CN113747009A - Lifting camera system and lifting camera device - Google Patents
Lifting camera system and lifting camera device Download PDFInfo
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- CN113747009A CN113747009A CN202110962722.5A CN202110962722A CN113747009A CN 113747009 A CN113747009 A CN 113747009A CN 202110962722 A CN202110962722 A CN 202110962722A CN 113747009 A CN113747009 A CN 113747009A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/695—Control of camera direction for changing a field of view, e.g. pan, tilt or based on tracking of objects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
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- Power Engineering (AREA)
- Studio Devices (AREA)
Abstract
The invention discloses a lifting camera system and a lifting camera device, wherein the lifting camera system comprises a camera, a lifting execution mechanism for driving the camera to move, and a lifting driving unit for adjusting the movement direction of the lifting execution mechanism, and further comprises: the lifting driving unit adjusts the movement direction of the lifting actuating mechanism according to a detection signal of the image processing unit, and then adjusts the movement direction of the camera. Compared with the prior art, the automatic lifting device can realize the automatic lifting of the camera, and has the advantages of simple circuit structure and lower cost.
Description
Technical Field
The invention relates to the technical field of computer vision, in particular to a lifting camera system and a lifting camera device.
Background
With the rise of artificial intelligence, all walks of life pay attention to the application of artificial intelligence very much. In one of the fields of the television market, particularly in the fire explosion field, the whole television industry has the advantages that not only are numerous new brands across the world, but also the traditional television huge masses launch new products in many times, and the strong strength is revealed. For example, many enterprises have already made articles on the camera of the television, and a brand-new Q60 true panoramic sound smart television with an AI camera function is provided by creativity, which is not a photographed video, and more importantly, the television has a visual perception capability, so that a wider imagination space is provided for the smart television application scene. For convenience of customers' experience, the AI camera needs to be automatically closed and lowered to reset when the user does not use, so as to protect privacy, and when the camera is opened, the camera needs to be lifted to facilitate the photographing function.
In the aspect of realizing the lifting of the camera, the most common realization is that a stepping motor is adopted for driving, the lifting and the falling of the camera are realized by combining the matching between a screw rod and a nut, the operation of the stepping motor is realized by outputting a pulse signal and a direction signal through a controller, and a pure hardware circuit or a software program is required to be arranged in advance to generate the two control signals, so that the camera is high in control cost and not beneficial to market development.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a lifting camera system and a lifting camera device.
The invention has the technical scheme that a lifting camera system is provided, which comprises a camera, a lifting actuating mechanism for driving the camera to move, and a lifting driving unit for adjusting the movement direction of the lifting actuating mechanism, and further comprises: and the lifting driving unit adjusts the movement direction of the camera according to a detection signal of the image processing unit.
Further, when the image processing unit detects that the camera works, the image processing unit sends out a first detection signal, and the lifting driving unit controls the lifting execution mechanism to drive the camera to move upwards;
when the image processing unit detects that the camera does not work, the image processing unit sends a second detection signal, and the lifting driving unit controls the lifting actuating mechanism to drive the camera to move downwards.
Further, the lift camera system still include with first detection switch and the second detection switch that image processing unit connects, first detection switch locates second detection switch top, just the camera locate first detection switch with between the second detection switch, when the camera moves to first detection switch or second detection switch department, first detection switch or second detection switch trigger and control image processing unit sends reset signal for lift drive unit, lift drive unit control lift actuating mechanism stop motion makes the camera maintain first detection switch or second detection switch department.
Further, still including connecting the first voltage reduction unit between power and image processing unit, first voltage reduction unit include with first voltage output end, second voltage output end and the third voltage output end that image processing unit connects, first voltage output end, second voltage output end and the different voltage signal of third voltage output end output give image processing unit, just the voltage of first voltage output end output is higher than second voltage output end, the voltage of second voltage output end output is higher than third voltage output end.
Further, still including connect in third voltage output end with second voltage reduction unit and third voltage reduction unit between the camera, second voltage output end still is connected to the camera, second voltage output end, second voltage reduction unit, third voltage reduction unit output different voltage signal respectively give the camera, just the voltage that second voltage reduction unit output is less than second voltage output end, the voltage that second voltage output end output is less than third voltage reduction unit.
Further, the lifting execution mechanism is a direct current motor with an output shaft connected with the camera, and when the lifting driving unit receives a first detection signal, the lifting driving unit controls the direct current motor to rotate positively, so that the camera is driven to move upwards;
when the lifting driving unit receives a second detection signal, the lifting driving unit controls the straight line
The current motor is reversed to drive the camera to move downwards;
and when the lifting driving unit receives a reset signal, the lifting driving unit controls the direct current motor to stop moving.
Further, the first voltage reduction unit is a three-channel synchronous voltage reduction converter, and includes a first voltage output terminal, a second voltage output terminal and a third voltage output terminal connected to the first voltage output terminal, where the first voltage output terminal includes a resistor R10, a resistor R31, an inductor L1, a capacitor C63, a capacitor C64 and a capacitor C65, a conversion pin SW1 of the three-channel synchronous voltage reduction converter is connected in series with the inductor L1 to output a first voltage, a feedback pin FB1 is connected in series with the resistor R31 to be grounded, and the capacitor C63, the capacitor C64, the capacitor C65 and the resistor R10 are respectively connected in parallel between the conversion pin SW1 and the feedback pin FB 1;
the second voltage output end comprises an inductor L2, a capacitor C60, a capacitor C61, a capacitor C62, a resistor R32, a resistor R33 and a resistor R34, a conversion pin SW2 of the three-channel synchronous buck converter is sequentially connected with the inductor L2 and the resistor R34 in series and then outputs a second voltage, a voltage input with the same size as the second voltage is connected between the inductor L2 and the resistor R34, a feedback pin FB2 of the three-channel synchronous buck converter is connected with the resistor R33 in series and then is grounded, and the capacitor C60, the capacitor C61, the capacitor C62 and the resistor R32 are respectively connected between the conversion pin SW2 and the feedback pin FB2 in parallel;
the third voltage output end comprises an inductor L3, a resistor R16, a resistor R35, a capacitor C57, a capacitor C58 and a capacitor C59, a conversion pin SW3 of the three-channel synchronous buck converter is connected with the inductor L3 in series and then outputs a third voltage, a feedback pin FB3 is connected with a resistor R16 in series and then is grounded, and the resistor R35, the capacitor C57, the capacitor C58 and the capacitor C59 are connected between the conversion pin SW3 and the feedback pin FB3 in parallel respectively.
Further, first inductive switch and second inductive switch are micro-gap switch, direct current motor's output shaft passes through rack and transmission band and assembles the support piece of camera is connected, works as when the camera moves to first inductive switch or second inductive switch department, support piece with micro-gap switch's pin is connected, makes micro-gap switch's movable contact and stationary contact switch on, and then control the image processing unit sends reset signal.
The invention further provides a lifting camera device, and the lifting camera device adopts the lifting camera system.
Further, the lift camera device includes: the main control board and with camera, lift actuating mechanism, first detection switch and the second detection switch that the main control board is connected, the main control board is integrated with lift drive unit, image processing unit, first voltage reduction unit, second voltage reduction unit and third voltage reduction unit, the main control board include with the camera is connected and is given its output CAM1 of supplying power, with lift actuating mechanism connects and is used for controlling direct current motor corotation and the output OUT1 and the output OUT2 of reversal, and with output GPI1 and output GPI2 that first detection switch and second detection switch are connected.
Compared with the prior art, the invention has at least the following beneficial effects:
1. the automatic lifting function of the camera is realized, the camera can be lifted when in use and can be lowered when not in use, the design is more humanized, and the user experience is improved.
2. The circuit structure of the invention is simple, the driving mechanism of the camera is simple, and the cost is low.
3. The invention can realize the lifting function of the camera by connecting the main control board with other components, and the device is simple and easy to assemble and convenient for users to use.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic frame diagram of a lift camera system;
FIG. 2 is a schematic diagram of the connection of the first voltage reduction unit;
FIG. 3 is a schematic diagram of the connection of a second voltage reduction unit;
FIG. 4 is a schematic diagram of the connection of a third voltage reduction unit;
FIG. 5 is a schematic diagram of the connection of the elevation driving unit;
FIG. 6 is a schematic connection diagram of a first detection switch;
FIG. 7 is a schematic connection diagram of a second detection switch;
fig. 8 is a schematic connection diagram of the elevating camera device.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Thus, a feature indicated in this specification will serve to explain one of the features of one embodiment of the invention, and does not imply that every embodiment of the invention must have the stated feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.
The principles and construction of the present invention will be described in detail below with reference to the drawings and examples.
Referring to fig. 1, the present invention provides a lifting camera system, which includes a camera 20, a lifting actuator 30, a lifting driving unit 15, an image processing unit 14, a first voltage dropping unit 11, a second voltage dropping unit 12, a third voltage dropping unit 13, a first detection switch 40, and a second detection switch 50, wherein the lifting actuator 30 is configured to drive the camera 20 to move, and the lifting driving unit 15 is configured to adjust a moving direction of the lifting actuator 30, so as to change the moving direction of the camera 20. The elevation driving unit 15 is further connected to the image processing unit 14, the image processing unit 14 can detect the working state of the camera 20 and send a detection signal to the elevation driving unit 15, and the elevation driving unit 15 adjusts the moving direction of the camera 20 according to the detection signal.
Specifically, when the image processing unit 14 detects that the camera 20 works (fig.), it can send a first detection signal to the lifting driving unit 15, and the lifting driving unit 15 controls the lifting executing mechanism 30 to move upward after receiving the first detection signal, so as to drive the camera 20 to move upward. When the image processing unit 14 detects that the camera 20 is not in operation, the image processing unit 14 can send a second detection signal to the lifting driving unit 15, and when the lifting driving unit 15 receives the second detection signal, the lifting executing mechanism 30 is controlled to move downwards, so as to drive the camera 20 to move downwards.
The idea of the present invention is that the image processing unit 14, the lifting driving unit 15 and the lifting actuator 30 are matched to detect the working state of the camera 20 and adjust the upward movement or the downward movement of the camera 20 according to whether the camera is working or not.
Further, when the lifting camera system works, the height of the camera 20 which is lifted or lowered needs to meet the system requirement, and the camera cannot be lifted or lowered without limit. In order to determine the height of the camera 20 ascending or descending, the present invention is further provided with a first detection switch 40 and a second detection switch 50, which are arranged on the motion track of the camera 20 according to the user requirement, so that the camera 20 can stop moving when moving to the first detection switch 40 or the second detection switch 50, and thus, the camera can be maintained at the current position. Wherein, first detection switch 40 sets up in the top of second detection switch 50, and makes camera 20 be located between first detection switch 40 and the second detection switch 50, can conflict first detection switch 40 when making camera 20 upward movement, can conflict second detection switch 50 when the downstream to the maximum limit that camera 20 confirmed rises and descends satisfies the system demand.
Specifically, when the camera 20 moves upward to the first detection switch 40, the first detection switch 40 is triggered and controls the image processing unit 14 to send a reset signal, the reset signal can pull down the first detection signal sent by the image processing unit 14, the lifting driving unit 15 does not receive the first detection signal and does not control the movement of the lifting actuator 30, and the camera 20 is not driven by external force after the lifting actuator 30 stops and will stop at the first detection switch 40. When the camera 20 moves down to the second detection switch 50, the second detection switch 50 is triggered and controls the image processing unit 14 to send a reset signal, the reset signal pulls down the second detection signal sent by the image processing unit 14, the lifting driving unit 15 no longer receives the second detection signal, the lifting actuator 30 stops moving, and the camera 20 is maintained at the second detection switch 50.
Further, referring to fig. 1, an output port GPO-1 of the image processing unit 14 is connected to an input port IN1 of the elevation driving unit 15 for outputting a first detection signal to the elevation driving unit 15, and an output port GPO-2 of the image processing unit 14 is connected to an input port IN2 of the elevation driving unit 15 for outputting a second detection signal to the elevation driving unit 15. The lifting actuator 30 is a dc motor, and is connected to the output port OUT1 and the output port OUT2 of the lifting drive unit 15, when the output port OUT1 outputs a high level, the dc motor rotates forward to drive the camera to move upward, and when the output port OUT2 outputs a high level, the dc motor rotates backward to drive the camera to move downward. The first detection switch 40 is connected to the input port GPI-1 of the image processing unit 14, and the output port GPO-1 thereof outputs a low level when the input port GPI-1 receives a high level, and the second detection switch 50 is connected to the input port GPI-2 of the image processing unit 14, and the output port GPO-2 thereof outputs a low level when the input port GPI-2 receives a high level.
Accordingly, the operation principle of the present invention is that the image processing unit 14 is configured to detect the operation state of the camera 20, when the camera 20 operates, the output port GPO-1 of the image processing unit 14 outputs a high level signal as a first detection signal to the input port IN1 of the up-down driving unit 15, the input port IN1 of the up-down driving unit 15 receives the high level signal, and then the corresponding output port OUT1 outputs a high level signal, so as to control the direct current motor to rotate forward, so that the camera 20 moves upward, when the camera 20 moves to the first detection switch 40, the first detection switch 40 is triggered to be turned on, and then the high level signal is sent to the input port GPI-1 of the image processing unit 14, so that the high level signal output by the corresponding output port GPO-1 is pulled low, which is equivalent to outputting a reset signal to the input port IN1 of the up-down driving unit 15, the corresponding output port OUT1 outputs a low signal and the dc motor stops moving, so that the camera 20 is maintained at the first detection switch 40.
When the camera 20 does not operate, the output port GPO-2 of the image processing unit 14 outputs a high level signal as the second detection signal to the input port IN2 of the elevation driving unit 15, and after the input port IN2 of the elevation driving unit 15 receives the high level signal, the corresponding output port OUT2 outputs the high level signal, so as to control the direct current motor to rotate reversely, so that the camera 20 moves downward. When the camera 20 moves to the second detection switch 50, the second detection switch 50 is triggered to be turned on, and then sends a high level signal to the input port GPI-2 of the image processing unit 14, so that the high level signal output by the corresponding output port GPO-2 is pulled low, which is equivalent to outputting a reset signal to the input port IN2 of the lifting driving unit 15, and thus the output port OUT2 outputs a low level signal, the dc motor stops moving, and the camera 20 is located at the second detection switch 50.
Through the above arrangement mode, the camera 20 can be maintained at the first detection switch 40 during operation, so that the camera can be conveniently shot, the camera 20 is maintained at the second detection switch 50 during the non-operation, the privacy is protected, and the design is more humanized.
Further, the image processing unit 14 requires three voltage inputs of different levels during operation, and therefore, the present invention is further provided with a first voltage-dropping unit 11 having three voltage outputs, which is connected between the power supply and the image processing unit 14 and supplies three different voltage signals to the image processing unit 14 through the three voltage outputs. As can be seen from fig. 1, the image processing unit 14 needs to receive three voltage signals of different levels, namely 3.3V, 1.8V and 0.92V, which are respectively output through the first voltage output terminal, the second voltage output terminal and the third voltage output terminal.
Specifically, referring to fig. 2, the first buck unit 11 includes an efficient three-channel synchronous buck converter, which can operate in an automatic mode (PWM/PFM). The input voltage range is 2.7-6V, and the output voltage can be as low as 0.6V. Duty cycle operates in Dropout, high efficiency svnchrontime mode operation; the input voltage and the internal soft start of the thermal fault protection are fixed at the switching frequency of 2.3MHz for overcurrent protection. In the present embodiment, the input voltage is 5V, and the output voltages are 3.3V, 1.8V, and 0.92V. Under very light loads, buck enters PFM mode, reducing the switching frequency and supply current to maintain high efficiency. Each buck regulator is dedicated to efficient operation over the entire load range. At a typical switching frequency of 2.3MHz, the external LC filter can be small, but the output voltage ripple is very low. The internal compensation stabilization is efficient at low voltage and main output current with the proposed external inductor and capacitor synchronous rectification. Each buck has an internal soft start circuit to limit inrush current at start-up, which gradually brings the converter to a stable operating point, thereby reducing start-up stress and shock. In the PWM mode, current limiting is achieved by using an internal comparator that trips at the current level based on the buck capability. If the output shorts to ground, the device will enter a time limited current mode in which fet will last longer until the inductor current drops below a low threshold, ensuring that the inductor current has more time to decay, thereby preventing uncontrolled voltage locking.
The first voltage output end of the three-channel synchronous buck converter comprises a resistor R10, a resistor R31, an inductor L1, a capacitor C63, a capacitor C64 and a capacitor C65, a conversion pin SW1 of the three-channel synchronous buck converter is connected with the inductor L1 in series and then outputs a first voltage (3.3V), a feedback pin FB1 is connected with a resistor R31 in series and then is grounded, the capacitor C63, the capacitor C64, the capacitor C65 and the resistor R10 are respectively connected between the conversion pin SW1 and the feedback pin FB1 in parallel, the three-channel synchronous buck converter forms a filter circuit through inductors and capacitors, and the voltage output by the conversion pin SW1 is filtered and then outputs the first voltage;
the second voltage output end comprises an inductor L2, a capacitor C60, a capacitor C61, a capacitor C62, a resistor R32, a resistor R33 and a resistor R34, a conversion pin SW2 of the three-channel synchronous buck converter is sequentially connected with the inductor L2 and the resistor R34 in series and then outputs a second voltage (1.8V), a voltage input with the same size as the second voltage is connected between the inductor L2 and the resistor R34, a feedback pin FB2 of the three-channel synchronous buck converter is connected with the resistor R33 in series and then is grounded, the capacitor C60, the capacitor C61, the capacitor C62 and the resistor R32 are respectively connected between the conversion pin SW2 and the feedback pin FB2 in parallel, the voltage input is used for pulling up, and a filter circuit is formed by the inductor and the capacitor to output the second voltage;
the third voltage output end comprises an inductor L3, a resistor R16, a resistor R35, a capacitor C57, a capacitor C58 and a capacitor C59, a conversion pin SW3 of the three-channel synchronous buck converter is connected with the inductor L3 in series and then outputs a third voltage (0.92V), a feedback pin FB3 is connected with a resistor R16 in series and then is grounded, the resistor R35, the capacitor C57, the capacitor C58 and the capacitor C59 are respectively connected between the conversion pin SW3 and the feedback pin FB3 in parallel, and the third voltage is output after the filter circuit is formed by the inductor and the capacitor.
Further, the three-channel synchronous buck converter further has three input terminals VIN1, VIN2 and VIN3, wherein the input terminal VIN1 is connected in series with a capacitor C52 and then grounded, the input terminal VIN2 is connected in series with a capacitor C54 and then grounded, the input terminal VIN3 is connected in series with a capacitor C55 and then grounded, and the power source VBUS is respectively connected between the input terminal VIN1 and the capacitor C53, between the input terminal VIN2 and the capacitor C54, and between the input terminal VIN3 and the capacitor C55 to respectively provide voltage input to the three input terminals. The power supply VBUS is further connected in series with a resistor R17 and then respectively connected to enable pins EN1, EN2 and EN3 of the three-channel synchronous buck converter.
Correspondingly, the camera 20 also needs to access three different level voltages when operating, and the voltage of the three different level voltages is between 1.2V and 2.8V, so that the camera 20 cannot be directly connected with the first voltage-reducing unit 11. In order to supply power to the camera 20, the invention is further provided with a second voltage reduction unit 12 and a third voltage reduction unit 13, which are matched with a second voltage output end to jointly output three groups of voltage signals to the camera 20, wherein the second voltage reduction unit 12 is connected to the first voltage output end and outputs 1.2V voltage to the camera 20 after reducing the voltage of the first voltage output end, the second voltage output end is also directly connected to the camera 20 and is used for providing 1.8V voltage, and the third voltage reduction unit 13 is connected to the first voltage output end and outputs 2.8V voltage to the camera 20 after reducing the voltage of the first voltage output end.
Specifically, referring to fig. 3, the second voltage-reducing unit 12 includes a dc converter and a plurality of capacitors, wherein an input terminal VIN of the dc converter is connected to the 3.3V voltage output by the first voltage output terminal, and the dc converter can output a voltage of 1.2V after being converted. The capacitor comprises a capacitor C12, a capacitor C240 and a capacitor C242, one end of the capacitor C12 is connected to the pin NC, and the capacitor C240 and the capacitor C242 are connected between the output pin VOUT and the pin GND for filtering.
Referring to fig. 4, the third voltage-reducing unit 13 includes a dc converter, a capacitor C13, a capacitor C66, a capacitor C132, a capacitor C133, a capacitor C136, a capacitor C138, and a resistor R60, wherein the first voltage output terminal is connected to the input pin VIN of the dc converter, one end of the capacitor C132 is connected between the first voltage output terminal and the input pin VIN, the other end of the capacitor C132 is grounded, the capacitor C133 is connected in parallel between the capacitor C132, the enable pin EN of the dc converter is connected in series with the capacitor C138 and then grounded, one end of the resistor R60 is connected between the first voltage output terminal and the input pin VIN, and the other end of the resistor R60 is connected between the enable pin EN and the capacitor C138. An output pin VOUT of the direct current converter is used for outputting the converted 2.8V voltage, a capacitor C240 and a capacitor C242 are respectively connected between the output pin VOUT and the ground pin GND in parallel, one end of the capacitor C12 is connected with the ground pin NC, and the other end of the capacitor C12 is grounded.
The second voltage output terminal of the second voltage dropping unit 12, the third voltage dropping unit 13, and the first voltage dropping unit 11 can output three different voltages to the camera 20, respectively, so that the camera can operate.
Further, referring to fig. 5, the elevation driving unit 15 employs a motor driver having two input ports IN1 and IN2 and two output ports OUT1 and OUT2, wherein the output port OUT1 outputs a high level when the input port IN1 receives a high level, and the output port OUT2 outputs a high level when the input port IN2 receives a high level. The input port IN1 is connected to the output port GPO-1 of the image processing unit 14, the input port IN2 is connected to the output port GPO-2 of the image processing unit 14, the output ports OUT1 and OUT2 are connected to the forward rotation connection terminal and the reverse rotation connection terminal of the dc motor, respectively, when the input port IN1 receives a high level, the output port OUT1 outputs a high level signal, the forward rotation connection terminal of the dc motor receives the high level signal and rotates forward to drive the camera to move upward, when the input port IN2 receives the high level, the output port OUT2 outputs the high level signal, the reverse rotation connection terminal of the dc motor receives the high level signal and rotates reverse to drive the camera to move downward.
Further, referring to fig. 6 and 7, the pin 1 of the first detection switch 40 is connected to the 3.3V voltage output by the first voltage output terminal, the pin 2 is connected to the input port GPI-1 of the image processing unit 14, and an impedance B9 with a resistance of 1K is connected in series between the pin 2 and the input port GPI-1 for current and voltage limiting protection.
The second detection switch 50 has a pin 1 connected to the 3.3V voltage output from the first voltage output terminal, a pin 2 connected to an input port GPI-2 connected to the image processing unit 14, and a resistance B10 having a resistance value of IK 1 connected in series between the pin 2 and the input port GPI-2.
The first inductive switch 40 and the second inductive switch 50 are both microswitches, an output shaft of the direct current motor is connected with a supporting piece for assembling the camera through a rack and a transmission belt, when the camera moves to the first inductive switch 40 or the second inductive switch 50, the supporting piece is connected with a stop lever of the microswitches, so that a movable contact and a static contact of the microswitches are conducted, a high level signal output by the image processing unit 14 is reset, and the camera 20 is maintained at the current position. In other embodiments of the present invention, the first inductive switch 40 and the second inductive switch 50 may be one of a mechanical switch, an optical switch, or an inductive switch.
Referring to fig. 8, the present invention further provides a lifting camera device, which includes a main control board, a camera 20, a lifting actuator 30, a first detection switch 40, and a second detection switch 50, wherein the lifting driving unit 15, the image processing unit 14, the first voltage-reducing unit 11, the second voltage-reducing unit 12, and the third voltage-reducing unit 13 are integrated on the main control board and are respectively connected to the camera 20, the lifting actuator 30, the first detection switch 40, and the second detection switch 50 through the main control board, wherein the camera 20 is connected to a port CAM1 of the main control board, and can provide 1.2V, 1.8V, and 2.8V power to the camera 20, and simultaneously perform data interaction by using a communication protocol of MIPI-DPHY-CSI 2.0. The lifting executing mechanism 30 adopts a direct current motor to provide power, then drives the supporting piece provided with the camera 20 to move up and down through a gear, a rack, a transmission belt and the like, and meanwhile, in order to ensure that the supporting piece can move more stably and smoothly, the lifting executing mechanism is also provided with a screw rod for guiding, so that the problem that the movable supporting piece is blocked in the up-and-down movement process is avoided.
Further, the lifting camera device further comprises a shell which comprises a fixed part and a movable part, the main control board, the first induction switch 40, the second induction switch 50 and part of the lifting execution mechanism 30 are wrapped by the fixed part, the camera 20 and the lifting execution mechanism 30 of the other part are wrapped by the movable part, and the overall attractiveness is improved.
Compared with the prior art, the automatic lifting device has the advantages that the automatic lifting of the camera 20 is realized through the matching of the image processing unit 14, the lifting driving unit 15 and the lifting executing mechanism 30, the whole circuit structure is simple, meanwhile, the lifting driving mechanism 15 is matched with a gear, a rack, a conveyor belt and the like through a motor driver, the cost is low, the whole device is easy to assemble, and the device is convenient to install and disassemble.
The above examples are intended only to illustrate specific embodiments of the present invention. It should be noted that, for a person skilled in the art, several modifications and variations can be made without departing from the inventive concept, and these modifications and variations shall fall within the protective scope of the present invention.
Claims (10)
1. The utility model provides a lift camera system, includes camera, drive the lift actuating mechanism of camera motion and adjust the lift drive unit of lift actuating mechanism direction of motion which characterized in that still includes: the lifting driving unit adjusts the movement direction of the lifting actuating mechanism according to a detection signal of the image processing unit, and then adjusts the movement direction of the camera.
2. The lifting camera system according to claim 1, wherein when the image processing unit detects that the camera is working, the image processing unit sends a first detection signal, and the lifting driving unit controls the lifting actuator to drive the camera to move upwards;
when the image processing unit detects that the camera does not work, the image processing unit sends a second detection signal, and the lifting driving unit controls the lifting actuating mechanism to drive the camera to move downwards.
3. The lift camera system of claim 2, further comprising a first detection switch and a second detection switch connected to the image processing unit, wherein the first detection switch is disposed above the second detection switch, and the camera is disposed between the first detection switch and the second detection switch, when the camera moves to the first detection switch or the second detection switch, the first detection switch or the second detection switch triggers and controls the image processing unit to send a reset signal to the lift driving unit, and the lift driving unit controls the lift actuator to stop moving, so that the camera is maintained at the first detection switch or the second detection switch.
4. The lift camera system of claim 1, further comprising a first voltage reduction unit connected between a power source and the image processing unit, wherein the first voltage reduction unit comprises a first voltage output terminal, a second voltage output terminal, and a third voltage output terminal connected to the image processing unit, wherein the first voltage output terminal, the second voltage output terminal, and the third voltage output terminal output different voltage signals to the image processing unit, and wherein the first voltage output terminal outputs a higher voltage than the second voltage output terminal, and the second voltage output terminal outputs a higher voltage than the third voltage output terminal.
5. The lift-type camera system of claim 4, further comprising a second voltage-reducing unit and a third voltage-reducing unit connected between a third voltage output terminal and the camera, wherein the second voltage output terminal is further connected to the camera, the second voltage output terminal, the second voltage-reducing unit, and the third voltage-reducing unit respectively output different voltage signals to the camera, and the voltage output by the second voltage-reducing unit is lower than the voltage output by the second voltage output terminal, and the voltage output by the second voltage output terminal is lower than the voltage output by the third voltage-reducing unit.
6. The lifting camera system according to claim 3, wherein the lifting actuator is a dc motor having an output shaft connected to the camera, and when the lifting driving unit receives the first detection signal, the lifting driving unit controls the dc motor to rotate forward, so as to drive the camera to move upward;
when the lifting driving unit receives a second detection signal, the lifting driving unit controls the straight line
The current motor is reversed to drive the camera to move downwards;
and when the lifting driving unit receives a reset signal, the lifting driving unit controls the direct current motor to stop moving.
7. The lift camera system of claim 4, wherein the first buck unit is a three-channel synchronous buck converter, which includes a first voltage output terminal, a second voltage output terminal and a third voltage output terminal connected thereto, wherein the first voltage output terminal includes a resistor R10, a resistor R31, an inductor L1, a capacitor C63, a capacitor C64 and a capacitor C65, the three-channel synchronous buck converter has a switching pin SW1 connected in series with the inductor L1 to output a first voltage, and a feedback pin FB1 connected in series with the resistor R31 to ground, and the capacitor C63, the capacitor C64, the capacitor C65 and the resistor R10 are respectively connected in parallel between the switching pin SW1 and the feedback pin FB 1;
the second voltage output end comprises an inductor L2, a capacitor C60, a capacitor C61, a capacitor C62, a resistor R32, a resistor R33 and a resistor R34, a conversion pin SW2 of the three-channel synchronous buck converter is sequentially connected with the inductor L2 and the resistor R34 in series and then outputs a second voltage, a voltage input with the same size as the second voltage is connected between the inductor L2 and the resistor R34, a feedback pin FB2 of the three-channel synchronous buck converter is connected with the resistor R33 in series and then is grounded, and the capacitor C60, the capacitor C61, the capacitor C62 and the resistor R32 are respectively connected between the conversion pin SW2 and the feedback pin FB2 in parallel;
the third voltage output end comprises an inductor L3, a resistor R16, a resistor R35, a capacitor C57, a capacitor C58 and a capacitor C59, a conversion pin SW3 of the three-channel synchronous buck converter is connected with the inductor L3 in series and then outputs a third voltage, a feedback pin FB3 is connected with a resistor R16 in series and then is grounded, and the resistor R35, the capacitor C57, the capacitor C58 and the capacitor C59 are connected between the conversion pin SW3 and the feedback pin FB3 in parallel respectively.
8. The lifting camera system according to claim 6, wherein the first and second inductive switches are micro switches, an output shaft of the dc motor is connected to a supporting member for assembling the camera through a rack and a transmission belt, and when the camera moves to the first or second inductive switch, the supporting member is connected to a blocking lever of the micro switch, so that a moving contact and a stationary contact of the micro switch are turned on, and the image processing unit is controlled to send a reset signal.
9. A lift camera device, characterized in that the lift camera device employs a lift camera system according to any one of claims 1 to 8.
10. The elevating camera device as recited in claim 9, wherein the elevating camera device comprises: the main control board and with camera, lift actuating mechanism, first detection switch and the second detection switch that the main control board is connected, the main control board is integrated with lift drive unit, image processing unit, first voltage reduction unit, second voltage reduction unit and third voltage reduction unit, the main control board include with the camera is connected and is given its output CAM1 of supplying power, with lift actuating mechanism connects and is used for controlling direct current motor corotation and the output OUT1 and the output OUT2 of reversal, and with output GPI1 and output GPI2 that first detection switch and second detection switch are connected.
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