CN109247905B - Method for judging whether light guide part is pulled out from host machine by endoscope system and endoscope system - Google Patents
Method for judging whether light guide part is pulled out from host machine by endoscope system and endoscope system Download PDFInfo
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Abstract
The utility model discloses an endoscope system and a method for judging whether a light guide part is pulled out of a host, the system comprises a mirror body and the host, wherein a first optical signal transmitting unit is arranged in the mirror body, and the input end of the first optical signal transmitting unit is connected with the video output end of an image sensor in the mirror body; the host computer includes first light signal receiving element and controller, and the controller judges the connected state of leading the optical part and host computer in the mirror body through detecting whether the output signal of first light signal receiving element is unusual, and the detection result output of controller is connected with light source switch end and/or air pump switch end in the host computer. According to the system and the method, the induction module does not need to be arranged in the space near the light outlet of the host, the influence of high temperature near the light outlet is avoided, the light source and/or the air pump can be automatically cut off after the light guide part is disconnected from the host, the damage to human eyes is avoided, the service lives of the light source and the air pump are prolonged, the service life of the whole machine is prolonged, and the reliability and the safety are high.
Description
Technical Field
The utility model relates to the field of medical equipment, in particular to a method for judging whether a light guide part is pulled out of a host machine by an endoscope system and the endoscope system.
Background
An endoscope apparatus is widely used in the medical field, and has a structure including an elongated access portion, and is configured to observe the digestive tract, organs, and the like of a human body by inserting the access portion into the body, or to carry a surgical instrument into the body through a forceps channel to perform an operation. One end of an access part (namely a mirror body) of the endoscope device is inserted into a human body, and the other end of the access part is provided with a light guide part, an air supply pipeline and an image signal wire harness, wherein the light guide part and the air supply pipeline are respectively connected with a light outlet hole and/or an air outlet of a cold light source of a host machine, the image signal wire harness transmits image signals to an image processing device of the host machine, and the image processing device processes image information and outputs a processing result to a display. When the electronic endoscope is finished or replaced, the operator needs to remove the light guide portion, the air supply duct, and the image signal wire harness.
In order to avoid injury to the eyes due to insertion and removal of the endoscope body (mainly the light guide portion in the endoscope body) in the light-on state, a light shielding plate is generally disposed on the light-emitting path of the light source device, and is opened when the endoscope body is inserted and closed when the endoscope body is removed. Such a light shielding structure usually further includes an elastic member to automatically return to an original light shielding position when pulled out, and since the elastic force of the elastic member is reduced after a plurality of uses, the light shielding plate may not be returned to the original light shielding position, thereby failing to effectively shield light.
In view of the above disadvantages, chinese patent publication No. CN205979370U in the prior art discloses a technical solution for detecting whether a lens body is removed by adding a sensing module near a light outlet of a cold light source, and turning off the light source when the lens body is detected to be removed. Although the mode is more reliable than that of adding a light blocking sheet on the light path, the space near the light outlet of the case of the cold light source is small, the arrangement of the induction module is difficult, meanwhile, the temperature of the light guide part of the mirror body is increased when the light source irradiates the light guide part of the mirror body after passing through the collimating optical system, the highest temperature can be more than 100 ℃, and devices around the light guide part of the mirror body are easy to age and damage due to the high temperature. Therefore, the addition of the sensing module near the light outlet of the cold light source cabinet is structurally difficult to realize and risks being damaged by high temperature.
Although the connection state of the endoscope body and the host can be detected by the level change of at least one insertion pin or insertion hole on the endoscope body connector and/or the host connector, the technical scheme relies on the signals of the endoscope body and the host to be transmitted through wires, and with the continuous popularization of high-definition shooting, because high-definition image signals have higher requirements on the transmission rate of transmission cables, the current image signal wiring harness is gradually replaced by the technical scheme of transmitting endoscope image signals through optical signals, for example, the technical scheme disclosed in the chinese patent with publication number CN107508636A, which is an optical communication system, an endoscope system and an optical communication method for an endoscope system, so as to meet the higher transmission rate requirement. Meanwhile, the temperature around the light guide part of the lens body is higher, so that the reliability and safety of wired connection are reduced, and therefore, when the light guide part is pulled out during wireless transmission of communication signals between the lens body and the host, how to quickly and automatically turn off the light source is realized, human eyes are prevented from being injured, the service life of the light source is prolonged, and the service life of the air pump is prolonged by automatically turning off the air pump.
Disclosure of Invention
The utility model aims to at least solve the technical problems in the prior art, and particularly provides a method for judging whether a light guide part is pulled out of a host by an endoscope system and the endoscope system.
In order to achieve the above object, according to a first aspect of the present invention, there is provided an endoscope system comprising a scope and a main body, wherein a first optical signal transmitting unit is provided in the scope, and an input end of the first optical signal transmitting unit is connected with a video output end of an image sensor in the scope;
the host comprises a first optical signal receiving unit and a controller, the controller judges the connection state of the light guide part in the mirror body and the host by detecting whether the output signal of the first optical signal receiving unit is abnormal, and the detection result output end of the controller is connected with the light source switch end and/or the air pump switch end in the host.
The beneficial effects of the above technical scheme are: when the light guide part of the mirror body is disconnected with the host, the video signal output by the image sensor can be changed correspondingly, such as the whole pixel value is reduced suddenly, no frame signal or row signal exists, the change can be accurately transmitted to the controller through the first light signal transmitting unit and the first light signal receiving unit controller, the controller judges the connection state of the light guide part of the mirror body and the host by detecting the abnormal changes, the system does not need to arrange an induction module in the space near the light outlet of the host, and is not influenced by the high temperature near the light outlet.
In a preferred embodiment of the present invention, the connection end of the mirror body and the host comprises all or part of the following parts independently connected with the host: light guide part connecting end, output end of first light signal transmitting unit and gas connecting end.
The beneficial effects of the above technical scheme are: the system detects and judges the connection state of the light guide part and the host, is not influenced by whether the light guide part connecting end, the output end of the first light signal transmitting unit and the gas connecting end are independently connected with the host or not, and is extremely suitable for the situation that an image processing device and a cold light source in the host are separately arranged.
In a preferred embodiment of the present invention, the connection end of the mirror body and the host includes a light guide connection end, an output end of the first optical signal transmitting unit, an input end of the second optical signal receiving unit, and a gas connection end, which are connected to the host through the same structure.
The beneficial effects of the above technical scheme are: the method is suitable for the situation that the image processing device and the cold light source in the host are integrally arranged.
In a preferred embodiment of the present invention, a wireless charging transmitting coil is disposed in the main body, and a wireless charging receiving coil coupled to the main body is disposed in the mirror body.
The beneficial effects of the above technical scheme are: realize wireless charging, improved the power supply security.
In a preferred embodiment of the present invention, a second optical signal transmitting unit is disposed in the host, a second optical signal receiving unit is disposed in the mirror, an input end of the second optical signal transmitting unit is connected to a video control end of the controller, and an output end of the second optical signal receiving unit is connected to a control signal input end of the image sensor.
The beneficial effects of the above technical scheme are: the control signal of the host computer to the image sensor is also transmitted wirelessly, so that the one-key plugging of the endoscope body and the endoscope body cleaning can be realized without using a shielding cap to protect an electric connector interface.
In a preferred embodiment of the present invention, the transmission medium of the first optical signal transmitting unit and the first optical signal receiving unit is visible light;
the first optical signal transmitting unit comprises a signal serialization module, a laser transmitting module and a laser diode, wherein the input end of the signal serialization module is connected with the video output end of the image sensor, the output end of the signal serialization module is connected with the input end of the laser transmitting module, and the output end of the laser transmitting module is connected with the power supply end of the laser diode;
the first optical signal receiving unit comprises a first photodiode, a signal processing module and a signal anti-serialization module, wherein the output end of the first photodiode is connected with the input end of the signal processing module, the output end of the signal processing module is connected with the input end of the signal anti-serialization module, and the output end of the signal anti-serialization module is connected with the signal input end of the controller.
The beneficial effects of the above technical scheme are: the high transmission rate can be achieved, and the requirement of people on high-definition videos is met. The first optical signal transmitting unit and the first optical signal receiving unit have high degree of modularization of hardware structures, and the reliability of the system is improved.
In a preferred embodiment of the present invention, the transmission medium of the second optical signal transmitting unit and the second optical signal receiving unit is infrared light;
the second optical signal transmitting unit comprises a tenth resistor, a seventh resistor, a first triode and an infrared light emitting diode, a video control end of the controller is respectively connected with a first end of the tenth resistor and a base electrode of the first triode, a second end of the tenth resistor is connected with the ground, a collector electrode of the first triode is connected with a first end of the seventh resistor, a second end of the seventh resistor is connected with a power supply end, an emitter electrode of the first triode is connected with an anode of the infrared light emitting diode, and a cathode of the infrared light emitting diode is connected with the ground;
the second optical signal receiving unit comprises a second photodiode, an eighth resistor, a ninth resistor and a second triode, wherein the cathode of the second photodiode is connected with the ground, the anode of the second photodiode is respectively connected with the first end of the eighth resistor and the base electrode of the second triode, the emitter electrode of the second triode is connected with the ground, the collector electrode of the second triode is respectively connected with the first end of the ninth resistor and the control signal input end of the image sensor, and the second end of the eighth resistor and the second end of the ninth resistor are both connected with the power supply end.
The beneficial effects of the above technical scheme are: the circuit structure is simple and reliable, and has low cost.
In order to achieve the above object, according to a second aspect of the present invention, there is provided a method for determining whether a light guide portion is removed from a host, the method including:
s1, the controller receives the output signal of the first optical signal receiving unit and carries out reduction processing to obtain original image data;
s2, the controller determines the connection status of the light guide portion and the host by detecting whether the key parameter of the original image data is abnormal;
and S3, controlling the working state of the light source and/or the air pump in the host machine by the controller according to the connection state of the light guide part and the host machine.
The beneficial effects of the above technical scheme are: the controller detects the abnormal change of the original image data to quickly judge the connection state of the light guide part of the lens body and the host, so that the light source and/or the air pump are automatically cut off, the damage to human eyes is avoided, the service lives of the light source and the air pump are prolonged, the service life of the whole machine is prolonged, and the method is simple and easy to implement.
In a preferred embodiment of the present invention, the key parameter is an average pixel value of the original image data, and the S2 includes:
calculating an average pixel value in the original image data, if the average pixel value is less than or equal to a pixel threshold value, considering that the light guide part is disconnected with the host, sending a corresponding control signal to a light source switch end and/or an air pump switch end, and stopping working of the light source and/or the air pump; if the average pixel value is larger than the pixel threshold value, the light guide part and the host are not disconnected.
The beneficial effects of the above technical scheme are: the connection state of the light guide part and the host is judged by calculating the average pixel value, the limitation of whether the light guide part and the output end of the first optical signal emitting unit are independently connected with the host is avoided, particularly, when an image processing device and a cold light source in the host are separately arranged, the connection state of the light guide part and the host can be effectively detected through the change of the average pixel value, and the method is simple and easy to implement.
In a preferred embodiment of the present invention, the key parameter is a frame signal or a line signal of the original image data, and the step S2 includes:
s21, the controller judges whether the frame signal or the line signal can be extracted from the original image signal, if the frame signal or the line signal can be extracted, the first counter is cleared and starts to time, and the step returns to the step S1; if the frame signal or the line signal cannot be extracted, the process proceeds to step S22;
s22, determining whether the timing time of the first counter reaches t1, returning to step S1 if t1 is not reached, and considering that the light guide portion is disconnected from the host if t1 is reached;
the t1 is not less than the time when the first optical signal transmitting unit transmits one frame of image data.
The beneficial effects of the above technical scheme are: the frame signal or line signal of the original image data is provided to judge the connection state of the light guide part and the host, and the method is particularly suitable for quickly and effectively obtaining the detection result when an image processing device and a cold light source in the host are integrally arranged.
Drawings
FIG. 1 is a system block diagram of an endoscopic system in accordance with an embodiment of the present invention;
FIG. 2 is a diagram illustrating a connection structure between a mirror and a host according to an embodiment of the present invention;
fig. 3 is a hardware block diagram of a first optical signal transmitting unit and a first optical signal receiving unit in an embodiment of the present invention;
FIG. 4 is a schematic circuit diagram of a second optical signal transmitting unit and a second optical signal receiving unit according to an embodiment of the present invention;
fig. 5 is a flowchart of a method for determining whether the light guide portion is removed from the host according to an embodiment of the present invention.
Reference numerals:
1 connecting end of light guide part; 2, connecting a gas end; 3 a receiving coil; 4 an input terminal of a second optical signal receiving unit; 5 an output end of the first optical signal transmitting unit; 100 connecting structure.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
The utility model discloses an endoscope system, which comprises a scope body and a host, wherein a first optical signal transmitting unit is arranged in the scope body, and the input end of the first optical signal transmitting unit is connected with the video output end of an image sensor in the scope body; the host computer includes first light signal receiving element and controller, and the controller judges the connected state of leading the optical part and host computer in the mirror body through detecting whether the output signal of first light signal receiving element is unusual, and the detection result output of controller is connected with light source switch end and/or air pump switch end in the host computer.
In the present embodiment, the transmission light of the first optical signal transmitting unit and the first optical signal receiving unit is preferably, but not limited to, near infrared light, visible light, or the like, and preferably, the two units are connected by an optical fiber and propagate an optical signal. The longest distance from the head end of the electronic endoscope to the host can reach 3 meters, the MIPI interface is generally adopted for long-distance high-speed image signal transmission, the MIPI format conversion module is generally arranged on the image sensor, the video output end of the MIPI format video signal is directly output, the MIPI communication interface is composed of a pair of differential clocks and at least one pair of differential data, and wiring harnesses are the least in all the interfaces.
In this embodiment, the controller restores the data received from the first optical signal receiving unit to the original image data according to the MIPI protocol, searches for a frame signal or a line signal in the original image data, and when the frame signal or the line signal cannot be extracted within a certain time, it may be considered that the light guide part is disconnected from the host. The specific time is preferably not less than the time taken for the image sensor to transmit one frame of image data. The controller is preferably, but not limited to, an LPC1768 single chip microcomputer by NXP corporation. In this singlechip, can set up I/O pin P2.0 and P2.1 as the testing result output of two controllers respectively, represent the enabling port of light source and the enabling port of air pump respectively, two enabling ports are connected with the switch end of the relay switch control circuit in the power supply circuit of light source or air pump respectively, and relay switch control circuit is the switch control circuit that this technical field commonly used relay and triode constitute, and it is no longer repeated here.
In a preferred embodiment of the present invention, the connection end of the mirror body and the host comprises all or part of the following parts independently connected with the host: light guide part connecting end 1, output end 5 of first light signal transmitting unit and gas connecting end 2.
In the present embodiment, the host generally includes a cold light source (having an air pump integrated therein) and an image processing apparatus, and the cold light source may be provided separately from the image processing apparatus or may be provided integrally therewith. When the cold light source is separated from the image processing device, the light guide part connecting end 1 is separated from the output end 5 of the first optical signal transmitting unit. When the cold light source and the image processing device are integrally arranged, the light guide part connecting end 1, the output end 5 of the first light signal transmitting unit and the gas connecting end 2 can be independently connected with the host machine or connected with the host machine through the same carrier.
In a preferred embodiment of the present invention, as shown in fig. 2, the connection end of the mirror body and the host comprises a light guide connection end 1, an output end 5 of the first optical signal transmitting unit, an input end 4 of the second optical signal receiving unit, and a gas connection end 2, which are connected with the host through the same structure.
In the present embodiment, the same structure is a connection structure 100 on which the light guide connection terminal 1, the output terminal 5 of the first optical signal transmitting unit, the input terminal 4 of the second optical signal receiving unit, and the gas connection terminal 2 are all disposed, and the connection structure 100 may be as shown in fig. 2, which is a structural form of the mirror body and the host connection terminal.
In a preferred embodiment of the present invention, as shown in fig. 1, a wireless charging transmitting coil is disposed in the main body, and a wireless charging receiving coil 2 coupled thereto is disposed in the mirror body.
In this embodiment, the transmitting coil is preferably disposed on the surface of the main machine, and the receiving coil 2 is disposed on the surface of the connection end of the mirror body and the main machine, so that it can induce the alternating magnetic field generated by the transmitting coil. The circuit for exciting the transmitting coil and converting the inductive energy of the receiving coil 2 can refer to the circuit structure of the conventional wireless charging device in the prior art, and can be obtained by those skilled in the art, and will not be described herein again.
In a preferred embodiment of the present invention, as shown in fig. 1, a second optical signal transmitting unit is disposed in the host, a second optical signal receiving unit is disposed in the mirror, an input end of the second optical signal transmitting unit is connected to a video control end of the controller, and an output end of the second optical signal receiving unit is connected to a control signal input end of the image sensor.
In this embodiment, the optical signal transmitted from the light emitting end of the second optical signal transmitting unit is received by the light receiving end of the second optical receiving unit, and preferably, the two terminals are close to each other and propagate the optical signal through space or propagate the optical signal through an optical fiber between the two terminals. The host usually controls the image sensor to work through an I2C interface, and since control command data is less and the requirement for propagation speed is not high, the second optical signal transmitting unit and the second optical signal receiving unit can propagate the control signal through infrared light.
In a preferred embodiment of the present invention, as shown in fig. 3, the transmission medium of the first optical signal transmitting unit and the first optical signal receiving unit is visible light;
the first optical signal transmitting unit comprises a signal serialization module, a laser transmitting module and a laser diode D3, wherein the input end of the signal serialization module is connected with the video output end of the image sensor, the output end of the signal serialization module is connected with the input end of the laser transmitting module, and the output end of the laser transmitting module is connected with the power supply end of the laser diode D3;
the first optical signal receiving unit comprises a first photodiode D1, a signal processing module and a signal deserializing module, wherein the output end of the first photodiode D1 is connected with the input end of the signal processing module, the output end of the signal processing module is connected with the input end of the signal deserializing module, and the output end of the signal deserializing module is connected with the signal input end of the controller.
In this embodiment, the signal serialization module is used to convert the MIPI signal output by the image sensor into serial data according to a certain rule and output the serial data, the signal deserialization module is the inverse process of the previous process, the signal serialization module and the signal deserialization module are preferably implemented by a chip of SL83014 and its peripheral circuits, the chip can implement forward deserialization of signals and reverse deserialization of signals by configuration, and the specific circuit connection please refer to a chip manual. The laser emission module is preferably a module of model number SL82026T, and is used for driving the light emission intensity of the laser diode D3 according to the magnitude of the serial signal output by the signal serialization module. The laser diode D3 is preferably a fiber-optic connected laser diode and the first photodiode D1 is preferably fiber-optic connected. The wavelength ranges of the laser diode D3 and the first photodiode D1 should be matched. The signal processing module converts the electrical signal output by the first photodiode D1 into a signal capable of being received by the signal deserializing module, and preferably, the signal processing module selects the SL82016e module.
In a preferred embodiment of the present invention, the transmission medium of the second optical signal transmitting unit and the second optical signal receiving unit is infrared light;
as shown in fig. 4, the second optical signal transmitting unit includes a tenth resistor R10, a seventh resistor R7, a first transistor Q1 and an infrared light emitting diode D4, a video control terminal of the controller is respectively connected to a first terminal of the tenth resistor R10 and a base of the first transistor Q1, a second terminal of the tenth resistor R10 is connected to ground, a collector of the first transistor Q1 is connected to a first terminal of the seventh resistor R7, a second terminal of the seventh resistor R7 is connected to a power supply terminal, an emitter of the first transistor Q1 is connected to an anode of the infrared light emitting diode D4, and a cathode of the infrared light emitting diode D4 is connected to ground;
the second optical signal receiving unit comprises a second photodiode D2, an eighth resistor R8, a ninth resistor R9 and a second triode Q2, wherein the cathode of the second photodiode D2 is connected with ground, the anode of the second photodiode D2 is respectively connected with the first end of the eighth resistor R8 and the base of the second triode Q2, the emitter of the second triode Q2 is connected with ground, the collector of the second triode Q2 is respectively connected with the first end of the ninth resistor R9 and the control signal input end of the image sensor, and the second end of the eighth resistor R8 and the second end of the ninth resistor R9 are both connected with power supply terminals.
In this embodiment, the resistances of the tenth resistor R10, the seventh resistor R7, the eighth resistor R8, and the ninth resistor R9 are preferably 1K Ω, the first transistor Q1 is preferably MMBT2222A, the second transistor Q2 is preferably 2N3904, the external light emitting diode D4 is an LED0805, and the second photodiode D2 is an arsenic diode matching the wavelength range thereof.
The utility model also discloses a method for judging whether the light guide part is pulled out of the host, which comprises the following steps:
s1, the controller receives the output signal of the first optical signal receiving unit and carries out reduction processing to obtain original image data;
s2, the controller determines the connection status of the light guide portion and the host by detecting whether the key parameter of the original image data is abnormal;
and S3, controlling the working state of the light source and/or the air pump in the host machine by the controller according to the connection state of the light guide part and the host machine.
In this embodiment, the controller receives the output signal of the first optical signal receiving unit and performs the restoring process to restore the signal in the MIPI format output by the first optical signal receiving unit to the original image data output by the imaging unit of the image sensor, which is available for display, mainly according to the MIPI communication protocol. When the controller judges that the light guide part is disconnected with the host machine, the light source and/or the air pump are/is turned off, and when the controller judges that the light guide part is not disconnected with the host machine, the light source and/or the air pump are/is not turned off.
In a preferred embodiment of the present invention, the key parameter is an average pixel value of the original image data, and S2 includes:
calculating an average pixel value in the original image data, if the average pixel value is less than or equal to a pixel threshold value, considering that the light guide part is disconnected with the host, sending a corresponding control signal to a light source switch end and/or an air pump switch end, and stopping working of the light source and/or the air pump; if the average pixel value is larger than the pixel threshold value, the light guide part and the host are not disconnected.
In the application scenario of the embodiment, the cold light source and the image processing device are separately disposed, the light guide portion and the output end 5 of the first optical signal transmitting unit are connected with the light outlet of the cold light source and the input end of the first optical signal receiving unit of the image processing device in a one-to-one correspondence manner, at this time, after the light guide portion is pulled out, the image sensor takes a dark image due to no light, and the pixel value is very low, so the pixel average value of the original image is very low. The pixel threshold is greater than 0, and preferably, the pixel threshold may be set to a pixel value slightly greater than 0, such as any value between 10 and 60.
In a preferred embodiment of the present invention, the key parameter is a frame signal or a line signal of the original image data, and step S2 includes:
s21, the controller judges whether the frame signal or the line signal can be extracted from the original image signal, if the frame signal or the line signal can be extracted, the first counter is cleared and starts to time, and the step returns to the step S1; if the frame signal or the line signal cannot be extracted, the process proceeds to step S22;
s22, determining whether the time counted by the first counter reaches t1, if not reaching t1, returning to S1, and if reaching t1, determining that the light guide part is disconnected from the host;
t1 is not less than the time when the first optical signal transmitting unit transmits one frame of image data.
Fig. 5 is a flowchart illustrating an application scenario of the embodiment, in which after the host is turned on, the controller initializes the light source and the air pump and turns on the light source and the air pump; setting a frame signal in original image data as an interrupt signal of a controller, generating an interrupt after the controller extracts a first frame signal from the original image data, timing by the controller through a counter, if the frame signal is not extracted again before the timing reaches t1 to cause the interrupt, considering that the light guide part is disconnected from the host, turning off the light source and the air pump, and if the frame signal is extracted before the timing reaches t1 to cause the interrupt, considering that the light guide part is not disconnected from the host, and continuing to work the light source and the air pump.
In this embodiment, t1 is preferably 1/f, where f is the frame rate of image data transmitted from the image processor to the host, and when the host does not detect an image frame signal within time t1 that is greater than 1/f, it indicates that the image signal is interrupted, in this case, it indicates that the light guide portion is removed or the light guide portion suffers other physical damage and cannot be used normally, and the controller turns off the light source and the air pump.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A method for judging whether a light guide part is pulled out from a host machine in an endoscope system is characterized by comprising the following steps:
s1, the controller receives the output signal of the first optical signal receiving unit and carries out reduction processing to obtain original image data;
s2, the controller determines the connection status of the light guide portion and the host by detecting whether the key parameter of the original image data is abnormal; the key parameter is an average pixel value of the original image data, and the S2 includes:
calculating an average pixel value in the original image data, if the average pixel value is less than or equal to a pixel threshold value, considering that the light guide part is disconnected with the host, sending a corresponding control signal to a light source switch end and/or an air pump switch end, and stopping working of the light source and/or the air pump; if the average pixel value is larger than the pixel threshold value, the light guide part and the host are not disconnected;
and S3, controlling the working state of the light source and/or the air pump in the host machine by the controller according to the connection state of the light guide part and the host machine.
2. A method for judging whether a light guide part is pulled out from a host machine in an endoscope system is characterized by comprising the following steps:
s1, the controller receives the output signal of the first optical signal receiving unit and carries out reduction processing to obtain original image data;
s2, the controller determines the connection status of the light guide portion and the host by detecting whether the key parameter of the original image data is abnormal; the key parameter is a frame signal or a line signal of the original image data, and the step S2 includes:
s21, the controller judges whether the frame signal or the line signal can be extracted from the original image signal, if the frame signal or the line signal can be extracted, the first counter is cleared and starts to time, and the step returns to the step S1; if the frame signal or the line signal cannot be extracted, the process proceeds to step S22;
s22, determining whether the time counted by the first counter reaches t1, if not reaching t1, returning to S1, and if reaching t1, determining that the light guide part is disconnected from the host;
the t1 is not less than the time for the first optical signal transmitting unit to transmit one frame of image data;
and S3, controlling the working state of the light source and/or the air pump in the host machine by the controller according to the connection state of the light guide part and the host machine.
3. An endoscope system comprises a scope body and a host, and is characterized in that a first optical signal transmitting unit is arranged in the scope body, and the input end of the first optical signal transmitting unit is connected with the video output end of an image sensor in the scope body;
the host comprises a first optical signal receiving unit and a controller, the controller judges whether the light guide part is pulled out of the host by using the endoscope system of claim 1 or 2, the connection state of the light guide part in the endoscope body and the host is judged by detecting whether the output signal of the first optical signal receiving unit is abnormal, and the detection result output end of the controller is connected with a light source switch end and/or an air pump switch end in the host.
4. An endoscope system according to claim 3 and wherein said scope body to host attachment end comprises all or part of the following independently connected to the host: light guide part connecting end, output end of first light signal transmitting unit and gas connecting end.
5. An endoscope system according to claim 3 and wherein said coupling end of said scope body to said main body comprises a light guide portion coupling end, an output end of said first light signal transmitting unit, an input end of said second light signal receiving unit, and a gas coupling end all coupled to said main body by the same structure.
6. An endoscope system according to claim 3 and wherein a wirelessly chargeable transmit coil is disposed within said main body and a wirelessly chargeable receive coil is disposed within said scope body in coupling engagement therewith.
7. An endoscope system according to claim 3 and wherein a second optical signal transmitting unit is provided within said main body and a second optical signal receiving unit is provided within said scope body, said second optical signal transmitting unit having an input connected to a video control terminal of said controller and an output connected to a control signal input of said image sensor.
8. The endoscope system of claim 3 wherein the transmission medium of said first optical signal transmitting unit and said first optical signal receiving unit is visible light;
the first optical signal transmitting unit comprises a signal serialization module, a laser transmitting module and a laser diode, wherein the input end of the signal serialization module is connected with the video output end of the image sensor, the output end of the signal serialization module is connected with the input end of the laser transmitting module, and the output end of the laser transmitting module is connected with the power supply end of the laser diode;
the first optical signal receiving unit comprises a first photodiode, a signal processing module and a signal anti-serialization module, wherein the output end of the first photodiode is connected with the input end of the signal processing module, the output end of the signal processing module is connected with the input end of the signal anti-serialization module, and the output end of the signal anti-serialization module is connected with the signal input end of the controller.
9. The endoscope system of claim 7 wherein the transmission medium of said second optical signal transmitting unit and said second optical signal receiving unit is infrared light;
the second optical signal transmitting unit comprises a tenth resistor, a seventh resistor, a first triode and an infrared light emitting diode, a video control end of the controller is respectively connected with a first end of the tenth resistor and a base electrode of the first triode, a second end of the tenth resistor is connected with the ground, a collector electrode of the first triode is connected with a first end of the seventh resistor, a second end of the seventh resistor is connected with a power supply end, an emitter electrode of the first triode is connected with an anode of the infrared light emitting diode, and a cathode of the infrared light emitting diode is connected with the ground;
the second optical signal receiving unit comprises a second photodiode, an eighth resistor, a ninth resistor and a second triode, wherein the cathode of the second photodiode is connected with the ground, the anode of the second photodiode is respectively connected with the first end of the eighth resistor and the base of the second triode, the emitter of the second triode is connected with the ground, the collector of the second triode is respectively connected with the first end of the ninth resistor and the control signal input end of the image sensor, and the second end of the eighth resistor and the second end of the ninth resistor are both connected with the power supply end.
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| WO2021036233A1 (en) | 2019-08-23 | 2021-03-04 | 重庆金山科技（集团）有限公司 | Endoscope connection apparatus and endoscope system |
| CN112669949A (en) * | 2019-10-16 | 2021-04-16 | 深圳迈瑞生物医疗电子股份有限公司 | Endoscope light source host, alarm method, imaging system and storage medium |
| CN111568343A (en) * | 2020-06-15 | 2020-08-25 | 重庆金山科技（集团）有限公司 | A host, the connection structure of the host and the light guide part and the control method |
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