Camera power supply system

Abstract

The utility model relates to a camera power supply system. Comprising a power adapter for outputting 12V direct current, a first power supply module for outputting 0.9 V direct current, a second power supply module for outputting 0.8 V direct current, a third power supply module for outputting 1.5 V direct current, a fourth power supply module for outputting 3.3 V direct current, a fifth power supply module for outputting 1.8 V direct current and a sixth power supply module for outputting 5V direct current, the first power supply module, the second power supply module, the third power supply module, the fourth power supply module, the fifth power supply module and the sixth power supply module are all connected with the power adapter, and the starting time sequence of power supply is the second power supply module, the fourth power supply module, the fifth power supply module, the third power supply module, the first power supply module and the sixth power supply module in sequence. According to the system, power management is utilized, specific power distribution is carried out according to power domains, the power domains do not interfere with one another, the stability and performance of the system are remarkably improved, the power consumption of the system is reduced, and the service life of the camera is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of household cameras, and in particular to a camera power supply system. Background Art

[0002] With the development of the times, cameras are increasingly used in life. Many families choose to install cameras at home for the safety of their families and property, and the market prospects for home cameras are huge. Traditional home cameras use a 12W adapter to input 12V voltage, which directly powers devices such as motors and LEDs. At the same time, the 12V voltage is reduced to the required voltage through the DCDC step-down circuit and the LDO step-down circuit to power other devices. This solution of powering all circuits at the same time will cause interference between modules and affect the stability of the system. Summary of the invention

[0003] The utility model provides a camera power supply system, aiming to solve the problem that the existing power supply solution may cause interference between modules and affect the stability of the system.

[0004] The utility model provides a camera power supply system, comprising a power adapter that outputs 12V direct current, a first power supply module that outputs 0.9V direct current, a second power supply module that outputs 0.8V direct current, a third power supply module that outputs 1.5V direct current, a fourth power supply module that outputs 3.3V direct current, a fifth power supply module that outputs 1.8V direct current and a sixth power supply module that outputs 5V direct current, the first power supply module, the second power supply module, the third power supply module, the fourth power supply module, the fifth power supply module and the sixth power supply module are all connected to the power adapter, and the power supply startup sequence is the second power supply module, the fourth power supply module, the fifth power supply module, the third power supply module, the first power supply module and the sixth power supply module.

[0005] As a further improvement of the present invention, the first power supply module includes a step-down chip U2, pin 1 of the step-down chip U2 is connected to the power adapter and connected to 12V DC power, and pin 5 of the step-down chip U2 outputs 0.9V DC power.

[0006] As a further improvement of the present invention, the second power supply module includes a step-down chip U1, pin 1 of the step-down chip U1 is connected to the power adapter and connected to 12V DC power, and pin 6 of the step-down chip U1 outputs 0.8V DC power.

[0007] As a further improvement of the present invention, the third power supply module includes a buck chip U11, pin 1 of the buck chip U11 is connected to the power adapter and connected to 12V DC power, and pin 6 of the buck chip U11 is connected to the memory end of the control chip.

[0008] As a further improvement of the present invention, the fourth power supply module includes a buck chip U7, pin 1 of the buck chip U7 is connected to the power adapter and connected to 12V DC power, and the buck chip U11 outputs 3.3V DC power.

[0009] As a further improvement of the present invention, the fourth power supply module further includes a voltage stabilizing chip U9, pin 1 of the voltage stabilizing chip U9 is connected to pin 2 of the step-down chip U11, and pin 5 of the voltage stabilizing chip U9 outputs 3.3V DC.

[0010] As a further improvement of the present invention, the fifth power supply module includes a voltage stabilizing chip U5, pin 1 of the voltage stabilizing chip U5 is connected to pin 6 of the step-down chip U11, and pin 5 of the voltage stabilizing chip U5 outputs 1.8V DC.

[0011] As a further improvement of the present invention, the sixth power supply module includes a step-down chip U3, pin 1 of the step-down chip U3 is connected to the power adapter and receives 12V DC power, and pin 2 of the step-down chip U3 outputs 5V DC power.

[0012] The beneficial effects of the utility model are: the system utilizes power management to perform specific power allocation according to power domains, constructs independent power islands, and the power domains do not interfere with each other, which significantly improves the stability and performance of the system, reduces the power consumption of the system, and extends the service life of the camera. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a relationship connection diagram of each power supply module of the utility model;

[0014] Figure 2 It is a circuit connection diagram of the first power supply module of the utility model;

[0015] Figure 3 It is a circuit connection diagram of the second power supply module of the utility model;

[0016] Figure 4 It is a circuit connection diagram of the third power supply module of the utility model;

[0017] Figure 5 This is the circuit connection diagram of the fourth power supply module step-down chip U7 of the utility model;

[0018] Figure 6 This is the circuit connection diagram of the voltage stabilizing chip U9 of the fourth power supply module of the utility model;

[0019] Figure 7 It is a circuit connection diagram of the fifth power supply module of the utility model;

[0020] Figure 8 It is a circuit connection diagram of the sixth power supply module of the utility model;

[0021] Fig. 9 It is a power timing diagram of the utility model. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in conjunction with the accompanying drawings and embodiments. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0023] like Figure 1-8 As shown, the utility model provides a camera power supply system, including a power adapter that outputs 12V DC, a first power supply module that outputs 0.9V DC, a second power supply module that outputs 0.8V DC, a third power supply module that outputs 1.5V DC, a fourth power supply module that outputs 3.3V DC, a fifth power supply module that outputs 1.8V DC, and a sixth power supply module that outputs 5V DC. The first power supply module, the second power supply module, the third power supply module, the fourth power supply module, the fifth power supply module, and the sixth power supply module are all connected to the power adapter, and the power supply startup sequence is the second power supply module, the fourth power supply module, the fifth power supply module, the third power supply module, the first power supply module, and the sixth power supply module.

[0024] As an embodiment of the utility model, the first power supply module includes a buck chip U2, pin 1 of the buck chip U2 is connected to the power adapter and connected to 12V DC, and pin 5 of the buck chip U2 outputs 0.9V DC.

[0025] As another embodiment of the utility model, the second power supply module includes a buck chip U1, pin 1 of the buck chip U1 is connected to the power adapter and connected to 12V DC power, and pin 6 of the buck chip U1 outputs 0.8V DC power.

[0026] As another embodiment of the utility model, the third power supply module includes a buck chip U11, pin 1 of the buck chip U11 is connected to the power adapter and connected to 12V DC power, and pin 6 of the buck chip U11 is connected to the memory end of the control chip.

[0027] As another embodiment of the utility model, the fourth power supply module includes a buck chip U7, pin 1 of the buck chip U7 is connected to the power adapter and connected to 12V DC power, and the buck chip U11 outputs 3.3V DC power.

[0028] As another embodiment of the utility model, the fourth power supply module further includes a voltage stabilizing chip U9, pin 1 of the voltage stabilizing chip U9 is connected to pin 2 of the step-down chip U11, and pin 5 of the voltage stabilizing chip U9 outputs 3.3V DC.

[0029] As another embodiment of the utility model, the fifth power supply module includes a voltage stabilizing chip U5, pin 1 of the voltage stabilizing chip U5 is connected to pin 6 of the step-down chip U11, and pin 5 of the voltage stabilizing chip U5 outputs 1.8V DC.

[0030] As another embodiment of the utility model, the sixth power supply module includes a buck chip U3, pin 1 of the buck chip U3 is connected to the power adapter and connected to 12V DC power, and pin 2 of the buck chip U3 outputs 5V DC power.

[0031] The utility model provides a camera power supply system, which utilizes power management to perform specific power distribution according to power domains, constructs independent power islands, and does not interfere with each other between power domains, thereby significantly improving the stability and performance of the system, reducing the power consumption of the system, and extending the service life of the camera.

[0032] This camera uses the RV1106G video processing dedicated SOC chip as the control chip. It can only work after the software engineer writes the code and burns it. RV1106 obtains video data by processing the information collected by the image sensor; the storage module, the video data is processed by KLM4G1FETE-B041 and saved in the SD storage card; the button control module uses a touch button, and RV1106G processes it by detecting the effective state of the button. WIFI module, Wifi6-ESWINModule can upload video data to the cloud, and the mobile phone can remotely control it; the motor module uses the D6208 motor driver chip to drive the DC motor. Under the control of RV1102G, the camera can automatically focus and rotate 360°, the video is clearer, and the shooting range is larger.

[0033] In each camera, in order to achieve efficient power management for the control chip, we define the power supply as each power domain. Each power domain has a targeted power supply, and each power domain works independently, and the power is allocated according to each functional module case. After the power supply is divided into each independent power supply, we do not provide each voltage at the same time when powered on, but power on independently based on different timings.

[0034] The entire system is powered by the 12V / 1A power adapter. The entire system is mainly divided into 7 power domains, namely 12V, 0.9V, 0.8V, 1.5V, 3.3V, 1.8V and 5V. When powered on, the power adapter inputs a 12V voltage as a power source; the voltage is stepped down by the step-down chip U1, the 0.8V power domain is turned on, and the core circuit of the control chip is powered, and the control chip starts working. Other power domains can be stepped down by step-down chips and voltage regulator chips to reach the corresponding power domain voltage. The switches of these chips are controlled by enable pins. The program written in the control chip is burned according to Fig. 9 Power timing diagram, sending corresponding levels to the enable pins of the chip in turn.

[0035] The buck chip U2 model adopts MP1652, 12Vdc input, output 0.9Vdc / 2A, to power the CPU of the control chip; the buck chip U1 model adopts MP1654, 12Vdc input, output 0.8Vdc / 4A, to power SOC VDD_EE and SRM_ISP; the buck chip U11 model adopts MP1652, 12Vdc input, output 1.5Vdc / 2A, to power DDR3 / DDR4 power supply; the step-down chip U7 model adopts MP1653, 12Vdc input, output 3.3Vdc / 2A, to power the voltage regulator chip U9, image sensor and other devices; the voltage regulator chip U9 model adopts SGM2032, 3.3Vdc input, output 3.3Vdc / 80mA, to power the IO port; the voltage regulator chip U5 model adopts WL2803E18-5, 3.3Vdc input, output 1.8Vdc, to power XTAL, MIPI, OTP_GPIO_IO_Vref_ets; SOC_USB; SOC_Audio; the step-down chip U3 model adopts MP1652, 12Vdc input, output 5Vdc, to power the speaker.

[0036] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A camera power supply system, characterized in that: It includes a power adapter that outputs 12V DC, a first power supply module that outputs 0.9V DC, a second power supply module that outputs 0.8V DC, a third power supply module that outputs 1.5V DC, a fourth power supply module that outputs 3.3V DC, a fifth power supply module that outputs 1.8V DC, and a sixth power supply module that outputs 5V DC. The first power supply module, the second power supply module, the third power supply module, the fourth power supply module, the fifth power supply module, and the sixth power supply module are all connected to the power adapter, and the power supply startup sequence is the second power supply module, the fourth power supply module, the fifth power supply module, the third power supply module, the first power supply module, and the sixth power supply module.

2. A camera power supply system according to claim 1, characterized in that: The first power supply module includes a buck chip U2, pin 1 of the buck chip U2 is connected to the power adapter and receives 12V DC power, and pin 5 of the buck chip U2 outputs 0.9V DC power.

3. A camera power supply system according to claim 1, characterized in that: The second power supply module includes a buck chip U1, pin 1 of the buck chip U1 is connected to the power adapter and receives 12V DC power, and pin 6 of the buck chip U1 outputs 0.8V DC power.

4. A camera power supply system according to claim 1, characterized in that: The third power supply module includes a buck chip U11, pin 1 of the buck chip U11 is connected to the power adapter and connected to 12V DC, and pin 6 of the buck chip U11 is connected to the memory terminal of the control chip.

5. A camera power supply system according to claim 1, characterized in that: The fourth power supply module includes a buck chip U7, a pin 1 of the buck chip U7 is connected to the power adapter and receives 12V DC power, and the buck chip U11 outputs 3.3V DC power.

6. A camera power supply system according to claim 5, characterized in that: The fourth power supply module further includes a voltage stabilizing chip U9, pin 1 of the voltage stabilizing chip U9 is connected to pin 2 of the step-down chip U11, and pin 5 of the voltage stabilizing chip U9 outputs 3.3V DC.

7. A camera power supply system according to claim 4, characterized in that: The fifth power supply module includes a voltage stabilizing chip U5, pin 1 of the voltage stabilizing chip U5 is connected to pin 6 of the step-down chip U11, and pin 5 of the voltage stabilizing chip U5 outputs 1.8V DC.

8. A camera power supply system according to claim 1, characterized in that: The sixth power supply module includes a buck chip U3, pin 1 of the buck chip U3 is connected to the power adapter and receives 12V DC power, and pin 2 of the buck chip U3 outputs 5V DC power.

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