A dual-camera endoscope switching circuit and device

Abstract

The present invention discloses a dual-camera endoscope switching circuit and the above-mentioned dual-camera endoscope switching device. A flexible circuit board is used to integrate the dual-camera endoscope switching circuit in the camera part; the spare GPIO of the main control DSP is used in combination with a triode / MOS tube to realize the switching function. This dual-camera endoscope switching method is relatively convenient and can be realized directly in the camera part. The dual-camera endoscope switching circuit is integrated in the camera part without an external control board, which saves space and simplifies the cumbersome wiring between the camera and the interface end; a flexible circuit board is used, and the bending resistance of the flexible board is utilized to fold the circuit to the maximum extent to reduce the space and make the product size small enough.

Description

Technical Field

[0001] The present invention relates to the field of professional industrial and medical endoscopes, and in particular to a dual-camera endoscope switching circuit and equipment thereof. Background Art

[0002] In the industrial and medical fields, endoscopes are needed for observations in narrow spaces to record the actual conditions observed, so as to conduct observation, prevention, and maintenance. The dual-camera endoscope can observe the front view and switch to observe the side view at the same time, which is more convenient and effective for users and provides a better experience. At present, the dual-camera switching principle on the market is generally to add an external control board or use a single-chip microcomputer to give instructions for switching, which results in cumbersome wiring between the camera and the control board, and the external control board takes up space and is inconvenient to use. Summary of the invention

[0003] The purpose of the present invention is to disclose a dual-camera endoscope switching circuit and equipment thereof, aiming to solve the problems in the prior art of complicated wiring between the camera and the control board, space occupation and inconvenience in use of the external control board.

[0004] The technical solution of the present invention is: a dual-camera endoscope switching circuit, characterized in that: it includes a resistor R1, a resistor R2, and an NPN transistor Q1, wherein the resistor R1 is arranged between the input node port GPIO0 and the base of the NPN transistor Q1, the resistor R2 is arranged between the power supply voltage VDD and the collector of the NPN transistor Q1, the input node port S_PWDN1 is connected to the collector of the NPN transistor Q1, and the emitter of the transistor Q1 is grounded;

[0005] The device comprises a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, an NPN transistor Q2, an NPN transistor Q3, an NPN transistor Q4, an LED diode D1, and an LED diode D2. The resistor R3 is arranged between the input node port GPIO1 and the base of the NPN transistor Q2. The resistor R5 is arranged between the collector of the NPN transistor Q2 and the base of the NPN transistor Q4. The collector of the transistor Q4 is connected to the cathode of the light-emitting diode LEDD2. The anode of the light-emitting diode LEDD2 is connected to the power supply LED2_VDD. The resistor R4 is arranged between the input node port GPIO1 and the base of the NPN transistor Q2. The collector of the NPN transistor Q2 is connected to the power supply voltage VDD, the emitter of the NPN transistor Q2 is grounded, the emitter of the NPN transistor Q4 is grounded, the resistor R7 is arranged between the base of the NPN transistor Q4 and the ground, the resistor R6 is arranged between the input node port GPIO1 and the base of the NPN transistor Q3, the collector of the transistor Q3 is connected to the cathode of the light-emitting diode LEDD1, the anode of the light-emitting diode LEDD1 is connected to the power supply LED1_VDD, the emitter of the transistor Q3 is grounded, and the resistor R8 is arranged between the base of the NPN transistor Q3 and the ground;

[0006] The input node port GPIO0 and the input node port GPIO1 are connected to two pins of the main control chip, and the input node port S_PWDN1 and the input node port S_PWDN2 are connected to two image sensors respectively.

[0007] As a further technical optimization of the present technical solution, in the dual-camera endoscope switching circuit described in the present invention, the models of the transistors Q1, Q2, Q3 and Q4 are all SS8050T.

[0008] The present invention also discloses a dual-camera endoscope switching device, comprising the dual-camera endoscope switching circuit mentioned above.

[0009] As a further technical optimization of the present technical solution, a dual-camera endoscope switching device described in the present invention also includes a housing, a camera part and a flexible circuit board, a flexible circuit board is arranged inside the camera part, and the camera part includes a main camera and a sub-camera.

[0010] As a further technical optimization of the present technical solution, the present invention describes a dual-camera endoscope switching device, wherein the main camera is a forward-pointing camera and the auxiliary camera is a side-pointing camera.

[0011] As a further technical optimization of the present technical solution, the dual-camera endoscope switching device described in the present invention, the camera part also includes a tempered glass protective layer.

[0012] Beneficial effects of the present invention: The present invention provides a dual-camera endoscope switching circuit and equipment thereof. This dual-camera endoscope switching method is relatively convenient and can be directly implemented in the camera part. The dual-camera endoscope switching circuit is integrated in the camera part without an external control board, which saves space and simplifies the cumbersome wiring between the camera and the interface end. By adopting a flexible circuit board and utilizing the bending resistance of the flexible board, the circuit can be folded to the maximum extent to reduce the space and make the product size small enough. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0014] Figure 1 It is a partial structural schematic diagram of a dual-camera endoscope switching circuit in an embodiment of the present invention;

[0015] Figure 2 It is a partial structural schematic diagram of a dual-camera endoscope switching circuit in an embodiment of the present invention;

[0016] Figure 3 is a front view of a dual-camera endoscope switching device according to an embodiment of the present invention;

[0017] Figure 4 is a side view of a dual-camera endoscope switching device in an embodiment of the present invention;

[0018] Figure 5 is a top view of a dual-camera endoscope switching device in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 2 The present invention provides an embodiment: a dual-camera endoscope switching circuit, characterized in that: it includes a resistor R1, a resistor R2, and an NPN transistor Q1, wherein the resistor R1 is arranged between the input node port GPIO0 and the base of the NPN transistor Q1, the resistor R2 is arranged between the power supply voltage VDD and the collector of the NPN transistor Q1, the input node port S_PWDN1 is connected to the collector of the NPN transistor Q1, and the emitter of the transistor Q1 is grounded;

[0021] The device comprises a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, an NPN transistor Q2, an NPN transistor Q3, an NPN transistor Q4, an LED diode D1, and an LED diode D2. The resistor R3 is arranged between the input node port GPIO1 and the base of the NPN transistor Q2. The resistor R5 is arranged between the collector of the NPN transistor Q2 and the base of the NPN transistor Q4. The collector of the transistor Q4 is connected to the cathode of the light-emitting diode LEDD2. The anode of the light-emitting diode LEDD2 is connected to the power supply LED2_VDD. The resistor R4 is arranged between the input node port GPIO1 and the base of the NPN transistor Q2. The collector of the NPN transistor Q2 is connected to the power supply voltage VDD, the emitter of the NPN transistor Q2 is grounded, the emitter of the NPN transistor Q4 is grounded, the resistor R7 is arranged between the base of the NPN transistor Q4 and the ground, the resistor R6 is arranged between the input node port GPIO1 and the base of the NPN transistor Q3, the collector of the transistor Q3 is connected to the cathode of the light-emitting diode LEDD1, the anode of the light-emitting diode LEDD1 is connected to the power supply LED1_VDD, the emitter of the transistor Q3 is grounded, and the resistor R8 is arranged between the base of the NPN transistor Q3 and the ground;

[0022] The input node port GPIO0 and the input node port GPIO1 are connected to two pins of the main control chip, and the input node port S_PWDN1 and the input node port S_PWDN2 are connected to two image sensors respectively.

[0023] The models of the transistors Q1 , Q2 , Q3 and Q4 are all SS8050T.

[0024] See also Figure 3-Figure 5 The present invention also discloses a dual-camera endoscope switching device, including the above-mentioned dual-camera endoscope switching circuit.

[0025] The dual-camera endoscope switching device further includes a housing 1 , a camera part 2 and a flexible circuit board. The camera part 2 is provided with a flexible circuit board inside. The camera part 2 includes a main camera 21 and a sub-camera 22 .

[0026] The dual-camera endoscope switching circuit is connected to the spare GPIO of the main control DSP. The main control DSP and the dual-camera endoscope switching circuit are integrated on the flexible circuit board. By utilizing the bending resistance of the flexible board, the circuit can be folded to the maximum extent to reduce the space.

[0027] The main camera 21 is a front-facing camera for observing the front; the auxiliary camera 22 is a side-facing camera for observing the side.

[0028] The camera part 2 also includes a tempered glass protective layer 23 , and the tempered glass protective layer 23 is used to protect the mirror surfaces of the main camera 21 and the auxiliary camera 22 .

[0029] The present invention provides a dual-camera endoscope switching circuit and a device thereof. The dual-camera endoscope switching method is relatively convenient and can be directly implemented in the camera part. The dual-camera endoscope switching circuit is integrated in the camera part without an external control board, which saves space and simplifies the cumbersome wiring between the camera and the interface end. A flexible circuit board is adopted, and the bending resistance of the flexible board is utilized, so that the circuit can be folded to the maximum extent to reduce the space and make the product size small enough.

[0030] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A dual-camera endoscope switching circuit, characterized in that: It includes a resistor R1, a resistor R2, and an NPN transistor Q1, wherein the resistor R1 is arranged between an input node port GPIO0 and a base of the NPN transistor Q1, the input node port GPIO0 is connected to an input node port S_PWDN2, the resistor R2 is arranged between a power supply voltage VDD and a collector of the NPN transistor Q1, the input node port S_PWDN1 is connected to the collector of the NPN transistor Q1, and the emitter of the transistor Q1 is grounded; The device comprises a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, an NPN transistor Q2, an NPN transistor Q3, an NPN transistor Q4, an LED diode D1, and an LED diode D2. The resistor R3 is arranged between the input node port GPIO1 and the base of the NPN transistor Q2. The resistor R5 is arranged between the collector of the NPN transistor Q2 and the base of the NPN transistor Q4. The collector of the transistor Q4 is connected to the cathode of the light-emitting diode LEDD2. The anode of the light-emitting diode LEDD2 is connected to the power supply LED2_VDD. The resistor R4 is arranged between the input node port GPIO1 and the base of the NPN transistor Q2. The collector of the NPN transistor Q2 is connected to the power supply voltage VDD, the emitter of the NPN transistor Q2 is grounded, the emitter of the NPN transistor Q4 is grounded, the resistor R7 is arranged between the base of the NPN transistor Q4 and the ground, the resistor R6 is arranged between the input node port GPIO1 and the base of the NPN transistor Q3, the collector of the transistor Q3 is connected to the cathode of the light-emitting diode LEDD1, the anode of the light-emitting diode LEDD1 is connected to the power supply LED1_VDD, the emitter of the transistor Q3 is grounded, and the resistor R8 is arranged between the base of the NPN transistor Q3 and the ground; The input node port GPIO0 and the input node port GPIO1 are connected to two pins of the main control chip, and the input node port S_PWDN1 and the input node port S_PWDN2 are connected to two image sensors respectively.

2. The dual-camera endoscope switching circuit according to claim 1, characterized in that: The models of the transistors Q1 , Q2 , Q3 and Q4 are all SS8050T.

3. A dual-camera endoscope switching device, characterized in that: A dual-camera endoscope switching circuit comprising any one of claims 1-2.

4. The dual-camera endoscope switching device according to claim 3, characterized in that: It also includes a housing (1), a camera part (2) and a flexible circuit board, wherein the flexible circuit board is arranged inside the camera part (2), and the camera part (2) includes a main camera (21) and a secondary camera (22).

5. The dual-camera endoscope switching device according to claim 4, characterized in that: The main camera (21) is a front-facing camera, and the auxiliary camera (22) is a side-facing camera.

6. A dual-camera endoscope switching device according to claim 4, characterized in that: The camera part (2) also includes a tempered glass protective layer (23).

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