CN110974136A

CN110974136A - On-site detection device, cold light source and endoscope

Info

Publication number: CN110974136A
Application number: CN202010006406.6A
Authority: CN
Inventors: 陈舒婷
Original assignee: Shenzhen Shuwei Technology Co Ltd
Current assignee: Shenzhen Shuwei Technology Co Ltd
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2020-04-10

Abstract

The invention relates to an in-place detection device, a cold light source and an endoscope, wherein the in-place detection device comprises a first coil, a second coil and a detection unit, the first coil and the second coil are both connected with the detection unit, and the initial inductance of the first coil is greater than that of the second coil; when the electric conductor moves in the sensing area of the in-place detection device, so that the inductance of the first coil changes, or the inductances of the first coil and the second coil change simultaneously, the detection unit judges that the electric conductor is in place when the real-time inductance of the first coil is equal to or smaller than the real-time inductance of the second coil, and judges that the electric conductor is not in place when the real-time inductance of the first coil is larger than the real-time inductance of the second coil. The invention can automatically detect the presence or absence of the conductor, does not need a mechanical transmission device, an elastic structure and an active device, is not influenced by dirt and moisture, and can improve the reliability and prolong the service life of the device.

Description

On-site detection device, cold light source and endoscope

Technical Field

The invention relates to the field of medical equipment, in particular to an in-situ detection device, a cold light source and an endoscope.

Background

Endoscopes are known to be an important viewing aid in the industrial technology and medical fields. Endoscopes used in the medical field can perform various operations by inserting an elongated insertion portion into a body cavity, which is a subject, to observe organs in the body cavity, or by using a treatment instrument inserted into an insertion channel of the treatment instrument as needed. The endoscope cold light source is a device for providing illumination for endoscopic surgery or examination, and the light guide component, usually a fiber optic device passing through the endoscope tube, guides the high-brightness illumination light of the endoscope cold light source to provide illumination for the subject to obtain an endoscope image for observation or operation.

In order to avoid inserting and pulling out the light guide component when the cold light source of the endoscope is in a light-on state, the cold light source is turned on, so that high-brightness light is directly emitted from the light outlet, and interference or injury is caused to a user. In the prior art, as disclosed in patent document CN104095603A, a light shielding plate is provided in a light emitting path of a cold light source, and the light shielding plate is opened when the light guide member is inserted and closed when the light guide member is extracted. However, the elastic force of the elastic member included in the light shielding structure is reduced after the light shielding structure is used for many times, and the light shielding plate may not be completely returned to the original position, so that the light shielding structure cannot effectively shield light. Alternatively, as disclosed in the patent document CN205979370U, the electrical contact detection method adopted by the present disclosure not only includes an elastic member that may not effectively shield light after multiple uses, but also the electrical contact point may be electrically contacted poorly due to oxidation of the contact point and oil contamination after long-term use, so that the detection mechanism fails and the light source cannot be turned on or off correctly. The detection device formed by the infrared transmitting tube and the infrared receiving tube is adopted, and a complex mechanical or optical structure is usually adopted, so that the infrared transmitting tube and the infrared receiving tube are far away from a high-temperature light outlet, the risks of high-temperature aging and damage are reduced, and meanwhile, the diffuse reflection of infrared light possibly influences the detection accuracy.

Disclosure of Invention

In view of this, the present application provides an in-place detection apparatus, a cold light source and an endoscope, which can automatically detect whether an electrical conductor is in place to perform a corresponding control operation, such as turning on or off the cold light source, without a mechanical transmission device, an elastic structure or an active device, and without being affected by dirt and moisture, thereby improving the reliability and the service life of the apparatus.

In order to achieve the above object, a first aspect of embodiments of the present invention provides an in-place detection apparatus, which adopts an inductance detection technology as an implementation manner, and includes a first coil, a second coil, and a detection unit, where the first coil and the second coil are both connected to the detection unit, and an initial inductance of the first coil is greater than an initial inductance of the second coil; when the conductor moves in the sensing area of the in-place detection device, so that the inductance of the first coil changes, or the inductances of the first coil and the second coil change simultaneously, the detection unit determines that the conductor is in place when the real-time inductance of the first coil is equal to or smaller than the real-time inductance of the second coil, and determines that the conductor is not in place when the real-time inductance of the first coil is larger than the real-time inductance of the second coil.

In one embodiment, the first end of the first coil and the second end of the first coil are connected to the detection unit, the first end of the second coil and the second end of the second coil are connected to the detection unit, and the second end of the first coil is connected to the first end of the second coil.

In one embodiment, the first coil and the second coil are located in a plane.

In one embodiment, the first coil is disposed opposite to the second coil.

In one embodiment, the presence detection device further comprises a conductive reference body, and the reference body is located in a sensing range of the second coil.

In one embodiment, the presence detection device adjusts the sensing region according to a presence detection range of the conductive body.

A second aspect of the present invention provides a cold light source, including a light emitting device, a control system, a connection socket, and the in-place detection device of each of the above embodiments, where the in-place detection device is connected to the control system, the light emitting device is connected to the control system, the in-place detection device is disposed between the light emitting device and the connection socket, and a first socket of the connection socket is used for connecting a light guide component to the cold light source to guide out a light source emitted by the light emitting device, where a connection end of the light guide component includes the electrical conductor; when the in-place detection device judges that the conductive body is in place or not in place, a feedback signal is sent to the control system, and the control system controls the light-emitting device to be turned on or turned off according to the feedback signal.

In one embodiment, the connection socket further comprises a second jack, the second jack has a different interface form from the first jack, and the second jack is interchangeable with the first jack.

As one embodiment, the cold light source further includes a power supply module, and the power supply module is connected to the light-emitting device, the control system, and the in-place detection device to provide a power supply voltage.

In a third aspect of the present invention, there is provided an endoscope, as one embodiment, the endoscope including the cold light source and the light guide member.

In summary, the present invention provides an in-place detection apparatus, a cold light source and an endoscope, wherein the in-place detection apparatus is provided with a first coil, a second coil and a detection unit, an initial inductance of the first coil is greater than an initial inductance of the second coil, wherein when a conductive body moves in a sensing region of the in-place detection apparatus to change the inductance of the first coil, or the inductances of the first coil and the second coil change simultaneously, the detection unit determines that the conductive body is in place when a real-time inductance of the first coil is equal to or less than a real-time inductance of the second coil, and determines that the conductive body is not in place when the real-time inductance of the first coil is greater than the real-time inductance of the second coil, so as to automatically detect whether the conductive body is in place, thereby performing a corresponding operation, such as turning on or off the cold light source, and solving a problem of light leakage at a light outlet of the cold light source, the scheme does not need a mechanical transmission device, an elastic structure or an active device, is not influenced by dirt and moisture, and can improve the reliability and prolong the service life of the device.

Drawings

Fig. 1 shows a schematic diagram of an in-place detection apparatus according to a first embodiment of the present invention.

Fig. 2 is a schematic diagram illustrating inductance change during detection by the presence detection apparatus provided in the embodiment of fig. 1.

Fig. 3 shows a schematic diagram of an in-place detection apparatus according to a second embodiment of the present invention.

Fig. 4 is a schematic diagram illustrating inductance change during detection by the presence detection apparatus provided in the embodiment of fig. 3.

Fig. 5 shows a schematic diagram of an in-place detection apparatus according to a third embodiment of the present invention.

Fig. 6 is a schematic diagram illustrating inductance change during detection by the presence detection apparatus provided in the embodiment of fig. 5.

Fig. 7 is a schematic diagram illustrating a structure of a cold light source according to an embodiment of the invention.

Fig. 8 is a perspective view of an endoscope according to an embodiment of the present invention.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

First, the inventive concept of the present invention is described in order to better understand and summarize the technical solution of the present aspect. For the cold light source of the endoscope, a socket is provided thereon, the light guide member can be inserted through the socket, the connection of the light guide member and the cold light source is completed, and then the high-intensity illumination light inside the cold light source of the endoscope is guided by the light guide member to the subject or the operation space after being processed. Then, in order to solve the problem that when the cold light source of the endoscope is always turned on and the light guide component is inserted or pulled out, the light outlet of the cold light source, that is, the socket on the cold light source, may leak light, thereby causing interference or injury to a user, the applicant has improved the cold light source of the endoscope, that is, by the in-place detection device provided by the present application, whether the light guide component (the connection end of the light guide component has the electric conductor) reaches a preset light outlet path or not is judged by comparing the inductances of the two coils, that is, whether the light guide component is in place or not, thereby turning on or turning off the light emitting device in the cold light source through the control system. Need not mechanical transmission device cooperation in this scheme, do not need elastic construction, do not have active device to be close to the light-emitting window, do not receive the influence of filth, oil stain, moisture etc. can improve the reliability and the life of whole device. Of course, it is well known that a data corresponding to whether the light guide component is in place or not needs to perform parameter setting on parameters of the relevant component, which are detected in advance by experiments and set accordingly, and are not described herein again.

On the basis of the above general description of the present invention, the following will describe embodiments for implementing the present invention with reference to the accompanying drawings, and further detailed description will be provided for the specific embodiments of the present invention, such as the connection manner and connection relationship between the respective portions, the operation and working principle of the respective portions, and the like.

With reference to fig. 1, fig. 1 is a schematic diagram of an in-place detection apparatus according to a first embodiment of the present invention. As shown in fig. 1, the in-place detection apparatus employs an inductance detection technique, which includes a first coil 11, a second coil 12 and a detection unit 13, wherein both the first coil 11 and the second coil 12 are connected to the detection unit 13, and an initial inductance of the first coil 11 is greater than an initial inductance of the second coil 12; when the conductor moves in the sensing area 14 of the in-place detection device and the inductance of the first coil 11 changes, the detection unit 13 determines that the conductor is in place when the real-time inductance of the first coil 11 is equal to or less than the real-time inductance of the second coil 12, and determines that the conductor is not in place when the real-time inductance of the first coil 11 is greater than the real-time inductance of the second coil 12.

Specifically, in the present embodiment, the first end of the first coil 11 and the second end of the first coil 11 are connected to the detection unit 13, the first end of the second coil 12 and the second end of the second coil 12 are connected to the detection unit 13, and the second end of the first coil 11 is connected to the first end of the second coil 12. That is to say that in the present example, there is a common connection between the first coil 11 and the second coil 12 and the detection unit 13. Of course, in another embodiment, the first coil 11 and the second coil 12 may be independently connected to the detection unit 13, and are not limited to the connection mode with the common connection terminal shown in fig. 1.

In addition, since the present invention determines whether the conductive body is in place by comparing the inductance values of the first coil 11 and the second coil 12, there may be various embodiments for the position relationship of the two coils or the specific shape of the coils, as long as the in-place detection range of the conductive body is taken as a reference, the range to be sensed by the in-place detection device is determined by performing corresponding parameter setting on the two coils and the detection circuit in the detection unit 13, so that after the conductive body enters the sensing region 14, the inductance value of a single coil or two coils changes, and when the inductance values of the two coils reach the same set value, the conductive body correspondingly reaches the preset position, that is, the conductive body is in place. It should be noted that, in actual operation, when the butt-joint reaction between the components is on the detection data, there is usually a certain fault tolerance interval, rather than a fixed value, so that it can be determined that the conductor is in place only after the inductance values of the two coils reach the same set value.

Specifically, referring to fig. 1 and fig. 2, fig. 2 is a schematic diagram illustrating inductance variation during detection by the in-place detection apparatus provided in the embodiment of fig. 1. As shown in fig. 1, the first coil 11 and the second coil 12 in fig. 1 are located in the same plane, and the moving direction of the electric conductor is shown by the arrow in fig. 1, for example, when applied to a cold light source, downward represents that the light guide member is inserted into the socket, and upward represents that the light guide member is extracted from the socket. The sensing area 14 of the position detection device is in the sensing range of the first coil 11, i.e. the movement of the conductive body only affects the inductance value change of the first coil 11. In fig. 1, when the conductive body moves from top to bottom in the sensing region 14, the inductance value of the first coil 11 and the inductance value of the second coil 12 change as shown in fig. 2, and when the inductance value of the first coil 11 changes to be the same as the inductance value of the second coil 12, it indicates that the conductive body is in place.

In one embodiment, the presence detecting apparatus further comprises a conductive reference body 15, and the reference body 15 is located in a sensing range of the second coil 12 to influence an inductance value of the second coil 12.

Specifically, referring to fig. 3, fig. 3 is a schematic diagram of an in-place detection apparatus according to a second embodiment of the present invention. As shown in fig. 3, the conductive reference body 15 is disposed in the projection area of the second coil 12 and in the sensing range thereof, so that the difference between the initial inductance values of the first coil 11 and the second coil 12 is relatively large, thereby solving the problems of the in-place detection apparatus shown in fig. 1, such as large influence from the surrounding environment and poor stability. As shown in fig. 4, fig. 4 is a schematic diagram illustrating inductance change during detection by the presence detection apparatus provided in the embodiment of fig. 3. As can be seen from fig. 4, after the conductive reference body 15 is added beside the second coil 12, the in-place detection apparatus shown in fig. 3 avoids the problem that the apparatus is greatly influenced by external factors, and improves the stability of the in-place detection apparatus.

In the above two embodiments, the first coil 11 and the second coil 12 may be integrated on a PCB according to the type of the coil, but this time is not intended to limit the position and shape of the coil in the present invention, as long as the inductance values of the first coil 11 and the second coil 12 can be compared to determine the presence or absence of the conductive body.

In one embodiment, the first coil 11 is disposed opposite the second coil 12.

Specifically, as shown in fig. 5, fig. 5 is a schematic diagram of an in-place detection apparatus according to a third embodiment of the present invention. The first coil 11 is disposed opposite to the second coil 12 in different planes. For example, the first coil 11 and the second coil 12 may be disposed in two layers of a PCB, and the distance between the two coils needs to be determined according to the actual application. At this time, the sensing region 14 of the presence detection device is within the sensing range of the first coil 11 and the second coil 12, the presence detection range of the conductive object is within the sensing region 14 of the presence detection device, and when the conductive object moves within the presence detection range, the inductance values of the first coil 11 and the second coil 12 both change, please refer to fig. 6, and fig. 6 shows a schematic diagram of the inductance change when the presence detection device provided in the embodiment of fig. 5 detects. As shown in fig. 6, when the conductive body in fig. 5 moves downward (in the cold light source, i.e. the light guide member is inserted into the socket) within the in-place detection range of the conductive body, both the first coil 11 and the second coil 12 decrease, but since the first coil 11 is close to the conductive body, the inductance value of the first coil 11 decreases faster, and according to the practical application setting, when the inductance values of the first coil 11 and the second coil 12 change to be consistent in real time, it can be determined that the conductive body has reached the preset position, i.e. the conductive body is in place.

It should be noted that the first coil 11 and the second coil 12 are disposed on different planes, so as to be disposed on the same plane, which is a preferable disposing manner, and the two coils can be simultaneously influenced to change the inductance thereof, of course, the two coils are disposed in a non-aligned manner, and the inductance of the two coils starts to change successively, so as to achieve the purpose of the present invention.

In summary, the in-place detection device provided by the present invention is provided with a first coil, a second coil and a detection unit, wherein an initial inductance of the first coil is greater than an initial inductance of the second coil, when the conductor moves in a sensing region of the in-place detection device, such that an inductance of the first coil changes, or the inductances of the first coil and the second coil change simultaneously, the detection unit determines that the conductor is in place when a real-time inductance of the first coil is equal to or less than a real-time inductance of the second coil, and determines that the conductor is not in place when the real-time inductance of the first coil is greater than the real-time inductance of the second coil, so as to automatically detect whether the conductor is in place, thereby performing a corresponding operation, such as turning on or turning off a cold light source, and solving the problem of light leakage of the cold light source when the light source is always turned on, and the light guide component is inserted or, The elastic structure or the active device is not influenced by dirt and moisture, and the reliability and the service life of the device can be improved.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a cold light source 100 according to an embodiment of the invention. As shown in fig. 7, the cold light source 100 provided in this embodiment includes an in-place detection device 110, a control system 120, a light-emitting device 130, and a connection socket (not shown in fig. 7, please refer to the connection socket 140 in fig. 8), wherein the in-place detection device 110 refers to the in-place detection devices of the above embodiments, the in-place detection device 110 is connected to the control system 120, the light-emitting device 130 is connected to the control system 120, the in-place detection device 110 is disposed between the light-emitting device 130 and the connection socket, and a first socket of the connection socket is used for connecting the light guide component 200 to the cold light source 100 to guide out the light source emitted by the light-emitting device 130, wherein a connection end of; when the presence detection device 110 determines that the conductive object is present or not, it sends a feedback signal to the control system 120, and the control system 120 controls the light emitting device 130 to turn on or off according to the feedback signal.

Specifically, as shown in fig. 7, an in-place detection device 110 of the light guide member 200 is disposed near the light exit path inside the cold light source 100, as described above, the in-place detection device 110 of the light guide member 200 employs an inductance detection technique, and can detect, through a change in inductance, position information within an in-place detection range after the light guide member 200 enters the socket, and send a feedback signal to the control system 120, and the control system 120 controls the light emitting device 130 to turn on or off according to the feedback signal in or out of place. In short, that is, when the light guide member 200 is connected to the cold light source 100, the presence detection device 110 detects that the light guide member 200 is present, and turns on the light emitting device 130, and when the light guide member 200 is disconnected from the cold light source 100, the presence detection device 110 detects that the light guide member 200 is detached, and turns off the light emitting device 130.

In one embodiment, the light emitting device 130 is a xenon lamp, an LED lamp, or a laser.

In one embodiment, the connection hub 140 further includes a second outlet that is different from the first outlet in terms of interface format, and is interchangeable with the first outlet.

Specifically, the connection socket 140 is used for inserting the light guide member 200 inside the cold light source 100, and is butted against the light emitting device 130 inside the cold light source 100 to guide the illumination light emitted from the light emitting device 130 onto the subject or into the operation space. Since the interface form of the light guide member 200 may be different, in order to accommodate the light guide member 200 with different interface forms, the connection socket 140 provided in this embodiment includes a second insertion opening that can be interchanged with the first insertion opening, for example, by rotating the second insertion opening to the position of the first insertion opening, and using the second insertion opening as the first insertion opening. It is noted that the first socket refers to a socket that interfaces with the light source of the light emitting device 130, and the sockets are interchangeable here, except that the two sockets on the connection socket 140 are interchanged. Of course, the connection socket 140 may also include 3 or more than 3 sockets to accommodate more light guide members 200.

In one embodiment, the cold light source 100 further includes a power module, which is connected to the light emitting device 130, the control system 120 and the presence detecting device 110 to provide a power voltage.

In summary, the cold light source provided by the present invention is provided with an in-place detection device, when the light guide component moves in the sensing area of the in-place detection device, so that the inductance of the first coil in the in-place detection device changes, or the inductances of the first coil and the second coil change simultaneously, the detection unit determines that the light guide component (electrical conductor) is in place when the real-time inductance of the first coil is equal to or smaller than the real-time inductance of the second coil, and determines that the light guide component is not in place when the real-time inductance of the first coil is larger than the real-time inductance of the second coil, so as to automatically detect whether the light guide component is in place, and send a feedback signal to the control system in the cold light source, and control the light emitting device in the cold light source to be turned on or off through the control system, thereby solving the problem of light leakage at the light outlet of the cold light source when the light guide, The elastic structure or the active device is not influenced by dirt and moisture, and the reliability and the service life of the device can be improved.

As shown in fig. 8, fig. 8 is a perspective view of an endoscope according to an embodiment of the present invention. As shown in fig. 8, the endoscope includes the cold light source 100 and the light guide member 200.

Referring to fig. 7 in combination, specifically, the light guide member 200 is abutted to the light emitting device 130 in the cold light source 100 through the first socket of the connection socket 140 on the cold light source 100, and a moving path of the light guide member 200 after entering the first socket is an in-place detection range of the light guide member 200. For the detailed working principle of the endoscope, please refer to the above embodiments, which are not described herein again.

In summary, the endoscope provided by the present invention is provided with the in-place detection device, when the light guide component moves in the sensing area of the in-place detection device, such that the inductance of the first coil in the in-place detection device changes, or the inductances of the first coil and the second coil change simultaneously, the detection unit determines that the light guide component (electrical conductor) is in place when the real-time inductance of the first coil is equal to or less than the real-time inductance of the second coil, and determines that the light leakage does not occur when the real-time inductance of the first coil is greater than the real-time inductance of the second coil, so as to automatically detect whether the light guide component is in place, and send a feedback signal to the control system in the endoscope, and control the light emitting device in the endoscope to be turned on or off through the control system, thereby solving the problem of the cold light source light outlet when the light guide component is inserted or pulled out when the light, The elastic structure or the active device is not influenced by dirt and moisture, and the reliability and the service life of the device can be improved.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

Claims

1. An in-place detection device is characterized in that the in-place detection device adopts an inductance detection technology and comprises a first coil, a second coil and a detection unit, wherein the first coil and the second coil are connected with the detection unit, and the initial inductance of the first coil is larger than that of the second coil;

when the conductor moves in the sensing area of the in-place detection device, so that the inductance of the first coil changes, or the inductances of the first coil and the second coil change simultaneously, the detection unit determines that the conductor is in place when the real-time inductance of the first coil is equal to or smaller than the real-time inductance of the second coil, and determines that the conductor is not in place when the real-time inductance of the first coil is larger than the real-time inductance of the second coil.

2. The in-place detection device of claim 1, wherein a first end of the first coil and a second end of the first coil are connected to the detection unit, a first end of the second coil and a second end of the second coil are connected to the detection unit, and a second end of the first coil is connected to a first end of the second coil.

3. The in-place detection device of claim 2, wherein the first coil and the second coil are in a single plane.

4. The in-place detection device of claim 2, wherein the first coil is disposed opposite the second coil.

5. The in-place detection device of claim 3, further comprising a conductive reference body located within a sensing range of the second coil.

6. The in-place detection device of claim 1, wherein the in-place detection device adjusts the sensing region according to an in-place detection range of the conductive body.

7. A cold light source, comprising a light emitting device, a control system, a connection socket, and the in-place detection device of any one of claims 1 to 6, wherein the in-place detection device is connected to the control system, the light emitting device is connected to the control system, the in-place detection device is disposed between the light emitting device and the connection socket, and a first socket of the connection socket is used for connecting a light guide component to the cold light source to guide out the light source emitted by the light emitting device, wherein the connection end of the light guide component comprises the electrical conductor;

when the in-place detection device judges that the conductive body is in place or not in place, a feedback signal is sent to the control system, and the control system controls the light-emitting device to be turned on or turned off according to the feedback signal.

8. A cold light source according to claim 7, wherein said connection socket further comprises a second socket having a different interface form than said first socket, said second socket being interchangeable with said first socket.

9. A cold light source according to claim 7, further comprising a power supply module connected to said light emitting means, said control system and said presence detection means to provide a supply voltage.

10. An endoscope comprising a cold light source according to claims 7-9 and a light guide.