include a first level flip circuit and a second level flip circuit as in the first implementation.

[0110] From the above embodiments' introduction to each part of the endoscope system, it can be concluded that the embodiment of the present application outputs a timing signal to the MCU through the timing circuit when the power is off, thereby restoring the previous light output state when the power is off for a short time.

[0111] It should be understood that Figures 5 to 10 The endoscope light source device described herein is not intended to limit the present application, and those skilled in the art may Figures 5 to 10 On the basis of the structure and working principle of the endoscope light source device introduced above, the structure of the endoscope light source device 500 is adaptively adjusted or expanded, so as to achieve the effect similar to that of the above embodiment.

[0112] For example, the two level flipping circuits may also be other circuits with a level flipping function. The endoscope light source device 500 may also include more level flipping circuits according to actual design. For another example, the timer may use the power supply capacitor to ensure normal operation in the event of a power failure, or may use a battery or other power storage device to replace the power supply capacitor.

[0113] It should be noted that: the endoscope light source device provided in the above embodiment only uses the division of the above functional modules as an example to illustrate when providing illumination for the endoscope. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the endoscope light source device provided in the above embodiment and the embodiment of the light control method below belong to the same concept, and the specific implementation process can also be found in the method embodiment below, which will not be repeated here.

[0114] Next, the light emitting control method provided in the embodiment of the present application is explained in detail.

[0115] Fig.11 : is a flow chart of a light control method provided in an embodiment of the present application. The method is applied to an MCU included in an endoscope light source device, and the endoscope light source device also includes a dimming component, a timing circuit, a light-emitting circuit and a power supply, and the light-emitting circuit can emit light beams in multiple states. Figures 5 to 10 Any of the endoscope light source devices 500 described above, in a specific implementation, is applied to Figures 1 to 4 Any cold light source host introduced. Please refer to Fig.11 , the method comprises the following steps.

[0116] Step 1101: The dimming component generates first state information according to the detected user operation, and sends the first state information to the MCU.

[0117] In an embodiment of the present application, the light-emitting circuit can emit light beams in multiple states, the dimming component can detect user operations, generate first state information based on the detected user operations, and send the first state information to the MCU.

[0118] The dimming components include but are not limited to operation buttons, display screens and / or touch screens, etc. The light beams in multiple states refer to light beams with different brightness and / or hue, etc. The first state information indicates information such as the brightness value and / or hue adjusted by the user.

[0119] Step 1102: The MCU receives and stores first status information.

[0120] It can be seen from the foregoing that the first state information is determined by the dimming component according to the detected user operation.

[0121] In the embodiment of the present application, the MCU may store the first state information immediately after receiving the first state information, or may store the first state information when a timing signal is subsequently received. The MCU may also store the first state information periodically, for example, storing the current state information as the first state information every ten minutes.

[0122] Optionally, the MCU itself has a storage space, and the MCU stores the first state information in its own storage space. Alternatively, the endoscope light source device also includes a memory, and the MCU can perform read and write operations on the memory, and the MCU stores the first state information in the memory through a write operation.

[0123] Step 1103: The MCU outputs a first control signal to the light-emitting circuit based on the first state information to control the light-emitting circuit to emit a light beam in the first state.

[0124] The first state is one of the above-mentioned states.

[0125] In the embodiment of the present application, the MCU generates a first control signal based on the first state information, and sends the first control signal to the light emitting circuit. After receiving the first control signal, the light emitting circuit emits a light beam in the first state based on the first control signal.

[0126] As can be seen from the above, the light-emitting circuit may include a light-emitting driving component, a light-emitting lamp, and an optomechanical component, etc. The MCU outputs a first control signal to the light-emitting driving circuit, and the light-emitting driving circuit generates a light-emitting driving voltage or a light-emitting driving current to the optomechanical component according to the first control signal. The optomechanical component causes the light-emitting lamp to emit a light beam in a first state under the drive of the light-emitting driving voltage or the light-emitting driving current.

[0127] Step 1104: When the power is off, the timing circuit generates and outputs a timing signal to the MCU.

[0128] In a first implementation, the timing signal is a level signal. The timing signal is a first level signal or a second level signal. If the timing signal is a first level signal, the power-off duration indicated by the timing signal does not exceed the power-off time threshold; if the timing signal is a second level signal, the power-off duration indicated by the timing signal exceeds the power-off time threshold.

[0129] In the second implementation, the timing signal is a clock signal including the current power-off time. If the time difference between the power-on time and the current power-off time does not exceed the power-off time threshold, the power-off duration indicated by the timing signal does not exceed the power-off time threshold.

[0130] Step 1105: When the power is turned off and then on again, the MCU obtains the timing signal.

[0131] In the embodiment of the present application, the MCU obtains the timing signal through the second pin.

[0132] Step 1106: If the power-off duration indicated by the timing signal does not exceed the power-off time threshold, the MCU reads the first state information, and outputs the first control signal to the light-emitting circuit again based on the first state information.

[0133] In the embodiment of the present application, if the power-off duration indicated by the timing signal does not exceed the power-off time threshold, indicating that the power-off time is relatively short, the MCU controls the light-emitting circuit to restore the previous light-emitting state.

[0134] Please refer to the following Figure 12 to Figure 14 The signal timing diagram shown further explains the light emitting control method provided in the embodiment of the present application. Figure 12 to Figure 14In the embodiment, taking the timing circuit as the first implementation method introduced above as an example, that is, the timing signal is a level signal, "12V" represents the signal timing diagram corresponding to the power supply voltage of the endoscope light source device, such as the power supply voltage of the first power supply end in the embodiment of the present application is 12V under normal circumstances. "3.3V" represents the signal timing diagram corresponding to the working voltage of the chip, such as the normal working voltage of the MCU is 3.3V, that is, the power supply voltage of the third power supply end in the embodiment of the present application is 3.3V under normal circumstances. "RES" represents the restart (reset) signal timing diagram of the endoscope light source device. "DET1" represents the input voltage timing diagram of the KEY pin of the timer. "OFF-ON" represents the input signal timing diagram received by the second pin of the MCU.

[0135] Fig.12 1 is a signal timing diagram of an endoscope light source device provided by an embodiment of the present application under normal startup conditions. Fig.12 When the endoscope light source device is started normally, the signals corresponding to "12V", "3.3V", "RES" and "DET1" all rise rapidly from low level (ie 0V) to their respective high levels. For example, the signal corresponding to "12V" changes rapidly from low level to 12V high level, the signal corresponding to "3.3V" changes rapidly from low level to 3.3V high level, and the signal corresponding to "RES" changes from low level to high level due to the MCU executing the startup operation. Since the endoscope light source device is started normally, the signal corresponding to "OFF-ON" defaults to low level and no level flip occurs.

[0136] Fig.13 1 is a signal timing diagram of an endoscope light source device provided by an embodiment of the present application when it is powered on again after a long period of power outage. Fig.13 In the case where the endoscope light source device is powered off for a long time, at the moment of power off, the signals corresponding to "12V", "3.3V" and "DET1" all drop rapidly from their respective high levels to low levels, and the low levels at this time cannot support the operation of the endoscope light source device. The signal corresponding to "RES" will change from a low level to a high level because the MCU attempts to perform a restart operation, but the power off will cause the endoscope light source device to be unable to work, so the restart fails, and the signal corresponding to "RES" remains at a high level for a very short time. Similarly, the signal corresponding to "OFF-ON" will change from a high level to a low level due to power off, but since the endoscope light source device is powered off for a long time, the MCU controls the restart to the default state.

[0137] Fig.14 This is a signal timing diagram of an endoscope light source device provided by an embodiment of the present application when the power is lost for a short period of time (such as a momentary power loss) and then quickly powered on again. Fig.14In the case where the endoscope light source device loses power momentarily and is quickly powered on again, at the moment of the momentary power failure, the signals corresponding to "12V", "3.3V", and "DET1" all drop rapidly from their respective high levels to low levels, and the low level at this time can still support the operation of the endoscope light source device. The signal corresponding to "RES" will change from a low level to a high level because the MCU attempts to perform a restart operation, and because the endoscope light source device is still able to work, the restart is successful, and the signal corresponding to "RES" will remain at a high level. Similarly, the signal corresponding to "OFF-ON" will change from a low level to a high level due to the power failure, and because the power supply is powered off for a short time, the signal corresponding to "OFF-ON" will trigger the MCU to read the stored first state information, and restore the previous light output state based on the first state information.

[0138] To summarize, in an embodiment of the present application, the endoscope light source device includes an MCU, a dimming component, a timing circuit, a light-emitting circuit and a power supply. When the power supply is powered off for a short time (i.e., the power-off duration does not exceed the power-off time threshold) and then powered on again, the MCU can read the stored first state information based on the timing signal of the timing circuit, and control the light-emitting circuit to emit a light beam in the first state again through the first control signal based on the first state information, i.e., restore the light output state previously adjusted by user operation, without the need for medical staff to manually adjust the equipment again, thereby not delaying the medical staff's inspection, diagnosis or surgical progress.

[0139] All the above optional technical solutions can be combined in any way to form optional embodiments of the present application, and the embodiments of the present application will not be described in detail one by one.

[0140] In some embodiments, a computer-readable storage medium is further provided, in which a computer program is stored, and when the computer program is executed by a processor, the steps of the light-emitting control method in the above embodiment are implemented. For example, the computer-readable storage medium may be a ROM (Read-Only Memory), a RAM (Random Access Memory), a CD-ROM (Compact Disc Read-Only Memory), a magnetic tape, a floppy disk, an optical data storage device, etc.

[0141] It is worth noting that the computer-readable storage medium mentioned in the embodiments of the present application may be a non-volatile storage medium, in other words, a non-transitory storage medium.

[0142] It should be understood that all or part of the steps to implement the above embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The computer instructions can be stored in the above-mentioned computer readable storage medium.

[0143] That is, in some embodiments, a computer program product including instructions is also provided, which, when executed on a computer, enables the computer to execute the steps of the above-mentioned method. . .

[0144] It should be understood that the "at least one" mentioned herein refers to one or more, and "multiple" refers to two or more. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second" and the like are used to distinguish the same items or similar items with basically the same functions and effects. Those skilled in the art can understand that the words "first", "second" and the like do not limit the quantity and execution order, and the words "first", "second" and the like do not limit them to be necessarily different.

[0145] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data used for analysis, stored data, displayed data, etc.) and signals involved in the embodiments of the present application are all authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards of relevant countries and regions.

[0146] The above-mentioned embodiments are provided for the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An endoscope light source device, characterized in that: The endoscope light source device includes a microcontroller unit MCU, a dimming component, a timing circuit, a light-emitting circuit and a power supply; The MCU is electrically connected to the dimming component, the timing circuit, the light-emitting circuit and the power supply respectively, and the dimming component, the timing circuit and the light-emitting circuit are also electrically connected to the power supply respectively; The MCU is used to store the first state information when receiving the first state information, and output a first control signal to the light-emitting circuit based on the first state information, wherein the first control signal is used to control the light-emitting circuit to emit a light beam in a first state among multiple states, and the first state information is determined by the dimming component according to a detected user operation; The MCU is also used to obtain the timing signal of the timing circuit when the power supply is powered off and then powered on again. If the power-off duration indicated by the timing signal does not exceed the power-off time threshold, the first status information is read, and the first control signal is output to the light-emitting circuit again based on the first status information.

2. The endoscope light source device according to claim 1, characterized in that: The timing signal is a level signal. If the timing signal is a first level signal, the power-off duration indicated by the timing signal does not exceed the power-off time threshold; if the timing signal is a second level signal, the power-off duration indicated by the timing signal exceeds the power-off time threshold.

3. The endoscope light source device according to claim 2, characterized in that: The timing circuit includes a timer, the timer has a key KEY pin and an output OUT pin, the power supply has a first power supply end, the KEY pin is electrically connected to the first power supply end, and the OUT pin is electrically connected to the MCU; In the case where the power supply is powered off, the power supply triggers the KEY pin of the timing circuit to generate and output a power-off signal to the OUT pin through the first power supply end, and the OUT pin generates the first level signal under the triggering of the power-off signal; The timer starts timing when the OUT pin generates the first level signal, and continues to output the first level signal through the OUT pin before timing ends. The duration between the timing start time and the timing end time of the timer is equal to the power-off time threshold.

4. The endoscope light source device according to claim 3, characterized in that: The timing circuit further includes a power supply capacitor, the power supply further includes a second power supply terminal, one end of the power supply capacitor is electrically connected to the second power supply terminal, and the other end is grounded; The timer also has a voltage input VIN pin and a ground GND pin, the VIN pin is electrically connected to the second power supply end, and the GND pin is grounded; When the power supply is not powered off, the power supply supplies power to the timer through the second power supply end and charges the power supply capacitor. When the power supply is powered off, the power supply capacitor supplies power to the timer.

5. The method according to claim 4, characterized in that The power supply further has a third power supply end, the third power supply end is electrically connected to the MCU, and the power supply supplies power to the MCU through the third power supply end; The endoscope light source device also includes a power supply cutoff circuit, one end of which is electrically connected to the third power supply end, and the other end is grounded; the power supply cutoff circuit includes a diode, a voltage drop resistor and a voltage drop capacitor connected in series, the positive electrode of the diode is electrically connected to the third power supply end; the ungrounded end of the power supply capacitor is electrically connected between the voltage drop resistor and the voltage drop capacitor; The power supply cutoff circuit blocks the power supply capacitor from supplying power to the MCU when the power supply is powered off.

6. The endoscope light source device according to any one of claims 3 to 5, characterized in that: The endoscope light source device further comprises a first voltage-dividing circuit, one end of which is electrically connected to the first power supply end, and the other end is grounded; the first voltage-dividing circuit comprises a first voltage-dividing resistor and a second voltage-dividing resistor connected in series, and the KEY pin is electrically connected between the first voltage-dividing resistor and the second voltage-dividing resistor; The MCU has a first pin and a second pin, the first pin is electrically connected between the first voltage-dividing resistor and the second voltage-dividing resistor, and the second pin is electrically connected to the OUT pin.

7. The endoscope light source device according to claim 6, characterized in that: The endoscope light source device further includes a first level flip circuit, and the KEY pin is electrically connected between the first voltage-dividing resistor and the second voltage-dividing resistor through the first level flip circuit; and / or, The endoscope light source device further includes a second level flip circuit, and the OUT pin is electrically connected to the second pin of the MCU through the second level flip circuit.

8. The endoscope light source device according to claim 1, characterized in that: The timing signal is a clock signal including the current power-off time. If the time difference between the power-on time and the current power-off time does not exceed the power-off time threshold, the power-off duration indicated by the timing signal does not exceed the power-off time threshold.

9. An endoscope system, characterized in that: The endoscope system includes a light source device and a camera device, and the light source device includes the device as described in any one of claims 1-8.

10. A light emission control method, characterized in that: The microcontroller unit MCU included in the endoscope light source device further includes a dimming component, a timing circuit, a light-emitting circuit and a power supply, and the light-emitting circuit can emit light beams in multiple states; the method includes: receiving and storing first state information, where the first state information is determined by the dimming component according to a detected user operation; outputting a first control signal to the light-emitting circuit based on the first state information to control the light-emitting circuit to emit a light beam in a first state, wherein the first state is one of the multiple states; When the power source is powered off and then powered on again, obtaining a timing signal of the timing circuit; If the power-off duration indicated by the timing signal does not exceed the power-off time threshold, the first state information is read, and the first control signal is output to the light-emitting circuit again based on the first state information.

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