CN108259826B - Image acquisition and transmission system for displaying multiple images on same picture - Google Patents
Image acquisition and transmission system for displaying multiple images on same picture Download PDFInfo
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- CN108259826B CN108259826B CN201810005494.0A CN201810005494A CN108259826B CN 108259826 B CN108259826 B CN 108259826B CN 201810005494 A CN201810005494 A CN 201810005494A CN 108259826 B CN108259826 B CN 108259826B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
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Abstract
The invention discloses an image acquisition and transmission system for displaying a plurality of images on the same picture, which comprises an integrated camera device, a display panel driving device, a multi-view display panel, a parameter setting device, a microprocessor and a power supply protection circuit, wherein the integrated camera device comprises a power supply circuit and a plurality of cameras, the plurality of cameras are all connected with the power supply circuit, and the display panel driving device comprises a plurality of image quality adjusting circuits and a display panel driving circuit; the power supply circuit comprises a positive input end, a negative input end, a positive output end, a negative output end, a first diode, a first resistor, a second voltage stabilizing diode, a first triode, a third resistor, a first capacitor, a fourth resistor, a second triode, a third voltage stabilizing diode and a first MOS (metal oxide semiconductor) tube. The invention has the advantages of convenient and simple wiring, capability of simultaneously displaying a plurality of images in the same picture, simpler circuit structure, lower cost and higher safety and reliability of the circuit.
Description
Technical Field
The invention relates to the field of image acquisition and display, in particular to an image acquisition and transmission system for displaying a plurality of images on the same picture.
Background
At present, a Camera mainly transmits a collected image to a server (the server may be a Linux operating system or a Windows operating system) through a usb (universal Serial bus) Interface, an Ethernet Interface, or an mipicsi (Mobile Industry Processor Interface), a parallel Interface, an MIPI (Mobile Industry Processor Interface), or the like. In some application scenarios, for example, in the field of automatic driving, a large number (for example, 9 paths, or even more than ten paths) of cameras are often installed on a vehicle for collecting environmental image data, and installing too many cameras not only complicates wiring, but also causes waste of cost. In a traditional image acquisition and display system, only images acquired by cameras can be displayed independently, and images acquired by a plurality of cameras cannot be displayed in the same picture at the same time. In addition, the circuit structure of the power supply part in the traditional image acquisition display system is complex, and the hardware cost is high. And because the power supply part in the traditional image acquisition system lacks the corresponding circuit protection function, the safety and the reliability of the circuit are not high.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide an image collecting and transmitting system that is convenient and simple to connect, can display a plurality of images on the same screen at the same time, has a simple circuit structure, a low cost, and a high circuit safety and reliability, and can display a plurality of images on the same screen.
The technical scheme adopted by the invention for solving the technical problems is as follows: an image acquisition and transmission system for displaying a plurality of images on the same picture is constructed, the system comprises an integrated camera device, a display panel driving device, a multi-view display panel, a parameter setting device, a microprocessor and a power supply protection circuit, the integrated camera device comprises a power supply circuit and a plurality of cameras, the cameras are all connected with the power supply circuit, the display panel driving device comprises a plurality of image quality adjusting circuits and a display panel driving circuit, each image quality adjusting circuit is connected with the corresponding camera and is used for receiving the original image acquired by the camera, adjusting the brightness, the contrast, the definition and the chromaticity of the original image and inputting the adjusted image into the display panel driving circuit, and the display panel driving circuit carries out signal processing on the adjusted image, wherein the signal processing is required to display the image on the multi-view display panel, the multi-view display panel displays a plurality of adjusted images in the same picture at the same time, the parameter setting device is connected with the microprocessor and is used for inputting set values for image quality adjustment, the microprocessor controls each image quality adjustment circuit to carry out corresponding image quality adjustment according to the set values, and the power supply protection circuit is connected with the microprocessor and is used for protecting the power supply;
the power supply circuit comprises a positive input end, a negative input end, a positive output end, a negative output end, a first diode, a first resistor, a second voltage-stabilizing diode, a first triode, a third resistor, a first capacitor, a fourth resistor, a second triode, a third voltage-stabilizing diode and a first MOS (metal oxide semiconductor) tube, wherein the cathode of the first diode is connected with the positive input end, the anode of the first diode is connected with the negative input end, the cathode of the first diode is also respectively connected with one end of the first resistor and the cathode of the second voltage-stabilizing diode, the base of the first triode is respectively connected with the other end of the first resistor and one end of the second resistor, the other end of the second resistor is connected with the negative input end, and the emitter of the first triode is respectively connected with the anode of the second voltage-stabilizing diode and one end of the third resistor, the other end of the third resistor is connected with the negative electrode input end;
the collecting electrode of first triode passes through first electric capacity respectively with the one end of fourth resistance and the base of second triode are connected, the other end of fourth resistance and the projecting pole of second triode all with the negative pole input is connected, the collecting electrode of second triode respectively with the negative pole of third zener diode, the grid of first MOS pipe, the negative pole and the positive output of second zener diode are connected, the positive pole of third zener diode and the source electrode of first MOS pipe all with the negative pole input is connected, the drain electrode of first MOS pipe with the negative pole output is connected, the capacitance value of first electric capacity is 500 pF.
In the image acquisition and transmission system for displaying a plurality of images on the same picture, the power supply circuit further comprises a fourth diode, the anode of the fourth diode is connected with the cathode of the second voltage stabilizing diode, the cathode of the fourth diode is connected with the cathode output end, and the model of the fourth diode is S-562.
In the image acquisition and transmission system for displaying a plurality of images on the same picture, the power supply circuit further comprises a second capacitor, one end of the second capacitor is connected with the collector electrode of the second triode, the other end of the second capacitor is connected with the grid electrode of the first MOS tube, and the capacitance value of the second capacitor is 460 pF.
In the image acquisition and transmission system for displaying a plurality of images on the same picture, the power supply circuit further comprises a fifth resistor, one end of the fifth resistor is connected with the emitter of the second triode, the other end of the fifth resistor is connected with the negative input end, and the resistance value of the fifth resistor is 33k omega.
In the image acquisition and transmission system for displaying a plurality of images on the same picture, the first triode is a PNP type triode, the second triode is an NPN type triode, and the first MOS tube is an N-channel MOS tube.
In the image capturing and transmitting system for displaying a plurality of images on the same screen, the power protection circuit includes a dc power supply, a relay, a third triode, a fourth triode, a second MOS transistor, a sixth resistor, a seventh resistor, an eighth sliding rheostat, a third capacitor, a fourth capacitor, a light emitting diode and a voltage output terminal, a moving contact of the relay is connected to the dc power supply, a stationary contact of the relay is respectively connected to a collector of the third triode and one end of the fourth capacitor, an emitter of the third triode is connected to one end of a coil of the relay, the other end of the coil of the relay is grounded, a base of the third triode is respectively connected to the other end of the fourth capacitor and one end of the sixth resistor, the other end of the sixth resistor is grounded, and a fixed end of the eighth sliding rheostat is respectively connected to one end of the fourth capacitor, and one end, The drain electrode of the second MOS tube, the collector electrode of the fourth triode and one end of the third capacitor are connected, another fixed end and the sliding end of the eighth sliding rheostat are respectively connected with one end of the seventh resistor and the base electrode of the fourth triode, the other end of the seventh resistor is grounded, the emitter electrode of the fourth triode is connected with the power output end, the grid electrode of the second MOS tube is respectively connected with one end of the third capacitor and the anode of the light-emitting diode, the cathode of the light-emitting diode is grounded, the source electrode of the second MOS tube is connected with the voltage output end, the capacitance value of the third capacitor is 300pF, and the capacitance value of the fourth capacitor is 450 pF.
In the image capturing and transmitting system for displaying a plurality of images on the same picture, the power protection circuit further comprises a fifth diode, an anode of the fifth diode is connected with a drain electrode of the second MOS transistor, a cathode of the fifth diode is connected with a collector electrode of the fourth triode, and the fifth diode is of a type e-501.
In the image acquisition and transmission system for displaying a plurality of images on the same picture, the power protection circuit further comprises a ninth resistor, one end of the ninth resistor is connected with the emitter of the fourth triode, the other end of the ninth resistor is connected with the voltage output end, and the resistance value of the ninth resistor is 36k Ω.
In the image acquisition and transmission system for displaying a plurality of images on the same picture, the power protection circuit further comprises a fifth capacitor, one end of the fifth capacitor is connected with one end of the seventh resistor, the other end of the fifth capacitor is connected with the base electrode of the fourth triode, and the capacitance value of the fifth capacitor is 500 pF.
The image acquisition and transmission system for displaying a plurality of images on the same picture has the following beneficial effects: because the integrated camera device, the display panel driving device, the multi-view display panel, the parameter setting device, the microprocessor and the power supply protection circuit are arranged, the integrated camera device comprises a power supply circuit and a plurality of cameras, the display panel driving device comprises a plurality of image quality adjusting circuits and a display panel driving circuit, the multi-view display panel can display a plurality of images in the same picture at the same time, and the plurality of cameras are made into the integrated camera device, thereby not only saving the cost, but also reducing the complexity of wiring, the power supply circuit comprises a positive pole input end, a negative pole input end, a positive pole output end, a negative pole output end, a first diode, a first resistor, a second voltage stabilizing diode, a first triode, a third resistor, a first capacitor, a fourth resistor, a second triode, a third voltage stabilizing diode and a first MOS tube, this power supply circuit is less for traditional supply circuit, and its components and parts that use can reduce the hardware cost like this, and in addition, first electric capacity is used for preventing the interference between first triode and the second triode, therefore the wiring is convenient simple, can show a plurality of images simultaneously in same picture, circuit structure is comparatively simple, the cost is lower, the security and the reliability of circuit are higher.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of an image capturing and transmitting system for displaying a plurality of images on a same screen according to the present invention;
FIG. 2 is a schematic circuit diagram of the power supply circuit of the embodiment;
fig. 3 is a circuit schematic diagram of the power protection circuit in the embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In an embodiment of the image capturing and transmitting system for displaying a plurality of images on the same screen according to the present invention, a schematic structural diagram of the image capturing and transmitting system for displaying a plurality of images on the same screen is shown in fig. 1. In fig. 1, the image capturing and transmitting system for displaying a plurality of images on the same screen includes an integrated image capturing device 1, a display panel driving device 2, a multi-view display panel 3, a parameter setting device 4, a microprocessor 5 and a power protection circuit 6, wherein the integrated image capturing device 1 includes a power supply circuit 11 and a plurality of cameras 12, the plurality of cameras 12 are all connected with the power supply circuit 11, the display panel driving device 2 includes a plurality of image quality adjusting circuits 21 and a display panel driving circuit 22, and the image quality adjusting circuits 21 are completed by using existing chips.
Each image quality adjusting circuit 21 is connected to a corresponding camera 12, and is configured to receive an original image collected by the camera 12, adjust brightness, contrast, sharpness, and chromaticity of the original image, and input the adjusted image to a display panel driving circuit 22, the display panel driving circuit 22 performs signal processing on the adjusted image, where the image should be displayed on a multi-view display panel 3, and sends a processed driving signal to the multi-view display panel 3, the multi-view display panel 3 simultaneously displays a plurality of adjusted images on the same screen, a parameter setting device 4 is connected to the microprocessor 5, and a setting value for image quality adjustment can be input through the parameter setting device 4, and the setting value is set by a user. The setting values are introduced into the microprocessor 5, the microprocessor 5 generates control signals for controlling the image quality adjustment circuits 21 based on the input setting values, controls each image quality adjustment circuit 21 to independently adjust the image quality of the original image from the corresponding camera 12, and the power protection circuit 6 is connected to the microprocessor 5 for protecting the power.
Fig. 2 is a schematic circuit diagram of a power supply circuit in this embodiment, in fig. 2, the power supply circuit 11 includes a positive input terminal Vin +, a negative input terminal Vin-, a positive output terminal Vo +, a negative output terminal Vo-, a first diode D1, a first resistor R1, a second resistor R2, a second zener diode D2, a first transistor Q1, a third resistor R3, a first capacitor C1, a fourth resistor R4, a second transistor Q2, a third zener diode D3, and a first MOS transistor M1, wherein a cathode of the first diode D1 is connected to the positive input terminal Vin +, an anode of the first diode D1 is connected to the negative input terminal Vin-, a cathode of the first diode D1 is further connected to one end of the first resistor R1 and a cathode of the second zener diode D2, a base of the first transistor Q1 is connected to the other end of the first resistor R1 and one end of the second resistor R2, the other end of the second resistor R2 is connected with a negative input terminal Vin-, an emitter of the first triode Q1 is respectively connected with an anode of the second voltage-stabilizing diode D2 and one end of the third resistor R3, and the other end of the third resistor R3 is connected with the negative input terminal Vin-.
The collector of the first triode Q1 is connected with one end of a fourth resistor R4 and the base of the second triode Q2 through a first capacitor C1, the other end of the fourth resistor R4 and the emitter of the second triode Q2 are connected with a negative input terminal Vin-, the collector of the second triode Q2 is connected with the cathode of a third voltage-stabilizing diode D3, the grid of the first MOS transistor M1, the cathode of the second voltage-stabilizing diode D2 and a positive output terminal Vo +, the anode of the third voltage-stabilizing diode D3 and the source of the first MOS transistor M1 are connected with a negative input terminal Vin-, and the drain of the first MOS transistor M1 is connected with a negative output terminal Vo-.
Compared with the traditional power supply circuit, the power supply circuit 11 has the advantages that the number of used components is small, the circuit structure is simple, and therefore hardware cost can be reduced. The first capacitor C1 is a coupling capacitor for preventing interference between the first transistor Q1 and the second transistor Q2, so that the safety and reliability of the circuit are high. It should be noted that in the present embodiment, the capacitance value of the first capacitor C1 is 500pF, and certainly, in practical applications, the capacitance value of the first capacitor C1 may also be adjusted accordingly according to specific situations.
The first diode D1 is connected in parallel with the DC input power supply, when the DC input power supply is connected reversely, namely the positive input end Vin + is connected with the DC input power supply cathode, the negative input end Vin-is connected with the DC input power supply anode, at this moment, the first diode D1 is conducted to generate a large short-circuit current to prompt the DC input power supply to carry out overcurrent protection or blow a fuse in the circuit to remind a user, the first diode D1 is cut off reversely when in normal work, the system efficiency loss is zero, no voltage drop is generated because no series circuit is connected, no loss is generated, and the input back voltage can not damage the subsequent switch power supply.
The second zener diode D2 obtains the working current through the third resistor R3 and is still in a regulated state, and the terminal voltage of the first resistor R1 is obtained by dividing the voltage of the first resistor R1 and the second resistor R2, which is not enough to turn on the base electrode to the emitter electrode of the first transistor Q1, and the first transistor Q1 is turned off, so that the fourth resistor R4 has a pull-down function, the collector electrode of the first transistor Q1 outputs a low level, and the second transistor Q2 is in a cut-off stateIn this state, the voltage regulation voltage of the third voltage regulation diode D3 is larger than the turn-on voltage V of the first MOS transistor M1GSAnd the first MOS transistor M1 is in a saturated conduction state, so that the voltage of the direct current input power supply is completely added to the positive output end Vo + and the negative output end Vo-, and the subsequent switching power supply circuit is electrified to work normally. According to the above working state, the first MOS transistor M1 is connected in series in the loop from the positive input terminal Vin + to the negative output terminal Vo —, that is, in the so-called ground loop, the first MOS transistor M1 can be directly driven by the dc input power through the third zener diode D3, the on-resistance (rds (on)) after the first MOS transistor M1 is turned on is very low, the insertion loss is low, and the static power consumption is very low in normal times; since no booster circuit is used, the static power consumption is further reduced.
When the direct current input power supply is over-voltage, the second voltage-stabilizing diode D2 obtains the working current through the third resistor R3, and is still in a voltage-stabilizing state, and the terminal voltage of the first resistor R1 is obtained by dividing the voltage of the first resistor R1 and the second resistor R2, but is enough to make the base electrode of the first triode Q1 conduct to the emitter electrode, the first triode Q1 conduct, the collector electrode of the first triode Q1 outputs high level, at this time, the second triode Q2 is in an amplifying state, the second triode Q2 is actually in a saturated conduction state, the voltage-stabilizing voltage of the third voltage-stabilizing diode D3 is equal to the saturated conduction voltage drop of the second triode Q2, generally less than 0.3V, and far less than the turn-on voltage V of the first MOS transistor M1 due to the saturated conduction of the second triode Q2GSWhen the first MOS transistor M1 is in the off state, the voltage of the dc input power cannot be applied to the positive output terminal Vo + and the negative output terminal Vo-, and the subsequent switching power supply circuit stops operating because there is no input voltage. In the event of an overvoltage, the first MOS transistor M1, which is protected against overvoltage, is not easily damaged by being turned off, i.e., turned off.
It should be noted that in this embodiment, the first transistor Q1 is a PNP transistor, the second transistor Q2 is an NPN transistor, and the first MOS transistor M1 is an N-channel MOS transistor. Certainly, in practical applications, the first transistor Q1 may also be an NPN transistor, the second transistor Q2 may also be a PNP transistor, and the first MOS transistor M1 may also be a P-channel MOS transistor, but the structure of the circuit is also changed accordingly.
In this embodiment, the power supply circuit 11 further includes a fourth diode D4, an anode of the fourth diode D4 is connected to a cathode of the second zener diode D2, and a cathode of the fourth diode D4 is connected to the negative output terminal Vo-. The fourth diode D4 is a current-limiting diode, and is used for current-limiting protection of the branch between the first transistor Q1 and the second transistor Q2, so as to further enhance the safety and reliability of the circuit. It should be noted that in the present embodiment, the model of the fourth diode D4 is S-562, and in practical applications, other models of diodes with similar functions may be selected as the fourth diode D4.
In this embodiment, the power supply circuit 11 further includes a second capacitor C2, one end of the second capacitor C2 is connected to the collector of the second transistor Q2, and the other end of the second capacitor C2 is connected to the gate of the first MOS transistor M1. The second capacitor C2 is a coupling capacitor for preventing interference between the second transistor Q2 and the first MOS transistor M1, so as to further enhance the safety and reliability of the circuit. It should be noted that in the present embodiment, the capacitance of the second capacitor C2 is 460pF, and certainly, in practical applications, the capacitance of the second capacitor C2 may be adjusted accordingly according to specific situations.
In this embodiment, the power supply circuit 11 further includes a fifth resistor R5, one end of the fifth resistor R5 is connected to the emitter of the second transistor Q2, and the other end of the fifth resistor R5 is connected to the negative input terminal Vin-. The fifth resistor R5 is a current limiting resistor, and is used for performing current limiting protection on the emitter current of the second transistor Q2, so as to further enhance the current limiting effect. It should be noted that, in the embodiment, the resistance of the fifth resistor R5 is 33k Ω, and certainly, in practical applications, the resistance of the fifth resistor R5 may be adjusted accordingly according to specific situations.
Fig. 3 is a schematic circuit diagram of a power protection circuit in this embodiment, in fig. 3, the power protection circuit 6 includes a dc power source VCC, a relay, a third transistor Q3, a fourth transistor Q4, a second MOS transistor M2, a sixth resistor R6, a seventh resistor R7, an eighth sliding resistor R8, a third capacitor C3, a fourth capacitor C4, a light emitting diode LED, and a voltage output terminal OUT, wherein a moving contact K-1 of the relay is connected to the dc power source VCC, the dc power source VCC is connected to the microprocessor 5, a stationary contact K-2 of the relay is connected to a collector of the third transistor Q3 and one end of the fourth capacitor C4, an emitter of the third transistor Q3 is connected to one end of a coil K of the relay, the other end of the coil K of the relay is grounded, a base of the third transistor Q3 is connected to the other end of the fourth capacitor C4 and one end of the sixth resistor R6, the other end of the sixth resistor R6 is grounded, one fixed end of the eighth sliding varistor R8 is connected to one end of the fourth capacitor C4, the drain of the second MOS transistor M2, the collector of the fourth triode Q4 and one end of the third capacitor C3, the other fixed end and the sliding end of the eighth sliding varistor R8 are connected to one end of the seventh resistor R7 and the base of the fourth triode Q4, the other end of the seventh resistor R7 is grounded, the emitter of the fourth triode Q4 is connected to the power output terminal OUT, the gate of the second MOS transistor M2 is connected to one end of the third capacitor C3 and the anode of the light emitting diode LED, the cathode of the light emitting diode LED is grounded, and the source of the second MOS transistor M2 is connected to the voltage output terminal OUT.
Compared with the traditional power supply circuit, the power supply protection circuit 6 has the advantages that the number of used components is small, the circuit structure is simple, and therefore hardware cost can be reduced. The third capacitor C3 is a coupling capacitor for preventing interference between the fourth transistor Q4 and the second MOS transistor M2; the fourth capacitor C4 is a coupling capacitor for preventing interference between the third transistor Q3 and the second MOS transistor M2, so that the circuit has high safety and reliability. It should be noted that, in the embodiment, the capacitance of the third capacitor C3 is 300pF, and the capacitance of the fourth capacitor C4 is 450pF, and certainly, in practical applications, the capacitance of the third capacitor C3 and the capacitance of the fourth capacitor C4 may be adjusted accordingly according to specific situations.
In this embodiment, the power protection circuit 6 further includes a fifth diode D5, an anode of the fifth diode D5 is connected to the drain of the second MOS transistor M2, and a cathode of the fifth diode D5 is connected to the collector of the fourth transistor Q4. The fifth diode D5 is a current limiting diode for current limiting protection of the collector current of the fourth transistor Q4, so as to further enhance the safety and reliability of the circuit. It should be noted that in the present embodiment, the model of the fifth diode D5 is e-501, and certainly, in practical applications, other models of diodes with similar functions may be selected as the fifth diode D5.
In this embodiment, the power protection circuit 6 further includes a ninth resistor R9, one end of the ninth resistor R9 is connected to the emitter of the fourth transistor Q4, and the other end of the ninth resistor R9 is connected to the voltage output terminal OUT. The ninth resistor R9 is a current limiting resistor, and is used for current limiting protection of the emitter current of the fourth transistor Q4, so as to further enhance the safety and reliability of the circuit. It should be noted that in the present embodiment, the resistance of the ninth resistor R9 is 36k Ω, and certainly, in practical applications, the resistance of the ninth resistor R9 may be adjusted accordingly according to specific situations.
In this embodiment, the power protection circuit 6 further includes a fifth capacitor C5, one end of the fifth capacitor C5 is connected to one end of a seventh resistor R7, and the other end of the fifth capacitor C5 is connected to the base of the fourth transistor Q4. The fifth capacitor C5 is a coupling capacitor for preventing interference between the second MOS transistor M2 and the fourth transistor Q4, so as to further enhance the safety and reliability of the circuit. It should be noted that the capacitance of the fifth capacitor C5 is 500pF, and of course, in practical applications, the capacitance of the fifth capacitor C5 may be adjusted accordingly according to specific situations.
In short, in this embodiment, the plurality of cameras 12 are integrated into the imaging apparatus 1, which not only saves cost, but also reduces complexity of wiring, and facilitates and simplifies wiring. The multi-view display panel 3 is adopted to simultaneously display a plurality of adjusted images in the same picture, and compared with the traditional power supply circuit, the power supply circuit 11 has fewer used components and simpler circuit structure, thereby reducing the hardware cost. In addition, since the power supply circuit 11 is provided with a coupling capacitor, the safety and reliability of the circuit are high.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. An image acquisition and transmission system for displaying a plurality of images on the same picture is characterized by comprising an integrated camera device, a display panel driving device, a multi-view display panel, a parameter setting device, a microprocessor and a power supply protection circuit, wherein the integrated camera device comprises a power supply circuit and a plurality of cameras, the cameras are all connected with the power supply circuit, the display panel driving device comprises a plurality of image quality adjusting circuits and a display panel driving circuit, each image quality adjusting circuit is connected with the corresponding camera and is used for receiving an original image acquired by the camera, adjusting the brightness, the contrast, the definition and the chromaticity of the original image and inputting the adjusted image to the display panel driving circuit, and the display panel driving circuit carries out signal processing on the adjusted image, wherein the signal processing is required to display the image on the multi-view display panel, the multi-view display panel displays a plurality of adjusted images in the same picture at the same time, the parameter setting device is connected with the microprocessor and is used for inputting set values for image quality adjustment, the microprocessor controls each image quality adjustment circuit to carry out corresponding image quality adjustment according to the set values, and the power supply protection circuit is connected with the microprocessor and is used for protecting the power supply;
the power supply circuit comprises a positive input end, a negative input end, a positive output end, a negative output end, a first diode, a first resistor, a second voltage-stabilizing diode, a first triode, a third resistor, a first capacitor, a fourth resistor, a second triode, a third voltage-stabilizing diode and a first MOS (metal oxide semiconductor) tube, wherein the cathode of the first diode is connected with the positive input end, the anode of the first diode is connected with the negative input end, the cathode of the first diode is also respectively connected with one end of the first resistor and the cathode of the second voltage-stabilizing diode, the base of the first triode is respectively connected with the other end of the first resistor and one end of the second resistor, the other end of the second resistor is connected with the negative input end, and the emitter of the first triode is respectively connected with the anode of the second voltage-stabilizing diode and one end of the third resistor, the other end of the third resistor is connected with the negative electrode input end;
a collector of the first triode is respectively connected with one end of a fourth resistor and a base of a second triode through the first capacitor, the other end of the fourth resistor and an emitter of the second triode are respectively connected with the negative input end, a collector of the second triode is respectively connected with a cathode of a third voltage stabilizing diode, a grid of a first MOS (metal oxide semiconductor) tube, a cathode of a second voltage stabilizing diode and an anode output end, an anode of the third voltage stabilizing diode and a source of the first MOS tube are respectively connected with the negative input end, a drain of the first MOS tube is connected with the negative output end, and a capacitance value of the first capacitor is 500 pF;
the power supply circuit of the power supply also comprises a fourth diode, the anode of the fourth diode is connected with the cathode of the second voltage stabilizing diode, the cathode of the fourth diode is connected with the cathode output end, and the model of the fourth diode is S-562;
the power supply circuit further comprises a second capacitor, one end of the second capacitor is connected with a collector electrode of the second triode, the other end of the second capacitor is connected with a grid electrode of the first MOS tube, and the capacitance value of the second capacitor is 460 pF.
2. The system according to claim 1, wherein the power supply circuit further comprises a fifth resistor, one end of the fifth resistor is connected to the emitter of the second transistor, the other end of the fifth resistor is connected to the negative input terminal, and the resistance of the fifth resistor is 33k Ω.
3. The system according to claim 1 or 2, wherein the first transistor is a PNP transistor, the second transistor is an NPN transistor, and the first MOS transistor is an N-channel MOS transistor.
4. The system according to claim 1 or 2, wherein the power protection circuit comprises a dc power supply, a relay, a third transistor, a fourth transistor, a second MOS transistor, a sixth resistor, a seventh resistor, an eighth sliding rheostat, a third capacitor, a fourth capacitor, a light emitting diode and a voltage output terminal, a moving contact of the relay is connected to the dc power supply, a stationary contact of the relay is connected to a collector of the third transistor and one end of the fourth capacitor, respectively, an emitter of the third transistor is connected to one end of a coil of the relay, the other end of the coil of the relay is grounded, a base of the third transistor is connected to the other end of the fourth capacitor and one end of the sixth resistor, respectively, and the other end of the sixth resistor is grounded, one fixed end of the eighth sliding rheostat is connected with one end of the fourth capacitor, the drain electrode of the second MOS tube, the collector electrode of the fourth triode and one end of the third capacitor respectively, the other fixed end and the sliding end of the eighth sliding rheostat are connected with one end of the seventh resistor and the base electrode of the fourth triode respectively, the other end of the seventh resistor is grounded, the emitter electrode of the fourth triode is connected with the power output end, the grid electrode of the second MOS tube is connected with one end of the third capacitor and the anode of the light-emitting diode respectively, the cathode of the light-emitting diode is grounded, the source electrode of the second MOS tube is connected with the voltage output end, the capacitance value of the third capacitor is 300pF, and the capacitance value of the fourth capacitor is 450 pF.
5. The system according to claim 4, wherein the power protection circuit further comprises a fifth diode, an anode of the fifth diode is connected to the drain of the second MOS transistor, a cathode of the fifth diode is connected to the collector of the fourth transistor, and the fifth diode is of type e-501.
6. The system according to claim 5, wherein the power protection circuit further comprises a ninth resistor, one end of the ninth resistor is connected to the emitter of the fourth transistor, the other end of the ninth resistor is connected to the voltage output terminal, and the resistance of the ninth resistor is 36k Ω.
7. The system according to claim 6, wherein the power protection circuit further comprises a fifth capacitor, one end of the fifth capacitor is connected to one end of the seventh resistor, the other end of the fifth capacitor is connected to the base of the fourth transistor, and the capacitance of the fifth capacitor is 500 pF.
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| CN201810005494.0A CN108259826B (en) | 2018-01-03 | 2018-01-03 | Image acquisition and transmission system for displaying multiple images on same picture |
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| CN108259826B true CN108259826B (en) | 2020-05-22 |
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| CN111064886B (en) * | 2019-12-19 | 2022-03-01 | 惠州Tcl移动通信有限公司 | Shooting method of terminal equipment, terminal equipment and storage medium |
| CN112881410A (en) * | 2021-01-18 | 2021-06-01 | 合肥钛柯精密机械有限公司 | Multi-direction visual inspection table |
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