CN210009001U

CN210009001U - Visible endoscope red and white light source switching control circuit

Info

Publication number: CN210009001U
Application number: CN201821776110.7U
Authority: CN
Inventors: 熊利泽; 周灵华; 袁洪文; 叶峰
Original assignee: ZHEJIANG UE MEDICAL CORP
Current assignee: Zhejiang Youyi Medical Equipment Co., Ltd
Priority date: 2018-10-31
Filing date: 2018-10-31
Publication date: 2020-02-04
Anticipated expiration: 2028-10-31

Abstract

The utility model discloses a visible endoscope red and white light source switching control circuit, which comprises a power supply, a signal switching control circuit, a power supply turnover control circuit and an illuminating component; after receiving the input signal, the signal switching control circuit sends a level switching command to the power supply overturning control circuit; the power supply overturning control circuit is provided with two power supply output driving interfaces, namely a power supply output driving interface LED _ P1 and a power supply output driving interface LED _ P2, and after receiving the level conversion command, the power supply overturning control circuit overturns the positive and negative polarities of the output power supply; the lighting assembly includes a light emitting diode LED1 and a light emitting diode LED2, one of the light emitting diode LED1 and the light emitting diode LED2 being a red light emitting diode and the other being a white light emitting diode. The control circuit is provided with the red light source and the white light source, can realize the switching control of the red light source and the white light source, combines the functional characteristics of the existing endoscope and the light bar, and well meets the use requirements.

Description

Visible endoscope red and white light source switching control circuit

Technical Field

The utility model relates to a red white light source switching control circuit of visual endoscope belongs to endoscope circuit structural design field.

Background

At present, endoscope equipment such as a visual hard tube lens, a visual soft lens and the like are popularized and used in many hospitals to assist trachea intubation, images of the inner wall of a trachea of a human body are shot through a camera at the front end of the endoscope tube, and the images are transmitted to an endoscope display end and displayed by a liquid crystal display screen. The camera is light and handy, it is slim, flexible, have nimble following nature, better insertional, it more can be close to the pathological change position to get into the laryngeal cavity, can both clearly be seen to the slight change of throat and trachea inside, it is faster and more accurate to diagnose, but not good directly perceived judgement to the degree of depth position that gets into human trachea, sometimes the intubate sees unclear image when meetting spittoon or blood, so the doctor can use this kind of hard tube that can send red light of optical wand to replace visual endoscope and be used for guiding orientation sometimes, because the penetrability of red light is strong, and the thorax is pressed close to trachea cannula position, ruddiness pierces through the thorax easily and goes out, but the shortcoming is that this kind of optical wand does not have visual function, can fix a position but can't see inside image, the result of use is general.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims at providing a combine reasonable visible endoscope red and white light source switching control circuit, set up red and white two illuminant in this control circuit, can realize having combined the functional characteristics of current endoscope and optical wand promptly to red and white illuminant switching control, satisfied the user demand.

Realize the utility model discloses the technical scheme of purpose is:

a visible endoscope red and white light source switching control circuit comprises a power supply, a signal switching control circuit, a power supply turnover control circuit and an illumination assembly; the signal switching control circuit, the power supply overturning control circuit and the lighting assembly are sequentially connected, and the power supply directly provides electric energy for the signal switching control circuit and the power supply overturning control circuit and indirectly provides electric energy for the lighting assembly; after receiving an input signal, the signal switching control circuit sends a level switching command to the power supply overturning control circuit; the power supply overturning control circuit is provided with two power supply output driving interfaces, namely a power supply output driving interface LED _ P1 and a power supply output driving interface LED _ P2, and after receiving the level conversion command, the power supply overturning control circuit overturns the positive and negative polarities of the output power supply; the lighting assembly comprises a light emitting diode LED1 and a light emitting diode LED2, one of the light emitting diode LED1 and the light emitting diode LED2 is a red light emitting diode, the other is a white light emitting diode, the anode of the light emitting diode LED1 is connected with the cathode of the light emitting diode LED2 and is connected with a power output driving interface LED _ P1, and the cathode of the light emitting diode LED1 is connected with the anode of the light emitting diode LED2 and is connected with a power output driving interface LED _ P2.

In the above technical solution, the signal switching control circuit includes a P-type triode Q1, pin 1 of the P-type triode Q1 is connected to pin 2 of the resistor R1 and pin 1 of the resistor R4, pin 2 of the P-type triode Q1 is connected to a VCC power supply, pin 3 of the P-type triode Q1 is connected to pin 1 of the resistor R8 and outputs a switch enable signal EN 1; a pin 1 of the resistor R1 is connected with a VCC power supply; a pin 3 of an N-type triode Q4 is connected with a pin 2 of a resistor R4, a pin 1 of a resistor R7 and an output switch enable signal EN2, a pin 1 of an N-type triode Q4 is connected with a pin 1 of a resistor R8, a pin 1 of a resistor R11, one end of a capacitor C2 and one end of a light touch key K1, and a pin 2 of an N-type triode Q4 is grounded; the pin 2 of the resistor R11, the other end of the capacitor C2 and the pin 1 of the capacitor C1 are grounded, and the pin 2 of the capacitor C1 is connected with the pin 2 of the resistor R7 and the other end of the light touch key K1.

In the above technical solution, the power supply rollover control circuit includes a P-type triode Q3 and a P-type triode Q2, a pin 2 of the P-type triode Q3 and a pin 2 of the P-type triode Q2 are both connected to a VCC power supply, a pin 1 of the P-type triode Q3 is connected to one end of a resistor R2, one end of a resistor R5 and one end of a capacitor C5, the other end of the resistor R5 is connected to a switch enable control signal EN1, and a pin 3 of the P-type triode Q3 is connected to one end of a resistor R9 and one end of a resistor R13; a pin 1 of a P-type triode Q2 is connected with one end of a resistor R3, one end of a resistor R6 and one end of a capacitor C6, the other end of the resistor R2 and the other end of a resistor R3 are connected with a VCC power supply, the other end of the resistor R6 is connected with a switch enable control signal EN2, a pin 3 of the P-type triode Q2 is connected with one end of a resistor R10 and one end of the resistor R12, and the other end of the capacitor C5 and the other end of the capacitor C6 are grounded; a pin 1 of the N-type triode Q5 is connected with the other end of the resistor R12, a pin 2 of the N-type triode Q5 is grounded, and a pin 3 of the N-type triode Q5 is connected with the other end of the resistor R9, one end of the capacitor C3, one end of the diode D1 and the power output driving interface LED _ P1; a pin 1 of the N-type triode Q6 is connected with the other end of the resistor R13, a pin 2 of the N-type triode Q6 is grounded, a pin 3 of the N-type triode Q6 is connected with the other end of the resistor R10, one end of the capacitor C4, one end of the diode D3 and the power output driving interface LED _ P2, and the other end of the diode D1, the other end of the diode D3, the other end of the capacitor C3 and the other end of the capacitor C4 are grounded.

The utility model discloses has positive effect: by adopting the scheme of the utility model, the front end of the endoscope tube of the endoscope is provided with the red and white LED light sources (the red LED lamp and the white LED lamp) and alternately emits light through the red and white light source switching control circuit, namely the utility model combines the characteristics of the visible endoscope and the light bar, combines the advantages of the visible endoscope and the light bar, combines the design of combining the visible endoscope and the light bar, mainly adds the function of the light bar on the basis of taking the visible endoscope as the main body, basically does not change the structure of the original visible endoscope, under the condition that the internal structure space is compact and the conductor wire for connection is limited, the utility model discloses the red and white light source switching control circuit, so that the light sources of two types of instruments can be integrated into one, the red or white LED can be selectively controlled to emit light according to needs in the actual use process, and the control circuit has no control chip, and does not need to write codes, and the control panel can be very small, the problem of installation space compactness is solved.

Drawings

Fig. 1 is a block diagram of the present invention;

fig. 2 is a circuit diagram of the signal switching control circuit of the present invention;

fig. 3 is a circuit diagram of a power supply turnover control circuit according to the present invention;

fig. 4 is a circuit diagram of the power module of the present invention.

Detailed Description

The following description is made by combining the drawings of the specification to describe the specific structure of the red and white light source switching control circuit of the visible endoscope of the present invention:

a visible endoscope red and white light source switching control circuit is shown in figures 1 and 4 and comprises a power supply 1, a signal switching control circuit 2, a power supply overturning control circuit 3 and an illumination assembly 4; the signal switching control circuit 2, the power supply overturning control circuit 3 and the lighting assembly 4 are sequentially connected, and the power supply 1 directly provides electric energy for the signal switching control circuit 2 and the power supply overturning control circuit 3 and indirectly provides electric energy for the lighting assembly 4; after receiving the input signal, the signal switching control circuit 2 sends a level switching command to the power supply overturning control circuit 3; the power supply overturning control circuit 3 is provided with two power supply output driving interfaces, namely a power supply output driving interface LED _ P1 and a power supply output driving interface LED _ P2, and after receiving the level conversion command, the power supply overturning control circuit 3 overturns the positive polarity and the negative polarity of the power supply output by the two power supply output driving interfaces; the lighting assembly 4 comprises a light emitting diode LED1 and a light emitting diode LED2, one of the light emitting diode LED1 and the light emitting diode LED2 is a red light emitting diode, the other is a white light emitting diode, the anode of the light emitting diode LED1 is connected with the cathode of the light emitting diode LED2 and is connected with a power output driving interface LED _ P1, and the cathode of the light emitting diode LED1 is connected with the anode of the light emitting diode LED2 and is connected with a power output driving interface LED _ P2. By adopting the scheme of the utility model, the two red and white LED light sources (the red LED lamp and the white LED lamp) are arranged at the front end of the lens tube, and the red and white light source switching control circuit alternately emits light, namely the utility model combines the characteristics of the visual endoscope and the light bar, combines the advantages of the visual endoscope and the light bar, combines the design of combining the two into one, mainly adds the function of the light bar on the basis of the visual endoscope as the main body, basically does not change the structure of the original visual endoscope, under the condition that the internal structure space is compact and the conductor wire for connection is limited, the utility model discloses the red and white light source switching control circuit, so that the light sources of two types of instruments can be integrated into one, the red or white LED can be selectively controlled to emit light according to needs in the actual use process, and the control circuit has no control chip, and does not need to write codes, and the control panel can be very small, the problem of installation space compactness is solved.

Further, referring to fig. 2, the signal switching control circuit 2 includes a P-type transistor Q1, pin 1 of the P-type transistor Q1 is connected to pin 2 of the resistor R1 and pin 1 of the resistor R4, pin 2 of the P-type transistor Q1 is connected to a VCC power supply, pin 3 of the P-type transistor Q1 is connected to pin 1 of the resistor R8 and outputs a switch enable signal EN 1; a pin 1 of the resistor R1 is connected with a VCC power supply; a pin 3 of an N-type triode Q4 is connected with a pin 2 of a resistor R4, a pin 1 of a resistor R7 and an output switch enable signal EN2, a pin 1 of an N-type triode Q4 is connected with a pin 1 of a resistor R8, a pin 1 of a resistor R11, one end of a capacitor C2 and one end of a light touch key K1, and a pin 2 of an N-type triode Q4 is grounded; the pin 2 of the resistor R11, the other end of the capacitor C2 and the pin 1 of the capacitor C1 are grounded, and the pin 2 of the capacitor C1 is connected with the pin 2 of the resistor R7 and the other end of the light touch key K1.

Still further, referring to fig. 3, the power source flipping control circuit 3 in this embodiment includes a P-type transistor Q3 and a P-type transistor Q2, where a pin 2 of the P-type transistor Q3 and a pin 2 of the P-type transistor Q2 are both connected to the VCC power source, a pin 1 of the P-type transistor Q3 is connected to one end of a resistor R2, one end of a resistor R5, and one end of a capacitor C5, the other end of the resistor R5 is connected to a switch enable control signal EN1, and a pin 3 of the P-type transistor Q3 is connected to one end of a resistor R9 and one end of a resistor R13; a pin 1 of a P-type triode Q2 is connected with one end of a resistor R3, one end of a resistor R6 and one end of a capacitor C6, the other end of the resistor R2 and the other end of a resistor R3 are connected with a VCC power supply, the other end of the resistor R6 is connected with a switch enable control signal EN2, a pin 3 of the P-type triode Q2 is connected with one end of a resistor R10 and one end of the resistor R12, and the other end of the capacitor C5 and the other end of the capacitor C6 are grounded; a pin 1 of the N-type triode Q5 is connected with the other end of the resistor R12, a pin 2 of the N-type triode Q5 is grounded, and a pin 3 of the N-type triode Q5 is connected with the other end of the resistor R9, one end of the capacitor C3, one end of the diode D1 and the power output driving interface LED _ P1; a pin 1 of the N-type triode Q6 is connected with the other end of the resistor R13, a pin 2 of the N-type triode Q6 is grounded, a pin 3 of the N-type triode Q6 is connected with the other end of the resistor R10, one end of the capacitor C4, one end of the diode D3 and the power output driving interface LED _ P2, and the other end of the diode D1, the other end of the diode D3, the other end of the capacitor C3 and the other end of the capacitor C4 are grounded. The signal switching control circuit comprises a P-type triode Q1, wherein a pin 1 of a P-type triode Q1 is connected with a resistor R1 and a resistor R4, a pin 2 of the triode Q1 is connected with a VCC power supply, and a pin 3 of a triode Q1 is connected with a resistor R8 and an output switch enabling signal EN 1; a pin 1 of the resistor R1 is connected with a VCC power supply; a pin 3 of an N-type triode Q4 is connected with a resistor R4, a resistor R7 and an output switch enable signal EN2, a pin 1 of the N-type triode Q4 is connected with a resistor R8, a resistor R11, a capacitor C2 and a light touch key K1, and a pin 2 of an N-type triode Q4 is grounded; one pin of the resistor R11, the capacitor C2 and the capacitor C1 is grounded, and the other pin of the capacitor C1 is respectively connected with the resistor R7 and the light touch key K1.

The working principle of the red and white light source control circuit in this embodiment is as follows (taking the LED1 as a red LED and the LED2 as a white LED as an example for explanation):

when the VCC power supply is electrified, the base electrode of the P-type triode Q1 is at high level, and the P-type triode Q1 is cut off; the collector of the P-type triode Q1 is pulled down to ground through the resistor R8 and the resistor R11, so that sufficient voltage difference exists between VCC and EN1, and the P-type triode Q3 is turned on; capacitor C1 begins to charge until fully charged; the resistor R2 and the resistor R5 are configured, and the resistance ratio of the resistor R8 to the resistor R11 is configured, so that the base electrode of the N-type triode Q4 is maintained below 0.6V, the N-type triode Q4 is cut off, the EN2 is high level, and the P-type triode Q2 is cut off; the P-type triode Q3 is conducted, so that the base electrode of the N-type triode forms current, and the N-type triode Q6 is conducted; because the P-type triode Q2 is cut off, the N-type triode Q6 is conducted, so that the base electrode of the N-type triode Q5 is pulled to the ground, and the N-type triode Q5 is cut off; at this time, a loop is formed from a VCC power supply through an EC electrode of the P-type triode Q3, the resistor R9, the conducting wire LED _ P1 to the LED2, the return through the conducting wire LED _ P2 to the N-type triode Q6, and the ground, at this time, the light emitting diode LED2 is turned on, and the light emitting diode LED1 is turned off. Therefore, when the device is turned on, the LED2 is turned on, and the LED1 is turned off.

When the light touch key K1 is pressed, the capacitor C1 discharges the N-type triode Q4, the N-type triode Q4 is conducted, the voltage of the base electrode of the P-type triode Q1 is reduced after the N-type triode Q4 is conducted, the P-type triode Q1 is also conducted, and after the P-type triode Q1 is conducted, the level of the EN1 is approximately equal to the VCC power voltage, so the P-type triode Q3 is cut off; after the N-type triode Q4 is conducted, the EN2 level is pulled down to the ground, so that the P-type triode Q2 is conducted; after the P-type triode Q2Q2 is turned on and the Q3 is turned off, the corresponding Q5 is turned on, the Q6 is turned off, and the loop of the circuit is from the VCC power supply to the LED _ P2 through the Q2 and the R10, to the ground after passing through the LED1 and returning to the LED _ P1 to the Q5, so that a loop opposite to the loop before the light touch key K1 is pressed is formed. At this time, the light emitting diode LED1 is turned on, the light emitting diode LED2 is turned off, so the light emitting diode LED1 is in an on state, and the light emitting diode LED2 is in an off state, so that after the button is pressed down once from the power-on, the light emitting light source of the visual endoscope is switched from white to red, and the visual device enters a visual system light bar mode from a simple visual system. In addition, in the circuit alternation process, because the time that the VCC power supply charges the capacitor C5 through Q3 is faster than the time that C6 passes through R6 and then discharges through Q5, the turn-off of Q3 is faster than the turn-on of Q2, thereby preventing the phenomenon that Q3 is turned on when Q2 is not turned off in the H-bridge circuit composed of Q2, Q3, Q5 and Q6 at the moment of the positive and negative alternation process, so that the phenomenon that the H-bridge circuit burns out the triode due to unilateral short circuit is generated. Of course, the resistor R9 and the resistor R10 here play a role in limiting the LED current, and also have a certain current limiting effect on the single-side conduction of the H-bridge circuit.

When the light touch key K1 is pressed again, the C1 discharges electricity, the electricity is 0, and the level is equal to the ground, so that the Q4 is cut off; the ratio of the resistors R1, R4 and R7 is proportioned, so that the base electrode of the P-type triode Q1 is approximately equal to VCC power supply voltage, and the Q1 is cut off; the EN1 level is pulled low, and the EN2 level is pulled high; the C5 at the base of the P-transistor Q3 discharges slowly as does the C6 at the base of the P-transistor Q2, so the switch turns off quickly as it turns on and the circuit reenters the same mode as when it was first powered on. So far, a loop is formed from a VCC power supply through an EC pole of Q3, R9, a conducting wire LED _ P1, a light emitting diode LED2, a conducting wire LED _ P2, Q6 and the ground, at this time, the light emitting diode LED2 is turned on, and the LED1 is turned off. Therefore, when the device is turned on, the LED2 is turned on, and the LED1 is turned off. The whole circuit switches the primary light source by pressing the primary light touch key K1, completes the circulation of the primary light source by pressing the secondary light touch key K1, and so on, and realizes the whole design purpose.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious changes and modifications which fall within the spirit of the invention are deemed to be covered by the present invention.

Claims

1. A visible endoscope red and white light source switching control circuit is characterized by comprising a power supply (1), a signal switching control circuit (2), a power supply overturning control circuit (3) and an illumination assembly (4); the signal switching control circuit (2), the power supply overturning control circuit (3) and the lighting assembly (4) are sequentially connected, and the power supply (1) directly provides electric energy for the signal switching control circuit (2) and the power supply overturning control circuit (3) and indirectly provides electric energy for the lighting assembly (4); after receiving an input signal, the signal switching control circuit (2) sends a level conversion command to the power supply overturning control circuit (3); the power supply overturning control circuit (3) is provided with two power supply output driving interfaces, namely a power supply output driving interface LED _ P1 and a power supply output driving interface LED _ P2, and after receiving the level conversion command, the power supply overturning control circuit (3) overturns the positive polarity and the negative polarity of the power supply output by the two power supply output driving interfaces; the lighting assembly (4) comprises a light emitting diode LED1 and a light emitting diode LED2, one of the light emitting diode LED1 and the light emitting diode LED2 is a red light emitting diode, the other one of the light emitting diode LED2 is a white light emitting diode, the anode of the light emitting diode LED1 is connected with the cathode of the light emitting diode LED2 and is connected with a power output driving interface LED _ P1, and the cathode of the light emitting diode LED1 is connected with the anode of the light emitting diode LED2 and is connected with a power output driving interface LED _ P2.

2. The visible endoscope red and white light source switching control circuit as claimed in claim 1, wherein the signal switching control circuit (2) comprises a P-type triode Q1, a pin 1 of a P-type triode Q1 is connected with a pin 2 of a resistor R1 and a pin 1 of a resistor R4, a pin 2 of the P-type triode Q1 is connected with a VCC power supply, a pin 3 of a P-type triode Q1 is connected with a pin 1 of a resistor R8 and outputs a switch enable signal EN 1; a pin 1 of the resistor R1 is connected with a VCC power supply; a pin 3 of an N-type triode Q4 is connected with a pin 2 of a resistor R4, a pin 1 of a resistor R7 and an output switch enable signal EN2, a pin 1 of an N-type triode Q4 is connected with a pin 1 of a resistor R8, a pin 1 of a resistor R11, one end of a capacitor C2 and one end of a light touch key K1, and a pin 2 of an N-type triode Q4 is grounded; the pin 2 of the resistor R11, the other end of the capacitor C2 and the pin 1 of the capacitor C1 are grounded, and the pin 2 of the capacitor C1 is connected with the pin 2 of the resistor R7 and the other end of the light touch key K1.

3. The visible endoscope red and white light source switching control circuit as claimed in claim 2, wherein the power source turnover control circuit (3) comprises a P-type transistor Q3 and a P-type transistor Q2, wherein a pin 2 of the P-type transistor Q3 and a pin 2 of the P-type transistor Q2 are both connected to the VCC power source, a pin 1 of the P-type transistor Q3 is connected to one end of a resistor R2, one end of a resistor R5 and one end of a capacitor C5, the other end of the resistor R5 is connected to a switch enable control signal EN1, and a pin 3 of the P-type transistor Q3 is connected to one end of a resistor R9 and one end of a resistor R13; a pin 1 of a P-type triode Q2 is connected with one end of a resistor R3, one end of a resistor R6 and one end of a capacitor C6, the other end of the resistor R2 and the other end of a resistor R3 are connected with a VCC power supply, the other end of the resistor R6 is connected with a switch enable control signal EN2, a pin 3 of the P-type triode Q2 is connected with one end of a resistor R10 and one end of the resistor R12, and the other end of the capacitor C5 and the other end of the capacitor C6 are grounded; a pin 1 of the N-type triode Q5 is connected with the other end of the resistor R12, a pin 2 of the N-type triode Q5 is grounded, and a pin 3 of the N-type triode Q5 is connected with the other end of the resistor R9, one end of the capacitor C3, one end of the diode D1 and the power output driving interface LED _ P1; a pin 1 of the N-type triode Q6 is connected with the other end of the resistor R13, a pin 2 of the N-type triode Q6 is grounded, a pin 3 of the N-type triode Q6 is connected with the other end of the resistor R10, one end of the capacitor C4, one end of the diode D3 and the power output driving interface LED _ P2, and the other end of the diode D1, the other end of the diode D3, the other end of the capacitor C3 and the other end of the capacitor C4 are grounded.