CN115597508B - Aperture detection device and aperture detection method for diaphragm - Google Patents
Aperture detection device and aperture detection method for diaphragmInfo
- Publication number
- CN115597508B CN115597508B CN202110765702.9A CN202110765702A CN115597508B CN 115597508 B CN115597508 B CN 115597508B CN 202110765702 A CN202110765702 A CN 202110765702A CN 115597508 B CN115597508 B CN 115597508B
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- Prior art keywords
- aperture
- module
- detection device
- control module
- filter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
- G01B11/12—Measuring arrangements characterised by the use of optical techniques for measuring diameters internal diameters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
- G01B21/042—Calibration or calibration artifacts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Exposure Control For Cameras (AREA)
Abstract
The invention discloses an aperture detection device and an aperture detection method of an aperture, wherein the aperture detection device comprises a control module, an aperture driving circuit, a lens module, a laser module and a photoelectric sensing module, wherein the aperture driving circuit is respectively and electrically connected with the control module and the aperture and used for controlling the opening aperture of the aperture, the laser module is electrically connected with the control module and used for generating laser signals to the aperture, the laser signals form modulated laser signals after passing through the aperture, the photoelectric sensing module is positioned on a transmission path of the modulated laser signals and is electrically connected with the control module and used for receiving the modulated laser signals, converting the modulated laser signals into voltage signals and then transmitting the voltage signals to the control module, and the control module is used for determining the opening aperture of the aperture according to the voltage signals. The technical scheme of the embodiment of the invention can realize the accurate detection of the aperture of the diaphragm, and simultaneously reduce the cost of the diaphragm detection.
Description
Technical Field
The invention relates to the technical field of aperture detection, in particular to an aperture detection device and an aperture detection method.
Background
In the prior art, the diaphragm needs to be detected after the diaphragm is assembled to the lens.
The existing automatic aperture detection mainly comprises two methods, wherein the first detection method is based on an opposite-type photoelectric switch to detect the opening and closing condition of the automatic aperture, and the detection method has the defect that misjudgment is easy to occur when the aperture cannot be fully opened or fully closed. The second detection method is based on CMOS imaging, and calculates the aperture size of the diaphragm to determine whether the diaphragm is abnormal or not, which has the disadvantages of high cost and low mass productivity.
Therefore, how to realize accurate detection of the diaphragm aperture and reduce the diaphragm detection cost becomes a research hot spot.
Disclosure of Invention
The embodiment of the invention provides an aperture detection device and an aperture detection method for an aperture, which realize accurate detection of the aperture and reduce the aperture detection cost.
In a first aspect, an embodiment of the present invention provides an aperture detection apparatus for an aperture, including a control module, an aperture driving circuit, a lens module, a laser module, and a photoelectric sensing module, where the aperture is disposed in the lens module;
the aperture driving circuit is respectively and electrically connected with the control module and the aperture and is used for controlling the opening aperture of the aperture according to the first control information of the control module;
The laser module is electrically connected with the control module and is used for transmitting laser signals to the aperture according to second control information of the control module, the laser signals form modulated laser signals after passing through the aperture, and the modulated laser signals comprise aperture information of the aperture;
The photoelectric sensing module is positioned on the transmission path of the modulated laser signal and is electrically connected with the control module and used for receiving the modulated laser signal, converting the modulated laser signal into a voltage signal and transmitting the voltage signal to the control module;
the control module is used for determining the opening aperture of the diaphragm according to the voltage signal;
optionally, the aperture detection device is further configured to detect a dual-filter switcher;
the dual-filter switcher comprises a first filter and a second filter, and the filtering ranges of the first filter and the second filter are different;
The aperture detection device further comprises a switcher driving circuit which is respectively and electrically connected with the control module and the double-filter switcher and is used for controlling the switching between the first optical filter and the second optical filter according to third control information of the control module;
optionally, the aperture detection device further comprises a switching interface;
The switching interface comprises a first type switching terminal and a second type switching terminal, the first type switching terminal is respectively and electrically connected with the aperture driving circuit and the aperture, and the second type switching terminal is respectively and electrically connected with the switcher driving circuit and the dual-filter switcher;
optionally, the aperture detection device includes a plurality of the switching interfaces;
optionally, the spot size of the laser signal is adjustable;
optionally, the aperture detection device further comprises a sliding rail;
the laser module is arranged on the surface of the sliding rail and can slide along the sliding rail;
Optionally, the aperture detection device further comprises a signal amplification module;
the signal amplification module is respectively and electrically connected with the photoelectric sensing module and the control module and is used for amplifying the voltage signal and then transmitting the amplified voltage signal to the control module;
optionally, the aperture detection device further comprises an aperture resistance detection module;
the aperture resistance detection module is respectively and electrically connected with the control module and the aperture, and is used for detecting resistance information of the aperture according to fourth control information of the control module and feeding back the resistance to the control module;
Optionally, the aperture detection device further comprises a detection prompt module;
the detection prompt module comprises at least two light-emitting elements with different light-emitting colors, and the light-emitting elements are used for emitting light according to the detection result of the aperture detection device;
Optionally, the aperture detection device further comprises a lens base;
The lens module is arranged in the lens base;
optionally, the aperture detection device further comprises a start button;
The starting button is electrically connected with the control module, and the control module is used for controlling the aperture detection device to work according to the pressing state of the starting button;
Optionally, the aperture driving circuit includes a pulse width modulation circuit;
in a second aspect, an embodiment of the present invention provides a method for detecting an aperture of an aperture stop, where the method is applicable to the apparatus for detecting an aperture of any embodiment of the present invention, and the method includes:
transmitting first control information to the diaphragm driving circuit so that the diaphragm driving circuit controls the opening aperture of the diaphragm according to the first control information;
Transmitting second control information to the laser module so that the laser module transmits a laser signal to the aperture according to the second control information, wherein the laser signal forms a modulated laser signal after passing through the aperture, and the modulated laser signal comprises aperture information of the aperture;
receiving a voltage signal transmitted by the photoelectric sensing module, and determining the opening aperture of the diaphragm according to the voltage signal, wherein the voltage signal is obtained by converting the modulated laser signal;
optionally, the aperture detection device is further configured to detect a dual-filter switcher;
the dual-filter switcher comprises a first filter and a second filter, and the filtering ranges of the first filter and the second filter are different;
The aperture detection device further comprises a switcher driving circuit which is respectively and electrically connected with the control module and the double-filter switcher;
The aperture detection method further comprises the following steps:
transmitting third control information to the switcher driving circuit, so that the switcher driving circuit controls switching between the first optical filter and the second optical filter according to the third control information;
optionally, the aperture detection device further comprises an aperture resistance detection module;
Before sending the first control information to the aperture driving circuit, the method further comprises:
Transmitting fourth control information to the aperture resistance detection module so that the aperture resistance detection module detects the resistance of the aperture according to the fourth control information;
receiving resistance information fed back by the aperture resistance detection module, and judging whether the resistance information meets preset resistance requirements or not;
optionally, calibrating the aperture detection device;
Optionally, calibrating the aperture detection device includes:
Presetting a calibration reference value, wherein the calibration reference value comprises a maximum calibration reference value and a minimum calibration reference value;
Receiving voltage signals transmitted by the photoelectric sensing module at preset time intervals, wherein the voltage signals at least comprise all voltage signals in one action cycle of the aperture;
obtaining the maximum voltage signal and the physical address of the maximum voltage signal in all the voltage signals, and obtaining the minimum voltage signal and the physical address of the minimum voltage signal in all the voltage signals;
determining a maximum voltage value according to the maximum voltage signal and the physical address thereof, and determining a minimum voltage value according to the minimum voltage signal and the physical address thereof;
Determining whether the lens meets preset requirements according to the maximum voltage value, the maximum calibration reference value, the minimum voltage value and the minimum calibration reference value;
And when the lens meets the preset requirement, setting a threshold value of the maximum voltage value and the minimum voltage value to obtain a judgment standard of the aperture detection device.
According to the technical scheme provided by the embodiment of the invention, the control module, the aperture driving circuit, the lens module, the laser module and the photoelectric sensing module are arranged, wherein the aperture is arranged in the lens module, the aperture driving circuit is respectively and electrically connected with the control module and the aperture, the laser module is electrically connected with the control module, the photoelectric sensing module is positioned on a transmission path of a modulated laser signal, and the photoelectric sensing module is electrically connected with the control module. The first control information of the control module controls the opening aperture of the diaphragm, the second control information of the control module transmits laser signals to the diaphragm, the laser signals form modulated laser signals after passing through the diaphragm, and the photoelectric sensing module receives the modulated laser signals and converts the modulated laser signals into voltage signals to be transmitted to the control module, so that the opening aperture of the diaphragm is determined. The technical scheme of the embodiment of the invention can realize the accurate detection of the aperture, reduce the aperture detection cost and has high mass production performance and high intelligent degree.
Drawings
Fig. 1 is a schematic structural diagram of an aperture detection device for an aperture according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram showing hardware connection of an aperture detection apparatus for an aperture according to a first embodiment of the present invention;
FIG. 3 is a schematic diagram showing hardware connection of an aperture detection apparatus for an aperture according to a first embodiment of the present invention;
FIG. 4 is a schematic diagram showing hardware connection of an aperture detection device for an aperture according to a first embodiment of the present invention;
FIG. 5 is a flowchart of a method for detecting an aperture of an aperture according to a second embodiment of the present invention;
FIG. 6 is a flowchart of another method for detecting an aperture of an aperture according to a second embodiment of the present invention;
FIG. 7 is a flowchart of a method for detecting an aperture of an aperture according to a second embodiment of the present invention;
FIG. 8 is a flowchart of a method for detecting an aperture of an aperture according to a second embodiment of the present invention;
fig. 9 is a flowchart of a calibration method of an aperture detection device for an aperture according to a second embodiment of the present invention;
Fig. 10 is a flowchart of an embodiment of a method for detecting an aperture of a diaphragm.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be fully described below by way of specific embodiments with reference to the accompanying drawings in the examples of the present invention. It is apparent that the described embodiments are some, but not all, embodiments of the present invention, and that all other embodiments, which a person of ordinary skill in the art would obtain without making inventive efforts, are within the scope of this invention.
Example 1
Fig. 1 is a schematic structural diagram of an aperture detection device for an aperture according to a first embodiment of the present invention, and fig. 2 is a schematic hardware connection diagram of an aperture detection device for another aperture according to a first embodiment of the present invention, where the aperture detection device provided by the embodiment of the present invention is suitable for aperture detection of an aperture. Referring to fig. 1 and 2, the aperture detection device for an aperture provided by the embodiment of the invention includes a control module 101, an aperture driving circuit 102, a lens module 103, a laser module 104 and a photoelectric sensing module 105, wherein an aperture 106 is disposed in the lens module 103, the aperture driving circuit 102 is electrically connected with the control module 101 and the aperture 106 respectively and is used for controlling an opening aperture of the aperture 106 according to first control information of the control module 101, the laser module 104 is electrically connected with the control module 101 and is used for transmitting a laser signal to the aperture 106 according to second control information of the control module 101, the laser signal forms a modulated laser signal after passing through the aperture 106, the modulated laser signal includes aperture information of the aperture, the photoelectric sensing module 105 is located on a transmission path of the modulated laser signal and is electrically connected with the control module 101 and is used for receiving the modulated laser signal and converting the modulated laser signal into a voltage signal and then transmitting the voltage signal to the control module 101, and the control module 101 is used for determining the opening aperture of the aperture 106 according to the voltage signal.
The aperture 106 is a device for controlling the amount of light transmitted through the lens into the photosensitive surface of the body, and the aperture is used for determining the amount of light transmitted through the lens. In the embodiment of the present invention, the aperture 106 is disposed in the lens module 103, and the aperture 106 is a variable-sized clear aperture on the lens module 103, and the aperture diameter can be changed by automatic or manual adjustment, so as to control the light input amount. For example, when the aperture of the diaphragm 106 is maximum, i.e., the diaphragm 106 is fully opened, the amount of light entering is maximum, and when the aperture of the diaphragm 106 is minimum, i.e., the diaphragm 106 is fully closed, the amount of light entering is minimum. The control module 101 includes a first control information output end Y1, the diaphragm driving circuit 102 includes a first control information receiving end X1, the first control information output end Y1 is electrically connected to the first control information receiving end X1, and the diaphragm driving circuit 102 is electrically connected to the diaphragm 106, so that the diaphragm driving circuit 102 receives the first control information of the control module 101 to control the opening aperture of the diaphragm 106.
Further, the control module 101 includes a second information output end Y2, the laser module 104 includes a second information receiving end X2, the second information output end Y2 is electrically connected to the second information receiving end X2, and the laser module 104 emits a laser signal to the aperture 106 according to second control information of the control module 101. The laser signal passes through the aperture 106 to form a modulated laser signal, wherein the modulated laser signal includes aperture information of the aperture 106. The photoelectric sensing module 105 is arranged on a transmission path of the modulated laser signal, wherein the photoelectric module 105 comprises a voltage signal output end YV, the control module 101 comprises a voltage signal receiving end XV, the voltage signal output end YV is electrically connected with the voltage signal receiving end XV, the photoelectric sensing module 105 receives the modulated laser signal and converts the modulated laser signal into a voltage signal, and then the voltage signal is transmitted to the control module 101, and further, the control module 101 determines the opening aperture of the diaphragm 106 according to the received voltage signal.
The control module 101 is a software support of the whole device, and is used for outputting and/or receiving information and/or signals, and performing processing calculation according to the information and/or signals. The embodiment of the invention is not limited by the software implementation mode based on the control module, and can be a singlechip, for example, and the singlechip has the advantages of simple mechanism, high reliability, strong processing capability, high speed and the like.
The aperture driving circuit 102 is configured to drive the aperture 106 to open the aperture, and specifically, the aperture driving circuit 102 controls the opening aperture of the aperture 106 according to the received first control information, where the first control information may be an analog signal or a digital signal, the first control information generated by the control module 101 is output to the aperture driving circuit 102 through the first control information output terminal Y1, and the aperture driving circuit 102 controls the opening aperture of the aperture 106 according to the received first control information.
The lens module 103 refers to an optical device on a video camera, a still camera, or a projector, which is composed of lenses, and the types of lenses are different according to the focal length, aperture, expansion and contraction adjustment, and the like of the lenses, which is not limited in this embodiment.
The laser module 104 is a device for emitting laser light, and can emit a laser signal with pure quality and stable spectrum. Depending on the laser wavelength range generated by the laser module 104, a red laser may be used, where the red light may ensure visibility to the human eye and the photosensitive device has the highest sensitivity. The laser module 104 is used as a light source, and because the penetrating power of the laser signal is strong, the energy is highly concentrated, and the laser signal can be obtained and detected even if the aperture 106 is assembled in the lens module 103. The number of laser modules 104 is not limited in this embodiment, and may be, for example, a plurality of laser modules for simultaneously emitting laser signals to a plurality of apertures. Specifically, the laser module 104 transmits a laser signal to the aperture 106 according to the received second control information, and the laser signal forms a modulated laser signal after passing through the aperture 106, where the modulated laser signal includes aperture information of the aperture. The second control information can be an analog signal or a digital signal, and the modulated laser signals are laser signals with different light entering quantities, wherein the different light entering quantities indicate different aperture sizes of the diaphragms. For example, the larger the aperture of the diaphragm, the more the amount of light is entered, and the smaller the aperture of the diaphragm, the smaller the amount of light is entered.
The photoelectric sensing module 105 is a device for converting an optical signal into an electrical signal, and its working principle is based on the photoelectric effect. The photoelectric effect refers to the phenomenon that electrons of substances absorb photon energy and generate corresponding electric effect when light irradiates on certain substances. The photo-sensor module 105 is based on different photo-elements, and the specific types of the photo-elements are different, for example, the photo-elements may be photo-tubes, photo-multipliers, photoresistors, photodiodes, phototriodes, etc. Specifically, the photoelectric sensing module 105 converts the modulated laser signal into a voltage signal, and outputs the voltage signal to the control module 101 through the voltage signal output end YV, the control module 101 determines the opening aperture of the diaphragm 106 according to the received voltage signal, and the voltage signal at the output end of the photoelectric sensing module 105 is continuously changed when the modulated laser signal is continuously changed. For example, if the voltage signal received by the control module 101 is the maximum voltage signal, the opening aperture of the diaphragm 106 is determined to be the maximum, otherwise, it is indicated that the aperture of the diaphragm 106 is not fully opened.
As shown in fig. 1 and fig. 2, the aperture detection apparatus further includes a protection device 114, a laser module fixing device 115, a device name 118, a chassis structure 119, and the like, so as to ensure that the aperture detection apparatus works normally.
According to the technical scheme provided by the embodiment of the invention, the control module, the aperture driving circuit, the lens module, the laser module and the photoelectric sensing module are arranged, wherein the aperture is arranged in the lens module, the aperture driving circuit is respectively and electrically connected with the control module and the aperture, the laser module is electrically connected with the control module, the photoelectric sensing module is positioned on a transmission path of a modulated laser signal, and the photoelectric sensing module is electrically connected with the control module. The first control information of the control module controls the opening aperture of the diaphragm, the second control information of the control module transmits laser signals to the diaphragm, the laser signals form modulated laser signals after passing through the diaphragm, and the photoelectric sensing module receives the modulated laser signals and converts the modulated laser signals into voltage signals to be transmitted to the control module, so that the opening aperture of the diaphragm is determined. The technical scheme of the embodiment of the invention can realize the accurate detection of the aperture, reduce the aperture detection cost and has high mass production performance and high intelligent degree.
With continued reference to fig. 1 and 2, the aperture detection apparatus may optionally further include a lens mount 117, and the lens module 103 is disposed in the lens mount 117.
The lens mount 117 is used to insert the lens module 103, and the shape of the lens mount 117 is not limited in the embodiments of the present invention, and may be, for example, circular, and may be adapted to various different sizes and types of lens modules 103. The number of lens mounts 117 is not limited in the embodiment of the present invention, and may be plural, for example, for detecting the apertures of plural diaphragms 106 at the same time. Further, by fixing the lens module on the lens base, the aperture detection device can be prevented from moving or tilting the lens module to influence the detection result when detecting the aperture.
With continued reference to fig. 2, the aperture drive circuit may optionally include a pulse width modulation circuit.
The pwm circuit is configured to drive the aperture of the diaphragm 106 to open, and the size of the opening of the aperture is related to the width of the pulse signal output by the pwm circuit. By adopting the pulse width modulation circuit as a driving circuit of the aperture, the simple actuation control mode of the aperture is ensured.
Fig. 3 is a schematic diagram of hardware connection of an aperture detection device for an aperture according to a first embodiment of the present invention. As shown in fig. 3, the aperture detection device is optionally further configured to detect a dual-filter switcher 108, where the dual-filter switcher includes a first filter 1081 and a second filter 1082, and the filter ranges of the first filter 1081 and the second filter 1082 are different, and the aperture detection device further includes a switcher driving circuit 107, where the switcher driving circuit 107 is electrically connected to the control module 101 and the dual-filter switcher 108, respectively, and is configured to control switching between the first filter 1081 and the second filter 1082 according to third control information of the control module 101.
As shown in fig. 3, the dual-filter switcher 108 includes a first filter 1081 and a second filter 1082 having different filter ranges, for switching different scenes. The control module 101 includes a third control information output end Y3, the switcher driving circuit 107 includes a third control information receiving end X3, the third control information output end Y3 and the third control information receiving end X3 are electrically connected, and the switcher driving circuit 107 controls switching between the first optical filter 1081 and the second optical filter 1082 according to the received third control information.
The dual-filter switcher 108 is configured to switch different scenes of the camera, and is composed of two different filters, namely a first filter 1081 and a second filter 1082, wherein the first filter 1081 may be an infrared cut-off filter, and the second filter 1082 may be full-spectrum optical glass. For example, when the light is sufficient in the daytime, the dual-filter switch 108 is switched to the infrared cut-off filter, the camera restores the true color, and when the light is insufficient at night, the dual-filter switch 108 is switched to the full-spectrum optical glass, so that the auxiliary light of the infrared lamp can be sensed at night, the camera can fully utilize all the light, and the whole picture is clear.
The switch driving circuit 107 is configured to control the dual-filter switch 108 to switch different filters according to third control information, where the third control information may be an analog signal or a digital signal, and the embodiment of the invention is not limited.
On the basis of the above embodiment, as shown in fig. 1 and 3, the aperture detection device further includes a changeover interface 109, wherein the changeover interface 109 includes a first-type changeover terminal 1091 and a second-type changeover terminal 1092, the first-type changeover terminal 1091 is electrically connected to the diaphragm driving circuit 102 and the diaphragm 106, and the second-type changeover terminal 1092 is electrically connected to the switcher driving circuit 107 and the dual-filter switcher 108, respectively.
Wherein the transit interface 109 is used to bring in or out signals to facilitate connection to other devices or to provide a signal source. The first type of transit terminal 1091 is used to provide an interface for inserting the diaphragm 106, and the diaphragm driving circuit 102 controls the diaphragm opening aperture by connecting the first type of transit terminal 1091. The second type of switching terminal 1092 is used for providing an interface for inserting the dual-filter switcher 108, and the switcher driving circuit 107 controls the dual-filter switcher 108 to switch different filters by connecting the second type of switching terminal 1092. The wiring complexity of the detected equipment and the aperture detection device is simplified by arranging the switching interface, so that the operation of staff is facilitated.
Optionally, the aperture detection device comprises a plurality of switching interfaces.
Specifically, a plurality of switching interfaces can be used for aperture detection device to detect a plurality of different light ring apertures simultaneously, have reduced light ring detection cost, and the volume production performance is high and intelligent degree is high.
Optionally, the spot size of the laser signal is adjustable.
Wherein, the light spot is a parameter of the laser and refers to the diameter of the laser emitted by the laser. Specifically, the laser module 104 can adjust the diameter of the laser signal emitted to the aperture 106 according to the received second control information, so that the lens for different light paths can be ensured, the photoelectric sensing module 105 can be always kept in the optimal measurement range by adjusting the spot size of the laser, meanwhile, the minimum width of the photoelectric sensing module 105 is ensured to be larger than the beam diameter of the laser signal received by the photoelectric sensing module, and the photoelectric sensing module is ensured to be utilized to the greatest extent.
With continued reference to fig. 1 and 3, the aperture detection apparatus may optionally further include a sliding rail 116, and the laser module 104 is disposed on a surface of the sliding rail 116 and the laser module 104 may slide along the sliding rail 116.
The slide rail 116 is used for detecting the apertures 106 of different lens modules 103, and can adjust the height of the laser module 104. For example, when the lens module 103 is large, the laser module 104 may move upward along the slide rail 116, and when the lens module 103 is small, the laser module 104 may move downward along the slide rail 116. The number of slide rails 116 is not limited in this embodiment, and may be, for example, a plurality of slide rails for simultaneously adjusting the heights of the plurality of laser modules 104. Through setting up laser module on the slide rail, make laser module slide from top to bottom, guarantee that detection device can adapt to the aperture detection of the light ring of different camera lens sizes, promote aperture detection device's application scene and application scope.
Fig. 4 is a schematic diagram of hardware connection of an aperture detection device for an aperture according to a first embodiment of the present invention, as shown in fig. 4, the aperture detection device further includes a signal amplifying module 110, where the signal amplifying module 110 is electrically connected to the photoelectric sensing module 105 and the control module 101, respectively, and is configured to amplify a voltage signal and transmit the amplified voltage signal to the control module 101.
The signal amplifying module 110 is configured to amplify the electrical signal output by the photoelectric sensing module 105, and then transmit the amplified electrical signal to the control module 101. The control module 101 automatically reads the amplified voltage signal through the voltage signal receiving terminal XV, and performs control processing accordingly. The signal amplification module is used for amplifying the electric signal output by the photoelectric sensing module, so that the detection result can be ensured to be more accurate.
As further shown in fig. 4, the aperture detection device further includes an aperture resistance detection module 111, where the aperture resistance detection module 111 is electrically connected to the control module 101 and the aperture 106, respectively, and is configured to detect resistance information of the aperture 106 according to fourth control information of the control module 101, and feed back the resistance to the control module 101.
Specifically, the aperture resistance detection module 111 includes a fourth control information receiving end X4 and a resistance value output end YR, the control module 101 includes a fourth control information output end Y4 and a resistance value receiving end XR, the fourth control information receiving end X4 is electrically connected to the fourth control information output end Y4, and the resistance value output end YR is electrically connected to the resistance value receiving end XR. In this way, the control module 101 outputs the fourth control information to the diaphragm resistance detection module 111 through the fourth control information output terminal Y4, and the diaphragm resistance detection module 111 detects the resistance of the diaphragm 106 according to the received fourth control information and outputs the resistance value to the control module 101 through the resistance output terminal YR.
The aperture resistance detection module 111 is configured to detect a resistance value of the aperture 106, and determine a speed of opening the aperture of the aperture 106 according to the resistance value of the aperture 106, so that whether the aperture is good or not can be determined according to the resistance value of the aperture 106, and high accuracy of subsequent aperture detection is ensured.
Referring to fig. 1 and 4, the aperture detection device further includes a detection prompt module 112, where the detection prompt module 112 includes at least two light emitting elements with different light emitting colors, and the light emitting elements are configured to emit light according to a detection result of the aperture detection device.
The detection prompt module 112 is configured to perform light emission prompt according to a detection result of the aperture detection device, where two light emitting elements with different light emission colors respectively represent two different detection results, for example, may be two different light emitting elements of red and green, green light represents a good detection result, and red light represents a failure detection result. The specific installation location of the detection prompt module 112 is not limited in the embodiment of the present invention, and may be, for example, a side beside the adapter interface. Through setting up detection prompt module, make the staff more audio-visual confirm whether the light ring is good, improve detection efficiency.
As further shown in fig. 1 and 4, the aperture detection device further includes a start button 113, where the start button 113 is electrically connected to the control module 101, and the control module 101 is configured to control the aperture detection device to operate according to a pressed state of the start button 113.
The starting button 113 is used to control the aperture detection device to work, and the specific installation position is not limited in the embodiment of the present invention, and may be, for example, a side beside the detection prompt module 112. The number of the start buttons is not limited in the embodiment of the present invention, and for example, there may be one start button 113 for each detected position of the diaphragm 106. Specifically, the start button 113 is used for controlling different circuits, and pressing the start button 113 controls the aperture resistance detection module 111 to detect the resistance value of the aperture 106, and when the resistance value is detected to be qualified, the laser is turned on and the aperture detection link is automatically performed.
Example two
Fig. 5 is a flowchart of an aperture detection method for an aperture, which is provided in the second embodiment of the present invention, and is suitable for the aperture detection device for an aperture described in the foregoing embodiment, and is specifically executed by the aperture detection device in the first embodiment of the present invention. As shown in fig. 5, the specific steps are as follows:
S510, sending first control information to the diaphragm driving circuit so that the diaphragm driving circuit controls the opening aperture of the diaphragm according to the first control information.
Specifically, the control module sends first control information to the diaphragm driving circuit through the first control information output end, and the diaphragm driving circuit controls the opening aperture of the diaphragm according to the received first control information.
S520, sending second control information to the laser module, so that the laser module sends laser signals to the aperture according to the second control information, the laser signals form modulated laser signals after passing through the aperture, and the modulated laser signals comprise aperture information of the aperture;
Specifically, the control module sends second control information to the laser module through the second control information output end, the laser module sends laser signals to the aperture according to the received second control information, the aperture is different according to the opening aperture, the obtained light inlet amount is different, the laser signals can form modulated laser signals after passing through the aperture, and the modulated laser signals can reflect the aperture size of the aperture.
And S530, receiving a voltage signal transmitted by the photoelectric sensing module, determining the opening aperture of the diaphragm according to the voltage signal, and converting the voltage signal by modulating a laser signal.
Specifically, the control module automatically reads the voltage signal transmitted by the photoelectric sensing module through the voltage signal receiving end, the voltage signal is obtained by converting the photoelectric sensing module according to the changed modulated laser signal, and the voltage signal received by the control module is changed and is judged.
In summary, by adopting the technical scheme, different control information is respectively sent to the aperture driving circuit and the laser module, so that different modulated laser signals can be always received in the aperture actuating process, the information of the opening aperture size of the aperture is further obtained according to the modulated laser signals, the detection of the opening aperture of the aperture is realized, and the detection mode is simple and efficient.
Fig. 6 is a flowchart of another method for detecting an aperture of an aperture according to a second embodiment of the present invention, as shown in fig. 6, mainly including the following steps:
And S610, transmitting third control information to the switcher driving circuit so that the switcher driving circuit controls switching between the first optical filter and the second optical filter according to the third control information.
Specifically, the control module sends third control information to the switcher driving circuit through the third control information output end, and the switcher driving circuit controls switching between the first optical filter and the second optical filter according to the received third control information, so that detection of the double-optical-filter switcher is realized.
S620, sending first control information to the diaphragm driving circuit so that the diaphragm driving circuit controls the opening aperture of the diaphragm according to the first control information.
S630, sending second control information to the laser module, so that the laser module sends laser signals to the aperture according to the second control information, the laser signals form modulated laser signals after passing through the aperture, and the modulated laser signals comprise aperture information of the aperture.
S640, receiving a voltage signal transmitted by the photoelectric sensing module, determining the opening aperture of the diaphragm according to the voltage signal, and converting the voltage signal by modulating a laser signal.
It should be noted that, in the above embodiment, the dual-filter switcher may be detected before the aperture detection, and after the detection is completed, the dual-filter switcher is automatically switched to a white glass sheet state, and then the aperture detection is performed.
In summary, according to the technical scheme provided by the embodiment of the invention, the third control information is additionally sent to the switcher driving circuit to control the switching between the first optical filter and the second optical filter, so that the detection of the dual-optical-filter switcher is ensured.
Fig. 7 is a flowchart of another method for detecting an aperture of an aperture according to a second embodiment of the present invention, as shown in fig. 7, mainly including the following steps:
And S710, sending fourth control information to the aperture resistance detection module so that the aperture resistance detection module detects the resistance of the aperture according to the fourth control information.
Specifically, the control module sends fourth control information to the aperture resistance detection module through the fourth control information output end, and the aperture resistance detection module detects the resistance of the aperture according to the fourth control information and feeds the resistance back to the control module through the resistance value output end.
S720, receiving the resistance information fed back by the aperture resistance detection module, and judging whether the resistance information meets the preset resistance requirement.
The preset resistor is a standard threshold value set in the control module, and the embodiment of the invention is not limited for specific preset resistor values.
Specifically, the control module obtains the resistance value of the aperture detected by the aperture resistance detection module through the resistance value receiving end, judges the resistance value of the aperture, and indicates that the aperture is good if the resistance value of the aperture is within the range of a preset resistance value, or indicates that the aperture is unqualified if the resistance value of the aperture is not within the range of the preset resistance value.
And S730, sending first control information to the diaphragm driving circuit so that the diaphragm driving circuit controls the opening aperture of the diaphragm according to the first control information.
And S740, sending second control information to the laser module so that the laser module emits laser signals to the aperture according to the second control information, wherein the laser signals form modulated laser signals after passing through the aperture, and the modulated laser signals comprise aperture information of the aperture.
S750, receiving a voltage signal transmitted by the photoelectric sensing module, determining the opening aperture of the diaphragm according to the voltage signal, and converting the voltage signal by modulating a laser signal.
In summary, by detecting the resistance of the aperture before the actual aperture detection, the aperture detection is continued under the condition that the resistance is detected to be qualified before, the aperture detection is prevented from being affected by the unqualified aperture resistance, and the aperture detection accuracy is improved.
Fig. 8 is a flowchart of a method for detecting an aperture of a diaphragm according to a second embodiment of the present invention, as shown in fig. 8, mainly including the following steps:
S810, calibrating the aperture detection device.
Specifically, long presses of the start button 113 may calibrate the aperture detection device, for example, by pressing the start button 113 for more than half a second. Further, the calibration of the aperture detection device can be that an intact lens module is adopted to detect the aperture of the aperture, all parameters in the control module are calibrated according to the detection result, and other apertures which are not detected are detected according to the calibrated parameters, so that the preset parameters in the aperture detection device are ensured to be correct and effective, and the accuracy of the subsequent aperture detection is ensured. It should be noted that each type of lens only needs to be calibrated once before detection, so that the number of times of calibration before detection of the same lens is reduced, and the detection efficiency is improved.
S820, sending first control information to the diaphragm driving circuit so that the diaphragm driving circuit controls the opening aperture of the diaphragm according to the first control information.
And S830, sending second control information to the laser module so that the laser module emits laser signals to the aperture according to the second control information, wherein the laser signals form modulated laser signals after passing through the aperture, and the modulated laser signals comprise aperture information of the aperture.
S840, receiving the voltage signal transmitted by the photoelectric sensing module, determining the opening aperture of the diaphragm according to the voltage signal, and converting the voltage signal by modulating the laser signal.
In summary, the whole aperture detection device is calibrated before aperture detection, so that the preset parameters in the aperture detection device are ensured to be correct and effective, and the subsequent aperture detection is ensured to be accurate.
It should be noted that the three embodiments shown in fig. 6, 7 and 8 may be combined with each other, for example, the technical solution shown in fig. 6 and the technical solution shown in fig. 7 are combined, that is, the optical filter is switched and the aperture resistance is detected before the actual aperture detection, and the technical solution shown in fig. 6, the technical solution shown in fig. 7 and the technical solution shown in fig. 8 are combined, that is, the optical filter is switched, the aperture resistance is detected and the aperture detection device is calibrated before the actual aperture detection. The embodiment of the invention does not limit the specific combination mode, and the scheme of combination conflict does not exist, so long as the scheme belongs to the protection scope of the embodiment of the invention.
On the basis of the above embodiment, fig. 9 is a flowchart of a calibration method of an aperture detection device for an aperture, which is provided in the second embodiment of the present invention, as shown in fig. 9, and specifically includes the following steps:
S910, presetting a calibration reference value, wherein the calibration reference value comprises a maximum calibration reference value and a minimum calibration reference value.
The calibration reference value refers to a determination reference value set by the control module according to the aperture of the well-detected lens module, and includes a maximum calibration reference value and a minimum calibration reference value. In order to ensure that the aperture detection device can be adapted to all lens modules, the preset calibration reference value does not select a limit value, for example a median value.
S920, receiving voltage signals transmitted by the photoelectric sensing module every preset time, wherein the voltage signals at least comprise all voltage signals in one actuation period of the aperture.
The preset time is the time set in the control module, and the specific time is not limited in the embodiment of the present invention, and may be, for example, 10ms. The embodiment of the invention is not limited to the data transmission module adopted by the control module for receiving the voltage signal transmitted by the photoelectric sensing module, for example, direct memory access (Direct Memory Access, DMA) can be adopted for data transmission, and the data transmission speed can be improved.
The actuation period refers to the time taken for the diaphragm to open to close, and the specific time is not limited in the embodiment of the present invention, and may be, for example, 4s.
Specifically, the control module receives the voltage signals transmitted by the photoelectric sensing module every preset time, and in order to ensure that all the voltage signals received by the control module at least comprise all the voltage signals in one action cycle of the aperture, enough voltage signals need to be continuously received. For example, if the preset time is 10ms and the actuation period of the aperture is 4s, the voltage signals received by the control module are at least 400, for example 500, so as to ensure that all the voltage signals within one actuation period of the aperture are included.
S930, acquiring the maximum voltage signal and the physical address of the maximum voltage signal, and acquiring the minimum voltage signal and the physical address of the minimum voltage signal.
Specifically, the control module further processes according to all the received voltage signals to obtain a maximum voltage signal and a minimum voltage signal in all the voltage signals, and physical addresses corresponding to the maximum voltage signal and the minimum voltage signal respectively, and according to the physical addresses, other voltage signals adjacent to the maximum voltage signal and the minimum voltage signal can be obtained.
S940, determining a maximum voltage value according to the maximum voltage signal and the physical address thereof, and determining a minimum voltage value according to the minimum voltage signal and the physical address thereof.
Specifically, a plurality of data adjacent to the maximum voltage signal are obtained according to the maximum voltage signal and the physical address thereof, the difference value of the adjacent data is obtained by calculation, the difference value is further obtained to be smaller than the set value in the control module, and then the average value of the adjacent data is calculated to obtain the maximum voltage value. Similarly, the minimum voltage value can be obtained according to the minimum voltage signal and the physical address thereof. The number of data adjacent to the maximum voltage signal or the minimum voltage signal is not limited in the embodiment of the present invention, for example, may be 10, and the internal set value of the control module is not particularly limited, for example, may be 4.
S950, determining whether the calibration result meets the preset requirement according to the maximum voltage value, the maximum calibration reference value, the minimum voltage value and the minimum calibration reference value.
Specifically, comparing the maximum voltage value and the minimum voltage value obtained in the previous step with a preset maximum calibration reference value and a preset minimum calibration reference value, if the maximum voltage value and the minimum voltage value are respectively smaller than and larger than the maximum calibration reference value and the minimum calibration reference value, considering that the maximum voltage value and the minimum voltage value meet the set conditions, otherwise, re-calibration is needed.
S960, when the lens meets the preset requirement, setting the maximum voltage value and the minimum voltage value to obtain the judgment standard threshold of the aperture detection device.
Specifically, a maximum voltage value and a minimum voltage value meeting preset requirements are obtained according to the judgment result of the previous step, and are set as judgment standard thresholds of the aperture detection device, so that when detecting the aperture which is not detected, the judgment standard of the control module is the threshold.
Fig. 10 is a flowchart showing an implementation of a method for detecting an aperture of an aperture, which is provided in the second embodiment of the present invention, and will be described with reference to an example, and it should be noted that, with reference to fig. 10, after an item is detected to be qualified, the next detection item will be automatically jumped, and the detection sequence is not limited to this embodiment, and fig. 10 is only one example. Mainly comprises the following steps:
s1010, pressing a start button to start detection.
S1020, the aperture resistance detection module detects the resistance of the aperture, and the specific steps refer to step S710 and step S720 in FIG. 7.
S1030, the control module judges whether the resistance of the aperture meets the preset resistance requirement. Specifically, if the resistance information meets the preset resistance requirement, the next operation is performed, otherwise, the luminous element in the detection prompt module lights up a red light, and the detection is finished.
S1040, automatically detecting the double-filter switcher and judging whether the detection result is good.
Specifically, the double-filter switcher has good detection result, then the next operation is carried out, otherwise, the light-emitting element in the detection prompt module lights up the red light, and the detection is finished.
S1050, the dual-filter switcher automatically switches to a white glass sheet state, and aperture detection of the diaphragm is automatically started, and the specific steps are shown in step S510 and step S520 in FIG. 5.
S1060, the control module judges whether the opening aperture of the diaphragm meets the requirement according to the voltage signal transmitted by the photoelectric sensing module.
Specifically, if the maximum value and the minimum value of the voltage signal meet the judging standard threshold, the aperture is determined to be good, the light-emitting element in the detection prompt module lights up green light, otherwise, the aperture is determined to be unqualified, and the light-emitting element in the detection prompt module lights up red light.
The aperture detection method of the aperture, provided by the embodiment of the invention, comprises the steps that a control module sends first control information to an aperture driving circuit to enable the aperture driving circuit to control the opening aperture of the aperture, sends second control information to a laser module to enable the laser module to emit laser signals to the aperture, the laser signals obtained by the aperture form modulated laser signals, wherein the modulated laser signals comprise aperture information of the aperture, a photoelectric sensing module converts the modulated laser signals into voltage signals, and a control module determines the opening aperture of the aperture according to the received voltage signals. Therefore, accurate detection of a plurality of diaphragm apertures is realized, manpower is saved, detection cost is reduced, and meanwhile, mass production performance and intelligent degree are high.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (17)
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| JPH0719821A (en) * | 1993-07-01 | 1995-01-20 | Sumitomo Electric Ind Ltd | Method and device for optical measurement of dimensions |
| CN1123405A (en) * | 1995-06-02 | 1996-05-29 | 亚中仪器有限公司 | Method for measuring size of object and apparatus thereof |
| US5761336A (en) * | 1996-01-16 | 1998-06-02 | Ultrapointe Corporation | Aperture optimization method providing improved defect detection and characterization |
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| JP2007205976A (en) * | 2006-02-03 | 2007-08-16 | Toshiba Corp | Laser distance measuring device |
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| CN110487514B (en) * | 2019-08-23 | 2024-05-24 | 江苏和正特种装备有限公司 | Optical axis parallelism calibration system of common-aperture multispectral photoelectric detection system |
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