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 button on-off controller, a light emitting circuit and a power supply, the button on-off controller can generate a first enable signal to the MCU under the condition that the voltage of the power supply drops below a first voltage threshold and above a minimum critical voltage value, the MCU responds to the first enable signal, and the light emitting circuit emits light to the MCU. And reading the stored first state information, and controlling the light emitting circuit to emit the light beam in the first state again through the first control signal based on the first state information. In other words, the scheme can quickly recover the light emitting state adjusted by the user operation before under the condition of instant power failure of the power supply, and related personnel do not need to manually adjust the equipment again.

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, electromagnetic interference, unstable power supply voltage, etc. may cause the cold light source to lose power momentarily. The momentary power failure will cause 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 for a moment 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 medical staff's examination, diagnosis or surgery progress, and even pose a threat to the patient's safety. Summary of the invention

[0005] The embodiment of the present application provides an endoscope light source device, an endoscope system and a light emission control method, which can enable the endoscope light source device to promptly restore to a previously adjusted light emission state in the event of a momentary power failure. The technical solution is as follows:

[0006] On the one hand, an endoscope light source device is provided, the endoscope light source device comprising an MCU (Microcontroller Unit), a dimming component, a button on-off controller, a light-emitting circuit and a power supply;

[0007] The MCU is electrically connected to the dimming component, the button on-off controller, the light-emitting circuit and the power supply respectively, and the button on-off controller, the dimming component 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 read the first status information when receiving a first enable signal, and output the first control signal to the light-emitting circuit based on the first status information again. The first enable signal is a signal generated by the button on-off controller when the voltage of the power supply drops below a first voltage threshold and above a minimum critical voltage value. The minimum critical voltage value is the lowest voltage value at which the endoscope light source device can operate.

[0010] Optionally, the power supply has a first power supply end and a second power supply end, the button on-off controller is electrically connected to the first power supply end, and the power supply provides a first power supply voltage to the button on-off controller through the first power supply end;

[0011] The endoscope light source device also includes a first voltage-dividing circuit, one end of which is electrically connected to the second 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 button on-off controller has a button PB (Push Button) pin, and the PB pin is electrically connected between the first voltage-dividing resistor and the second voltage-dividing resistor.

[0012] Optionally, the MCU is also used for:

[0013] When it is detected that the voltage of the power supply drops to a second voltage threshold, performing a restart operation, the second voltage threshold being less than the first voltage threshold;

[0014] After the restart operation is performed, if the first enable signal is detected, the first state information is read again in response to the first enable signal, and the first control signal is output to the light emitting circuit again based on the first state information.

[0015] Optionally, the power supply has a third power supply end, the MCU is electrically connected to the third power supply end, and the power supply provides a third power supply voltage to the MCU through the third power supply end;

[0016] The endoscope light source device further includes a second voltage-dividing circuit, one end of which is electrically connected to the third power supply end, and the other end is grounded; the second voltage-dividing circuit includes a third voltage-dividing resistor and a fourth voltage-dividing resistor connected in series, and the MCU has a first pin, and the first pin is electrically connected between the third voltage-dividing resistor and the fourth voltage-dividing resistor;

[0017] The MCU is used to determine whether the voltage of the power supply drops below the second voltage threshold and above the minimum critical voltage value by detecting the voltage of the first pin.

[0018] Optionally, the first pin is an ADC (Analog-to-Digital Converter) pin.

[0019] Optionally, the MCU has a second pin, the button on / off controller has an EN (Enable) pin, and the second pin is electrically connected to the EN pin;

[0020] The button on-off controller is used to output the first enable signal through the EN pin.

[0021] Optionally, the second pin is a GPIO (General-purpose input / output) pin.

[0022] 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.

[0023] On the other hand, a light emitting control method is provided, which is applied to an MCU included in an endoscope light source device, wherein the endoscope light source device also includes a dimming component, a button on / off controller, a light emitting circuit and a power supply, wherein the light emitting circuit can emit light beams in multiple states; the method includes:

[0024] receiving and storing first state information, where the first state information is determined by the dimming component according to a detected user operation;

[0025] 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;

[0026] Receiving a first enable signal triggered by the button on-off controller when the voltage of the power supply drops below a first voltage threshold and above a minimum critical voltage value, wherein the minimum critical voltage value is a minimum voltage value at which the endoscope light source device can operate;

[0027] In response to the first enable signal, 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 to control the light emitting circuit to continue to emit the light beam in the first state.

[0028] Optionally, the method further comprises:

[0029] When it is detected that the power supply voltage drops to a second voltage threshold, performing a restart operation, the second voltage threshold being less than the first voltage threshold;

[0030] After performing the restart operation, if the first enable signal is detected, the first state information is read again in response to the first enable signal, and the first control signal is output to the light-emitting circuit again based on the first state information to control the light-emitting circuit to continue to emit the light beam in the first state.

[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 button on-off controller, a light-emitting circuit, and a power supply. The button on-off controller can generate a first enable signal to the MCU when the voltage of the power supply drops below the first voltage threshold and above the minimum critical voltage value. The MCU responds to the first enable signal, reads the stored first state information, and controls the light-emitting circuit to emit a light beam in the first state through the first control signal again based on the first state information. That is, this solution can quickly restore the light output state previously adjusted by the user operation when the power supply is instantly cut off, without the need for relevant personnel to manually adjust the equipment again. 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 1is 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 is a schematic diagram of a second voltage divider circuit provided in an embodiment of the present application;

[0044] Fig. 9 This is a schematic diagram of the connection relationship between a button on-off controller 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 the power is off for a long time or the power is turned off and then on manually;

[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 in the event of a momentary power failure of the cold light source, 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 1 The 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 key component and / or a touch screen, etc.), a button on / off controller, 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 button on-off controller is also called a button off controller, a button on-off controller, a button on / off controller, a button enable chip, a button on-off control chip, etc. The model of the button on-off controller can be LTC2950, ​​LTC2951, etc.

[0066] 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.

[0067] Next, please combine Figures 5 to 10 The endoscope light source device provided in the embodiment of the present application is introduced.

[0068] 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 button on / off controller 503, a light emitting circuit 504, and a power supply 505. The MCU 501 is electrically connected to the dimming component 502, the button on / off controller 503, the light emitting circuit 504, and the power supply 505, respectively. The button on / off controller 503, the dimming component 502, and the light emitting circuit 504 are also electrically connected to the power supply 505, respectively.

[0069] 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.

[0070] 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.

[0071] MCU501 is also used to read the first status information when receiving the first enable signal, and output the first control signal to the light-emitting circuit 504 based on the first status information. The first enable signal is a signal generated by the button on / off controller 503 when 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 is the lowest voltage value at which the endoscope light source device 500 can operate.

[0072] That is, the button on-off controller 503 is used to generate a first enable signal when the voltage of the power supply 505 drops below the first voltage threshold and above the minimum critical voltage value, and output the first enable signal to MCU501 to trigger MCU501 to read the first status information, and again output the first control signal to the light-emitting circuit 504 based on the first status information.

[0073] The voltage of the power supply 505 drops below the first voltage threshold and above the minimum critical voltage value, indicating that the power supply has a momentary power failure, but due to the small power failure, the components in the endoscope light source device 500 can still work. The button on-off controller 503 can trigger the MCU 501 through the first enable signal to control the light-emitting circuit 504 to restore the previously adjusted light-emitting state when the power supply is momentarily powered off but the endoscope light source device 500 can still work.

[0074] Optionally, the power supply 505 has a first power supply terminal and a second power supply terminal. The first power supply terminal provides a first power supply voltage, such as the chip's operating voltage 3.3V (volts), and the second power supply terminal provides a second power supply voltage, such as the device's power supply voltage 12V. Of course, the second power supply voltage of the second power supply terminal can also be 3.3V. In the embodiments of the present application, the first power supply voltage is 3.3V and the second power supply voltage is 12V. That is, the first power supply terminal is Figure 6The power supply terminal provides 3.3V working voltage, and the second power supply terminal is Figure 6 The power supply terminal that provides 12V power supply voltage.

[0075] The button on-off controller 503 is electrically connected to the first power supply terminal, and the power supply 505 provides a first power supply voltage to the button on-off controller 503 through the first power supply terminal. The endoscope light source device 500 also includes a first voltage divider circuit 506, one end of the first voltage divider circuit 506 is electrically connected to the second power supply terminal, and the other end is grounded (GND in the figure indicates grounding); the first voltage divider circuit 506 includes a first voltage divider resistor R5061 and a second voltage divider resistor R5062 connected in series, and the button on-off controller 503 has a PB (button) pin, and the PB pin is electrically connected between the first voltage divider resistor R5061 and the second voltage divider resistor R5062.

[0076] In the embodiment of the present application, the dimming component 502 is also electrically connected to the first power supply terminal, and the power supply 505 provides the first power supply voltage to the dimming component 502 through the first power supply terminal. In some other embodiments, the power supply voltage of the dimming component 502 may not be the first power supply voltage.

[0077] In addition, if Figure 6 As shown, the button on-off controller 503 also has a VIN (voltage input) pin and an EN pin, and the VIN pin of the button on-off controller 503 is electrically connected to the first power supply terminal. The MCU501 has a second pin, and the second pin is electrically connected to the EN pin of the button on-off controller 503. The button on-off controller 503 is used to output a first enable signal through the EN pin.

[0078] Among them, the second pin of MCU501 is Figure 6 In some other embodiments, the second pin of MCU501 may also be an ADC pin.

[0079] In order to enable the input voltage of the PB pin to trigger the PB pin to generate a power-off signal (equivalent to a button action) when the voltage of the power supply 505 drops to the first voltage threshold, so that the button on-off controller 503 generates a first enable signal in response to the power-off signal, the ratio of the first voltage-dividing resistor R5061 to the second voltage-dividing resistor R5062 should be larger. Exemplarily, the ratio of the first voltage-dividing resistor R5061 to the second voltage-dividing resistor R5062 is greater than the first ratio.

[0080] Figure 7 A schematic diagram of a first voltage divider circuit provided in an embodiment of the present application. In the embodiment of the present application, the resistance values ​​of the first voltage divider resistor R5061 and the second voltage divider resistor R5062 are respectively determined by testing as follows: Figure 7In some other embodiments, the resistance values ​​of the first voltage-dividing resistor R5061 and the second voltage-dividing resistor R5062 can be determined according to the configuration of the button on-off controller actually used, the power supply voltage of the device, the operating voltage of each component in the device, etc.

[0081] Exemplarily, when the endoscope light source device 500 is working normally, the input voltage of the PB pin is 1V to 2V, the trigger voltage of the PB pin is 1V, and when the input voltage of the PB pin is lower than 1V, a power-off signal is generated, and the power-off signal triggers the EN pin to output an OFF-ON flip signal, and the OFF-ON flip signal is the first enable signal. For example, the EN pin defaults to a low-level signal, that is, the OFF-ON flip signal defaults to a low-level signal, and the output signal of the EN pin flips to a high-level signal after being triggered by the power-off signal, and the high-level signal is the first enable signal.

[0082] Optionally, the MCU 501 is further configured to perform a restart operation when it is detected that the voltage of the power source 505 drops to a second voltage threshold, and after the restart operation is performed, if the first enable signal is detected, the MCU 501 responds to the first enable signal, reads the first state information again, and outputs the first control signal to the light emitting circuit 504 again based on the first state information. The second voltage threshold is less than the first voltage threshold.

[0083] Among them, after executing the restart operation, detecting the first enable signal indicates that the voltage of the power supply has not dropped below the minimum critical voltage value, and the key on / off controller is still continuously outputting the first enable signal, so MCU501 can re-control the light-emitting circuit 504 to restore the previous light-emitting state.

[0084] 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 to the second voltage threshold, in addition to the light-emitting circuit 504 not being able to work normally, some other components of the endoscope light source device 500 also cannot 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 and re-control the light-emitting circuit 504 to restore the previous light-emitting state.

[0085] Taking the power supply voltage of the device as 12V as an example, the first voltage threshold may be 6V, the second voltage threshold may be 3V, and the minimum critical voltage value may be 1V.

[0086] Optionally, the power supply 505 further has a third power supply terminal, the MCU501 is electrically connected to the third power supply terminal, and the power supply 505 provides a third power supply voltage to the MCU501 through the third power supply terminal.

[0087] Optionally, the third power supply terminal can be the same power supply terminal as the first power supply terminal, for example, the first 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 first power supply terminal, for example, the first power supply terminal provides a 3.3V power supply voltage, and the third power supply terminal provides a 5V power supply voltage. In the embodiment of the present application, the first power supply terminal and the third power supply terminal are both Figure 6 The power supply terminal provides 3.3V power supply voltage.

[0088] like Figure 6 As shown, the endoscope light source device 500 further includes a second voltage divider circuit 507, one end of which is electrically connected to the third power supply end (such as 3.3V), and the other end is grounded; the second voltage divider circuit 507 includes a third voltage divider resistor R5071 and a fourth voltage divider resistor R5072 connected in series, and the MCU501 has a first pin, which is electrically connected between the third voltage divider resistor R5071 and the fourth voltage divider resistor R5072. The MCU501 is used to determine whether the voltage of the power supply 505 drops below the second voltage threshold and above the minimum critical voltage value by detecting the voltage of the first pin.

[0089] The first pin is Figure 6 ADC (Analog-to-Digital Converter) pins shown.

[0090] From the above, it can be seen that the endoscope light source device in the embodiment of the present application can realize two-level power-off detection for instantaneous power failure. The power-off voltage threshold corresponding to the first-level power-off detection is the first voltage threshold, and the power-off voltage threshold corresponding to the second-level power-off detection is the second voltage threshold. The MCU can sense the first-level power failure by triggering the first enable signal of the controller through the button, so as to quickly restore the previous light-emitting state before restarting. The MCU can also automatically sense the second-level power failure through its own first pin, thereby executing the restart operation and quickly restoring the previous light-emitting state after restarting. Simply put, the first-level power-off detection is earlier than the second power-off detection.

[0091] In order to make the first-level power-off detection earlier than the second-level power-off detection, when the resistance values ​​of the first voltage-dividing resistor R5061 and the second voltage-dividing resistor R5062 are determined to be 10KΩ and 2KΩ respectively through testing, see Figure 8, through testing, it is also determined that the resistance values ​​of the third voltage-dividing resistor R5071 and the fourth voltage-dividing resistor R5072 are 10KΩ and 20KΩ respectively. In some other embodiments, the resistance values ​​of the first voltage-dividing resistor R5061 and the second voltage-dividing resistor R5062 can be determined according to the configuration of the button on-off controller actually used, the power supply voltage of the device, the working voltage of each component in the device, etc.

[0092] See also Figure 6 The push button on / off controller 503 has at least 8 pins in total. In addition to the VIN pin, PB pin and EN pin described above, see Fig. 9 The button on / off controller 503 also has five pins: an ONT pin, a GND pin, an OFFT pin, a KILL pin, and an INT pin. Fig. 9 The connection relationship and functions of the five pins of the button on-off controller 503 in the embodiment of the present application and other components are supplemented.

[0093] See also Fig. 9 , the ONT pin is electrically connected to one end of the capacitor C1, and the other end of the capacitor C1 is grounded. The OFFT pin is electrically connected to one end of the capacitor C2, and the other end is grounded. In the embodiment of the present application, the capacitors C1 and C2 are related to the response time (or response speed) of the button on-off controller 503, and the response time of the button on-off controller 503 refers to the time from the PB pin receiving the low-level trigger signal to the EN pin outputting the first enable signal. The PB pin receiving the low-level trigger signal refers to a low voltage signal caused by the voltage of the power supply 505 dropping below the first voltage threshold.

[0094] In the embodiment of the present application, the parameter values ​​of C1 and C2 may be 100nF / 16V, which means that the capacitance values ​​of C1 and C2 are both 100nF, and the working voltage (ie, withstand voltage) is 16V. The parameter values ​​of C1 and C2 may also be other values ​​selected according to requirements, such as 1nF / 16V.

[0095] In some other embodiments, the ONT pin and the OFFT pin may not be connected to other components such as capacitors, so that the button on / off controller 503 works according to the default response time and the response time cannot be adjusted.

[0096] The GND pin is grounded. The KILL pin and the INT pin are both electrically connected to one end of the resistor R33, and the other end of the resistor R33 is electrically connected to the first power supply end (such as 3.3V). In the embodiment of the present application, the resistance value of the resistor R33 can be 10KΩ or other values.

[0097] 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.10MCU501 also has a ground pin or interface. The ground 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. In the embodiment of the present application, the capacitance value of capacitor C3 can be 100nF, and the capacitance value of capacitor C3 can also be selected from other values ​​according to requirements.

[0098] From the above embodiments, it can be concluded that the embodiment of the present application triggers the MCU to implement primary power failure detection through the button on-off controller and the first voltage divider circuit, so that the previous light output state can be quickly restored in the case of a momentary power failure and a small power failure. The secondary power failure detection is implemented by the MCU detecting the second voltage divider circuit, so that the system can be restarted and the previous light output state can be quickly restored in the case of a momentary power failure but a large power failure.

[0099] 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.

[0100] For example, a level flip circuit can be added between the EN pin of the button on / off controller and the second pin of the MCU, so that the high-level signal generated by the EN pin is flipped into a low-level signal through the level flip circuit, and the level flip circuit 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 of the first-level power-off detection to be a low-level signal or a high-level signal.

[0101] 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.

[0102] Next, the light emitting control method provided in the embodiment of the present application is explained in detail.

[0103] 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 button on / off controller, 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.

[0104] Step 1101: The dimming component generates first state information according to the detected user operation, and sends the first state information to the MCU.

[0105] 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.

[0106] 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.

[0107] Step 1102: The MCU receives and stores first status information.

[0108] It can be seen from the foregoing that the first state information is determined by the dimming component according to the detected user operation.

[0109] 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 the first enable 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.

[0110] 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.

[0111] 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 a first state.

[0112] The first state is one of the above-mentioned states.

[0113] 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.

[0114] 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.

[0115] Step 1104: When the voltage of the power source drops below the first voltage threshold and above the minimum critical voltage value, the button on / off controller generates and outputs a first enable signal to the MCU.

[0116] The minimum critical voltage value is the lowest voltage value at which the endoscope light source device can operate.

[0117] The power supply may cause the internal power supply voltage of the endoscope light source device to drop due to electrical interference from high-power and high-radiation equipment or other factors. In this case, the button on-off controller in the embodiment of the present application can generate and output a first enable signal to the MCU.

[0118] Exemplarily, the button on-off controller includes a PB pin and an EN pin. When the voltage of the power supply drops to a first voltage threshold, the PB pin can generate a power-off signal, which triggers the EN pin to generate a first enable signal. The EN pin defaults to a low-level signal, and the first enable signal generated by the trigger is a high-level signal.

[0119] Step 1105: The MCU responds to the first enable signal, reads the first status information, and outputs the first control signal to the light-emitting circuit again based on the first status information.

[0120] In an embodiment of the present application, after receiving the first enable signal, the MCU responds to the first enable signal, reads the first state information, and again outputs the first control signal to the light-emitting circuit based on the first state information to control the light-emitting circuit to continue to emit a light beam in the first state.

[0121] Optionally, the MCU can also perform a restart operation when it detects that the power supply voltage drops to a second voltage threshold. After the restart operation is performed, if the first enable signal is detected, indicating that the power supply voltage has not dropped below the minimum critical voltage value, and the key on / off controller is still continuously outputting the first enable signal, the MCU responds to the first enable signal, reads the first state information again, and outputs the first control signal to the light-emitting circuit based on the first state information again, so as to control the light-emitting circuit to continue to emit a light beam in the first state. The second voltage threshold is less than the first voltage threshold.

[0122] Among them, the MCU can detect whether the voltage of the power supply drops below the second voltage threshold and above the minimum critical voltage value according to the input voltage of the first pin (such as the ADC pin). For example, when the input voltage of the first pin is lower than the first voltage value and higher than the second voltage value, the MCU determines that the voltage of the power supply drops below the second voltage threshold and above the minimum critical voltage value. When the input voltage of the first pin is higher than or equal to the first voltage value, the MCU determines that the voltage of the power supply does not drop below the second voltage threshold.

[0123] In addition, the MCU can periodically detect whether the voltage of the power supply drops below the second voltage threshold and above the minimum critical voltage value. The period of the MCU periodically detecting the power supply voltage can be 1 second or 100 milliseconds, etc.

[0124] As can be seen from the above, the endoscope light source device in the embodiment of the present application can realize two-level power-off detection for instantaneous power failure, the power-off voltage threshold corresponding to the first-level power-off detection is the first voltage threshold, and the power-off voltage threshold corresponding to the second-level power-off detection is the second voltage threshold. The MCU can sense the first-level power failure through the triggering of the first enable signal of the controller through the button, so as to quickly restore the previous light-emitting state before restarting. The MCU can also actively sense the second-level power failure through its own first pin, so as to perform a restart operation and quickly restore the previous light-emitting state after restarting.

[0125] It should be understood that the MCU controls the light-emitting circuit to emit the light beam in the first state again after the power is instantly cut off and then powered on again.

[0126] In an embodiment of the present application, if the MCU detects that the signal generated by the button on-off controller is not the first enable signal, such as not a high-level signal, after executing the restart operation, the MCU starts up the endoscope light source device normally and controls the light-emitting circuit to emit a light beam in a default state or emit no light by default.

[0127] For example, when the endoscope light source device is powered off for a long time, after executing the restart operation, the MCU detects that the signal generated by the button on-off controller is a low-level signal. The MCU then starts up the endoscope light source device normally and controls the light-emitting circuit to not emit light by default.

[0128] 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 14 In the figure, "12V" represents the signal timing diagram corresponding to the power supply voltage of the endoscope light source device, for example, the power supply voltage of the second power supply terminal 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, for example, the normal working voltage of the MCU and the button on-off controller is 3.3V, that is, the power supply voltage of the first power supply terminal 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 first pin of the MCU. "DET2" represents the input voltage timing diagram of the PB pin of the button on-off controller. "OFF-ON" represents the output signal timing diagram of the EN pin of the button on-off controller.

[0129] 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", "DET1" and "DET2" all rise rapidly from a low level (i.e. 0V) to their respective high levels. For example, the signal corresponding to "12V" changes rapidly from a low level to a high level of 12V, the signal corresponding to "3.3V" changes rapidly from a low level to a high level of 3.3V, and the signal corresponding to "RES" changes from a low level to a high level due to the MCU performing a startup operation. Since the endoscope light source device is started normally, the signal corresponding to "OFF-ON" defaults to a low level and no level flip occurs.

[0130] Fig.13 This is a signal timing diagram of an endoscope light source device provided by an embodiment of the present application when the power is off for a long time or the power is turned off and then on manually. Fig.13In the case where the endoscope light source device is powered off for a long time or is manually powered off and then powered on, at the moment of power failure, the signals corresponding to "12V", "3.3V", "DET1" and "DET2" all drop rapidly from their respective high levels to low levels, and the low level 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 failure will cause the endoscope light source device to not 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 low level to a high level due to power failure, but since the endoscope light source device cannot work, the signal corresponding to "OFF-ON" remains at a high level for a very short time.

[0131] Fig.14 This is a signal timing diagram of an endoscope light source device provided by an embodiment of the present application when power is lost instantly and then quickly powered on again. Fig.14 In 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", "DET1" and "DET2" 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 due to the MCU's attempt to perform a restart operation, and since 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 since the endoscope light source device is still able to work, the signal corresponding to "OFF-ON" will remain at a high level, thereby triggering the MCU to read the stored first state information, and restore the previous light output state based on the first state information.

[0132] In summary, in the embodiment of the present application, the button on-off controller can generate a first enable signal to the MCU when the voltage of the power supply drops below the first voltage threshold and above the minimum critical voltage value. The MCU responds to the first enable signal, reads the stored first state information, and controls 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. That is, this solution can quickly restore the light-emitting state previously adjusted by the user operation when the power supply is instantly cut off, without the need for relevant personnel to manually adjust the device again.

[0133] 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.

[0134] 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.

[0135] 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.

[0136] 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.

[0137] 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 light emission control method.

[0138] 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.

[0139] 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.

[0140] 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 button on / off controller, a light-emitting circuit and a power supply; The MCU is electrically connected to the dimming component, the button on-off controller, the light-emitting circuit and the power supply respectively, and the button on-off controller, the dimming component 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 read the first status information when receiving a first enable signal, and output the first control signal to the light-emitting circuit based on the first status information again. The first enable signal is a signal generated by the button on-off controller when the voltage of the power supply drops below a first voltage threshold and above a minimum critical voltage value. The minimum critical voltage value is the lowest voltage value at which the endoscope light source device can operate.

2. The endoscope light source device according to claim 1, characterized in that: The power supply has a first power supply end and a second power supply end, the button on-off controller is electrically connected to the first power supply end, and the power supply provides a first power supply voltage to the button on-off controller through the first power supply end; The light-emitting circuit is electrically connected to the second power supply end, and the power supply provides a second power supply voltage to the light-emitting circuit through the second power supply end; The endoscope light source device also includes a first voltage-dividing circuit, one end of which is electrically connected to the second 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 button on-off controller has a button PB pin, and the PB pin is electrically connected between the first voltage-dividing resistor and the second voltage-dividing resistor.

3. The endoscope light source device according to claim 1, characterized in that: The MCU is also used for: When it is detected that the voltage of the power supply drops to a second voltage threshold, performing a restart operation, the second voltage threshold being less than the first voltage threshold; After the restart operation is performed, if the first enable signal is detected, the first state information is read again in response to the first enable signal, and the first control signal is output to the light emitting circuit again based on the first state information.

4. The endoscope light source device according to claim 3, characterized in that: The power supply has a third power supply end, the MCU is electrically connected to the third power supply end, and the power supply provides a third power supply voltage to the MCU through the third power supply end; The endoscope light source device further includes a second voltage-dividing circuit, one end of which is electrically connected to the third power supply end, and the other end is grounded; the second voltage-dividing circuit includes a third voltage-dividing resistor and a fourth voltage-dividing resistor connected in series, and the MCU has a first pin, and the first pin is electrically connected between the third voltage-dividing resistor and the fourth voltage-dividing resistor; The MCU is used to determine whether the voltage of the power supply drops below the second voltage threshold and above the minimum critical voltage value by detecting the voltage of the first pin.

5. The endoscope light source device according to claim 4, characterized in that: The first pin is an analog-to-digital conversion ADC pin.

6. The endoscope light source device according to any one of claims 1 to 5, characterized in that: The MCU has a second pin, the button on / off controller has an enable EN pin, and the second pin is electrically connected to the EN pin; The button on-off controller is used to output the first enable signal through the EN pin.

7. The endoscope light source device according to claim 6, characterized in that: The second pin is a general purpose input / output (GPIO) pin.

8. 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 1-7.

9. A light emission control method, characterized in that: The microcontroller unit MCU included in the endoscope light source device also includes a dimming component, a button on-off controller, 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; Receiving a first enable signal triggered by the button on-off controller when the voltage of the power supply drops below a first voltage threshold and above a minimum critical voltage value, wherein the minimum critical voltage value is a minimum voltage value at which the endoscope light source device can operate; In response to the first enable signal, 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 to control the light emitting circuit to continue to emit the light beam in the first state.

10. The method according to claim 9, characterized in that The method further comprises: When it is detected that the power supply voltage drops to a second voltage threshold, performing a restart operation, the second voltage threshold being less than the first voltage threshold; After performing the restart operation, if the first enable signal is detected, the first state information is read again in response to the first enable signal, and the first control signal is output to the light-emitting circuit again based on the first state information to control the light-emitting circuit to continue to emit the light beam in the first state.

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