CN107515460A - A kind of overload protecting mechanism and overload protection method of endoscope draught line - Google Patents
A kind of overload protecting mechanism and overload protection method of endoscope draught line Download PDFInfo
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- CN107515460A CN107515460A CN201710956885.6A CN201710956885A CN107515460A CN 107515460 A CN107515460 A CN 107515460A CN 201710956885 A CN201710956885 A CN 201710956885A CN 107515460 A CN107515460 A CN 107515460A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2476—Non-optical details, e.g. housings, mountings, supports
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2476—Non-optical details, e.g. housings, mountings, supports
- G02B23/2484—Arrangements in relation to a camera or imaging device
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Abstract
The invention discloses a kind of overload protecting mechanism and overload protection method of endoscope draught line.Wherein, the overload protecting mechanism includes：Insertion tube assembly, at least CCD camera assembly for being connected to the insertion tube assembly, a draught line, pressure sensor, rotating disc, drive component and controller；Rotate disc side and be provided with connecting portion；The first end of draught line is connected through the connecting portion of rotating disc with pressure sensor, and the second end is connected through insertion tube assembly and with CCD camera assembly；Drive component is connected with rotating disc, for driving turn disc；Controller is electrically connected with drive component and pressure sensor, for driving the operation of the drive component according to the pressure signal of pressure sensor transmission, so as to realize effective protection to endoscope draught line, prevents its overload breakage.
Description
Technical field
The invention belongs to detection technique field, more particularly to a kind of overload protecting mechanism of endoscope draught line and overload to protect
Maintaining method.
Background technology
Endoscope is in medical field and industrial circle extensive application.In medical field, endoscope-use is in intestines and stomach
The inspection of disease, the inspection of pancreas and disease of biliary tract, celioscopy, breathing problem inspection and the urinary tract inspection etc..
Industrial circle, endoscope-use in the inspection and observation in the place that can not be observed directly to high temperature, poisonous, nuclear radiation and human eye,
For example, steam turbine, engine, automobile pipeline, pressure vessel and machine components etc., can be not required to dismantle or destroy assembling and equipment
Lossless visual detection is realized in the case of out of service.When endoscopic applications are in industrial circle, endoscope generally require bending,
Turn to and get to need the place checked.
In the market in existing endoscope, drive device rotates disc spins in driving, drives draught line to pull shooting
During head is turned, have when camera bends to angle or the camera bending of setting and be obscured by an obstacle, drive device
Continue the situation generation for driving turn disc to cause steel wire rope to be pulled off.Therefore, endoscope draught line mistake how is effectively prevented
Fracture is carried, turns into a urgent problem to be solved.
The above is only used for auxiliary and understands technical scheme, does not represent and recognizes that the above is existing skill
Art.
The content of the invention
The main object of the present invention is to propose a kind of overload protecting mechanism and overload protection method of endoscope draught line, purport
Solving existing endoscope in use, the technical problem of the easy overload breakage of draught line.
To achieve the above object, the overload protecting mechanism of a kind of endoscope draught line proposed by the present invention, the overload are protected
Shield mechanism includes：Insertion tube assembly, at least CCD camera assembly for being connected to the insertion tube assembly, a draught line, pressure sensing
Device, rotating disc, drive component and controller；
The rotation disc side is provided with connecting portion；
The first end of the draught line is connected through the connecting portion of the rotating disc with the pressure sensor, and the second end is passed through
Wear the insertion tube assembly and be connected with the CCD camera assembly；The first end of the draught line is in the rotating disc connecting portion
Drive under the pressure sensor is abutted with the connecting portion, the CCD camera assembly is drawn towards corresponding lateral bending in the second end
It is bent；
The drive component is connected with the rotating disc, for driving the turn disc；
The controller is electrically connected with the drive component and the pressure sensor, for controlling the drive component
Operation.
Preferably, the rotation disc side is provided with chute, and the draught line is arranged in the chute.
Preferably, the connecting portion is the ear mount that the rotating disc symmetrically stretches out, and the ear mount is provided with through hole, institute
The first end for stating draught line is connected through the through hole with the pressure sensor.
Preferably, the first end end of the draught line is provided with stop part.
Preferably, the pressure sensor is arranged between ear mount corresponding to the stop part and the stop member.
Preferably, the insertion tube assembly includes：Wear-resistant pipe and swan-neck；The wear-resistant pipe and the swan-neck are detachable
Formula is connected, and one end of the swan-neck is connected with the CCD camera assembly.
Preferably, the overload protecting mechanism also includes：Signal amplifier, to what is sensed to the pressure sensor
Pressure signal is amplified.
Preferably, the CCD camera assembly and the insertion tube assembly are detachable connection.
The present invention also provides a kind of overload protection method of endoscope draught line, and methods described includes：
Controller receives the pressure signal to be sampled that pressure sensor is sent, and the pressure signal to be sampled is adopted
Sample, obtain sampled signal；
The controller carries out analog-to-digital conversion, pressure value corresponding to acquisition to the sampled signal；
The controller controls the drive component to stop driving when detecting that the pressure value exceedes preset pressure threshold value
Move the turn disc or the control drive component drives the rotating disc to rotate backward.
Preferably, the controller receives the pressure signal to be sampled that pressure sensor is sent, to the pressure to be sampled
Signal is sampled, and before obtaining sampled signal, the overload protection method also includes：
Pressure sensor pressure signal according to corresponding to current carrying pressing creation, and the pressure information is transmitted to letter
Number amplifier；
The signal amplifier carries out signal amplification to the pressure signal and obtains pressure signal to be sampled, and is treated described
Sampled pressure signal is sent to the controller.
Preferably, the controller is single-chip microcomputer, and correspondingly, the controller carries out modulus to the sampled signal and turned
Change, after pressure value corresponding to acquisition, the overload protection method also includes：
The controller is analyzed according to the pressure value and the preset pressure threshold value that get by pre-set control algorithm
And generate control instruction；
The controller controls the drive component to drive the turn disc according to the control instruction, described default
Algorithm includes FUZZY ALGORITHMS FOR CONTROL and proportional integral derivative control algolithm.
The overload protecting mechanism of endoscope draught line provided by the invention is sensed in draught line in real time by pressure sensor
The pressure born when being abutted under driving with rotating disc connecting portion, and by the pressure signal transmission measured to for controlling driving group
Part drives the controller of turn disc, so that the controller is according to corresponding to obtaining the pressure signal of pressure sensor transmission
Pressure value, and when pressure value exceedes pressure threshold set in advance, control drive component stop band turn Moving plate is rotated further,
So as to realize effective protection to endoscope draught line, its overload breakage is prevented.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is the structural representation of the overload protecting mechanism of endoscope draught line provided by the invention；
Fig. 2 is the structural representation of the overload protecting mechanism working condition of endoscope draught line provided by the invention；
Fig. 3 is the partial enlarged drawing at A in Fig. 1；
Fig. 4 is the schematic flow sheet of the overload protection method first embodiment of endoscope draught line of the present invention；
Fig. 5 is the schematic flow sheet of the overload protection method second embodiment of endoscope draught line of the present invention；
Fig. 6 is circuit theory diagrams corresponding to foil gauge in the overload protecting mechanism of endoscope draught line of the present invention；
Fig. 7 is the schematic flow sheet of the overload protection method 3rd embodiment of endoscope draught line of the present invention.
Drawing reference numeral explanation：
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that specific embodiment described herein is not intended to limit the present invention only to explain the present invention.
In order to facilitate the understanding of the purposes, features and advantages of the present invention, below in conjunction with the accompanying drawings to the present invention
Embodiment be described in detail.Many details are elaborated in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case of running counter to intension of the present invention, therefore the present invention is not limited to the specific embodiments disclosed below.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more phases
The arbitrary and all combination of the Listed Items of pass.
The overload protecting mechanism for the endoscope draught line that one embodiment of the invention provides can be applied on an endoscope.
As shown in figure 1, in the present embodiment, the overload protecting mechanism of the endoscope draught line includes：Insertion tube assembly 20,
It is connected to the CCD camera assembly 10 of the insertion tube assembly 20, (the present embodiment includes the first draught line 30 to an at least draught line 3
With the second draught line 31), pressure sensor 60, rotating disc 40, drive component (not shown) and controller (do not show in figure
Go out)；
Because in the overload protecting mechanism of the endoscope draught line of the present embodiment proposition, members are (such as：Connection
Portion, pressure sensor etc.) it can be symmetrical arranged, so being explained exemplified by sentencing wherein side to the present embodiment technical scheme
It is bright.
Fig. 1 is refer to, wherein, the side of rotating disc 40 is provided with connecting portion 50；The drive component and the rotating disc
40 connections, for driving the rotating disc 40 to rotate；The controller and the drive component and the electricity of the pressure sensor 60
Property connection, for controlling the operation of the drive component；The first end of first draught line 30 passes through the rotating disc 40
Connecting portion 50 is connected with the pressure sensor 60, the second end through it is described insertion tube assembly 20 and with the CCD camera assembly
10 connections；The first end of first draught line 30 makes the pressure sensing under the drive of the connecting portion 50 of the rotating disc 40
Device 60 abuts with the connecting portion 50, and the CCD camera assembly 10 is drawn towards corresponding lateral bend in the second end.
In the present embodiment, the overload protecting mechanism of endoscope draught line controls the drive component to transport by the controller
OK, the drive component drives rotating disc 40 to rotate clockwise or counterclockwise.Rotating disc 40 is set when rotating on rotating disc 40
Connecting portion 50 pull the first draught line 30 with control insert tube assembly 20 steering, connected so as to drive and insert tube assembly 20
CCD camera assembly 10 towards corresponding lateral bend, to realize testing goal.First draught line 30 is in the connecting portion 50 of rotating disc 40
Drive under, pressure sensor 60 is abutted with connecting portion 50 by the stop part 70 for being arranged on the first end end of draught line 30,
Pressure sensor 60 senses the pressure that current time bears and generates pressure signal in real time, then feeds back to the pressure signal
The controller.
In the present embodiment, the controller can be single-chip microcomputer or other devices or electricity with control function
Road；The drive device can be motor, for example, servomotor, steering wheel or other that rotating disc 40 can be driven to rotate is dynamic
Power apparatus, the present embodiment are not any limitation as to this.
As shown in Fig. 2 in actual applications, drive device drives rotating disc 40 towards presetting under the control of the controller
Direction rotate, when pressure sensor 60 abuts with connecting portion 50 in rotary course, the sensing and to control in real time of pressure sensor 60
The pressure signal that device feedback processed measures, so that controller controls drive device to drive exactly according to pressure signal situation of change
Rotating disc 40 can continue to rotate, reversely rotate or stop the rotation towards direction set in advance, to realize to endoscope draught line
Protection, prevent its fracture.When rotating disc 40 rotates towards direction set in advance, the second draught line 31 is due to its first end end
The stop part that portion is set is away from corresponding connecting portion, therefore the pressure sensor corresponding to the second draught line 31 is (when the pressure passes
When sensor is arranged on stop part close to rotating disc connecting portion side) also therewith away from corresponding connecting portion.
Fig. 1 and Fig. 3 are refer to, Fig. 3 is the close-up schematic view at A in Fig. 1.
As shown in figure 3, in the overload protecting mechanism 1 of the endoscope draught line provided in the present embodiment rotating disc 40 side
Provided with chute 80, the chute 80 is preventing the first draught line 30 and the second draught line 31 in the process rotated with rotating disc 40
Middle generation lateral displacement.The connecting portion 50 can be the ear mount that the rotating disc 40 symmetrically stretches out, and ear mount is provided with through hole
(not shown)；The first end of first draught line 30 is connected through the through hole with the pressure sensor 60.It is described
The first end of first draught line 30 is provided with stop part 70, to prevent first draught line 30 from being come off from ear mount, accordingly
Ground, the first end of second draught line 31 are also provided with stop part, to prevent second draught line 31 from corresponding ear
Come off on seat；The pressure sensor 60 is arranged between ear mount corresponding to the stop part 70 and the stop member；The backstop
Part 70 can be the clip for having fastening effect, can also be other fastenings that can prevent draught line from being come off from ear mount
Part；In addition, it is contemplated that the use environment of endoscope is typically mostly steam turbine, engine or automobile pipeline etc., it is preferable that described to lead
Lead 3 uses steel wire rope.
Further, in order to simplify overload protecting mechanism structure, production cost is reduced.Preferably, the pressure sensor
60 are chosen as metal dome.Because metal dome has the resistance value that metal fixes in itself, when its by the stretching of applied external force or
During compression, its corresponding resistance value also accordingly changes, so as to realize the real-time sensing to pressure.Specific real
In existing, pressure sensor 60 will can measure when the pressure (pulling force that i.e. draught line is subject to) born to itself senses
Pressure signal is transmitted to signal amplifier, such as：The universal operational amplifiers of LM2904, to pass after being amplified to pressure signal
Controller is handed to, to prevent the too small controller of pressure signal can not carry out the situation of signal sampling from occurring；The signal amplifier
Electrically connected with pressure sensor 60 and controller.
In the present embodiment, insertion tube assembly 20 includes：Wear-resistant pipe 21 and swan-neck 22, insertion tube assembly 20 can also be arranged one
Layer tungsten silk screen and waterproof membrane, tungsten silk screen are used to protect insertion tube assembly 20 to avoid its abrasion；Waterproof membrane can prevent pigment from entering
Insert inside tube assembly 20.Wear-resistant pipe 21 is connected with swan-neck 22, and one end of swan-neck 22 is connected with CCD camera assembly 10, shooting
Head assembly 10 be detachable connection with insertion tube assembly 20, convenient disassembly, be easy to according to be actually needed change different model with
The CCD camera assembly 10 of specification, swan-neck 22 can realize 360 ° arbitrarily under the drive of the first draught line 30 or the second draught line 31
To bending.Wear-resistant pipe 21 and the detachable connection of swan-neck 22, it is easy to be changed during any one pipe damage wherein.
Certainly, one layer of damping hose can be also arranged outside the tungsten silk screen of above-mentioned wear-resistant pipe 21 in the present embodiment, it is resistance to for protecting
Mill pipe 21 prevents it to be broken off in operation, extends the service life of wear-resistant pipe 21.
It is described depending on the joint ring that angle that the swan-neck 22 can be bent can be set in pipe in actual conditions
The number of joint ring can configure according to actual conditions.The bending radius of wear-resistant pipe 21 is big, for by swan-neck 22 and camera
Component 10 delivers to detected part, and the bending radius of the swan-neck 22 is small, is taken the photograph for being controlled under the drive of the first draught line 30
Direction and angle as head assembly 10.
It should be noted that the radical of draught line can also be selected according to actual conditions in the present invention, it can be 1, also may be used
Think more.It is understood that when the radical of the draught line is more, can be new by additionally increasing rotating disc and driving
The drive device of the turn disc of increasing, newly-increased drive device are electrically connected with controller.
Certainly, the overload protecting mechanism can also include：Display module, the display module are used to show the shooting
The image of head assembly collection, the image for allowing the user to be gathered in real time according to the CCD camera assembly 10 immediately adjust shooting
Detection position corresponding to head assembly 10.
The overload protecting mechanism for the endoscope draught line that the present embodiment provides is sensed and rotated in real time by pressure sensor
The pressure that disk connecting portion is born when abutting, and by the pressure signal transmission measured to for controlling drive component to drive rotating disc
The controller of rotation, so that controller pressure value according to corresponding to obtaining the pressure signal of pressure sensor transmission, and
When pressure value exceedes pressure threshold set in advance, control drive component stop band turn Moving plate is rotated further, so as to realize pair
Effective protection of endoscope draught line, prevents its overload breakage.
Based on above-mentioned hardware configuration, the overload protection method embodiment of endoscope draught line of the present invention is proposed.
Reference picture 4, propose the overload protection method first embodiment of endoscope draught line of the present invention.
In the present embodiment, the overload protection method of the endoscope draught line comprises the following steps：
Step S10：Controller receives the pressure signal to be sampled that pressure sensor is sent, to the pressure signal to be sampled
Sampled, obtain sampled signal；
It should be noted that the executive agent of the present embodiment method is controller, the control machine can be controlled
The control device of drive device operation, such as single-chip microcomputer etc.；Correspondingly, the drive device can be motor, such as watch
The power set of turn disc can be driven by taking motor or other, and the present embodiment is not any limitation as to this.
In the specific implementation, the controller real-time reception is arranged on the pressure sensor sense of rotating disc connecting portion opening position
The pressure signal measured, and signal sampling is carried out to the pressure signal (i.e. described pressure signal to be sampled), obtain sampled signal
Step S20：The controller carries out analog-to-digital conversion, pressure value corresponding to acquisition to the sampled signal；
It will be appreciated that generally, the pressure signal that the controller sampling obtains needs to carry out analog-to-digital conversion
It can be handled, its specific implementation can be realized by A/D converter, and the controller enters to the sampled signal
After row analog-to-digital conversion, pressure on the number signal corresponding to acquisition, the pressure is obtained with according to the pressure on the number signal and passed
Pressure value corresponding to the pressure signal that sensor senses, and then obtain the value of thrust that current time draught line is born.
Step S30：The controller controls the driving group when detecting that the pressure value exceedes preset pressure threshold value
Part stops driving the turn disc or the control drive component to drive the rotating disc to rotate backward.
It is understood that in order to prevent the value of thrust that draught line is born from breaking more than the ultimate tension value that it can bear
Split, a pulling force threshold value smaller than the ultimate tension value can be preset to prevent draught line overload breakage, such as：Work as traction
Can be pulled off when the pulling force that line is subject to is more than 190N, in order to prevent the occurrence of such, then can by the pulling force threshold value (namely
The preset pressure threshold value) 150N is arranged to, so that the pressure that controller obtains in the pressure signal sensed according to pressure sensor
When force value is more than 150N, the drive component is controlled to stop driving the turn disc or the control drive component to drive immediately
Move the rotating disc to rotate backward, so as to avoid draught line from being pulled off.
In the present embodiment, when controller is abutted by obtaining pressure sensor under draught line drive with rotating disc connecting portion
The pressure signal born, corresponding pressure value is calculated according to pressure signal, exceed pressure threshold set in advance in pressure value
During value, the instruction of generation drive control is turned with controlling drive component stop band turn Moving plate to be rotated further or control drive component to drive
Moving plate rotates backward, and so as to realize effective protection to endoscope draught line, prevents its overload breakage.
With reference to figure 5, Fig. 5 is the schematic flow sheet of the overload protection method second embodiment of endoscope draught line of the present invention.
Based on above-mentioned first embodiment, the overload protection method for the endoscope draught line of the present invention that the present embodiment proposes is in step
Before rapid S10, in addition to：
Step S01：Pressure sensor pressure signal according to corresponding to current carrying pressing creation, and by the pressure information
Transmit to signal amplifier；
Step S02：The signal amplifier carries out signal amplification to the pressure signal and obtains pressure signal to be sampled, and
The pressure signal to be sampled is sent to the controller.
It should be noted that in order to simplify overload protecting mechanism structure, production cost is reduced.Pressure described in the present embodiment
Sensor selects the foil gauge or metal dome of metal material, and in the present embodiment, the foil gauge has the electricity that metal is fixed in itself
Resistance, once by the stretching or compression of applied external force, its resistance value also increases or reduced therewith, in addition the foil gauge
Quantity can be depending on actual conditions, and the present embodiment is not any limitation as to this.
In the present embodiment, circuit theory diagrams corresponding to the foil gauge are as shown in fig. 6, wherein, the foil gauge may include：
First resistor R1, second resistance R2,3rd resistor R3 and the 4th resistance R4；In order to improve the sensitive of foil gauge sensing pressure signal
Degree, the present embodiment use and arm electric bridge connection, i.e. first resistor R1 first end are connected with the 4th resistance R4 first end；Second
Resistance R2 first end is connected with first resistor R1 the second end, second resistance R2 the second end and 3rd resistor R3 the second end
Connection；3rd resistor R3 first end is connected with the 4th resistance R4 the second end；First resistor R1 first end and second resistance
R2 the second end is voltage input end U；First resistor R1 the second end and 3rd resistor R3 first end are voltage output end.Its
In, the foil gauge for sensing pressure signal corresponds to the first resistor R1 and 3rd resistor R3；The electricity of the second resistance R2 and the 4th
Resistance R4 is temperature-compensating plate, so that aforementioned four resistance is in same temperature field, excludes influence of the temperature to resistance, is
Testing result is more accurate.
It should be understood that although foil gauge is employed to the connected mode of arm electric bridge but its output voltage letter in the present embodiment
Number (i.e. pressure signal) is probably smaller, therefore we can use signal amplifier 90, such as the universal computings of LM2904
Amplifier, the voltage signal to be exported to foil gauge are amplified, and obtain the pressure signal to be sampled, now described to be sampled
Pressure signal can allow controller to sample enough.
Pressure sensor pressure signal according to corresponding to current carrying pressing creation in the present embodiment, and the pressure is believed
Breath is transmitted to signal amplifier；The signal amplifier carries out signal amplification to the pressure signal and obtains pressure letter to be sampled
Number, and the pressure signal to be sampled is sent to the controller.So as to ensure sampling of the controller to pressure signal,
Avoid pressure sensor sensing pressure signal it is smaller cause that controller can not sample the occurrence of.
With reference to figure 7, Fig. 7 is the schematic flow sheet of the overload protection method 3rd embodiment of endoscope draught line of the present invention.
Based on the various embodiments described above, the overload protection method for the endoscope draught line of the present invention that the present embodiment proposes is in step
After S20, in addition to：
Step S201：The controller passes through default control according to the pressure value and the preset pressure threshold value got
Algorithm Analysis processed simultaneously generates control instruction；
Step S202：The controller controls the drive component to drive the rotating disc to turn according to the control instruction
Dynamic, the preset algorithm includes FUZZY ALGORITHMS FOR CONTROL and proportional integral derivative control algolithm.
It will be appreciated that the FUZZY ALGORITHMS FOR CONTROL is a kind of non-linear rule-based control algolithm, its feature is existing
The theoretical of systematization has actual application background again.Widely should have in fields such as robot control, car steering, escalators
With.Fuzzy control neural network control algorithm is directly using language type control rule, according to the control experience of site operation personnel, is not had
One accurate mathematical modeling, so that controlling mechanism is easy to receive and understood, design is simple, is easy to apply.The ratio
P (ratio), it is exactly that input deviation multiplies in integral derivative (Proportion Integral Derivative, PID) control algolithm
With a constant；I (integration), it is exactly that integral operation is carried out to input deviation；D (differential), differentiates to input deviation.
The proportional integral derivative algorithm is specifically divided to two kinds：A kind of is position model, and a kind of is increment type.The PID control of position model
The amount of calculation of algorithm is very big, it is necessary to be added up to control error each time, and output and past institute are stateful relevant.Cause
This, the pid control algorithm for the increment type selected in the present embodiment.
It should be noted that there is small volume, light weight, cheap in view of single-chip microcomputer, in the present embodiment
The controller selects single-chip microcomputer.Meanwhile in order to protect draught line not to be pulled off and not influence the spirit of the overload protecting mechanism
Sensitivity, the present embodiment first drive draught line quickly to pull camera using FUZZY ALGORITHMS FOR CONTROL control drive component driving rotating disc
Component is bent, so that value of thrust corresponding to draught line is rapidly close to default pulling force threshold value (i.e. described preset pressure threshold value), and
Draught line is accurately controlled when value of thrust corresponding to the draught line is close to the pulling force threshold value, then using pid control algorithm
Position.
Controller is calculated according to the pressure value and the preset pressure threshold value that get by default control in the present embodiment
Method is analyzed and generates control instruction, and the control instruction controls the drive component to drive the turn disc, so as to
The accurate control to draught line is enough realized, improves the Consumer's Experience in detection process.
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row
His property includes, so that process, method, article or system including a series of elements not only include those key elements, and
And also include the other key elements being not expressly set out, or also include for this process, method, article or system institute inherently
Key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including this
Other identical element also be present in the process of key element, method, article or system.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on such understanding, technical scheme is substantially done to prior art in other words
Going out the part of contribution can be embodied in the form of software product, and the computer software product is stored in a storage medium
In (such as ROM/RAM, magnetic disc, CD), including some instructions to cause a station terminal equipment (can be mobile phone, computer, clothes
Be engaged in device, air conditioner, or network equipment etc.) perform method described in each embodiment of the present invention.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of overload protecting mechanism of endoscope draught line, it is characterised in that the overload protecting mechanism includes：Insertion tube group
Part, be connected to the insertion CCD camera assembly of tube assembly, an at least draught line, pressure sensor, rotating disc, drive component and
Controller；
The rotation disc side is provided with connecting portion；
The drive component is connected with the rotating disc, for driving the turn disc；
The controller is electrically connected with the drive component and the pressure sensor, for controlling the drive component to transport
OK；
The first end of the draught line is connected through the connecting portion of the rotating disc with the pressure sensor, and institute is run through at the second end
State insertion tube assembly and be connected with the CCD camera assembly；Band of the first end of the draught line in the rotating disc connecting portion
The pressure sensor is set to be abutted with the connecting portion under dynamic, the CCD camera assembly is drawn towards corresponding lateral bend in the second end.
2. overload protecting mechanism as claimed in claim 1, it is characterised in that the rotation disc side is provided with chute, described to lead
Lead is arranged in the chute.
3. overload protecting mechanism as claimed in claim 2, it is characterised in that the connecting portion is that the rotating disc is symmetrically outside
The ear mount of extension, the ear mount are provided with through hole, and the first end of the draught line passes through the through hole and the pressure sensor
Connection.
4. overload protecting mechanism as claimed in claim 3, it is characterised in that the first end end of the draught line is provided with backstop
Part.
5. overload protecting mechanism as claimed in claim 4, it is characterised in that the pressure sensor is arranged on the stop part
Between ear mount corresponding to the stop member.
6. overload protecting mechanism as claimed in claim 5, it is characterised in that the insertion tube assembly includes：Wear-resistant pipe and curved
Curved tube；
The wear-resistant pipe and the swan-neck detachable connection, one end of the swan-neck is connected with the CCD camera assembly.
7. overload protecting mechanism as claimed in claim 6, it is characterised in that the overload protecting mechanism also includes：Signal is put
Big device, the pressure signal to be sensed to the pressure sensor are amplified.
8. a kind of endoscope of the overload protecting mechanism of endoscope draught line using any one of claim 1 to 7 is led
The overload protection method of lead, it is characterised in that the overload protection method includes：
Controller receives the pressure signal to be sampled that pressure sensor is sent, and the pressure signal to be sampled is sampled, obtained
Take sampled signal；
The controller carries out analog-to-digital conversion, pressure value corresponding to acquisition to the sampled signal；
The controller controls the drive component to stop driving institute when detecting that the pressure value exceedes preset pressure threshold value
State turn disc or the control drive component drives the rotating disc to rotate backward.
9. overload protection method as claimed in claim 8, it is characterised in that the controller receives what pressure sensor was sent
Pressure signal to be sampled, the pressure signal to be sampled is sampled, before obtaining sampled signal, the overload protection method
Also include：
Pressure sensor pressure signal according to corresponding to current carrying pressing creation, and the pressure information is transmitted to signal and put
Big device；
The signal amplifier carries out signal amplification to the pressure signal and obtains pressure signal to be sampled, and will be described to be sampled
Pressure signal is sent to the controller.
10. overload protection method as claimed in claim 9, it is characterised in that the controller is single-chip microcomputer；
Correspondingly, the controller is to sampled signal progress analog-to-digital conversion, after pressure value corresponding to acquisition, the overload
Guard method also includes：
The controller is analyzed and given birth to by pre-set control algorithm according to the pressure value and the preset pressure threshold value that get
Into control instruction；
The controller controls the drive component to drive the turn disc, the preset algorithm according to the control instruction
Including FUZZY ALGORITHMS FOR CONTROL and proportional integral derivative control algolithm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710956885.6A CN107515460A (en) | 2017-10-13 | 2017-10-13 | A kind of overload protecting mechanism and overload protection method of endoscope draught line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710956885.6A CN107515460A (en) | 2017-10-13 | 2017-10-13 | A kind of overload protecting mechanism and overload protection method of endoscope draught line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107515460A true CN107515460A (en) | 2017-12-26 |
Family
ID=60727231
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710956885.6A Pending CN107515460A (en) | 2017-10-13 | 2017-10-13 | A kind of overload protecting mechanism and overload protection method of endoscope draught line |
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| Country | Link |
|---|---|
| CN (1) | CN107515460A (en) |
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| CN109116547A (en) * | 2018-09-26 | 2019-01-01 | 深圳市古安泰自动化技术有限公司 | Endoscope |
| CN111587084A (en) * | 2018-02-03 | 2020-08-25 | 深圳帧观德芯科技有限公司 | Endoscope with a detachable handle |
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| CN111587084A (en) * | 2018-02-03 | 2020-08-25 | 深圳帧观德芯科技有限公司 | Endoscope with a detachable handle |
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