CN215474959U - Vehicle-mounted camera power supply system - Google Patents
Vehicle-mounted camera power supply system Download PDFInfo
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- CN215474959U CN215474959U CN202120090813.XU CN202120090813U CN215474959U CN 215474959 U CN215474959 U CN 215474959U CN 202120090813 U CN202120090813 U CN 202120090813U CN 215474959 U CN215474959 U CN 215474959U
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- 239000013589 supplement Substances 0.000 description 3
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- 102100034112 Alkyldihydroxyacetonephosphate synthase, peroxisomal Human genes 0.000 description 1
- 101000799143 Homo sapiens Alkyldihydroxyacetonephosphate synthase, peroxisomal Proteins 0.000 description 1
- 238000000848 angular dependent Auger electron spectroscopy Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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Abstract
The utility model discloses a vehicle-mounted camera power supply system which comprises a vehicle-mounted camera and a controller part, wherein a voltage regulating circuit is arranged in the controller, one end of a resistor R1 is connected to an FB pin of a voltage converter DC/DC0, the other end of a resistor R1 is connected with one end of a resistor R2, the resistor R1 and the resistor R2 are grounded through a capacitor C1, the other end of the resistor R2 is connected to a pin of an SOC through a data line, the pin in the middle of the SOC is connected with one ends of the resistor R3 and the resistor R4 in parallel, the other end of the resistor R4 is grounded, the other end of the resistor R3 is connected with a current detection circuit, the current detection circuit is connected back to the pin below the SOC, and the voltage converter DC/DC0 is directly connected with the current detection circuit.
Description
Technical Field
The utility model relates to a wide range, in particular to a vehicle-mounted camera power supply system.
Background
The vehicle-mounted camera gradually develops into a high-definition camera from the former standard definition. The application range is also wider and wider, and the application range is developed from the previous backing assistance to DVR, 360-degree look around, streaming media rearview mirror, ADAS, DMS, in-vehicle monitoring and the like. The vehicle-mounted camera supplies direct current, and power is obtained from a vehicle body storage battery and supplied to the camera after passing through the power supply adjusting chip. The camera outputs video signals after being electrified and initialized. Therefore, the vehicle-mounted camera interface generally comprises a power line and a video signal line, and in order to reduce cost, the high-definition camera generally adopts a coaxial cable to supply power in a POC (point of sale) mode. In order to meet all-weather application requirements, an infrared LED is added to serve as a light source to supplement light, and when the ambient brightness is higher than a set threshold value, a light supplement lamp is turned off; otherwise, the light supplement lamp is turned on when the ambient brightness is lower than the set threshold value. Because the fill light covers the whole vehicle range, the power is generally large, and therefore, for POC power supply, the load change is large.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a vehicle-mounted camera power supply system to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme:
comprises a vehicle-mounted camera and a controller part; the LENS LENS in the vehicle-mounted camera is directly connected with a temperature SENSOR SENSOR through a data line, the temperature SENSOR SENSOR is connected to an image processor IPS through a line, the image processor IPS is connected to a sequencer Serializer through a GPIO0 circuit, meanwhile, the sequencer Serializer is also connected with a voltage converter 2 through a PWM1 circuit, and the voltage converter 2 is connected with an infrared light emitting diode IRLED through a Vled circuit; the sequencer Serializer is connected with a joint 2 on the vehicle-mounted camera, and the sequencer and the joint 2 are simultaneously connected with a voltage converter 1 through Vpoc; the voltage converter 0 in the controller is directly connected with a chip SOC through a PWM0 circuit, the voltage converter 0 is connected with a connector 1 and an anti-sequencer through a current detection circuit, the current detection circuit is communicated with the chip SOC, the chip SOC outputs to the anti-sequencer through a PWM1 circuit, the anti-sequencer feeds back the chip SOC through a GPIO0 circuit, and the anti-sequencer is also connected with the connector 1;
as a further scheme of the utility model: the connector 1 on the controller is connected with the connector 2 on the vehicle-mounted camera through a data line, wherein the controller supplies power to the camera in a POC mode, the camera outputs video signals to the controller through LVDS signals, and a reverse control channel is arranged in the LVDS signals and used for the controller to output control signals to the camera.
As a further scheme of the utility model: the controller is provided with a voltage regulating circuit, wherein one end of a resistor R1 is connected to an FB pin of a voltage converter DC/DC0, the other end of a resistor R1 is connected with one end of a resistor R2, the resistor R1 and the resistor R2 are grounded through a capacitor C1, the other end of the resistor R2 is connected to a pin of the SOC through a data line, a pin in the middle of the SOC is connected with one ends of the resistor R3 and the resistor R4 in parallel, the other end of the resistor R4 is grounded, the other end of the resistor R3 is connected with a current detection circuit, the current detection circuit is connected back to a pin below the SOC, and meanwhile, the voltage converter DC/DC0 is directly connected to the current detection circuit.
Compared with the prior art, the utility model has the beneficial effects that:
1. under the condition of current limitation, the POC transmission power is increased by increasing the voltage so as to meet the power supply requirement of the camera.
2. According to the power requirements of the camera in different working scenes, the voltage is dynamically adjusted, the conversion efficiency of the voltage converter is improved, the heat dissipation is reduced, and the service life of the product is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a vehicle-mounted camera power supply system.
Fig. 2 is a circuit diagram of a voltage regulating circuit in a vehicle-mounted camera power supply system.
Fig. 3 is a schematic diagram of the operation of a vehicle-mounted camera power supply system.
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.
Referring to fig. 1 to 3, in an embodiment of the present invention, a power supply system for a vehicle-mounted camera includes a vehicle-mounted camera and a controller portion; the LENS LENS in the vehicle-mounted camera is directly connected with a temperature SENSOR SENSOR through a data line, the temperature SENSOR SENSOR is connected to an image processor IPS through a line, the image processor IPS is connected to a sequencer Serializer through a GPIO0 circuit, meanwhile, the sequencer Serializer is also connected with a voltage converter 2 through a PWM1 circuit, and the voltage converter 2 is connected with an infrared light emitting diode IRLED through a Vled circuit; the sequencer Serializer is connected with a joint 2 on the vehicle-mounted camera, and the sequencer and the joint 2 are simultaneously connected with a voltage converter 1 through Vpoc;
the voltage converter 0 in the controller is directly connected with a chip SOC through a PWM0 circuit, the voltage converter 0 is connected with a connector 1 and an anti-sequencer through a current detection circuit, the current detection circuit is communicated with the chip SOC, the chip SOC outputs to the anti-sequencer through a PWM1 circuit, the anti-sequencer feeds back the chip SOC through a GPIO0 circuit, and the anti-sequencer is also connected with the connector 1;
the connector 1 on the controller is connected with the connector 2 on the vehicle-mounted camera through a data line, wherein the controller supplies power to the camera in a POC (point of sale) mode, the camera outputs a video signal to the controller through an LVDS (low voltage differential signaling) signal, and a reverse control channel is arranged in the LVDS signal and used for the controller to output a control signal to the camera;
the controller is provided with a voltage regulating circuit, wherein one end of a resistor R1 is connected to an FB pin of a voltage converter DC/DC0, the other end of a resistor R1 is connected with one end of a resistor R2, the resistor R1 and the resistor R2 are grounded through a capacitor C1, the other end of the resistor R2 is connected to a pin of the SOC through a data line, a pin in the middle of the SOC is connected with one ends of the resistor R3 and the resistor R4 in parallel, the other end of the resistor R4 is grounded, the other end of the resistor R3 is connected with a current detection circuit, the current detection circuit is connected back to a pin below the SOC, and meanwhile, the voltage converter DC/DC0 is directly connected to the current detection circuit.
The utility model comprises a vehicle-mounted camera and a controller part; the vehicle-mounted camera is connected with the controller through a coaxial cable, the controller supplies power to the camera in a POC mode, the camera outputs a video signal to the controller through an LVDS (low voltage differential signaling) signal, a reverse control channel is arranged in the LVDS signal and used for the controller to output a control signal to the camera, and the POC is adjusted to be 3.3V, 1.8V, 1.2V and other power supplies in the vehicle-mounted camera to supply power to a temperature sensor, an image processor, a sequencer and other devices by a voltage converter 1 in the vehicle-mounted camera; the voltage converter 2 supplies power to the infrared light emitting diode, and the output current of the voltage converter 2 can be controlled by the SOC: when the image processor detects that the image brightness is higher than the set threshold, the GPIO0 outputs low level, the PWM1 of the SOC outputs 0, and the infrared light-emitting diode is turned off; when the infrared light emitting diode detects that the image brightness is lower than the set threshold value, the input and output of the GPIO0 general type are high level, the PWM1 of the SOC outputs a PWM signal, the infrared light emitting diode is turned on, the duty ratio of the PWM signal is adjusted by the SOC according to the detected image brightness, the larger the duty ratio is, the larger the output current of the voltage converter 2 is, and the larger the light emitting intensity of the infrared light emitting diode is; the smaller the opposite.
The voltage converter 0 in the controller is used for supplying power to the camera, and the output voltage of the voltage converter 0 is controlled by the SOC control PWM 0: when the GPIO0 is 0, the duty cycle of the SOC turn-down PWM0 turns down the output voltage of the voltage converter 0; when GPIO0 is 1, the duty cycle of SOC up PWM0 turns up the voltage converter 0 output voltage so that the POC current decreases; meanwhile, the SOC can monitor the POC current through the current detection circuit, if the current is larger than a set threshold value, the duty ratio of the PWM0 is increased, and if the current is lower than the set threshold value, the duty ratio of the PWM0 is reduced, so that the working efficiency of the voltage converter of the camera head end can be improved, the heat emission is reduced, and the service life of a product is prolonged.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.
Claims (3)
1. A power supply system of a vehicle-mounted camera comprises the vehicle-mounted camera and a controller part, and is characterized in that a LENS LENS in the vehicle-mounted camera is directly connected with a temperature SENSOR SENSOR through a data line, the temperature SENSOR SENSOR is connected to an image processor IPS through a line, the image processor IPS is connected to a sequencer Serializer through a GPIO0 circuit, meanwhile, the sequencer Serializer is also connected with a voltage converter 2 through a PWM1 circuit, and the voltage converter 2 is connected with an infrared light emitting diode IRLED through a Vled circuit; the sequencer Serializer is connected with a joint 2 on the vehicle-mounted camera, and the sequencer and the joint 2 are simultaneously connected with a voltage converter 1 through Vpoc; voltage converter 0 and chip SOC pass through PWM0 circuit direct link to each other in the controller, and voltage converter 0 passes through current detection circuit and connects 1 and anti-sequencer to link to each other simultaneously, and current detection circuit intercommunication chip SOC, chip SOC passes through PWM1 circuit output simultaneously to anti-sequencer, and anti-sequencer passes through GPIO0 circuit feedback chip SOC, and anti-sequencer also is connected with joint 1 simultaneously.
2. The vehicle-mounted camera power supply system according to claim 1, wherein the connector 1 of the controller is connected to the connector 2 of the vehicle-mounted camera through a data line, wherein the controller supplies power to the camera through a POC mode, the camera outputs a video signal to the controller through an LVDS signal, and the LVDS signal has a reverse control channel for the controller to output a control signal to the camera.
3. The vehicle-mounted camera power supply system according to claim 1, wherein the controller is provided with a voltage regulation circuit, wherein one end of a resistor R1 is connected to an FB pin of the voltage converter DC/DC0, the other end of the resistor R1 is connected to one end of a resistor R2, the resistor R1 and the resistor R2 are grounded through a capacitor C1, the other end of the resistor R2 is connected to a pin of the SOC through a data line, the pin in the middle of the SOC is connected with one ends of the resistor R3 and the resistor R4 in parallel, the other end of the resistor R4 is grounded, the other end of the resistor R3 is connected to a current detection circuit, the current detection circuit is connected back to the pin below the SOC, and the voltage converter DC/DC0 is directly connected to the current detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120090813.XU CN215474959U (en) | 2021-01-13 | 2021-01-13 | Vehicle-mounted camera power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120090813.XU CN215474959U (en) | 2021-01-13 | 2021-01-13 | Vehicle-mounted camera power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215474959U true CN215474959U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120090813.XU Active CN215474959U (en) | 2021-01-13 | 2021-01-13 | Vehicle-mounted camera power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215474959U (en) |
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2021
- 2021-01-13 CN CN202120090813.XU patent/CN215474959U/en active Active
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Effective date of registration: 20231120 Address after: 610, Floor 6, Block A, No. 2, Lize Middle Second Road, Chaoyang District, Beijing 100102 Patentee after: Zhongguancun Technology Leasing Co.,Ltd. Address before: 518126 room 02, 4th floor, building 3, factory side, Nantai Industrial Park, No.2 Nantai Road, Gushu community, Xixiang street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: JUNJIE INTELLIGENT (SHENZHEN) Co.,Ltd. |